{"version":3,"file":"extensions-Cutrafjg.cjs","names":[],"sources":["../src/api/exporters/html/util/serializeBlocksExternalHTML.ts","../src/api/exporters/html/externalHTMLExporter.ts","../src/api/getBlocksChangedByTransaction.ts","../src/extensions/BlockChange/BlockChange.ts","../src/extensions/Collaboration/YCursorPlugin.ts","../src/extensions/Collaboration/YSync.ts","../src/extensions/Collaboration/YUndo.ts","../src/extensions/Collaboration/ForkYDoc.ts","../src/extensions/Collaboration/schemaMigration/migrationRules/moveColorAttributes.ts","../src/extensions/Collaboration/schemaMigration/migrationRules/index.ts","../src/extensions/Collaboration/schemaMigration/SchemaMigration.ts","../src/extensions/DropCursor/utils.ts","../src/extensions/DropCursor/DropCursor.ts","../src/extensions/History/History.ts","../src/extensions/LinkToolbar/LinkToolbar.ts","../src/extensions/LinkToolbar/protocols.ts","../src/extensions/NodeSelectionKeyboard/NodeSelectionKeyboard.ts","../src/extensions/Placeholder/Placeholder.ts","../src/extensions/PreviousBlockType/PreviousBlockType.ts","../src/extensions/getDraggableBlockFromElement.ts","../src/api/exporters/markdown/htmlToMarkdown.ts","../src/api/exporters/markdown/markdownExporter.ts","../src/api/nodeConversions/fragmentToBlocks.ts","../src/extensions/SideMenu/MultipleNodeSelection.ts","../src/extensions/SideMenu/dragging.ts","../src/extensions/SideMenu/SideMenu.ts","../src/extensions/SuggestionMenu/getDefaultEmojiPickerItems.ts","../src/extensions/TableHandles/TableHandles.ts","../src/extensions/TrailingNode/TrailingNode.ts"],"sourcesContent":["import { DOMSerializer, Fragment, Node } from \"prosemirror-model\";\n\nimport { PartialBlock } from \"../../../../blocks/defaultBlocks.js\";\nimport type { BlockNoteEditor } from \"../../../../editor/BlockNoteEditor.js\";\nimport {\n BlockImplementation,\n BlockSchema,\n InlineContentSchema,\n StyleSchema,\n} from \"../../../../schema/index.js\";\nimport { UnreachableCaseError } from \"../../../../util/typescript.js\";\nimport {\n inlineContentToNodes,\n tableContentToNodes,\n} from \"../../../nodeConversions/blockToNode.js\";\nimport { nodeToCustomInlineContent } from \"../../../nodeConversions/nodeToBlock.js\";\n\nfunction addAttributesAndRemoveClasses(element: HTMLElement) {\n // Removes all BlockNote specific class names.\n const className =\n Array.from(element.classList).filter(\n (className) => !className.startsWith(\"bn-\"),\n ) || [];\n\n if (className.length > 0) {\n element.className = className.join(\" \");\n } else {\n element.removeAttribute(\"class\");\n }\n}\n\nexport function serializeInlineContentExternalHTML<\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n>(\n editor: BlockNoteEditor,\n blockContent: PartialBlock[\"content\"],\n serializer: DOMSerializer,\n options?: { document?: Document; blockType?: string },\n) {\n let nodes: Node[];\n\n // TODO: reuse function from nodeconversions?\n if (!blockContent) {\n throw new Error(\"blockContent is required\");\n } else if (typeof blockContent === \"string\") {\n nodes = inlineContentToNodes(\n [blockContent],\n editor.pmSchema,\n options?.blockType,\n );\n } else if (Array.isArray(blockContent)) {\n nodes = inlineContentToNodes(\n blockContent,\n editor.pmSchema,\n options?.blockType,\n );\n } else if (blockContent.type === \"tableContent\") {\n nodes = tableContentToNodes(blockContent, editor.pmSchema);\n } else {\n throw new UnreachableCaseError(blockContent.type);\n }\n\n // Check if any of the nodes are custom inline content with toExternalHTML\n const doc = options?.document ?? document;\n const fragment = doc.createDocumentFragment();\n\n for (const node of nodes) {\n // Check if this is a custom inline content node with toExternalHTML\n if (\n node.type.name !== \"text\" &&\n editor.schema.inlineContentSchema[node.type.name]\n ) {\n const inlineContentImplementation =\n editor.schema.inlineContentSpecs[node.type.name].implementation;\n\n if (inlineContentImplementation) {\n // Convert the node to inline content format\n const inlineContent = nodeToCustomInlineContent(\n node,\n editor.schema.inlineContentSchema,\n editor.schema.styleSchema,\n );\n\n // Use the custom toExternalHTML method or fallback to `render`\n const output = inlineContentImplementation.toExternalHTML\n ? inlineContentImplementation.toExternalHTML(\n inlineContent as any,\n editor as any,\n )\n : inlineContentImplementation.render.call(\n {\n renderType: \"dom\",\n props: undefined,\n },\n inlineContent as any,\n () => {\n // No-op\n },\n editor as any,\n );\n\n if (output) {\n fragment.appendChild(output.dom);\n\n // If contentDOM exists, render the inline content into it\n if (output.contentDOM) {\n const contentFragment = serializer.serializeFragment(\n node.content,\n options,\n );\n output.contentDOM.dataset.editable = \"\";\n output.contentDOM.appendChild(contentFragment);\n }\n continue;\n }\n }\n } else if (node.type.name === \"text\") {\n // We serialize text nodes manually as we need to serialize the styles/\n // marks using `styleSpec.implementation.render`. When left up to\n // ProseMirror, it'll use `toDOM` which is incorrect.\n let dom: globalThis.Node | Text = document.createTextNode(\n node.textContent,\n );\n // Reverse the order of marks to maintain the correct priority.\n for (const mark of node.marks.toReversed()) {\n if (mark.type.name in editor.schema.styleSpecs) {\n const newDom = (\n editor.schema.styleSpecs[mark.type.name].implementation\n .toExternalHTML ??\n editor.schema.styleSpecs[mark.type.name].implementation.render\n )(mark.attrs[\"stringValue\"], editor);\n newDom.contentDOM!.appendChild(dom);\n dom = newDom.dom;\n } else {\n const domOutputSpec = mark.type.spec.toDOM!(mark, true);\n const newDom = DOMSerializer.renderSpec(document, domOutputSpec);\n newDom.contentDOM!.appendChild(dom);\n dom = newDom.dom;\n }\n }\n\n fragment.appendChild(dom);\n } else {\n // Fall back to default serialization for this node\n const nodeFragment = serializer.serializeFragment(\n Fragment.from([node]),\n options,\n );\n fragment.appendChild(nodeFragment);\n }\n }\n\n if (\n fragment.childNodes.length === 1 &&\n fragment.firstChild?.nodeType === 1 /* Node.ELEMENT_NODE */\n ) {\n addAttributesAndRemoveClasses(fragment.firstChild as HTMLElement);\n }\n\n return fragment;\n}\n\n/**\n * TODO: there's still quite some logic that handles getting and filtering properties,\n * we should make sure the `toExternalHTML` methods of default blocks actually handle this,\n * instead of the serializer.\n */\nfunction serializeBlock<\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n>(\n fragment: DocumentFragment,\n editor: BlockNoteEditor,\n block: PartialBlock,\n serializer: DOMSerializer,\n orderedListItemBlockTypes: Set,\n unorderedListItemBlockTypes: Set,\n nestingLevel: number,\n options?: { document?: Document },\n) {\n const doc = options?.document ?? document;\n const BC_NODE = editor.pmSchema.nodes[\"blockContainer\"];\n\n // set default props in case we were passed a partial block\n const props = block.props || {};\n for (const [name, spec] of Object.entries(\n editor.schema.blockSchema[block.type as any].propSchema,\n )) {\n if (!(name in props) && spec.default !== undefined) {\n (props as any)[name] = spec.default;\n }\n }\n\n const bc = BC_NODE.spec?.toDOM?.(\n BC_NODE.create({\n id: block.id,\n ...props,\n }),\n ) as {\n dom: HTMLElement;\n contentDOM?: HTMLElement;\n };\n\n // the container node is just used as a workaround to get some block-level attributes.\n // we should change toExternalHTML so that this is not necessary\n const attrs = Array.from(bc.dom.attributes);\n\n const blockImplementation = editor.blockImplementations[block.type as any]\n .implementation as BlockImplementation;\n const ret =\n blockImplementation.toExternalHTML?.call(\n {},\n { ...block, props } as any,\n editor as any,\n {\n nestingLevel,\n },\n ) ||\n blockImplementation.render.call(\n {},\n { ...block, props } as any,\n editor as any,\n );\n\n const elementFragment = doc.createDocumentFragment();\n\n if ((ret.dom as HTMLElement).classList.contains(\"bn-block-content\")) {\n const blockContentDataAttributes = [\n ...attrs,\n ...Array.from((ret.dom as HTMLElement).attributes),\n ].filter(\n (attr) =>\n attr.name.startsWith(\"data\") &&\n attr.name !== \"data-content-type\" &&\n attr.name !== \"data-file-block\" &&\n attr.name !== \"data-node-view-wrapper\" &&\n attr.name !== \"data-node-type\" &&\n attr.name !== \"data-id\" &&\n attr.name !== \"data-editable\",\n );\n\n // ret.dom = ret.dom.firstChild! as any;\n for (const attr of blockContentDataAttributes) {\n (ret.dom.firstChild! as HTMLElement).setAttribute(attr.name, attr.value);\n }\n\n addAttributesAndRemoveClasses(ret.dom.firstChild! as HTMLElement);\n if (nestingLevel > 0) {\n (ret.dom.firstChild! as HTMLElement).setAttribute(\n \"data-nesting-level\",\n nestingLevel.toString(),\n );\n }\n elementFragment.append(...Array.from(ret.dom.childNodes));\n } else {\n elementFragment.append(ret.dom);\n if (nestingLevel > 0) {\n (ret.dom as HTMLElement).setAttribute(\n \"data-nesting-level\",\n nestingLevel.toString(),\n );\n }\n }\n\n if (ret.contentDOM && block.content) {\n const ic = serializeInlineContentExternalHTML(\n editor,\n block.content as any, // TODO\n serializer,\n { ...options, blockType: block.type },\n );\n\n ret.contentDOM.appendChild(ic);\n }\n\n let listType = undefined;\n if (orderedListItemBlockTypes.has(block.type!)) {\n listType = \"OL\";\n } else if (unorderedListItemBlockTypes.has(block.type!)) {\n listType = \"UL\";\n }\n\n if (listType) {\n if (fragment.lastChild?.nodeName !== listType) {\n const list = doc.createElement(listType);\n\n if (\n listType === \"OL\" &&\n \"start\" in props &&\n props.start &&\n props?.start !== 1\n ) {\n list.setAttribute(\"start\", props.start + \"\");\n }\n fragment.append(list);\n }\n fragment.lastChild!.appendChild(elementFragment);\n } else {\n fragment.append(elementFragment);\n }\n\n if (block.children && block.children.length > 0) {\n const childFragment = doc.createDocumentFragment();\n serializeBlocksToFragment(\n childFragment,\n editor,\n block.children,\n serializer,\n orderedListItemBlockTypes,\n unorderedListItemBlockTypes,\n nestingLevel + 1,\n options,\n );\n if (\n fragment.lastChild?.nodeName === \"UL\" ||\n fragment.lastChild?.nodeName === \"OL\"\n ) {\n // add nested lists to the last list item\n while (\n childFragment.firstChild?.nodeName === \"UL\" ||\n childFragment.firstChild?.nodeName === \"OL\"\n ) {\n fragment.lastChild!.lastChild!.appendChild(childFragment.firstChild!);\n }\n }\n\n if (\"childrenDOM\" in ret && ret.childrenDOM) {\n // block specifies where children should go (e.g. toggle blocks\n // place children inside
)\n ret.childrenDOM.append(childFragment);\n } else if (\n editor.pmSchema.nodes[block.type as any].isInGroup(\"blockContent\")\n ) {\n // default \"blockContainer\" style blocks are flattened (no \"nested block\" support) for externalHTML, so append the child fragment to the outer fragment\n fragment.append(childFragment);\n } else {\n // for columns / column lists, do use nesting\n ret.contentDOM?.append(childFragment);\n }\n }\n}\n\nconst serializeBlocksToFragment = <\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n>(\n fragment: DocumentFragment,\n editor: BlockNoteEditor,\n blocks: PartialBlock[],\n serializer: DOMSerializer,\n orderedListItemBlockTypes: Set,\n unorderedListItemBlockTypes: Set,\n nestingLevel = 0,\n options?: { document?: Document },\n) => {\n for (const block of blocks) {\n serializeBlock(\n fragment,\n editor,\n block,\n serializer,\n orderedListItemBlockTypes,\n unorderedListItemBlockTypes,\n nestingLevel,\n options,\n );\n }\n};\n\nexport const serializeBlocksExternalHTML = <\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n>(\n editor: BlockNoteEditor,\n blocks: PartialBlock[],\n serializer: DOMSerializer,\n orderedListItemBlockTypes: Set,\n unorderedListItemBlockTypes: Set,\n options?: { document?: Document },\n) => {\n const doc = options?.document ?? document;\n const fragment = doc.createDocumentFragment();\n\n serializeBlocksToFragment(\n fragment,\n editor,\n blocks,\n serializer,\n orderedListItemBlockTypes,\n unorderedListItemBlockTypes,\n 0,\n options,\n );\n return fragment;\n};\n","import { DOMSerializer, Schema } from \"prosemirror-model\";\n\nimport { PartialBlock } from \"../../../blocks/defaultBlocks.js\";\nimport type { BlockNoteEditor } from \"../../../editor/BlockNoteEditor.js\";\nimport {\n BlockSchema,\n InlineContent,\n InlineContentSchema,\n StyleSchema,\n} from \"../../../schema/index.js\";\nimport {\n serializeBlocksExternalHTML,\n serializeInlineContentExternalHTML,\n} from \"./util/serializeBlocksExternalHTML.js\";\n\n// Used to export BlockNote blocks and ProseMirror nodes to HTML for use outside\n// the editor. Blocks are exported using the `toExternalHTML` method in their\n// `blockSpec`, or `toInternalHTML` if `toExternalHTML` is not defined.\n//\n// The HTML created by this serializer is different to what's rendered by the\n// editor to the DOM. This also means that data is likely to be lost when\n// converting back to original blocks. The differences in the output HTML are:\n// 1. It doesn't include the `blockGroup` and `blockContainer` wrappers meaning\n// that nesting is not preserved for non-list-item blocks.\n// 2. `li` items in the output HTML are wrapped in `ul` or `ol` elements.\n// 3. While nesting for list items is preserved, other types of blocks nested\n// inside a list are un-nested and a new list is created after them.\n// 4. The HTML is wrapped in a single `div` element.\n\n// Needs to be sync because it's used in drag handler event (SideMenuPlugin)\nexport const createExternalHTMLExporter = <\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n>(\n schema: Schema,\n editor: BlockNoteEditor,\n) => {\n const serializer = DOMSerializer.fromSchema(schema);\n\n return {\n exportBlocks: (\n blocks: PartialBlock[],\n options: { document?: Document },\n ) => {\n const html = serializeBlocksExternalHTML(\n editor,\n blocks,\n serializer,\n new Set([\"numberedListItem\"]),\n new Set([\"bulletListItem\", \"checkListItem\", \"toggleListItem\"]),\n options,\n );\n const div = document.createElement(\"div\");\n div.append(html);\n return div.innerHTML;\n },\n\n exportInlineContent: (\n inlineContent: InlineContent[],\n options: { document?: Document },\n ) => {\n const domFragment = serializeInlineContentExternalHTML(\n editor,\n inlineContent as any,\n serializer,\n options,\n );\n\n const parent = document.createElement(\"div\");\n parent.append(domFragment.cloneNode(true));\n\n return parent.innerHTML;\n },\n };\n};\n","import { combineTransactionSteps } from \"@tiptap/core\";\nimport deepEqual from \"fast-deep-equal\";\nimport type { Node } from \"prosemirror-model\";\nimport type { Transaction } from \"prosemirror-state\";\nimport {\n Block,\n DefaultBlockSchema,\n DefaultInlineContentSchema,\n DefaultStyleSchema,\n} from \"../blocks/defaultBlocks.js\";\nimport type { BlockSchema } from \"../schema/index.js\";\nimport type { InlineContentSchema } from \"../schema/inlineContent/types.js\";\nimport type { StyleSchema } from \"../schema/styles/types.js\";\nimport { nodeToBlock } from \"./nodeConversions/nodeToBlock.js\";\nimport { isNodeBlock } from \"./nodeUtil.js\";\nimport { getPmSchema } from \"./pmUtil.js\";\n\n/**\n * Change detection utilities for BlockNote.\n *\n * High-level algorithm used by getBlocksChangedByTransaction:\n * 1) Merge appended transactions into one document change.\n * 2) Collect a snapshot of blocks before and after (flat map by id, and per-parent child order).\n * 3) Emit inserts and deletes by diffing ids between snapshots.\n * 4) For ids present in both snapshots:\n * - If parentId changed, emit a move\n * - Else if block changed (ignoring children), emit an update\n * 5) Finally, detect same-parent sibling reorders by comparing child order per parent.\n * We use an inlined O(n log n) LIS inside detectReorderedChildren to keep a\n * longest already-ordered subsequence and mark only the remaining items as moved.\n */\n/**\n * Gets the parent block of a node, if it has one.\n */\nfunction getParentBlockId(doc: Node, pos: number): string | undefined {\n if (pos === 0) {\n return undefined;\n }\n const resolvedPos = doc.resolve(pos);\n for (let i = resolvedPos.depth; i > 0; i--) {\n const parent = resolvedPos.node(i);\n if (isNodeBlock(parent)) {\n return parent.attrs.id;\n }\n }\n return undefined;\n}\n\n/**\n * This attributes the changes to a specific source.\n */\nexport type BlockChangeSource =\n | { type: \"local\" }\n | { type: \"paste\" }\n | { type: \"drop\" }\n | { type: \"undo\" | \"redo\" | \"undo-redo\" }\n | { type: \"yjs-remote\" };\n\nexport type BlocksChanged<\n BSchema extends BlockSchema = DefaultBlockSchema,\n ISchema extends InlineContentSchema = DefaultInlineContentSchema,\n SSchema extends StyleSchema = DefaultStyleSchema,\n> = Array<\n {\n /**\n * The affected block.\n */\n block: Block;\n /**\n * The source of the change.\n */\n source: BlockChangeSource;\n } & (\n | {\n type: \"insert\" | \"delete\";\n /**\n * Insert and delete changes don't have a previous block.\n */\n prevBlock: undefined;\n }\n | {\n type: \"update\";\n /**\n * The previous block.\n */\n prevBlock: Block;\n }\n | {\n type: \"move\";\n /**\n * The affected block.\n */\n block: Block;\n /**\n * The block before the move.\n */\n prevBlock: Block;\n /**\n * The previous parent block (if it existed).\n */\n prevParent?: Block;\n /**\n * The current parent block (if it exists).\n */\n currentParent?: Block;\n }\n )\n>;\n\nfunction determineChangeSource(transaction: Transaction): BlockChangeSource {\n if (transaction.getMeta(\"paste\")) {\n return { type: \"paste\" };\n }\n if (transaction.getMeta(\"uiEvent\") === \"drop\") {\n return { type: \"drop\" };\n }\n if (transaction.getMeta(\"history$\")) {\n return {\n type: transaction.getMeta(\"history$\").redo ? \"redo\" : \"undo\",\n };\n }\n if (transaction.getMeta(\"y-sync$\")) {\n if (transaction.getMeta(\"y-sync$\").isUndoRedoOperation) {\n return { type: \"undo-redo\" };\n }\n return { type: \"yjs-remote\" };\n }\n return { type: \"local\" };\n}\n\ntype BlockSnapshot<\n BSchema extends BlockSchema,\n ISchema extends InlineContentSchema,\n SSchema extends StyleSchema,\n> = {\n byId: Record<\n string,\n {\n block: Block;\n parentId: string | undefined;\n }\n >;\n childrenByParent: Record;\n};\n\n/**\n * Collects a snapshot of blocks and per-parent child order in a single traversal.\n * Uses \"__root__\" to represent the root level where parentId is undefined.\n */\nfunction collectSnapshot<\n BSchema extends BlockSchema,\n ISchema extends InlineContentSchema,\n SSchema extends StyleSchema,\n>(doc: Node): BlockSnapshot {\n const ROOT_KEY = \"__root__\";\n const byId: Record<\n string,\n {\n block: Block;\n parentId: string | undefined;\n }\n > = {};\n const childrenByParent: Record = {};\n const pmSchema = getPmSchema(doc);\n doc.descendants((node, pos) => {\n if (!isNodeBlock(node)) {\n return true;\n }\n const parentId = getParentBlockId(doc, pos);\n const key = parentId ?? ROOT_KEY;\n if (!childrenByParent[key]) {\n childrenByParent[key] = [];\n }\n const block = nodeToBlock(node, pmSchema);\n byId[node.attrs.id] = { block, parentId };\n childrenByParent[key].push(node.attrs.id);\n return true;\n });\n return { byId, childrenByParent };\n}\n\n/**\n * Determines which child ids have been reordered (moved) within the same parent.\n * Uses LIS to keep the longest ordered subsequence and marks the rest as moved.\n */\nfunction detectReorderedChildren(\n prevOrder: string[] | undefined,\n nextOrder: string[] | undefined,\n): Set {\n const moved = new Set();\n if (!prevOrder || !nextOrder) {\n return moved;\n }\n // Consider only ids present in both orders (ignore inserts/deletes handled elsewhere)\n const prevIds = new Set(prevOrder);\n const commonNext: string[] = nextOrder.filter((id) => prevIds.has(id));\n const commonPrev: string[] = prevOrder.filter((id) =>\n commonNext.includes(id),\n );\n\n if (commonPrev.length <= 1 || commonNext.length <= 1) {\n return moved;\n }\n\n // Map ids to their index in previous order\n const indexInPrev: Record = {};\n for (let i = 0; i < commonPrev.length; i++) {\n indexInPrev[commonPrev[i]] = i;\n }\n\n // Build sequence of indices representing next order in terms of previous indices\n const sequence: number[] = commonNext.map((id) => indexInPrev[id]);\n\n // Inline O(n log n) LIS with reconstruction.\n // Why LIS? We want the smallest set of siblings to label as \"moved\".\n // Keeping the longest subsequence that is already in order achieves this,\n // so only items outside the LIS are reported as moves.\n const n = sequence.length;\n const tailsValues: number[] = [];\n const tailsEndsAtIndex: number[] = [];\n const previousIndexInLis: number[] = new Array(n).fill(-1);\n\n const lowerBound = (arr: number[], target: number): number => {\n let lo = 0;\n let hi = arr.length;\n while (lo < hi) {\n const mid = (lo + hi) >>> 1;\n if (arr[mid] < target) {\n lo = mid + 1;\n } else {\n hi = mid;\n }\n }\n return lo;\n };\n\n for (let i = 0; i < n; i++) {\n const value = sequence[i];\n const pos = lowerBound(tailsValues, value);\n if (pos > 0) {\n previousIndexInLis[i] = tailsEndsAtIndex[pos - 1];\n }\n if (pos === tailsValues.length) {\n tailsValues.push(value);\n tailsEndsAtIndex.push(i);\n } else {\n tailsValues[pos] = value;\n tailsEndsAtIndex[pos] = i;\n }\n }\n\n const lisIndexSet = new Set();\n let k = tailsEndsAtIndex[tailsEndsAtIndex.length - 1] ?? -1;\n while (k !== -1) {\n lisIndexSet.add(k);\n k = previousIndexInLis[k];\n }\n\n // Items not part of LIS are considered moved\n for (let i = 0; i < commonNext.length; i++) {\n if (!lisIndexSet.has(i)) {\n moved.add(commonNext[i]);\n }\n }\n return moved;\n}\n\n/**\n * Get the blocks that were changed by a transaction.\n */\nexport function getBlocksChangedByTransaction<\n BSchema extends BlockSchema = DefaultBlockSchema,\n ISchema extends InlineContentSchema = DefaultInlineContentSchema,\n SSchema extends StyleSchema = DefaultStyleSchema,\n>(\n transaction: Transaction,\n appendedTransactions: Transaction[] = [],\n): BlocksChanged {\n const source = determineChangeSource(transaction);\n const combinedTransaction = combineTransactionSteps(transaction.before, [\n transaction,\n ...appendedTransactions,\n ]);\n\n const prevSnap = collectSnapshot(\n combinedTransaction.before,\n );\n const nextSnap = collectSnapshot(\n combinedTransaction.doc,\n );\n\n const changes: BlocksChanged = [];\n const changedIds = new Set();\n\n // Handle inserted blocks\n Object.keys(nextSnap.byId)\n .filter((id) => !(id in prevSnap.byId))\n .forEach((id) => {\n changes.push({\n type: \"insert\",\n block: nextSnap.byId[id].block,\n source,\n prevBlock: undefined,\n });\n changedIds.add(id);\n });\n\n // Handle deleted blocks\n Object.keys(prevSnap.byId)\n .filter((id) => !(id in nextSnap.byId))\n .forEach((id) => {\n changes.push({\n type: \"delete\",\n block: prevSnap.byId[id].block,\n source,\n prevBlock: undefined,\n });\n changedIds.add(id);\n });\n\n // Handle updated, moved to different parent, indented, outdented blocks\n Object.keys(nextSnap.byId)\n .filter((id) => id in prevSnap.byId)\n .forEach((id) => {\n const prev = prevSnap.byId[id];\n const next = nextSnap.byId[id];\n const isParentDifferent = prev.parentId !== next.parentId;\n\n if (isParentDifferent) {\n changes.push({\n type: \"move\",\n block: next.block,\n prevBlock: prev.block,\n source,\n prevParent: prev.parentId\n ? prevSnap.byId[prev.parentId]?.block\n : undefined,\n currentParent: next.parentId\n ? nextSnap.byId[next.parentId]?.block\n : undefined,\n });\n changedIds.add(id);\n } else if (\n // Compare blocks while ignoring children to avoid reporting a parent\n // update when only descendants changed.\n !deepEqual(\n { ...prev.block, children: undefined } as any,\n { ...next.block, children: undefined } as any,\n )\n ) {\n changes.push({\n type: \"update\",\n block: next.block,\n prevBlock: prev.block,\n source,\n });\n changedIds.add(id);\n }\n });\n\n // Handle sibling reorders (parent unchanged but relative order changed)\n const prevOrderByParent = prevSnap.childrenByParent;\n const nextOrderByParent = nextSnap.childrenByParent;\n\n // Use a special key for root-level siblings\n const ROOT_KEY = \"__root__\";\n const parents = new Set([\n ...Object.keys(prevOrderByParent),\n ...Object.keys(nextOrderByParent),\n ]);\n\n const addedMoveForId = new Set();\n\n parents.forEach((parentKey) => {\n const movedWithinParent = detectReorderedChildren(\n prevOrderByParent[parentKey],\n nextOrderByParent[parentKey],\n );\n if (movedWithinParent.size === 0) {\n return;\n }\n movedWithinParent.forEach((id) => {\n // Only consider ids that exist in both snapshots and whose parent truly did not change\n const prev = prevSnap.byId[id];\n const next = nextSnap.byId[id];\n if (!prev || !next) {\n return;\n }\n if (prev.parentId !== next.parentId) {\n return;\n }\n // Skip if already accounted for by insert/delete/update/parent move\n if (changedIds.has(id)) {\n return;\n }\n // Verify we're addressing the right parent bucket\n const bucketKey = prev.parentId ?? ROOT_KEY;\n if (bucketKey !== parentKey) {\n return;\n }\n if (addedMoveForId.has(id)) {\n return;\n }\n addedMoveForId.add(id);\n changes.push({\n type: \"move\",\n block: next.block,\n prevBlock: prev.block,\n source,\n prevParent: prev.parentId\n ? prevSnap.byId[prev.parentId]?.block\n : undefined,\n currentParent: next.parentId\n ? nextSnap.byId[next.parentId]?.block\n : undefined,\n });\n changedIds.add(id);\n });\n });\n\n return changes;\n}\n","import { Plugin, PluginKey, Transaction } from \"prosemirror-state\";\nimport {\n BlocksChanged,\n getBlocksChangedByTransaction,\n} from \"../../api/getBlocksChangedByTransaction.js\";\nimport { createExtension } from \"../../editor/BlockNoteExtension.js\";\n\n/**\n * This plugin can filter transactions before they are applied to the editor, but with a higher-level API than `filterTransaction` from prosemirror.\n */\nexport const BlockChangeExtension = createExtension(() => {\n const beforeChangeCallbacks: ((context: {\n getChanges: () => BlocksChanged;\n tr: Transaction;\n }) => boolean | void)[] = [];\n return {\n key: \"blockChange\",\n prosemirrorPlugins: [\n new Plugin({\n key: new PluginKey(\"blockChange\"),\n filterTransaction: (tr) => {\n let changes:\n | ReturnType>\n | undefined = undefined;\n\n return beforeChangeCallbacks.reduce((acc, cb) => {\n if (acc === false) {\n // We only care that we hit a `false` result, so we can stop iterating.\n return acc;\n }\n return (\n cb({\n getChanges() {\n if (changes) {\n return changes;\n }\n changes = getBlocksChangedByTransaction(tr);\n return changes;\n },\n tr,\n }) !== false\n );\n }, true);\n },\n }),\n ],\n\n /**\n * Subscribe to the block change events.\n */\n subscribe(\n callback: (context: {\n getChanges: () => BlocksChanged;\n tr: Transaction;\n }) => boolean | void,\n ) {\n beforeChangeCallbacks.push(callback);\n\n return () => {\n beforeChangeCallbacks.splice(\n beforeChangeCallbacks.indexOf(callback),\n 1,\n );\n };\n },\n } as const;\n});\n","import { defaultSelectionBuilder, yCursorPlugin } from \"y-prosemirror\";\nimport {\n createExtension,\n ExtensionOptions,\n} from \"../../editor/BlockNoteExtension.js\";\nimport { CollaborationOptions } from \"./Collaboration.js\";\n\nexport type CollaborationUser = {\n name: string;\n color: string;\n [key: string]: string;\n};\n\n/**\n * Determine whether the foreground color should be white or black based on a provided background color\n * Inspired by: https://stackoverflow.com/a/3943023\n */\nfunction isDarkColor(bgColor: string): boolean {\n const color = bgColor.charAt(0) === \"#\" ? bgColor.substring(1, 7) : bgColor;\n const r = parseInt(color.substring(0, 2), 16); // hexToR\n const g = parseInt(color.substring(2, 4), 16); // hexToG\n const b = parseInt(color.substring(4, 6), 16); // hexToB\n const uicolors = [r / 255, g / 255, b / 255];\n const c = uicolors.map((col) => {\n if (col <= 0.03928) {\n return col / 12.92;\n }\n return Math.pow((col + 0.055) / 1.055, 2.4);\n });\n const L = 0.2126 * c[0] + 0.7152 * c[1] + 0.0722 * c[2];\n return L <= 0.179;\n}\n\nfunction defaultCursorRender(user: CollaborationUser) {\n const cursorElement = document.createElement(\"span\");\n\n cursorElement.classList.add(\"bn-collaboration-cursor__base\");\n\n const caretElement = document.createElement(\"span\");\n caretElement.setAttribute(\"contentedEditable\", \"false\");\n caretElement.classList.add(\"bn-collaboration-cursor__caret\");\n caretElement.setAttribute(\n \"style\",\n `background-color: ${user.color}; color: ${\n isDarkColor(user.color) ? \"white\" : \"black\"\n }`,\n );\n\n const labelElement = document.createElement(\"span\");\n\n labelElement.classList.add(\"bn-collaboration-cursor__label\");\n labelElement.setAttribute(\n \"style\",\n `background-color: ${user.color}; color: ${\n isDarkColor(user.color) ? \"white\" : \"black\"\n }`,\n );\n labelElement.insertBefore(document.createTextNode(user.name), null);\n\n caretElement.insertBefore(labelElement, null);\n\n cursorElement.insertBefore(document.createTextNode(\"\\u2060\"), null); // Non-breaking space\n cursorElement.insertBefore(caretElement, null);\n cursorElement.insertBefore(document.createTextNode(\"\\u2060\"), null); // Non-breaking space\n\n return cursorElement;\n}\n\nexport const YCursorExtension = createExtension(\n ({ options }: ExtensionOptions) => {\n const recentlyUpdatedCursors = new Map();\n const awareness =\n options.provider &&\n \"awareness\" in options.provider &&\n typeof options.provider.awareness === \"object\"\n ? options.provider.awareness\n : undefined;\n if (awareness) {\n if (\n \"setLocalStateField\" in awareness &&\n typeof awareness.setLocalStateField === \"function\"\n ) {\n awareness.setLocalStateField(\"user\", options.user);\n }\n if (\"on\" in awareness && typeof awareness.on === \"function\") {\n if (options.showCursorLabels !== \"always\") {\n awareness.on(\n \"change\",\n ({\n updated,\n }: {\n added: Array;\n updated: Array;\n removed: Array;\n }) => {\n for (const clientID of updated) {\n const cursor = recentlyUpdatedCursors.get(clientID);\n\n if (cursor) {\n setTimeout(() => {\n cursor.element.setAttribute(\"data-active\", \"\");\n }, 10);\n\n if (cursor.hideTimeout) {\n clearTimeout(cursor.hideTimeout);\n }\n\n recentlyUpdatedCursors.set(clientID, {\n element: cursor.element,\n hideTimeout: setTimeout(() => {\n cursor.element.removeAttribute(\"data-active\");\n }, 2000),\n });\n }\n }\n },\n );\n }\n }\n }\n\n return {\n key: \"yCursor\",\n prosemirrorPlugins: [\n awareness\n ? yCursorPlugin(awareness, {\n selectionBuilder: defaultSelectionBuilder,\n cursorBuilder(user: CollaborationUser, clientID: number) {\n let cursorData = recentlyUpdatedCursors.get(clientID);\n\n if (!cursorData) {\n const cursorElement = (\n options.renderCursor ?? defaultCursorRender\n )(user);\n\n if (options.showCursorLabels !== \"always\") {\n cursorElement.addEventListener(\"mouseenter\", () => {\n const cursor = recentlyUpdatedCursors.get(clientID)!;\n cursor.element.setAttribute(\"data-active\", \"\");\n\n if (cursor.hideTimeout) {\n clearTimeout(cursor.hideTimeout);\n recentlyUpdatedCursors.set(clientID, {\n element: cursor.element,\n hideTimeout: undefined,\n });\n }\n });\n\n cursorElement.addEventListener(\"mouseleave\", () => {\n const cursor = recentlyUpdatedCursors.get(clientID)!;\n\n recentlyUpdatedCursors.set(clientID, {\n element: cursor.element,\n hideTimeout: setTimeout(() => {\n cursor.element.removeAttribute(\"data-active\");\n }, 2000),\n });\n });\n }\n\n cursorData = {\n element: cursorElement,\n hideTimeout: undefined,\n };\n\n recentlyUpdatedCursors.set(clientID, cursorData);\n }\n\n return cursorData.element;\n },\n })\n : undefined,\n ].filter(Boolean),\n dependsOn: [\"ySync\"],\n updateUser(user: { name: string; color: string; [key: string]: string }) {\n awareness?.setLocalStateField(\"user\", user);\n },\n } as const;\n },\n);\n","import { ySyncPlugin } from \"y-prosemirror\";\nimport {\n ExtensionOptions,\n createExtension,\n} from \"../../editor/BlockNoteExtension.js\";\nimport { CollaborationOptions } from \"./Collaboration.js\";\n\nexport const YSyncExtension = createExtension(\n ({ options }: ExtensionOptions>) => {\n return {\n key: \"ySync\",\n prosemirrorPlugins: [ySyncPlugin(options.fragment)],\n runsBefore: [\"default\"],\n } as const;\n },\n);\n","import { redoCommand, undoCommand, yUndoPlugin } from \"y-prosemirror\";\nimport { createExtension } from \"../../editor/BlockNoteExtension.js\";\n\nexport const YUndoExtension = createExtension(() => {\n return {\n key: \"yUndo\",\n prosemirrorPlugins: [yUndoPlugin()],\n dependsOn: [\"yCursor\", \"ySync\"],\n undoCommand: undoCommand,\n redoCommand: redoCommand,\n } as const;\n});\n","import { yUndoPluginKey } from \"y-prosemirror\";\nimport * as Y from \"yjs\";\nimport {\n createExtension,\n createStore,\n ExtensionOptions,\n} from \"../../editor/BlockNoteExtension.js\";\nimport { CollaborationOptions } from \"./Collaboration.js\";\nimport { YCursorExtension } from \"./YCursorPlugin.js\";\nimport { YSyncExtension } from \"./YSync.js\";\nimport { YUndoExtension } from \"./YUndo.js\";\n\n/**\n * To find a fragment in another ydoc, we need to search for it.\n */\nfunction findTypeInOtherYdoc>(\n ytype: T,\n otherYdoc: Y.Doc,\n): T {\n const ydoc = ytype.doc!;\n if (ytype._item === null) {\n /**\n * If is a root type, we need to find the root key in the original ydoc\n * and use it to get the type in the other ydoc.\n */\n const rootKey = Array.from(ydoc.share.keys()).find(\n (key) => ydoc.share.get(key) === ytype,\n );\n if (rootKey == null) {\n throw new Error(\"type does not exist in other ydoc\");\n }\n return otherYdoc.get(rootKey, ytype.constructor as new () => T) as T;\n } else {\n /**\n * If it is a sub type, we use the item id to find the history type.\n */\n const ytypeItem = ytype._item;\n const otherStructs = otherYdoc.store.clients.get(ytypeItem.id.client) ?? [];\n const itemIndex = Y.findIndexSS(otherStructs, ytypeItem.id.clock);\n const otherItem = otherStructs[itemIndex] as Y.Item;\n const otherContent = otherItem.content as Y.ContentType;\n return otherContent.type as T;\n }\n}\n\nexport const ForkYDocExtension = createExtension(\n ({ editor, options }: ExtensionOptions) => {\n let forkedState:\n | {\n originalFragment: Y.XmlFragment;\n undoStack: Y.UndoManager[\"undoStack\"];\n forkedFragment: Y.XmlFragment;\n }\n | undefined = undefined;\n\n const store = createStore({ isForked: false });\n\n return {\n key: \"yForkDoc\",\n store,\n /**\n * Fork the Y.js document from syncing to the remote,\n * allowing modifications to the document without affecting the remote.\n * These changes can later be rolled back or applied to the remote.\n */\n fork() {\n if (forkedState) {\n return;\n }\n\n const originalFragment = options.fragment;\n\n if (!originalFragment) {\n throw new Error(\"No fragment to fork from\");\n }\n\n const doc = new Y.Doc();\n // Copy the original document to a new Yjs document\n Y.applyUpdate(doc, Y.encodeStateAsUpdate(originalFragment.doc!));\n\n // Find the forked fragment in the new Yjs document\n const forkedFragment = findTypeInOtherYdoc(originalFragment, doc);\n\n forkedState = {\n undoStack: yUndoPluginKey.getState(editor.prosemirrorState)!\n .undoManager.undoStack,\n originalFragment,\n forkedFragment,\n };\n\n // Need to reset all the yjs plugins\n editor.unregisterExtension([\n YUndoExtension,\n YCursorExtension,\n YSyncExtension,\n ]);\n const newOptions = {\n ...options,\n fragment: forkedFragment,\n };\n // Register them again, based on the new forked fragment\n editor.registerExtension([\n YSyncExtension(newOptions),\n // No need to register the cursor plugin again, it's a local fork\n YUndoExtension(),\n ]);\n\n // Tell the store that the editor is now forked\n store.setState({ isForked: true });\n },\n\n /**\n * Resume syncing the Y.js document to the remote\n * If `keepChanges` is true, any changes that have been made to the forked document will be applied to the original document.\n * Otherwise, the original document will be restored and the changes will be discarded.\n */\n merge({ keepChanges }: { keepChanges: boolean }) {\n if (!forkedState) {\n return;\n }\n // Remove the forked fragment's plugins\n editor.unregisterExtension([\"ySync\", \"yCursor\", \"yUndo\"]);\n\n const { originalFragment, forkedFragment, undoStack } = forkedState;\n // Register the plugins again, based on the original fragment (which is still in the original options)\n editor.registerExtension([\n YSyncExtension(options),\n YCursorExtension(options),\n YUndoExtension(),\n ]);\n\n // Reset the undo stack to the original undo stack\n yUndoPluginKey.getState(\n editor.prosemirrorState,\n )!.undoManager.undoStack = undoStack;\n\n if (keepChanges) {\n // Apply any changes that have been made to the fork, onto the original doc\n const update = Y.encodeStateAsUpdate(\n forkedFragment.doc!,\n Y.encodeStateVector(originalFragment.doc!),\n );\n // Applying this change will add to the undo stack, allowing it to be undone normally\n Y.applyUpdate(originalFragment.doc!, update, editor);\n }\n // Reset the forked state\n forkedState = undefined;\n // Tell the store that the editor is no longer forked\n store.setState({ isForked: false });\n },\n } as const;\n },\n);\n","import * as Y from \"yjs\";\n\nimport { MigrationRule } from \"./migrationRule.js\";\nimport { defaultProps } from \"../../../../blocks/defaultProps.js\";\n\n// Helper function to recursively traverse a `Y.XMLElement` and its descendant\n// elements.\nconst traverseElement = (\n rootElement: Y.XmlElement,\n cb: (element: Y.XmlElement) => void,\n) => {\n cb(rootElement);\n rootElement.forEach((element) => {\n if (element instanceof Y.XmlElement) {\n traverseElement(element, cb);\n }\n });\n};\n\n// Moves `textColor` and `backgroundColor` attributes from `blockContainer`\n// nodes to their child `blockContent` nodes. This is due to a schema change\n// introduced in PR #TODO.\nexport const moveColorAttributes: MigrationRule = (fragment, tr) => {\n // Stores necessary info for all `blockContainer` nodes which still have\n // `textColor` or `backgroundColor` attributes that need to be moved.\n const targetBlockContainers: Map<\n string,\n {\n textColor: string | undefined;\n backgroundColor: string | undefined;\n }\n > = new Map();\n // Finds all elements which still have `textColor` or `backgroundColor`\n // attributes in the current Yjs fragment.\n fragment.forEach((element) => {\n if (element instanceof Y.XmlElement) {\n traverseElement(element, (element) => {\n if (\n element.nodeName === \"blockContainer\" &&\n element.hasAttribute(\"id\")\n ) {\n const textColor = element.getAttribute(\"textColor\");\n const backgroundColor = element.getAttribute(\"backgroundColor\");\n\n const colors = {\n textColor:\n textColor === defaultProps.textColor.default\n ? undefined\n : textColor,\n backgroundColor:\n backgroundColor === defaultProps.backgroundColor.default\n ? undefined\n : backgroundColor,\n };\n\n if (colors.textColor || colors.backgroundColor) {\n targetBlockContainers.set(element.getAttribute(\"id\")!, colors);\n }\n }\n });\n }\n });\n\n if (targetBlockContainers.size === 0) {\n return false;\n }\n\n // Appends transactions to add the `textColor` and `backgroundColor`\n // attributes found on each `blockContainer` node to move them to the child\n // `blockContent` node.\n tr.doc.descendants((node, pos) => {\n if (\n node.type.name === \"blockContainer\" &&\n targetBlockContainers.has(node.attrs.id)\n ) {\n const el = tr.doc.nodeAt(pos + 1);\n if (!el) {\n throw new Error(\"No element found\");\n }\n\n tr.setNodeMarkup(pos + 1, undefined, {\n // preserve existing attributes\n ...el.attrs,\n // add the textColor and backgroundColor attributes\n ...targetBlockContainers.get(node.attrs.id),\n });\n }\n });\n\n return true;\n};\n","import { MigrationRule } from \"./migrationRule.js\";\nimport { moveColorAttributes } from \"./moveColorAttributes.js\";\n\nexport default [moveColorAttributes] as MigrationRule[];\n","import { Plugin, PluginKey } from \"@tiptap/pm/state\";\nimport * as Y from \"yjs\";\n\nimport {\n createExtension,\n ExtensionOptions,\n} from \"../../../editor/BlockNoteExtension.js\";\nimport migrationRules from \"./migrationRules/index.js\";\n\n// This plugin allows us to update collaboration YDocs whenever BlockNote's\n// underlying ProseMirror schema changes. The plugin reads the current Yjs\n// fragment and dispatches additional transactions to the ProseMirror state, in\n// case things are found in the fragment that don't adhere to the editor schema\n// and need to be fixed. These fixes are defined as `MigrationRule`s within the\n// `migrationRules` directory.\nexport const SchemaMigration = createExtension(\n ({ options }: ExtensionOptions<{ fragment: Y.XmlFragment }>) => {\n let migrationDone = false;\n const pluginKey = new PluginKey(\"schemaMigration\");\n\n return {\n key: \"schemaMigration\",\n prosemirrorPlugins: [\n new Plugin({\n key: pluginKey,\n appendTransaction: (transactions, _oldState, newState) => {\n if (migrationDone) {\n return undefined;\n }\n\n if (\n // If any of the transactions are not due to a yjs sync, we don't need to run the migration\n !transactions.some((tr) => tr.getMeta(\"y-sync$\")) ||\n // If none of the transactions result in a document change, we don't need to run the migration\n transactions.every((tr) => !tr.docChanged) ||\n // If the fragment is still empty, we can't run the migration (since it has not yet been applied to the Y.Doc)\n !options.fragment.firstChild\n ) {\n return undefined;\n }\n\n const tr = newState.tr;\n for (const migrationRule of migrationRules) {\n migrationRule(options.fragment, tr);\n }\n\n migrationDone = true;\n\n if (!tr.docChanged) {\n return undefined;\n }\n\n return tr;\n },\n }),\n ],\n } as const;\n },\n);\n","import type { EditorView } from \"prosemirror-view\";\n\n/**\n * The orientation of the drop cursor.\n */\nexport type DropCursorOrientation =\n | \"inline\" // Vertical line within text\n | \"block-horizontal\" // Horizontal line between blocks\n | \"block-vertical-left\" // Vertical line on left edge of block\n | \"block-vertical-right\"; // Vertical line on right edge of block\n\n/**\n * The position and orientation of the drop cursor.\n */\nexport type DropCursorPosition = {\n pos: number; // Document position\n orientation: DropCursorOrientation;\n};\n/**\n * Bounding rectangle in viewport coordinates (e.g. from getBoundingClientRect).\n */\nexport type Rect = {\n left: number;\n right: number;\n top: number;\n bottom: number;\n};\n\n/**\n * Returns true if the element or any ancestor has the given CSS class.\n * Used to skip drop cursor for elements marked with the exclusion class (e.g. drag handles).\n */\nexport function hasExclusionClassname(\n element: Element | null,\n exclude: string,\n): boolean {\n if (!element || !exclude) {\n return false;\n }\n return !!element.closest(`.${exclude}`);\n}\n\n/**\n * Computes the viewport rect for a block-level drop cursor (horizontal line between blocks\n * or vertical line on left/right edge). Returns null for inline positions or when no DOM node exists.\n */\nexport function getBlockDropRect(\n view: EditorView,\n cursorPos: DropCursorPosition,\n width: number,\n scaleX: number,\n scaleY: number,\n): Rect | null {\n const $pos = view.state.doc.resolve(cursorPos.pos);\n const isBlock = !$pos.parent.inlineContent;\n\n if (!isBlock || cursorPos.orientation === \"inline\") {\n return null;\n }\n\n const before = $pos.nodeBefore;\n\n const after = $pos.nodeAfter;\n\n if (!before && !after) {\n return null;\n }\n\n const isVertical =\n cursorPos.orientation === \"block-vertical-left\" ||\n cursorPos.orientation === \"block-vertical-right\";\n // For vertical cursors, position is at the node position, for horizontal cursors, position is at the node before position\n const nodePos = isVertical\n ? cursorPos.pos\n : cursorPos.pos - (before ? before.nodeSize : 0);\n\n const node = view.nodeDOM(nodePos) as HTMLElement | null;\n if (!node) {\n return null;\n }\n\n const nodeRect = node.getBoundingClientRect();\n\n if (isVertical) {\n const halfWidth = (width / 2) * scaleX;\n const left =\n cursorPos.orientation === \"block-vertical-left\"\n ? nodeRect.left\n : nodeRect.right;\n\n return {\n left: left - halfWidth,\n right: left + halfWidth,\n top: nodeRect.top,\n bottom: nodeRect.bottom,\n };\n }\n\n let top = before ? nodeRect.bottom : nodeRect.top;\n if (before && after) {\n top =\n (top +\n (view.nodeDOM(cursorPos.pos) as HTMLElement).getBoundingClientRect()\n .top) /\n 2;\n }\n const halfHeight = (width / 2) * scaleY;\n\n return {\n left: nodeRect.left,\n right: nodeRect.right,\n top: top - halfHeight,\n bottom: top + halfHeight,\n };\n}\n\n/**\n * Computes the viewport rect for an inline drop cursor (vertical line within text).\n */\nexport function getInlineDropRect(\n view: EditorView,\n cursorPos: DropCursorPosition,\n width: number,\n scaleX: number,\n): Rect {\n const coords = view.coordsAtPos(cursorPos.pos);\n const halfWidth = (width / 2) * scaleX;\n\n return {\n left: coords.left - halfWidth,\n right: coords.left + halfWidth,\n top: coords.top,\n bottom: coords.bottom,\n };\n}\n\n/**\n * Applies orientation-specific CSS classes to the drop cursor element so it can be\n * styled correctly (e.g. horizontal vs vertical line, inline vs block).\n */\nexport function applyOrientationClasses(\n el: HTMLElement,\n orientation: DropCursorOrientation,\n) {\n el.classList.toggle(\n \"prosemirror-dropcursor-inline\",\n orientation === \"inline\",\n );\n el.classList.toggle(\n \"prosemirror-dropcursor-block-horizontal\",\n orientation === \"block-horizontal\",\n );\n el.classList.toggle(\n \"prosemirror-dropcursor-block-vertical-left\",\n orientation === \"block-vertical-left\",\n );\n el.classList.toggle(\n \"prosemirror-dropcursor-block-vertical-right\",\n orientation === \"block-vertical-right\",\n );\n el.classList.toggle(\n \"prosemirror-dropcursor-block\",\n orientation === \"block-horizontal\",\n );\n el.classList.toggle(\n \"prosemirror-dropcursor-vertical\",\n orientation === \"block-vertical-left\" ||\n orientation === \"block-vertical-right\",\n );\n}\n\n/**\n * Returns the offset of the parent element for converting viewport coordinates to\n * parent-relative coordinates. Handles document.body and static positioning.\n */\nexport function getParentOffsets(parent: HTMLElement | null) {\n if (\n !parent ||\n (parent === document.body && getComputedStyle(parent).position === \"static\")\n ) {\n return {\n parentLeft: -window.pageXOffset,\n parentTop: -window.pageYOffset,\n };\n }\n\n const parentRect = parent.getBoundingClientRect();\n const parentScaleX = parentRect.width / parent.offsetWidth;\n const parentScaleY = parentRect.height / parent.offsetHeight;\n\n return {\n parentLeft: parentRect.left - parent.scrollLeft * parentScaleX,\n parentTop: parentRect.top - parent.scrollTop * parentScaleY,\n };\n}\n","import { dropPoint } from \"prosemirror-transform\";\nimport type { EditorView } from \"prosemirror-view\";\nimport {\n applyOrientationClasses,\n getBlockDropRect,\n getInlineDropRect,\n getParentOffsets,\n hasExclusionClassname,\n type DropCursorPosition,\n} from \"./utils.js\";\nimport type { BlockNoteEditor } from \"../../editor/BlockNoteEditor.js\";\nimport { createExtension } from \"../../editor/BlockNoteExtension.js\";\n\nexport const DRAG_EXCLUSION_CLASSNAME = \"bn-drag-exclude\";\n\n/**\n * Context passed to the computeDropPosition hook.\n */\nexport interface ComputeDropPositionContext {\n editor: BlockNoteEditor;\n event: DragEvent;\n view: EditorView;\n defaultPosition: DropCursorPosition | null;\n}\n\n/**\n * Hooks for customizing drop cursor behavior.\n */\nexport interface DropCursorHooks {\n /**\n * Compute cursor position and orientation.\n * Return null to prevent dropping (no cursor shown).\n */\n computeDropPosition?: (\n context: ComputeDropPositionContext,\n ) => DropCursorPosition | null;\n}\n\n/**\n * Options for the DropCursor extension.\n */\nexport interface DropCursorOptions {\n width?: number; // Cursor width in pixels (default: 5)\n color?: string | false; // Cursor color (default: \"#ddeeff\")\n exclude?: string; // CSS class for exclusion (default: \"bn-drag-exclude\")\n hooks?: DropCursorHooks; // Optional behavior hooks\n}\n\n/**\n * Drop cursor visualization based on prosemirror-dropcursor:\n * https://github.com/ProseMirror/prosemirror-dropcursor/blob/master/src/dropcursor.ts\n *\n * Refactored to use BlockNote extension pattern with mount callback and AbortSignal\n * for lifecycle management instead of ProseMirror PluginView.\n */\nexport const DropCursorExtension = createExtension<\n any,\n {\n dropCursor?: DropCursorOptions;\n }\n>(({ editor, options }) => {\n // State\n let cursorPos: DropCursorPosition | null = null;\n let element: HTMLElement | null = null;\n let timeout = -1;\n let dragSourceElement: Element | null = null;\n\n const config = {\n width: options.dropCursor?.width ?? 5,\n color: options.dropCursor?.color ?? \"#ddeeff\",\n exclude: options.dropCursor?.exclude ?? DRAG_EXCLUSION_CLASSNAME,\n hooks: options.dropCursor?.hooks,\n } as const;\n\n // Helper functions\n const setCursor = (pos: DropCursorPosition | null) => {\n if (\n pos?.pos === cursorPos?.pos &&\n pos?.orientation === cursorPos?.orientation\n ) {\n return;\n }\n cursorPos = pos;\n\n if (pos == null) {\n if (element && element.parentNode) {\n element.parentNode.removeChild(element);\n }\n element = null;\n } else {\n updateOverlay();\n }\n };\n\n const updateOverlay = () => {\n if (!cursorPos) {\n return;\n }\n\n const view = editor.prosemirrorView;\n const editorDOM = view.dom;\n const editorRect = editorDOM.getBoundingClientRect();\n const scaleX = editorRect.width / editorDOM.offsetWidth;\n const scaleY = editorRect.height / editorDOM.offsetHeight;\n\n const blockRect = getBlockDropRect(\n view,\n cursorPos,\n config.width,\n scaleX,\n scaleY,\n );\n const rect =\n blockRect ?? getInlineDropRect(view, cursorPos, config.width, scaleX);\n\n const parent = view.dom.offsetParent as HTMLElement;\n if (!element) {\n element = parent.appendChild(document.createElement(\"div\"));\n element.style.cssText =\n \"position: absolute; z-index: 50; pointer-events: none;\";\n if (config.color) {\n element.style.backgroundColor = config.color;\n }\n }\n\n applyOrientationClasses(element, cursorPos.orientation);\n\n const { parentLeft, parentTop } = getParentOffsets(parent);\n\n element.style.left = (rect.left - parentLeft) / scaleX + \"px\";\n element.style.top = (rect.top - parentTop) / scaleY + \"px\";\n element.style.width = (rect.right - rect.left) / scaleX + \"px\";\n element.style.height = (rect.bottom - rect.top) / scaleY + \"px\";\n };\n\n const scheduleRemoval = (ms: number) => {\n clearTimeout(timeout);\n timeout = window.setTimeout(() => setCursor(null), ms);\n };\n\n // Event handlers\n const onDragStart = (event: Event) => {\n const e = event as DragEvent;\n dragSourceElement = e.target instanceof Element ? e.target : null;\n };\n\n const onDragOver = (event: Event) => {\n const e = event as DragEvent;\n\n // Check if drag source has exclusion classname\n if (\n dragSourceElement &&\n hasExclusionClassname(dragSourceElement, config.exclude)\n ) {\n return;\n }\n\n // Check if drop target has exclusion classname\n if (\n e.target instanceof Element &&\n hasExclusionClassname(e.target, config.exclude)\n ) {\n return;\n }\n\n const view = editor.prosemirrorView;\n if (!view.editable) {\n return;\n }\n\n const pos = view.posAtCoords({\n left: e.clientX,\n top: e.clientY,\n });\n\n const node = pos && pos.inside >= 0 && view.state.doc.nodeAt(pos.inside);\n const disableDropCursor = node && (node.type.spec as any).disableDropCursor;\n const disabled =\n typeof disableDropCursor === \"function\"\n ? disableDropCursor(view, pos, e)\n : disableDropCursor;\n\n if (pos && !disabled) {\n let target = pos.pos;\n if (view.dragging && view.dragging.slice) {\n const point = dropPoint(view.state.doc, target, view.dragging.slice);\n if (point != null) {\n target = point;\n }\n }\n\n // Compute default position\n const $pos = view.state.doc.resolve(target);\n const isBlock = !$pos.parent.inlineContent;\n const defaultPosition: DropCursorPosition = {\n pos: target,\n orientation: isBlock ? \"block-horizontal\" : \"inline\",\n };\n\n // Allow hook to override position\n let finalPosition = defaultPosition;\n if (config.hooks?.computeDropPosition) {\n const hookResult = config.hooks.computeDropPosition({\n editor,\n event: e,\n view,\n defaultPosition,\n });\n if (hookResult === null) {\n // Hook returned null - don't show cursor\n setCursor(null);\n return;\n }\n finalPosition = hookResult;\n }\n\n setCursor(finalPosition);\n scheduleRemoval(5000);\n }\n };\n\n const onDragLeave = (event: Event) => {\n const e = event as DragEvent;\n if (\n !(e.relatedTarget instanceof Node) ||\n !editor.prosemirrorView.dom.contains(e.relatedTarget)\n ) {\n setCursor(null);\n }\n };\n\n const onDrop = () => {\n scheduleRemoval(20);\n };\n\n const onDragEnd = () => {\n scheduleRemoval(20);\n dragSourceElement = null;\n };\n\n return {\n key: \"dropCursor\",\n mount({ signal, dom, root }) {\n // Track drag source at document level\n root.addEventListener(\"dragstart\", onDragStart, {\n capture: true,\n signal,\n });\n\n // Handle drag events on the editor\n dom.addEventListener(\"dragover\", onDragOver, { signal });\n dom.addEventListener(\"dragleave\", onDragLeave, { signal });\n dom.addEventListener(\"drop\", onDrop, { signal });\n dom.addEventListener(\"dragend\", onDragEnd, { signal });\n\n // Clean up on unmount\n signal.addEventListener(\"abort\", () => {\n clearTimeout(timeout);\n setCursor(null);\n });\n },\n } as const;\n});\n","import { history, redo, undo } from \"@tiptap/pm/history\";\nimport { createExtension } from \"../../editor/BlockNoteExtension.js\";\n\nexport const HistoryExtension = createExtension(() => {\n return {\n key: \"history\",\n prosemirrorPlugins: [history()],\n undoCommand: undo,\n redoCommand: redo,\n } as const;\n});\n","import { posToDOMRect } from \"@tiptap/core\";\nimport { createExtension } from \"../../editor/BlockNoteExtension.js\";\n\nexport const LinkToolbarExtension = createExtension(({ editor }) => {\n function getLinkElementAtPos(pos: number) {\n let currentNode = editor.prosemirrorView.nodeDOM(pos);\n while (currentNode && currentNode.parentElement) {\n if (currentNode.nodeName === \"A\") {\n return currentNode as HTMLAnchorElement;\n }\n currentNode = currentNode.parentElement;\n }\n return null;\n }\n\n function getLinkAtPos(pos: number) {\n const linkData = editor.getLinkMarkAtPos(pos);\n if (!linkData) {\n return undefined;\n }\n\n return {\n range: { from: linkData.from, to: linkData.to },\n // Expose mark-like attrs for backward compat with React LinkToolbarController\n mark: { attrs: { href: linkData.href } },\n get text() {\n return linkData.text;\n },\n get position() {\n return posToDOMRect(\n editor.prosemirrorView,\n linkData.from,\n linkData.to,\n ).toJSON() as DOMRect;\n },\n };\n }\n\n function getLinkAtSelection() {\n return editor.transact((tr) => {\n if (!tr.selection.empty) {\n return undefined;\n }\n return getLinkAtPos(tr.selection.anchor);\n });\n }\n\n return {\n key: \"linkToolbar\",\n\n getLinkAtSelection,\n getLinkElementAtPos,\n getMarkAtPos(pos: number, _markType: string) {\n return getLinkAtPos(pos);\n },\n\n getLinkAtElement(element: HTMLElement) {\n return editor.transact(() => {\n const posAtElement = editor.prosemirrorView.posAtDOM(element, 0) + 1;\n return getLinkAtPos(posAtElement);\n });\n },\n\n editLink(\n url: string,\n text: string,\n position = editor.transact((tr) => tr.selection.anchor),\n ) {\n editor.editLink(url, text, position);\n },\n\n deleteLink(position = editor.transact((tr) => tr.selection.anchor)) {\n editor.deleteLink(position);\n },\n } as const;\n});\n","export const VALID_LINK_PROTOCOLS = [\n \"http\",\n \"https\",\n \"ftp\",\n \"ftps\",\n \"mailto\",\n \"tel\",\n \"callto\",\n \"sms\",\n \"cid\",\n \"xmpp\",\n];\nexport const DEFAULT_LINK_PROTOCOL = \"https\";\n","import { Plugin, PluginKey, TextSelection } from \"prosemirror-state\";\nimport { createExtension } from \"../../editor/BlockNoteExtension.js\";\n\nconst PLUGIN_KEY = new PluginKey(\"node-selection-keyboard\");\n// By default, typing with a node selection active will cause ProseMirror to\n// replace the node with one that contains editable content. This plugin blocks\n// this behaviour without also blocking things like keyboard shortcuts:\n//\n// - Lets through key presses that do not include alphanumeric characters. This\n// includes things like backspace/delete/home/end/etc.\n// - Lets through any key presses that include ctrl/meta keys. These will be\n// shortcuts of some kind like ctrl+C/mod+C.\n// - Special case for Enter key which creates a new paragraph block below and\n// sets the selection to it. This is just to bring the UX closer to Notion\n//\n// While a more elegant solution would probably process transactions instead of\n// keystrokes, this brings us most of the way to Notion's UX without much added\n// complexity.\nexport const NodeSelectionKeyboardExtension = createExtension(\n () =>\n ({\n key: \"nodeSelectionKeyboard\",\n prosemirrorPlugins: [\n new Plugin({\n key: PLUGIN_KEY,\n props: {\n handleKeyDown: (view, event) => {\n // Checks for node selection\n if (\"node\" in view.state.selection) {\n // Checks if key press uses ctrl/meta modifier\n if (event.ctrlKey || event.metaKey) {\n return false;\n }\n // Checks if key press is alphanumeric\n if (event.key.length === 1) {\n event.preventDefault();\n\n return true;\n }\n // Checks if key press is Enter\n if (\n event.key === \"Enter\" &&\n !event.isComposing &&\n !event.shiftKey &&\n !event.altKey &&\n !event.ctrlKey &&\n !event.metaKey\n ) {\n const tr = view.state.tr;\n view.dispatch(\n tr\n .insert(\n view.state.tr.selection.$to.after(),\n view.state.schema.nodes[\"paragraph\"].createChecked(),\n )\n .setSelection(\n new TextSelection(\n tr.doc.resolve(\n view.state.tr.selection.$to.after() + 1,\n ),\n ),\n ),\n );\n\n return true;\n }\n }\n\n return false;\n },\n },\n }),\n ],\n }) as const,\n);\n","import { Plugin, PluginKey } from \"prosemirror-state\";\nimport { Decoration, DecorationSet } from \"prosemirror-view\";\nimport { uuidv4 } from \"lib0/random\";\nimport {\n createExtension,\n ExtensionOptions,\n} from \"../../editor/BlockNoteExtension.js\";\nimport { BlockNoteEditorOptions } from \"../../editor/BlockNoteEditor.js\";\n\nconst PLUGIN_KEY = new PluginKey(`blocknote-placeholder`);\n\nexport const PlaceholderExtension = createExtension(\n ({\n editor,\n options,\n }: ExtensionOptions<\n Pick, \"placeholders\">\n >) => {\n const placeholders = options.placeholders;\n return {\n key: \"placeholder\",\n prosemirrorPlugins: [\n new Plugin({\n key: PLUGIN_KEY,\n view: (view) => {\n const uniqueEditorSelector = `placeholder-selector-${uuidv4()}`;\n view.dom.classList.add(uniqueEditorSelector);\n const styleEl = document.createElement(\"style\");\n\n const nonce = editor._tiptapEditor.options.injectNonce;\n if (nonce) {\n styleEl.setAttribute(\"nonce\", nonce);\n }\n\n if (view.root instanceof window.ShadowRoot) {\n view.root.append(styleEl);\n } else {\n view.root.head.appendChild(styleEl);\n }\n\n const styleSheet = styleEl.sheet!;\n\n const getSelector = (additionalSelectors = \"\") =>\n `.${uniqueEditorSelector} .bn-block-content${additionalSelectors}:has(.ProseMirror-trailingBreak:only-child):after`;\n\n try {\n // FIXME: the names \"default\" and \"emptyDocument\" are hardcoded\n const {\n default: defaultPlaceholder,\n emptyDocument: emptyPlaceholder,\n ...rest\n } = placeholders || {};\n\n // add block specific placeholders\n for (const [blockType, placeholder] of Object.entries(rest)) {\n const blockTypeSelector = `[data-content-type=\"${blockType}\"]`;\n\n styleSheet.insertRule(\n `${getSelector(blockTypeSelector)} { content: ${JSON.stringify(\n placeholder,\n )}; }`,\n );\n }\n\n const onlyBlockSelector = `[data-is-only-empty-block]`;\n const mustBeFocusedSelector = `[data-is-empty-and-focused]`;\n\n // placeholder for when there's only one empty block\n styleSheet.insertRule(\n `${getSelector(onlyBlockSelector)} { content: ${JSON.stringify(\n emptyPlaceholder,\n )}; }`,\n );\n\n // placeholder for default blocks, only when the cursor is in the block (mustBeFocused)\n styleSheet.insertRule(\n `${getSelector(mustBeFocusedSelector)} { content: ${JSON.stringify(\n defaultPlaceholder,\n )}; }`,\n );\n } catch (e) {\n // eslint-disable-next-line no-console\n console.warn(\n `Failed to insert placeholder CSS rule - this is likely due to the browser not supporting certain CSS pseudo-element selectors (:has, :only-child:, or :before)`,\n e,\n );\n }\n\n return {\n destroy: () => {\n if (view.root instanceof window.ShadowRoot) {\n view.root.removeChild(styleEl);\n } else {\n view.root.head.removeChild(styleEl);\n }\n },\n };\n },\n props: {\n decorations: (state) => {\n const { doc, selection } = state;\n\n if (!editor.isEditable) {\n return;\n }\n\n if (!selection.empty) {\n return;\n }\n\n // Don't show placeholder when the cursor is inside a code block\n if (selection.$from.parent.type.spec.code) {\n return;\n }\n\n const decs = [];\n\n // decoration for when there's only one empty block\n // positions are hardcoded for now\n if (state.doc.content.size === 6) {\n decs.push(\n Decoration.node(2, 4, {\n \"data-is-only-empty-block\": \"true\",\n }),\n );\n }\n\n const $pos = selection.$anchor;\n const node = $pos.parent;\n\n if (node.content.size === 0) {\n const before = $pos.before();\n\n decs.push(\n Decoration.node(before, before + node.nodeSize, {\n \"data-is-empty-and-focused\": \"true\",\n }),\n );\n }\n\n return DecorationSet.create(doc, decs);\n },\n },\n }),\n ],\n } as const;\n },\n);\n","import { findChildrenInRange } from \"@tiptap/core\";\nimport { Plugin, PluginKey } from \"prosemirror-state\";\nimport { Decoration, DecorationSet } from \"prosemirror-view\";\nimport { createExtension } from \"../../editor/BlockNoteExtension.js\";\n\nconst PLUGIN_KEY = new PluginKey(`previous-blocks`);\n\nconst nodeAttributes: Record = {\n // Numbered List Items\n index: \"index\",\n // Headings\n level: \"level\",\n // All Blocks\n type: \"type\",\n depth: \"depth\",\n \"depth-change\": \"depth-change\",\n};\n\n/**\n * This plugin tracks transformation of Block node attributes, so we can support CSS transitions.\n *\n * Problem it solves: ProseMirror recreates the DOM when transactions happen. So when a transaction changes a Node attribute,\n * it results in a completely new DOM element. This means CSS transitions don't work.\n *\n * Solution: When attributes change on a node, this plugin sets a data-* attribute with the \"previous\" value. This way we can still use CSS transitions. (See block.module.css)\n */\nexport const PreviousBlockTypeExtension = createExtension(() => {\n let timeout: ReturnType;\n return {\n key: \"previousBlockType\",\n prosemirrorPlugins: [\n new Plugin({\n key: PLUGIN_KEY,\n view(_editorView) {\n return {\n update: async (view, _prevState) => {\n if (this.key?.getState(view.state).updatedBlocks.size > 0) {\n // use setTimeout 0 to clear the decorations so that at least\n // for one DOM-render the decorations have been applied\n timeout = setTimeout(() => {\n view.dispatch(\n view.state.tr.setMeta(PLUGIN_KEY, { clearUpdate: true }),\n );\n }, 0);\n }\n },\n destroy: () => {\n if (timeout) {\n clearTimeout(timeout);\n }\n },\n };\n },\n state: {\n init() {\n return {\n // Block attributes, by block ID, from just before the previous transaction.\n prevTransactionOldBlockAttrs: {} as any,\n // Block attributes, by block ID, from just before the current transaction.\n currentTransactionOldBlockAttrs: {} as any,\n // Set of IDs of blocks whose attributes changed from the current transaction.\n updatedBlocks: new Set(),\n };\n },\n\n apply(transaction, prev, oldState, newState) {\n prev.currentTransactionOldBlockAttrs = {};\n prev.updatedBlocks.clear();\n\n if (!transaction.docChanged) {\n return prev;\n }\n\n // Only check nodes affected by the transaction, not the entire document.\n // changedRange() is O(steps) unlike tiptap's getChangedRanges which is O(steps²).\n const newRange = transaction.changedRange();\n if (!newRange) {\n return prev;\n }\n\n // Map the new-doc range back to old-doc coordinates\n const invertedMapping = transaction.mapping.invert();\n const oldRange = {\n from: invertedMapping.map(newRange.from, -1),\n to: invertedMapping.map(newRange.to, 1),\n };\n\n const currentTransactionOriginalOldBlockAttrs = {} as any;\n\n const oldNodes = findChildrenInRange(\n oldState.doc,\n oldRange,\n (node) => node.attrs.id,\n );\n const oldNodesById = new Map(\n oldNodes.map((node) => [node.node.attrs.id, node]),\n );\n const newNodes = findChildrenInRange(\n newState.doc,\n newRange,\n (node) => node.attrs.id,\n );\n\n for (const node of newNodes) {\n const oldNode = oldNodesById.get(node.node.attrs.id);\n\n const oldContentNode = oldNode?.node.firstChild;\n const newContentNode = node.node.firstChild;\n\n if (oldNode && oldContentNode && newContentNode) {\n const newAttrs = {\n index: newContentNode.attrs.index,\n level: newContentNode.attrs.level,\n type: newContentNode.type.name,\n depth: newState.doc.resolve(node.pos).depth,\n };\n\n const oldAttrs = {\n index: oldContentNode.attrs.index,\n level: oldContentNode.attrs.level,\n type: oldContentNode.type.name,\n depth: oldState.doc.resolve(oldNode.pos).depth,\n };\n\n currentTransactionOriginalOldBlockAttrs[\n node.node.attrs.id\n ] = oldAttrs;\n\n prev.currentTransactionOldBlockAttrs[node.node.attrs.id] =\n oldAttrs;\n\n if (\n oldAttrs.index !== newAttrs.index ||\n oldAttrs.level !== newAttrs.level ||\n oldAttrs.type !== newAttrs.type ||\n oldAttrs.depth !== newAttrs.depth\n ) {\n (oldAttrs as any)[\"depth-change\"] =\n oldAttrs.depth - newAttrs.depth;\n\n prev.updatedBlocks.add(node.node.attrs.id);\n }\n }\n }\n\n prev.prevTransactionOldBlockAttrs =\n currentTransactionOriginalOldBlockAttrs;\n\n return prev;\n },\n },\n props: {\n decorations(state) {\n const pluginState = (this as Plugin).getState(state);\n if (pluginState.updatedBlocks.size === 0) {\n return undefined;\n }\n\n const decorations: Decoration[] = [];\n\n state.doc.descendants((node, pos) => {\n if (!node.attrs.id) {\n return;\n }\n\n if (!pluginState.updatedBlocks.has(node.attrs.id)) {\n return;\n }\n\n const prevAttrs =\n pluginState.currentTransactionOldBlockAttrs[node.attrs.id];\n const decorationAttrs: any = {};\n\n for (const [nodeAttr, val] of Object.entries(prevAttrs)) {\n decorationAttrs[\"data-prev-\" + nodeAttributes[nodeAttr]] =\n val || \"none\";\n }\n\n decorations.push(\n Decoration.node(pos, pos + node.nodeSize, {\n ...decorationAttrs,\n }),\n );\n });\n\n return DecorationSet.create(state.doc, decorations);\n },\n },\n }),\n ],\n } as const;\n});\n","import { EditorView } from \"prosemirror-view\";\n\nexport function getDraggableBlockFromElement(\n element: Element,\n view: EditorView,\n) {\n while (\n element &&\n element.parentElement &&\n element.parentElement !== view.dom &&\n element.getAttribute?.(\"data-node-type\") !== \"blockContainer\"\n ) {\n element = element.parentElement;\n }\n if (element.getAttribute?.(\"data-node-type\") !== \"blockContainer\") {\n return undefined;\n }\n return { node: element as HTMLElement, id: element.getAttribute(\"data-id\")! };\n}\n","/**\n * Custom HTML-to-Markdown serializer for BlockNote.\n * Replaces the unified/rehype-remark pipeline with a direct DOM-based implementation.\n *\n * Input: HTML string from createExternalHTMLExporter\n * Output: GFM-compatible markdown string\n */\n\n/**\n * Convert an HTML string (from BlockNote's external HTML exporter) to markdown.\n */\nexport function htmlToMarkdown(html: string): string {\n // Use a temporary element to parse HTML. This works in both browser and\n // server (JSDOM) environments, unlike `new DOMParser()` which may not be\n // globally available in Node.js.\n const container = document.createElement(\"div\");\n container.innerHTML = html;\n const result = serializeChildren(container, {\n indent: \"\",\n inListItem: false,\n });\n return result.trim() + \"\\n\";\n}\n\ninterface SerializeContext {\n indent: string; // current indentation prefix for list nesting\n // True when the current node is being serialized as continuation content\n // of a parent list item. Used to suppress trailing blank lines that would\n // otherwise turn the parent list into a \"loose\" list.\n inListItem: boolean;\n}\n\n// ─── Main Serializer ─────────────────────────────────────────────────────────\n\nfunction serializeChildren(node: Node, ctx: SerializeContext): string {\n let result = \"\";\n const children = Array.from(node.childNodes);\n\n for (let i = 0; i < children.length; i++) {\n const child = children[i];\n result += serializeNode(child, ctx);\n }\n\n return result;\n}\n\nfunction serializeNode(node: Node, ctx: SerializeContext): string {\n if (node.nodeType === 3 /* Node.TEXT_NODE */) {\n return node.textContent || \"\";\n }\n\n if (node.nodeType !== 1 /* Node.ELEMENT_NODE */) {\n return \"\";\n }\n\n const el = node as HTMLElement;\n const tag = el.tagName.toLowerCase();\n\n switch (tag) {\n case \"p\":\n return serializeParagraph(el, ctx);\n case \"h1\":\n case \"h2\":\n case \"h3\":\n case \"h4\":\n case \"h5\":\n case \"h6\":\n return serializeHeading(el, ctx);\n case \"blockquote\":\n return serializeBlockquote(el, ctx);\n case \"pre\":\n return serializeCodeBlock(el, ctx);\n case \"ul\":\n return serializeUnorderedList(el, ctx);\n case \"ol\":\n return serializeOrderedList(el, ctx);\n case \"table\":\n return serializeTable(el, ctx);\n case \"hr\":\n return ctx.indent + \"***\\n\\n\";\n case \"img\":\n return serializeImage(el, ctx);\n case \"video\":\n return serializeVideo(el, ctx);\n case \"audio\":\n return serializeAudio(el, ctx);\n case \"embed\":\n return serializeEmbed(el, ctx);\n case \"figure\":\n return serializeFigure(el, ctx);\n case \"a\":\n // Block-level link (file block)\n return serializeBlockLink(el, ctx);\n case \"details\":\n return serializeDetails(el, ctx);\n case \"div\":\n // Page break or generic container — serialize children\n return serializeChildren(el, ctx);\n case \"br\":\n return \"\";\n default:\n return serializeChildren(el, ctx);\n }\n}\n\n// ─── Block Serializers ───────────────────────────────────────────────────────\n\nfunction serializeParagraph(el: HTMLElement, ctx: SerializeContext): string {\n const content = serializeInlineContent(el);\n // Trim leading/trailing hard breaks (matching remark behavior)\n const trimmed = trimHardBreaks(content);\n if (ctx.inListItem) {\n return trimmed;\n }\n return ctx.indent + trimmed + \"\\n\\n\";\n}\n\nfunction serializeHeading(el: HTMLElement, ctx: SerializeContext): string {\n const level = parseInt(el.tagName[1], 10);\n const prefix = \"#\".repeat(level) + \" \";\n const content = serializeInlineContent(el);\n return ctx.indent + prefix + content + \"\\n\\n\";\n}\n\nfunction serializeBlockquote(el: HTMLElement, ctx: SerializeContext): string {\n // Check if blockquote contains block-level elements (like

)\n const blockChildren = Array.from(el.children).filter((child) => {\n const tag = child.tagName.toLowerCase();\n return [\"p\", \"ul\", \"ol\", \"pre\", \"blockquote\", \"table\", \"hr\"].includes(tag);\n });\n\n let content: string;\n if (blockChildren.length > 0) {\n // Has block-level children — serialize each\n const parts: string[] = [];\n for (const child of blockChildren) {\n const tag = child.tagName.toLowerCase();\n if (tag === \"p\") {\n parts.push(serializeInlineContent(child as HTMLElement));\n } else {\n const innerCtx: SerializeContext = { indent: \"\", inListItem: false };\n parts.push(serializeNode(child, innerCtx).trim());\n }\n }\n content = parts.join(\"\\n\\n\");\n } else {\n // No block-level children — treat entire content as inline\n content = serializeInlineContent(el);\n }\n\n const lines = content.split(\"\\n\");\n return lines.map((line) => ctx.indent + \"> \" + line).join(\"\\n\") + \"\\n\\n\";\n}\n\nfunction serializeCodeBlock(el: HTMLElement, ctx: SerializeContext): string {\n const codeEl = el.querySelector(\"code\");\n if (!codeEl) {return \"\";}\n\n const language =\n codeEl.getAttribute(\"data-language\") ||\n extractLanguageFromClass(codeEl.className) ||\n \"\";\n\n // Extract code content, handling
elements as newlines\n const code = extractCodeContent(codeEl);\n\n // Use a fence longer than the longest backtick run in the code\n const longestRun = Math.max(\n 0,\n ...((code.match(/`+/g) ?? []).map((run) => run.length))\n );\n const fence = \"`\".repeat(Math.max(3, longestRun + 1));\n\n // For empty code blocks, don't add a newline between the fences\n if (!code) {\n return ctx.indent + fence + language + \"\\n\" + fence + \"\\n\\n\";\n }\n\n return (\n ctx.indent +\n fence +\n language +\n \"\\n\" +\n code +\n (code.endsWith(\"\\n\") ? \"\" : \"\\n\") +\n fence +\n \"\\n\\n\"\n );\n}\n\nfunction extractCodeContent(el: Element): string {\n let result = \"\";\n for (const child of Array.from(el.childNodes)) {\n if (child.nodeType === 3 /* Node.TEXT_NODE */) {\n result += child.textContent || \"\";\n } else if (child.nodeType === 1 /* Node.ELEMENT_NODE */) {\n const tag = (child as HTMLElement).tagName.toLowerCase();\n if (tag === \"br\") {\n result += \"\\n\";\n } else {\n result += extractCodeContent(child as Element);\n }\n }\n }\n return result;\n}\n\nfunction extractLanguageFromClass(className: string): string {\n const match = className.match(/language-(\\S+)/);\n return match ? match[1] : \"\";\n}\n\nfunction serializeUnorderedList(\n el: HTMLElement,\n ctx: SerializeContext\n): string {\n let result = \"\";\n const items = Array.from(el.children).filter(\n (child) => child.tagName.toLowerCase() === \"li\"\n );\n\n for (const item of items) {\n result += serializeListItem(item as HTMLElement, \"bullet\", ctx);\n }\n\n // Trailing blank line separates the list from the next block. Skip when\n // this list is nested inside another list item — adding it would convert\n // the parent list into a \"loose\" list (or break tightness).\n if (!ctx.inListItem) {\n result += \"\\n\";\n }\n return result;\n}\n\nfunction serializeOrderedList(el: HTMLElement, ctx: SerializeContext): string {\n let result = \"\";\n const items = Array.from(el.children).filter(\n (child) => child.tagName.toLowerCase() === \"li\"\n );\n const startNum = parseInt(el.getAttribute(\"start\") || \"1\", 10);\n\n for (let i = 0; i < items.length; i++) {\n const num = startNum + i;\n result += serializeListItem(items[i] as HTMLElement, \"ordered\", ctx, num);\n }\n\n if (!ctx.inListItem) {\n result += \"\\n\";\n }\n return result;\n}\n\nfunction serializeListItem(\n el: HTMLElement,\n listType: \"bullet\" | \"ordered\",\n ctx: SerializeContext,\n num?: number\n): string {\n // Check for checkbox (task list) - direct children only\n let checkbox: HTMLInputElement | null = null;\n let details: HTMLElement | null = null;\n\n for (const child of Array.from(el.children)) {\n const tag = child.tagName.toLowerCase();\n if (tag === \"input\" && (child as HTMLInputElement).type === \"checkbox\") {\n checkbox = child as HTMLInputElement;\n }\n if (tag === \"details\") {\n details = child as HTMLElement;\n }\n }\n\n let marker: string;\n let markerWidth: number;\n\n if (checkbox) {\n const state = checkbox.checked ? \"[x]\" : \"[ ]\";\n marker = `* ${state} `;\n // For child indentation, use bullet width (2), not full checkbox marker width\n markerWidth = 2;\n } else if (listType === \"ordered\") {\n marker = `${num}. `;\n markerWidth = marker.length;\n } else {\n marker = \"* \";\n markerWidth = 2;\n }\n\n // Collect the item's inline content\n let inlineContent: string;\n let firstContentEl: Element | null;\n\n if (details) {\n // Toggle item: get content from summary\n const summary = details.querySelector(\"summary\");\n const summaryP = summary?.querySelector(\"p\");\n firstContentEl = details;\n inlineContent = summaryP ? serializeInlineContent(summaryP) : \"\";\n } else {\n firstContentEl = getFirstContentElement(el, checkbox);\n inlineContent = firstContentEl ? serializeInlineContent(firstContentEl) : \"\";\n }\n\n // The marker line ends with a single `\\n` so that consecutive list items\n // produce a \"tight\" list (no blank line between markers). Continuation\n // content within the item (nested lists, continuation paragraphs, other\n // blocks) injects its own spacing as needed.\n let result = ctx.indent + marker + inlineContent + \"\\n\";\n\n // Serialize child content (nested lists, continuation paragraphs, etc.)\n const childIndent = ctx.indent + \" \".repeat(markerWidth);\n const childCtx: SerializeContext = { indent: childIndent, inListItem: true };\n\n // For toggle items, also serialize children inside the details element\n if (details) {\n const summary = details.querySelector(\"summary\");\n for (const child of Array.from(details.children)) {\n if (child === summary) {continue;}\n const childTag = child.tagName.toLowerCase();\n if (childTag === \"p\") {\n const content = serializeInlineContent(child as HTMLElement);\n // Continuation paragraph needs a blank line to separate it from the\n // previous content; CommonMark would otherwise treat it as a soft\n // wrap of that content.\n result += \"\\n\" + childIndent + content + \"\\n\";\n } else {\n result += serializeNode(child, childCtx);\n }\n }\n }\n\n const children = Array.from(el.children);\n for (const child of children) {\n const childTag = child.tagName.toLowerCase();\n\n // Skip the first content element and checkbox\n if (child === firstContentEl || (child as HTMLElement) === checkbox) {continue;}\n if (childTag === \"input\") {continue;}\n\n // Nested lists and other block content\n if (childTag === \"ul\" || childTag === \"ol\") {\n // Nested list flows directly under the parent marker — no blank line.\n result += serializeNode(child, childCtx);\n } else if (childTag === \"p\") {\n // Continuation paragraph within list item — requires blank line before\n // so it isn't read as part of the marker line's text.\n const content = serializeInlineContent(child as HTMLElement);\n result += \"\\n\" + childIndent + content + \"\\n\";\n } else {\n // Other block-level children (code blocks, blockquotes, etc.) already\n // emit their own separating newlines; prefix with a blank line so they\n // are recognized as separate blocks.\n result += \"\\n\" + serializeNode(child, childCtx);\n }\n }\n\n return result;\n}\n\nfunction getFirstContentElement(\n li: HTMLElement,\n checkbox: HTMLInputElement | null\n): HTMLElement | null {\n for (const child of Array.from(li.children)) {\n if (child === checkbox) {continue;}\n if (child.tagName.toLowerCase() === \"input\") {continue;}\n const tag = child.tagName.toLowerCase();\n if (tag === \"p\" || tag === \"span\") {return child as HTMLElement;}\n }\n return null;\n}\n\n// ─── Table Serializer ────────────────────────────────────────────────────────\n\nfunction serializeTable(el: HTMLElement, ctx: SerializeContext): string {\n // First, determine column count from colgroup or first row\n const colgroup = el.querySelector(\"colgroup\");\n let colCount = 0;\n\n if (colgroup) {\n colCount = colgroup.querySelectorAll(\"col\").length;\n }\n\n const rows: string[][] = [];\n let hasHeader = false;\n\n // Collect all rows, handling colspan/rowspan\n const trElements = el.querySelectorAll(\"tr\");\n // Build a grid to handle colspan/rowspan\n const grid: (string | null)[][] = [];\n\n trElements.forEach((tr, rowIdx) => {\n if (!grid[rowIdx]) {grid[rowIdx] = [];}\n const cellElements = tr.querySelectorAll(\"th, td\");\n let gridCol = 0;\n\n cellElements.forEach((cell) => {\n // Find next empty column in this row\n while (grid[rowIdx][gridCol] !== undefined) {gridCol++;}\n\n if (rowIdx === 0 && cell.tagName.toLowerCase() === \"th\") {\n hasHeader = true;\n }\n\n const content = escapeTableCell(\n serializeInlineContent(cell as HTMLElement).trim()\n );\n const colspan = parseInt(cell.getAttribute(\"colspan\") || \"1\", 10);\n const rowspan = parseInt(cell.getAttribute(\"rowspan\") || \"1\", 10);\n\n // Fill the grid\n for (let r = 0; r < rowspan; r++) {\n for (let c = 0; c < colspan; c++) {\n const ri = rowIdx + r;\n if (!grid[ri]) {grid[ri] = [];}\n grid[ri][gridCol + c] = r === 0 && c === 0 ? content : \"\";\n }\n }\n\n gridCol += colspan;\n });\n\n // Update colCount\n if (grid[rowIdx]) {\n colCount = Math.max(colCount, grid[rowIdx].length);\n }\n });\n\n // Convert grid to rows\n for (const gridRow of grid) {\n const row: string[] = [];\n for (let c = 0; c < colCount; c++) {\n row.push(gridRow && gridRow[c] !== undefined ? (gridRow[c] ?? \"\") : \"\");\n }\n rows.push(row);\n }\n\n if (rows.length === 0) {return \"\";}\n\n // Determine column widths\n const colWidths: number[] = [];\n for (let c = 0; c < colCount; c++) {\n let maxWidth = 3; // minimum width for separator \"---\"\n for (const row of rows) {\n const cellWidth = c < row.length ? row[c].length : 0;\n maxWidth = Math.max(maxWidth, cellWidth);\n }\n // Use minimum of 10 to match remark output\n colWidths.push(Math.max(maxWidth, 10));\n }\n\n let result = \"\";\n\n if (hasHeader) {\n result += ctx.indent + formatTableRow(rows[0], colWidths, colCount) + \"\\n\";\n result += ctx.indent + formatSeparatorRow(colWidths, colCount) + \"\\n\";\n for (let r = 1; r < rows.length; r++) {\n result +=\n ctx.indent + formatTableRow(rows[r], colWidths, colCount) + \"\\n\";\n }\n } else {\n // No header — emit empty header + separator\n const emptyRow = new Array(colCount).fill(\"\");\n result += ctx.indent + formatTableRow(emptyRow, colWidths, colCount) + \"\\n\";\n result += ctx.indent + formatSeparatorRow(colWidths, colCount) + \"\\n\";\n for (const row of rows) {\n result +=\n ctx.indent + formatTableRow(row, colWidths, colCount) + \"\\n\";\n }\n }\n\n result += \"\\n\";\n return result;\n}\n\nfunction escapeTableCell(text: string): string {\n return text.replace(/\\|/g, \"\\\\|\");\n}\n\nfunction formatTableRow(\n cells: string[],\n colWidths: number[],\n colCount: number\n): string {\n const parts: string[] = [];\n for (let c = 0; c < colCount; c++) {\n const cell = c < cells.length ? cells[c] : \"\";\n parts.push(\" \" + cell.padEnd(colWidths[c]) + \" \");\n }\n return \"|\" + parts.join(\"|\") + \"|\";\n}\n\nfunction formatSeparatorRow(colWidths: number[], colCount: number): string {\n const parts: string[] = [];\n for (let c = 0; c < colCount; c++) {\n parts.push(\" \" + \"-\".repeat(colWidths[c]) + \" \");\n }\n return \"|\" + parts.join(\"|\") + \"|\";\n}\n\n// ─── Media Serializers ───────────────────────────────────────────────────────\n\nfunction serializeImage(el: HTMLElement, ctx: SerializeContext): string {\n const src = el.getAttribute(\"src\") || \"\";\n const alt = el.getAttribute(\"alt\") || \"\";\n // Empty placeholder — preserve the block-level break, matching how\n // serializeParagraph/serializeHeading emit `\\n\\n` for empty content.\n if (!src) {return \"\\n\\n\";}\n return ctx.indent + `![${alt}](${src})\\n\\n`;\n}\n\nfunction serializeVideo(el: HTMLElement, ctx: SerializeContext): string {\n const src =\n el.getAttribute(\"src\") || el.getAttribute(\"data-url\") || \"\";\n const name = el.getAttribute(\"data-name\") || el.getAttribute(\"title\") || \"\";\n if (!src) {return \"\\n\\n\";}\n return ctx.indent + `![${name}](${src})\\n\\n`;\n}\n\nfunction serializeAudio(el: HTMLElement, ctx: SerializeContext): string {\n const src = el.getAttribute(\"src\") || \"\";\n if (!src) {return \"\\n\\n\";}\n // Audio has no markdown syntax, so emit raw HTML. The markdown parser\n // passes

${escapeHtmlText(captionText)}
`\n : \"\";\n return ctx.indent + `
${tag}${captionPart}
\\n\\n`;\n}\n\nfunction escapeHtmlAttr(value: string): string {\n return value\n .replace(/&/g, \"&\")\n .replace(/\"/g, \""\")\n .replace(//g, \">\");\n}\n\nfunction escapeHtmlText(value: string): string {\n return value\n .replace(/&/g, \"&\")\n .replace(//g, \">\");\n}\n\nfunction serializeBlockLink(el: HTMLElement, ctx: SerializeContext): string {\n const href = el.getAttribute(\"href\") || \"\";\n const text = el.textContent?.trim() || \"\";\n if (!href) {return ctx.indent + text + \"\\n\\n\";}\n return ctx.indent + formatLink(text, href) + \"\\n\\n\";\n}\n\n/**\n * Render a link, mirroring the remark-stringify behavior from\n * TypeCellOS/BlockNote#2661: when the link label equals the URL (or is\n * empty), emit the bare URL so that pasting the link into another input\n * produces a valid href instead of ``-autolink brackets or redundant\n * `[url](url)` markup. Otherwise emit `[text](url)` with the URL escaped so\n * a `)` inside the URL does not prematurely close the destination.\n */\nfunction formatLink(text: string, href: string): string {\n if (!text || text === href) {\n return href;\n }\n return `[${text}](${escapeLinkDestination(href)})`;\n}\n\nfunction escapeLinkDestination(url: string): string {\n return url.replace(/[\\\\()]/g, \"\\\\$&\");\n}\n\nfunction serializeDetails(el: HTMLElement, ctx: SerializeContext): string {\n // Toggle heading or toggle list item\n const summary = el.querySelector(\"summary\");\n if (!summary) {return serializeChildren(el, ctx);}\n\n // Check if summary contains a heading\n const heading = summary.querySelector(\"h1, h2, h3, h4, h5, h6\");\n if (heading) {\n let result = serializeHeading(heading as HTMLElement, ctx);\n // Also serialize non-summary children of details\n for (const child of Array.from(el.children)) {\n if (child !== summary) {\n result += serializeNode(child, ctx);\n }\n }\n return result;\n }\n\n // Otherwise serialize the summary content\n return serializeChildren(summary, ctx);\n}\n\n// ─── Inline Content Serializer ───────────────────────────────────────────────\n\nfunction serializeInlineContent(el: Element): string {\n let result = \"\";\n\n for (const child of Array.from(el.childNodes)) {\n if (child.nodeType === 3 /* Node.TEXT_NODE */) {\n result += child.textContent || \"\";\n } else if (child.nodeType === 1 /* Node.ELEMENT_NODE */) {\n const childEl = child as HTMLElement;\n const tag = childEl.tagName.toLowerCase();\n\n switch (tag) {\n case \"strong\":\n case \"b\": {\n const inner = serializeInlineContent(childEl);\n const { content, trailing } = extractTrailingWhitespace(inner);\n if (content) {\n result += `**${content}**${trailing}`;\n } else {\n // All whitespace — just output it without emphasis\n result += trailing;\n }\n break;\n }\n case \"em\":\n case \"i\": {\n const inner = serializeInlineContent(childEl);\n const { content, trailing } = extractTrailingWhitespace(inner);\n if (content) {\n result += `*${content}*${trailing}`;\n } else {\n result += trailing;\n }\n break;\n }\n case \"s\":\n case \"del\":\n result += `~~${serializeInlineContent(childEl)}~~`;\n break;\n case \"code\": {\n const text = childEl.textContent || \"\";\n const longestRun = Math.max(\n 0,\n ...((text.match(/`+/g) ?? []).map((run) => run.length))\n );\n const fence = \"`\".repeat(longestRun + 1);\n const needsPadding =\n text.startsWith(\"`\") || text.endsWith(\"`\");\n result += fence + (needsPadding ? ` ${text} ` : text) + fence;\n break;\n }\n case \"u\":\n // No markdown equivalent — strip the tag, keep content\n result += serializeInlineContent(childEl);\n break;\n case \"a\": {\n const href = childEl.getAttribute(\"href\") || \"\";\n const text = serializeInlineContent(childEl);\n result += formatLink(text, href);\n break;\n }\n case \"br\":\n result += \"\\\\\\n\";\n break;\n case \"span\":\n // Color spans, etc. — strip the tag, keep content\n result += serializeInlineContent(childEl);\n break;\n case \"img\": {\n const src = childEl.getAttribute(\"src\") || \"\";\n const alt = childEl.getAttribute(\"alt\") || \"\";\n result += `![${alt}](${src})`;\n break;\n }\n case \"video\": {\n const src =\n childEl.getAttribute(\"src\") ||\n childEl.getAttribute(\"data-url\") ||\n \"\";\n const name =\n childEl.getAttribute(\"data-name\") ||\n childEl.getAttribute(\"title\") ||\n \"\";\n result += `![${name}](${src})`;\n break;\n }\n case \"p\":\n // Paragraph inside inline context (e.g., table cell)\n result += serializeInlineContent(childEl);\n break;\n case \"input\":\n // Checkbox in task list — handled at block level\n break;\n default:\n result += serializeInlineContent(childEl);\n break;\n }\n }\n }\n\n return result;\n}\n\n/**\n * Extract trailing whitespace from emphasis content.\n * Moves trailing spaces outside the emphasis delimiters to produce valid markdown.\n * E.g., `Bold ` → `**Bold** ` instead of `**Bold **`.\n */\nfunction extractTrailingWhitespace(text: string): {\n content: string;\n trailing: string;\n} {\n const match = text.match(/^(.*?)(\\s*)$/);\n if (match) {\n return { content: match[1], trailing: match[2] };\n }\n return { content: text, trailing: \"\" };\n}\n\n/**\n * Escape leading character after emphasis if it could break parsing.\n * For example, \"Heading\" after \"**Bold **\" — the 'H' should be escaped\n * if the trailing space was escaped.\n */\n\n/**\n * Trim leading/trailing hard breaks from inline content.\n * Matches remark behavior where
at start/end of paragraph is dropped.\n */\nfunction trimHardBreaks(content: string): string {\n // Remove leading hard breaks\n let result = content.replace(/^(\\\\\\n)+/, \"\");\n // Remove trailing hard breaks produced by `
`\n result = result.replace(/(\\\\\\n)+$/, \"\");\n return result;\n}\n","import { Schema } from \"prosemirror-model\";\n\nimport { PartialBlock } from \"../../../blocks/defaultBlocks.js\";\nimport type { BlockNoteEditor } from \"../../../editor/BlockNoteEditor.js\";\nimport {\n BlockSchema,\n InlineContentSchema,\n StyleSchema,\n} from \"../../../schema/index.js\";\nimport { createExternalHTMLExporter } from \"../html/externalHTMLExporter.js\";\nimport { htmlToMarkdown } from \"./htmlToMarkdown.js\";\n\n// Needs to be sync because it's used in drag handler event (SideMenuPlugin)\nexport function cleanHTMLToMarkdown(cleanHTMLString: string) {\n return htmlToMarkdown(cleanHTMLString);\n}\n\nexport function blocksToMarkdown<\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n>(\n blocks: PartialBlock[],\n schema: Schema,\n editor: BlockNoteEditor,\n options: { document?: Document },\n): string {\n const exporter = createExternalHTMLExporter(schema, editor);\n const externalHTML = exporter.exportBlocks(blocks, options);\n\n return cleanHTMLToMarkdown(externalHTML);\n}\n","import { Fragment } from \"@tiptap/pm/model\";\nimport {\n BlockNoDefaults,\n BlockSchema,\n InlineContentSchema,\n StyleSchema,\n} from \"../../schema/index.js\";\nimport { getPmSchema } from \"../pmUtil.js\";\nimport { nodeToBlock } from \"./nodeToBlock.js\";\n\n/**\n * Converts all Blocks within a fragment to BlockNote blocks.\n */\nexport function fragmentToBlocks<\n B extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n>(fragment: Fragment) {\n // first convert selection to blocknote-style blocks, and then\n // pass these to the exporter\n const blocks: BlockNoDefaults[] = [];\n fragment.descendants((node) => {\n const pmSchema = getPmSchema(node);\n if (node.type.name === \"blockContainer\") {\n if (node.firstChild?.type.name === \"blockGroup\") {\n // selection started within a block group\n // in this case the fragment starts with:\n // \n // \n // \n // \n // \n // \n //\n // instead of:\n // \n // \n // \n // \n // \n // \n // \n //\n // so we don't need to serialize this block, just descend into the children of the blockGroup\n return true;\n }\n }\n\n if (node.type.name === \"columnList\" && node.childCount === 1) {\n // column lists with a single column should be flattened (not the entire column list has been selected)\n node.firstChild?.forEach((child) => {\n blocks.push(nodeToBlock(child, pmSchema));\n });\n return false;\n }\n\n if (node.type.isInGroup(\"bnBlock\")) {\n blocks.push(nodeToBlock(node, pmSchema));\n // don't descend into children, as they're already included in the block returned by nodeToBlock\n return false;\n }\n return true;\n });\n return blocks;\n}\n","import { Fragment, Node, ResolvedPos, Slice } from \"prosemirror-model\";\nimport { Selection } from \"prosemirror-state\";\nimport { Mappable } from \"prosemirror-transform\";\n\n/**\n * This class represents an editor selection which spans multiple nodes/blocks. It's currently only used to allow users\n * to drag multiple blocks at the same time. Expects the selection anchor and head to be between nodes, i.e. just before\n * the first target node and just after the last, and that anchor and head are at the same nesting level.\n *\n * Partially based on ProseMirror's NodeSelection implementation:\n * (https://github.com/ProseMirror/prosemirror-state/blob/master/src/selection.ts)\n * MultipleNodeSelection differs from NodeSelection in the following ways:\n * 1. Stores which nodes are included in the selection instead of just a single node.\n * 2. Already expects the selection to start just before the first target node and ends just after the last, while a\n * NodeSelection automatically sets both anchor and head to just before the single target node.\n */\nexport class MultipleNodeSelection extends Selection {\n nodes: Array;\n\n constructor($anchor: ResolvedPos, $head: ResolvedPos) {\n super($anchor, $head);\n\n // Parent is at the same nesting level as anchor/head since they are just before/ just after target nodes.\n const parentNode = $anchor.node();\n\n this.nodes = [];\n $anchor.doc.nodesBetween($anchor.pos, $head.pos, (node, _pos, parent) => {\n if (parent !== null && parent.eq(parentNode)) {\n this.nodes.push(node);\n return false;\n }\n return;\n });\n }\n\n static create(doc: Node, from: number, to = from): MultipleNodeSelection {\n return new MultipleNodeSelection(doc.resolve(from), doc.resolve(to));\n }\n\n content(): Slice {\n return new Slice(Fragment.from(this.nodes), 0, 0);\n }\n\n eq(selection: Selection): boolean {\n if (!(selection instanceof MultipleNodeSelection)) {\n return false;\n }\n\n if (this.nodes.length !== selection.nodes.length) {\n return false;\n }\n\n if (this.from !== selection.from || this.to !== selection.to) {\n return false;\n }\n\n for (let i = 0; i < this.nodes.length; i++) {\n if (!this.nodes[i].eq(selection.nodes[i])) {\n return false;\n }\n }\n\n return true;\n }\n\n map(doc: Node, mapping: Mappable): Selection {\n const fromResult = mapping.mapResult(this.from);\n const toResult = mapping.mapResult(this.to);\n\n if (toResult.deleted) {\n return Selection.near(doc.resolve(fromResult.pos));\n }\n\n if (fromResult.deleted) {\n return Selection.near(doc.resolve(toResult.pos));\n }\n\n return new MultipleNodeSelection(\n doc.resolve(fromResult.pos),\n doc.resolve(toResult.pos),\n );\n }\n\n toJSON(): any {\n return { type: \"multiple-node\", anchor: this.anchor, head: this.head };\n }\n}\n\nSelection.jsonID(\"multiple-node\", MultipleNodeSelection);\n","import { Node } from \"prosemirror-model\";\nimport { NodeSelection, Selection } from \"prosemirror-state\";\nimport { EditorView } from \"prosemirror-view\";\n\nimport { createExternalHTMLExporter } from \"../../api/exporters/html/externalHTMLExporter.js\";\nimport { cleanHTMLToMarkdown } from \"../../api/exporters/markdown/markdownExporter.js\";\nimport { fragmentToBlocks } from \"../../api/nodeConversions/fragmentToBlocks.js\";\nimport { getNodeById } from \"../../api/nodeUtil.js\";\nimport { Block } from \"../../blocks/defaultBlocks.js\";\nimport type { BlockNoteEditor } from \"../../editor/BlockNoteEditor.js\";\nimport { UiElementPosition } from \"../../extensions-shared/UiElementPosition.js\";\nimport {\n BlockSchema,\n InlineContentSchema,\n StyleSchema,\n} from \"../../schema/index.js\";\nimport { MultipleNodeSelection } from \"./MultipleNodeSelection.js\";\n\nlet dragImageElement: Element | undefined;\n\nexport type SideMenuState<\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n> = UiElementPosition & {\n // The block that the side menu is attached to.\n block: Block;\n};\n\nfunction blockPositionsFromSelection(selection: Selection, doc: Node) {\n // Absolute positions just before the first block spanned by the selection, and just after the last block. Having the\n // selection start and end just before and just after the target blocks ensures no whitespace/line breaks are left\n // behind after dragging & dropping them.\n let beforeFirstBlockPos: number;\n let afterLastBlockPos: number;\n\n // Even the user starts dragging blocks but drops them in the same place, the selection will still be moved just\n // before & just after the blocks spanned by the selection, and therefore doesn't need to change if they try to drag\n // the same blocks again. If this happens, the anchor & head move out of the block content node they were originally\n // in. If the anchor should update but the head shouldn't and vice versa, it means the user selection is outside a\n // block content node, which should never happen.\n const selectionStartInBlockContent =\n doc.resolve(selection.from).node().type.spec.group === \"blockContent\";\n const selectionEndInBlockContent =\n doc.resolve(selection.to).node().type.spec.group === \"blockContent\";\n\n // Ensures that entire outermost nodes are selected if the selection spans multiple nesting levels.\n const minDepth = Math.min(selection.$anchor.depth, selection.$head.depth);\n\n if (selectionStartInBlockContent && selectionEndInBlockContent) {\n // Absolute positions at the start of the first block in the selection and at the end of the last block. User\n // selections will always start and end in block content nodes, but we want the start and end positions of their\n // parent block nodes, which is why minDepth - 1 is used.\n const startFirstBlockPos = selection.$from.start(minDepth - 1);\n const endLastBlockPos = selection.$to.end(minDepth - 1);\n\n // Shifting start and end positions by one moves them just outside the first and last selected blocks.\n beforeFirstBlockPos = doc.resolve(startFirstBlockPos - 1).pos;\n afterLastBlockPos = doc.resolve(endLastBlockPos + 1).pos;\n } else {\n beforeFirstBlockPos = selection.from;\n afterLastBlockPos = selection.to;\n }\n\n return { from: beforeFirstBlockPos, to: afterLastBlockPos };\n}\n\nfunction setDragImage(view: EditorView, from: number, to = from) {\n if (from === to) {\n // Moves to position to be just after the first (and only) selected block.\n to += view.state.doc.resolve(from + 1).node().nodeSize;\n }\n\n // Parent element is cloned to remove all unselected children without affecting the editor content.\n const parentClone = view.domAtPos(from).node.cloneNode(true) as Element;\n const parent = view.domAtPos(from).node as Element;\n\n const getElementIndex = (parentElement: Element, targetElement: Element) =>\n Array.prototype.indexOf.call(parentElement.children, targetElement);\n\n const firstSelectedBlockIndex = getElementIndex(\n parent,\n // Expects from position to be just before the first selected block.\n view.domAtPos(from + 1).node.parentElement!,\n );\n const lastSelectedBlockIndex = getElementIndex(\n parent,\n // Expects to position to be just after the last selected block.\n view.domAtPos(to - 1).node.parentElement!,\n );\n\n for (let i = parent.childElementCount - 1; i >= 0; i--) {\n if (i > lastSelectedBlockIndex || i < firstSelectedBlockIndex) {\n parentClone.removeChild(parentClone.children[i]);\n }\n }\n\n // dataTransfer.setDragImage(element) only works if element is attached to the DOM.\n unsetDragImage(view.root);\n dragImageElement = parentClone;\n\n // Browsers may have CORS policies which prevents iframes from being\n // manipulated, so better to stay on the safe side and remove them from the\n // drag preview. The drag preview doesn't work with embedded documents\n // (iframe/embed/object) anyway, and including an (e.g. a PDF)\n // can prevent the drag from initiating at all.\n const embeddedDocs = dragImageElement.querySelectorAll(\n \"iframe, embed, object\",\n );\n embeddedDocs.forEach((el) => el.parentElement?.removeChild(el));\n\n // TODO: This is hacky, need a better way of assigning classes to the editor so that they can also be applied to the\n // drag preview.\n const classes = view.dom.className.split(\" \");\n const inheritedClasses = classes\n .filter(\n (className) =>\n className !== \"ProseMirror\" &&\n className !== \"bn-root\" &&\n className !== \"bn-editor\",\n )\n .join(\" \");\n\n dragImageElement.className =\n dragImageElement.className + \" bn-drag-preview \" + inheritedClasses;\n\n if (view.root instanceof ShadowRoot) {\n view.root.appendChild(dragImageElement);\n } else {\n view.root.body.appendChild(dragImageElement);\n }\n}\n\nexport function unsetDragImage(rootEl: Document | ShadowRoot) {\n if (dragImageElement !== undefined) {\n if (rootEl instanceof ShadowRoot) {\n rootEl.removeChild(dragImageElement);\n } else {\n rootEl.body.removeChild(dragImageElement);\n }\n\n dragImageElement = undefined;\n }\n}\n\nexport function dragStart<\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n>(\n e: { dataTransfer: DataTransfer | null; clientY: number },\n block: Block,\n editor: BlockNoteEditor,\n) {\n if (!e.dataTransfer) {\n return;\n }\n\n if (editor.headless) {\n return;\n }\n const view = editor.prosemirrorView;\n\n const posInfo = getNodeById(block.id, view.state.doc);\n if (!posInfo) {\n throw new Error(`Block with ID ${block.id} not found`);\n }\n const pos = posInfo.posBeforeNode;\n\n if (pos != null) {\n const selection = view.state.selection;\n const doc = view.state.doc;\n\n const { from, to } = blockPositionsFromSelection(selection, doc);\n\n const draggedBlockInSelection = from <= pos && pos < to;\n const multipleBlocksSelected =\n selection.$anchor.node() !== selection.$head.node() ||\n selection instanceof MultipleNodeSelection;\n\n if (draggedBlockInSelection && multipleBlocksSelected) {\n view.dispatch(\n view.state.tr.setSelection(MultipleNodeSelection.create(doc, from, to)),\n );\n setDragImage(view, from, to);\n } else {\n view.dispatch(\n view.state.tr.setSelection(NodeSelection.create(view.state.doc, pos)),\n );\n setDragImage(view, pos);\n }\n\n const selectedSlice = view.state.selection.content();\n const schema = editor.pmSchema;\n\n const clipboardHTML =\n view.serializeForClipboard(selectedSlice).dom.innerHTML;\n\n const externalHTMLExporter = createExternalHTMLExporter(schema, editor);\n\n const blocks = fragmentToBlocks(selectedSlice.content);\n const externalHTML = externalHTMLExporter.exportBlocks(blocks, {});\n\n const plainText = cleanHTMLToMarkdown(externalHTML);\n\n e.dataTransfer.clearData();\n e.dataTransfer.setData(\"blocknote/html\", clipboardHTML);\n e.dataTransfer.setData(\"text/html\", externalHTML);\n e.dataTransfer.setData(\"text/plain\", plainText);\n e.dataTransfer.effectAllowed = \"move\";\n e.dataTransfer.setDragImage(dragImageElement!, 0, 0);\n }\n}\n","import { DOMParser, Slice } from \"@tiptap/pm/model\";\nimport {\n EditorState,\n Plugin,\n PluginKey,\n PluginView,\n TextSelection,\n} from \"@tiptap/pm/state\";\nimport { EditorView } from \"@tiptap/pm/view\";\n\nimport { Block } from \"../../blocks/defaultBlocks.js\";\nimport type { BlockNoteEditor } from \"../../editor/BlockNoteEditor.js\";\nimport {\n createExtension,\n createStore,\n} from \"../../editor/BlockNoteExtension.js\";\nimport { UiElementPosition } from \"../../extensions-shared/UiElementPosition.js\";\nimport {\n BlockSchema,\n InlineContentSchema,\n StyleSchema,\n} from \"../../schema/index.js\";\nimport { getDraggableBlockFromElement } from \"../getDraggableBlockFromElement.js\";\nimport { dragStart, unsetDragImage } from \"./dragging.js\";\n\nexport type SideMenuState<\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n> = UiElementPosition & {\n // The block that the side menu is attached to.\n block: Block;\n};\n\nconst DISTANCE_TO_CONSIDER_EDITOR_BOUNDS = 250;\n\nfunction getBlockFromCoords(\n view: EditorView,\n coords: { left: number; top: number },\n adjustForColumns = true,\n) {\n const elements = view.root.elementsFromPoint(coords.left, coords.top);\n\n for (const element of elements) {\n if (!view.dom.contains(element)) {\n // probably a ui overlay like formatting toolbar etc\n continue;\n }\n if (adjustForColumns) {\n const column = element.closest(\"[data-node-type=columnList]\");\n if (column) {\n return getBlockFromCoords(\n view,\n {\n // TODO can we do better than this?\n left: coords.left + 50, // bit hacky, but if we're inside a column, offset x position to right to account for the width of sidemenu itself\n top: coords.top,\n },\n false,\n );\n }\n }\n return getDraggableBlockFromElement(element, view);\n }\n return undefined;\n}\n\nfunction getBlockFromMousePos(\n mousePos: {\n x: number;\n y: number;\n },\n view: EditorView,\n): { node: HTMLElement; id: string } | undefined {\n // Editor itself may have padding or other styling which affects\n // size/position, so we get the boundingRect of the first child (i.e. the\n // blockGroup that wraps all blocks in the editor) for more accurate side\n // menu placement.\n if (!view.dom.firstChild) {\n return;\n }\n\n const editorBoundingBox = (\n view.dom.firstChild as HTMLElement\n ).getBoundingClientRect();\n\n // Gets block at mouse cursor's position.\n const coords = {\n // Clamps the x position to the editor's bounding box.\n left: Math.min(\n Math.max(editorBoundingBox.left + 10, mousePos.x),\n editorBoundingBox.right - 10,\n ),\n top: mousePos.y,\n };\n\n const referenceBlock = getBlockFromCoords(view, coords);\n\n if (!referenceBlock) {\n // could not find the reference block\n return undefined;\n }\n\n /**\n * Because blocks may be nested, we need to check the right edge of the parent block:\n * ```\n * | BlockA |\n * x | BlockB y|\n * ```\n * Hovering at position x (left edge of BlockB) would return BlockA.\n * Instead, we check at position y (right edge of BlockA) to correctly identify BlockB.\n */\n const referenceBlocksBoundingBox =\n referenceBlock.node.getBoundingClientRect();\n return getBlockFromCoords(\n view,\n {\n left: referenceBlocksBoundingBox.right - 10,\n top: mousePos.y,\n },\n false,\n );\n}\n\n/**\n * With the sidemenu plugin we can position a menu next to a hovered block.\n */\nexport class SideMenuView<\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n> implements PluginView\n{\n public state?: SideMenuState;\n public readonly emitUpdate: (state: SideMenuState) => void;\n\n private mousePos: { x: number; y: number } | undefined;\n\n private hoveredBlock: HTMLElement | undefined;\n\n public menuFrozen = false;\n\n public isDragOrigin = false;\n\n constructor(\n private readonly editor: BlockNoteEditor,\n private readonly pmView: EditorView,\n emitUpdate: (state: SideMenuState) => void,\n ) {\n this.emitUpdate = () => {\n if (!this.state) {\n throw new Error(\"Attempting to update uninitialized side menu\");\n }\n\n emitUpdate(this.state);\n };\n\n this.pmView.root.addEventListener(\n \"dragstart\",\n this.onDragStart as EventListener,\n );\n this.pmView.root.addEventListener(\n \"dragover\",\n this.onDragOver as EventListener,\n );\n this.pmView.root.addEventListener(\n \"drop\",\n this.onDrop as EventListener,\n true,\n );\n this.pmView.root.addEventListener(\n \"dragend\",\n this.onDragEnd as EventListener,\n true,\n );\n\n // Shows or updates menu position whenever the cursor moves, if the menu isn't frozen.\n this.pmView.root.addEventListener(\n \"mousemove\",\n this.onMouseMove as EventListener,\n true,\n );\n\n // Hides and unfreezes the menu whenever the user presses a key.\n this.pmView.root.addEventListener(\n \"keydown\",\n this.onKeyDown as EventListener,\n true,\n );\n }\n\n updateState = (state: SideMenuState) => {\n this.state = state;\n this.emitUpdate(this.state);\n };\n\n updateStateFromMousePos = () => {\n if (this.menuFrozen || !this.mousePos) {\n return;\n }\n\n const closestEditor = this.findClosestEditorElement({\n clientX: this.mousePos.x,\n clientY: this.mousePos.y,\n });\n\n if (\n closestEditor?.element !== this.pmView.dom ||\n closestEditor.distance > DISTANCE_TO_CONSIDER_EDITOR_BOUNDS\n ) {\n if (this.state?.show) {\n this.state.show = false;\n this.updateState(this.state);\n }\n return;\n }\n\n const block = getBlockFromMousePos(this.mousePos, this.pmView);\n\n // Closes the menu if the mouse cursor is beyond the editor vertically.\n if (!block || !this.editor.isEditable) {\n if (this.state?.show) {\n this.state.show = false;\n this.updateState(this.state);\n }\n\n return;\n }\n\n // Doesn't update if the menu is already open and the mouse cursor is still hovering the same block.\n if (\n this.state?.show &&\n this.hoveredBlock?.hasAttribute(\"data-id\") &&\n this.hoveredBlock?.getAttribute(\"data-id\") === block.id\n ) {\n return;\n }\n\n this.hoveredBlock = block.node;\n\n // Shows or updates elements.\n if (this.editor.isEditable) {\n const blockContentBoundingBox = block.node.getBoundingClientRect();\n const column = block.node.closest(\"[data-node-type=column]\");\n this.state = {\n show: true,\n referencePos: new DOMRect(\n column\n ? // We take the first child as column elements have some default\n // padding. This is a little weird since this child element will\n // be the first block, but since it's always non-nested and we\n // only take the x coordinate, it's ok.\n column.firstElementChild!.getBoundingClientRect().x\n : (\n this.pmView.dom.firstChild as HTMLElement\n ).getBoundingClientRect().x,\n blockContentBoundingBox.y,\n blockContentBoundingBox.width,\n blockContentBoundingBox.height,\n ),\n block: this.editor.getBlock(\n this.hoveredBlock!.getAttribute(\"data-id\")!,\n )!,\n };\n this.updateState(this.state);\n }\n };\n\n /**\n * If a block is being dragged, ProseMirror usually gets the context of what's\n * being dragged from `view.dragging`, which is automatically set when a\n * `dragstart` event fires in the editor. However, if the user tries to drag\n * and drop blocks between multiple editors, only the one in which the drag\n * began has that context, so we need to set it on the others manually. This\n * ensures that PM always drops the blocks in between other blocks, and not\n * inside them.\n *\n * After the `dragstart` event fires on the drag handle, it sets\n * `blocknote/html` data on the clipboard. This handler fires right after,\n * parsing the `blocknote/html` data into nodes and setting them on\n * `view.dragging`.\n *\n * Note: Setting `view.dragging` on `dragover` would be better as the user\n * could then drag between editors in different windows, but you can only\n * access `dataTransfer` contents on `dragstart` and `drop` events.\n */\n onDragStart = (event: DragEvent) => {\n const html = event.dataTransfer?.getData(\"blocknote/html\");\n if (!html) {\n return;\n }\n\n if (this.pmView.dragging) {\n // already dragging, so no-op\n return;\n }\n\n const element = document.createElement(\"div\");\n element.innerHTML = html;\n\n const parser = DOMParser.fromSchema(this.pmView.state.schema);\n const node = parser.parse(element, {\n topNode: this.pmView.state.schema.nodes[\"blockGroup\"].create(),\n });\n\n this.pmView.dragging = {\n slice: new Slice(node.content, 0, 0),\n move: true,\n };\n };\n\n /**\n * Finds the closest editor visually to the given coordinates\n */\n private findClosestEditorElement = (coords: {\n clientX: number;\n clientY: number;\n }) => {\n // Get all editor elements in the document\n const editors = Array.from(this.pmView.root.querySelectorAll(\".bn-editor\"));\n\n if (editors.length === 0) {\n return null;\n }\n\n // Find the editor with the smallest distance to the coordinates\n let closestEditor = editors[0];\n let minDistance = Number.MAX_VALUE;\n\n editors.forEach((editor) => {\n const rect = editor\n .querySelector(\".bn-block-group\")!\n .getBoundingClientRect();\n\n const distanceX =\n coords.clientX < rect.left\n ? rect.left - coords.clientX\n : coords.clientX > rect.right\n ? coords.clientX - rect.right\n : 0;\n\n const distanceY =\n coords.clientY < rect.top\n ? rect.top - coords.clientY\n : coords.clientY > rect.bottom\n ? coords.clientY - rect.bottom\n : 0;\n\n const distance = Math.sqrt(\n Math.pow(distanceX, 2) + Math.pow(distanceY, 2),\n );\n\n if (distance < minDistance) {\n minDistance = distance;\n closestEditor = editor;\n }\n });\n\n return {\n element: closestEditor,\n distance: minDistance,\n };\n };\n\n /**\n * This dragover event handler listens at the document level,\n * and is trying to handle dragover events for all editors.\n *\n * It specifically is trying to handle the following cases:\n * - If the dragover event is within the bounds of any editor, then it does nothing\n * - If the dragover event is outside the bounds of any editor, but close enough (within DISTANCE_TO_CONSIDER_EDITOR_BOUNDS) to the closest editor,\n * then it dispatches a synthetic dragover event to the closest editor (which will trigger the drop-cursor to be shown on that editor)\n * - If the dragover event is outside the bounds of the current editor, then it will dispatch a synthetic dragleave event to the current editor\n * (which will trigger the drop-cursor to be removed from the current editor)\n *\n * The synthetic event is a necessary evil because we do not control prosemirror-dropcursor to be able to show the drop-cursor within the range we want\n */\n onDragOver = (event: DragEvent) => {\n if ((event as any).synthetic) {\n return;\n }\n\n // Relevance gate: Only handle drags that belong to BlockNote\n // This prevents interference with external drag-and-drop libraries\n // by avoiding calls to closeDropCursor() for non-BlockNote drags\n const isBlockNoteDrag =\n this.pmView.dragging !== null ||\n this.isDragOrigin ||\n event.dataTransfer?.types.includes(\"blocknote/html\") ||\n (event.target instanceof Node && this.pmView.dom.contains(event.target));\n\n if (!isBlockNoteDrag) {\n // Not a BlockNote-related drag, return early without any processing\n return;\n }\n\n const dragEventContext = this.getDragEventContext(event);\n\n if (!dragEventContext || !dragEventContext.isDropPoint) {\n // This is not a drag event that we are interested in\n // so, we close the drop-cursor\n this.closeDropCursor();\n return;\n }\n\n if (\n dragEventContext.isDropPoint &&\n !dragEventContext.isDropWithinEditorBounds\n ) {\n // we are the drop point, but the drag over event is not within the bounds of this editor instance\n // so, we need to dispatch an event that is in the bounds of this editor instance\n this.dispatchSyntheticEvent(event);\n }\n };\n\n /**\n * Closes the drop-cursor for the current editor\n */\n private closeDropCursor = () => {\n const evt = new Event(\"dragleave\", { bubbles: false });\n // It needs to be synthetic, so we don't accidentally think it is a real dragend event\n (evt as any).synthetic = true;\n // We dispatch the event to the current editor, so that the drop-cursor is removed for it\n this.pmView.dom.dispatchEvent(evt);\n };\n\n /**\n * It is surprisingly difficult to determine the information we need to know about a drag event\n *\n * This function is trying to determine the following:\n * - Whether the current editor instance is the drop point\n * - Whether the current editor instance is the drag origin\n * - Whether the drop event is within the bounds of the current editor instance\n */\n getDragEventContext = (event: DragEvent) => {\n // Relevance gate: Only handle drags that belong to BlockNote\n // Check if at least one of the following is true:\n // 1. ProseMirror drag started in an editor\n // 2. Side menu drag\n // 3. BlockNote-specific data type in the drag\n // 4. (optional stricter mode) Event target is inside this editor\n const isBlockNoteDrag =\n this.pmView.dragging !== null ||\n this.isDragOrigin ||\n event.dataTransfer?.types.includes(\"blocknote/html\") ||\n (event.target instanceof Node && this.pmView.dom.contains(event.target));\n\n if (!isBlockNoteDrag) {\n // Not a BlockNote-related drag, return early\n return undefined;\n }\n\n // We need to check if there is text content that is being dragged (select some text & just drag it)\n const textContentIsBeingDragged =\n !event.dataTransfer?.types.includes(\"blocknote/html\") &&\n !!this.pmView.dragging;\n // This is the side menu drag from this plugin\n const sideMenuIsBeingDragged = !!this.isDragOrigin;\n // Tells us that the current editor instance has a drag ongoing (either text or side menu)\n const isDragOrigin = textContentIsBeingDragged || sideMenuIsBeingDragged;\n\n // Tells us which editor instance is the closest to the drag event (whether or not it is actually reasonably close)\n const closestEditor = this.findClosestEditorElement(event);\n\n // We arbitrarily decide how far is \"too far\" from the closest editor to be considered a drop point\n if (\n !closestEditor ||\n closestEditor.distance > DISTANCE_TO_CONSIDER_EDITOR_BOUNDS\n ) {\n // we are too far from the closest editor, or no editor was found\n return undefined;\n }\n\n // We check if the closest editor is the same as the current editor instance (which is the drop point)\n const isDropPoint = closestEditor.element === this.pmView.dom;\n // We check if the current editor instance is the same as the editor instance that the drag event is happening within\n const isDropWithinEditorBounds =\n isDropPoint && closestEditor.distance === 0;\n\n // We never want to handle drop events that are not related to us\n if (!isDropPoint && !isDragOrigin) {\n // we are not the drop point or drag origin, so not relevant to us\n return undefined;\n }\n\n return {\n isDropPoint,\n isDropWithinEditorBounds,\n isDragOrigin,\n };\n };\n\n /**\n * The drop event handler listens at the document level,\n * and handles drop events for all editors.\n *\n * It specifically handles the following cases:\n * - If we are both the drag origin and drop point:\n * - Let normal drop handling take over\n * - If we are the drop point but not the drag origin:\n * - Collapse selection to prevent PM from deleting unrelated content\n * - If drop event is outside our editor bounds, dispatch synthetic drop event to our editor\n * - If we are the drag origin but not the drop point:\n * - Delete the dragged content from our editor after a delay\n */\n onDrop = (event: DragEvent) => {\n if ((event as any).synthetic) {\n return;\n }\n\n // Relevance gate: Only handle drags that belong to BlockNote\n // This prevents interference with external drag-and-drop libraries\n const isBlockNoteDrag =\n this.pmView.dragging !== null ||\n this.isDragOrigin ||\n event.dataTransfer?.types.includes(\"blocknote/html\") ||\n (event.target instanceof Node && this.pmView.dom.contains(event.target));\n\n if (!isBlockNoteDrag) {\n // Not a BlockNote-related drag, return early without any processing\n return;\n }\n\n const context = this.getDragEventContext(event);\n if (!context) {\n this.closeDropCursor();\n // This is not a drag event that we are interested in\n return;\n }\n const { isDropPoint, isDropWithinEditorBounds, isDragOrigin } = context;\n\n if (!isDropWithinEditorBounds && isDropPoint) {\n // Any time that the drop event is outside of the editor bounds (but still close to an editor instance)\n // We dispatch a synthetic event that is in the bounds of the editor instance, to have the correct drop point\n this.dispatchSyntheticEvent(event);\n }\n\n if (isDropPoint) {\n // The current instance is the drop point\n\n if (this.pmView.dragging) {\n // Do not collapse selection when text content is being dragged\n return;\n }\n // Because the editor selection is unrelated to the dragged content, we\n // don't want PM to delete its content. Therefore, we collapse the\n // selection.\n this.pmView.dispatch(\n this.pmView.state.tr.setSelection(\n TextSelection.create(\n this.pmView.state.tr.doc,\n this.pmView.state.tr.selection.anchor,\n ),\n ),\n );\n return;\n } else if (isDragOrigin) {\n // The current instance is the drag origin, but not the drop point\n // our content got dropped somewhere else\n\n // Because the editor from which the block originates doesn't get a drop\n // event on it, PM doesn't delete its selected content. Therefore, we\n // need to do so manually.\n //\n // Note: Deleting the selected content from the editor from which the\n // block originates, may change its height. This can cause the position of\n // the editor in which the block is being dropping to shift, before it\n // can handle the drop event. That in turn can cause the drop to happen\n // somewhere other than the user intended. To get around this, we delay\n // deleting the selected content until all editors have had the chance to\n // handle the event.\n setTimeout(\n () => this.pmView.dispatch(this.pmView.state.tr.deleteSelection()),\n 0,\n );\n return;\n }\n };\n\n onDragEnd = (event: DragEvent) => {\n if ((event as any).synthetic) {\n return;\n }\n // When the user starts dragging a block, `view.dragging` is set on all\n // BlockNote editors. However, when the drag ends, only the editor that the\n // drag originated in automatically clears `view.dragging`. Therefore, we\n // have to manually clear it on all editors.\n this.pmView.dragging = null;\n };\n\n onKeyDown = (_event: KeyboardEvent) => {\n if (this.state?.show && this.editor.isFocused()) {\n // Typing in editor should hide side menu\n this.state.show = false;\n this.emitUpdate(this.state);\n }\n };\n\n onMouseMove = (event: MouseEvent) => {\n if (this.menuFrozen) {\n return;\n }\n\n this.mousePos = { x: event.clientX, y: event.clientY };\n\n // We want the full area of the editor to check if the cursor is hovering\n // above it though.\n const editorOuterBoundingBox = this.pmView.dom.getBoundingClientRect();\n const cursorWithinEditor =\n this.mousePos.x > editorOuterBoundingBox.left &&\n this.mousePos.x < editorOuterBoundingBox.right &&\n this.mousePos.y > editorOuterBoundingBox.top &&\n this.mousePos.y < editorOuterBoundingBox.bottom;\n\n // Doesn't update if the mouse hovers an element that's over the editor but\n // isn't a part of it or the side menu.\n if (\n // Cursor is within the editor area\n cursorWithinEditor &&\n // An element is hovered\n event &&\n event.target &&\n // Element is outside this editor and its portaled UI\n !this.editor.isWithinEditor(event.target as HTMLElement)\n ) {\n if (this.state?.show) {\n this.state.show = false;\n this.emitUpdate(this.state);\n }\n\n return;\n }\n\n this.updateStateFromMousePos();\n };\n\n private dispatchSyntheticEvent(event: DragEvent) {\n const evt = new Event(event.type as \"dragover\", event) as any;\n const dropPointBoundingBox = (\n this.pmView.dom.firstChild as HTMLElement\n ).getBoundingClientRect();\n evt.clientX = event.clientX;\n evt.clientY = event.clientY;\n\n evt.clientX = Math.min(\n Math.max(event.clientX, dropPointBoundingBox.left),\n dropPointBoundingBox.left + dropPointBoundingBox.width,\n );\n evt.clientY = Math.min(\n Math.max(event.clientY, dropPointBoundingBox.top),\n dropPointBoundingBox.top + dropPointBoundingBox.height,\n );\n\n evt.dataTransfer = event.dataTransfer;\n evt.preventDefault = () => event.preventDefault();\n evt.synthetic = true; // prevent recursion\n this.pmView.dom.dispatchEvent(evt);\n }\n\n // Needed in cases where the editor state updates without the mouse cursor\n // moving, as some state updates can require a side menu update. For example,\n // adding a button to the side menu which removes the block can cause the\n // block below to jump up into the place of the removed block when clicked,\n // allowing the user to click the button again without moving the cursor. This\n // would otherwise not update the side menu, and so clicking the button again\n // would attempt to remove the same block again, causing an error.\n update(_view: EditorView, prevState: EditorState) {\n const docChanged = !prevState.doc.eq(this.pmView.state.doc);\n if (docChanged && this.state?.show) {\n this.updateStateFromMousePos();\n }\n }\n\n destroy() {\n if (this.state?.show) {\n this.state.show = false;\n this.emitUpdate(this.state);\n }\n this.pmView.root.removeEventListener(\n \"mousemove\",\n this.onMouseMove as EventListener,\n true,\n );\n this.pmView.root.removeEventListener(\n \"dragstart\",\n this.onDragStart as EventListener,\n );\n this.pmView.root.removeEventListener(\n \"dragover\",\n this.onDragOver as EventListener,\n );\n this.pmView.root.removeEventListener(\n \"drop\",\n this.onDrop as EventListener,\n true,\n );\n this.pmView.root.removeEventListener(\n \"dragend\",\n this.onDragEnd as EventListener,\n true,\n );\n this.pmView.root.removeEventListener(\n \"keydown\",\n this.onKeyDown as EventListener,\n true,\n );\n }\n}\n\nexport const sideMenuPluginKey = new PluginKey(\"SideMenuPlugin\");\n\nexport const SideMenuExtension = createExtension(({ editor }) => {\n let view: SideMenuView | undefined;\n const store = createStore | undefined>(\n undefined,\n );\n\n return {\n key: \"sideMenu\",\n store,\n prosemirrorPlugins: [\n new Plugin({\n key: sideMenuPluginKey,\n view: (editorView) => {\n view = new SideMenuView(editor, editorView, (state) => {\n // TODO: Without spreading the state, in some cases like toggling\n // `show`, this doesn't trigger an update.\n store.setState({ ...state });\n });\n return view;\n },\n }),\n ],\n\n /**\n * Handles drag & drop events for blocks.\n */\n blockDragStart(\n event: { dataTransfer: DataTransfer | null; clientY: number },\n block: Block,\n ) {\n if (view) {\n view.isDragOrigin = true;\n }\n dragStart(event, block, editor);\n },\n\n /**\n * Handles drag & drop events for blocks.\n */\n blockDragEnd() {\n unsetDragImage(editor.prosemirrorView.root);\n if (view) {\n view.isDragOrigin = false;\n }\n\n editor.blur();\n },\n\n /**\n * Freezes the side menu. When frozen, the side menu will stay\n * attached to the same block regardless of which block is hovered by the\n * mouse cursor.\n */\n freezeMenu() {\n view!.menuFrozen = true;\n view!.state!.show = true;\n view!.emitUpdate(view!.state!);\n },\n\n /**\n * Unfreezes the side menu. When frozen, the side menu will stay\n * attached to the same block regardless of which block is hovered by the\n * mouse cursor.\n */\n unfreezeMenu() {\n view!.menuFrozen = false;\n view!.state!.show = false;\n view!.emitUpdate(view!.state!);\n },\n\n /**\n * Hides the side menu unless it is currently frozen (e.g. the drag\n * handle menu is open). Used to dismiss the menu on scroll without\n * interfering with open submenus.\n */\n hideMenuIfNotFrozen() {\n if (!view!.menuFrozen && view!.state?.show) {\n view!.state.show = false;\n view!.emitUpdate(view!.state!);\n }\n },\n } as const;\n});\n","import type { Emoji, EmojiMartData } from \"@emoji-mart/data\";\n\nimport { defaultInlineContentSchema } from \"../../blocks/defaultBlocks.js\";\nimport { BlockNoteEditor } from \"../../editor/BlockNoteEditor.js\";\nimport {\n BlockSchema,\n InlineContentSchema,\n StyleSchema,\n} from \"../../schema/index.js\";\nimport { DefaultGridSuggestionItem } from \"./DefaultGridSuggestionItem.js\";\n\n// Temporary fix for https://github.com/missive/emoji-mart/pull/929\nlet emojiLoadingPromise:\n | Promise<{\n emojiMart: typeof import(\"emoji-mart\");\n emojiData: EmojiMartData;\n }>\n | undefined;\n\nasync function loadEmojiMart() {\n if (emojiLoadingPromise) {\n return emojiLoadingPromise;\n }\n\n emojiLoadingPromise = (async () => {\n // load dynamically because emoji-mart doesn't specify type: module and breaks in nodejs\n const [emojiMartModule, emojiDataModule] = await Promise.all([\n import(\"emoji-mart\"),\n // use a dynamic import to encourage bundle-splitting\n // and a smaller initial client bundle size\n import(\"@emoji-mart/data\"),\n ]);\n\n const emojiMart =\n \"default\" in emojiMartModule ? emojiMartModule.default : emojiMartModule;\n const emojiData =\n \"default\" in emojiDataModule\n ? (emojiDataModule.default as EmojiMartData)\n : (emojiDataModule as EmojiMartData);\n\n await emojiMart.init({ data: emojiData });\n\n return { emojiMart, emojiData };\n })();\n\n return emojiLoadingPromise;\n}\n\nexport async function getDefaultEmojiPickerItems<\n BSchema extends BlockSchema,\n I extends InlineContentSchema,\n S extends StyleSchema,\n>(\n editor: BlockNoteEditor,\n query: string,\n): Promise {\n if (\n !(\"text\" in editor.schema.inlineContentSchema) ||\n editor.schema.inlineContentSchema[\"text\"] !==\n defaultInlineContentSchema[\"text\"]\n ) {\n return [];\n }\n\n const { emojiData, emojiMart } = await loadEmojiMart();\n\n const emojisToShow =\n query.trim() === \"\"\n ? Object.values(emojiData.emojis)\n : ((await emojiMart!.SearchIndex.search(query)) as Emoji[]);\n\n return emojisToShow.map((emoji) => ({\n id: emoji.skins[0].native,\n onItemClick: () => editor.insertInlineContent(emoji.skins[0].native + \" \"),\n }));\n}\n","import { EditorState, Plugin, PluginKey, PluginView } from \"prosemirror-state\";\nimport {\n CellSelection,\n addColumnAfter,\n addColumnBefore,\n addRowAfter,\n addRowBefore,\n deleteColumn,\n deleteRow,\n mergeCells,\n splitCell,\n} from \"prosemirror-tables\";\nimport { Decoration, DecorationSet, EditorView } from \"prosemirror-view\";\nimport {\n RelativeCellIndices,\n addRowsOrColumns,\n areInSameColumn,\n canColumnBeDraggedInto,\n canRowBeDraggedInto,\n cropEmptyRowsOrColumns,\n getCellsAtColumnHandle,\n getCellsAtRowHandle,\n getDimensionsOfTable,\n moveColumn,\n moveRow,\n} from \"../../api/blockManipulation/tables/tables.js\";\nimport { nodeToBlock } from \"../../api/nodeConversions/nodeToBlock.js\";\nimport { getNodeById } from \"../../api/nodeUtil.js\";\nimport {\n editorHasBlockWithType,\n isTableCellSelection,\n} from \"../../blocks/defaultBlockTypeGuards.js\";\nimport { DefaultBlockSchema } from \"../../blocks/defaultBlocks.js\";\nimport type { BlockNoteEditor } from \"../../editor/BlockNoteEditor.js\";\nimport {\n createExtension,\n createStore,\n} from \"../../editor/BlockNoteExtension.js\";\nimport {\n BlockFromConfigNoChildren,\n BlockSchemaWithBlock,\n} from \"../../schema/index.js\";\nimport { getDraggableBlockFromElement } from \"../getDraggableBlockFromElement.js\";\n\nlet dragImageElement: HTMLElement | undefined;\n\n// TODO consider switching this to jotai, it is a bit messy and noisy\nexport type TableHandlesState = {\n show: boolean;\n showAddOrRemoveRowsButton: boolean;\n showAddOrRemoveColumnsButton: boolean;\n referencePosCell: DOMRect | undefined;\n referencePosTable: DOMRect;\n\n block: BlockFromConfigNoChildren;\n colIndex: number | undefined;\n rowIndex: number | undefined;\n\n draggingState:\n | {\n draggedCellOrientation: \"row\" | \"col\";\n originalIndex: number;\n mousePos: number;\n }\n | undefined;\n\n widgetContainer: HTMLElement | undefined;\n};\n\nfunction setHiddenDragImage(rootEl: Document | ShadowRoot) {\n if (dragImageElement) {\n return;\n }\n\n dragImageElement = document.createElement(\"div\");\n dragImageElement.innerHTML = \"_\";\n dragImageElement.style.opacity = \"0\";\n dragImageElement.style.height = \"1px\";\n dragImageElement.style.width = \"1px\";\n if (rootEl instanceof Document) {\n rootEl.body.appendChild(dragImageElement);\n } else {\n rootEl.appendChild(dragImageElement);\n }\n}\n\nfunction unsetHiddenDragImage(rootEl: Document | ShadowRoot) {\n if (dragImageElement) {\n if (rootEl instanceof Document) {\n rootEl.body.removeChild(dragImageElement);\n } else {\n rootEl.removeChild(dragImageElement);\n }\n dragImageElement = undefined;\n }\n}\n\nfunction getChildIndex(node: Element) {\n return Array.prototype.indexOf.call(node.parentElement!.childNodes, node);\n}\n\n// Finds the DOM element corresponding to the table cell that the target element\n// is currently in. If the target element is not in a table cell, returns null.\nfunction domCellAround(target: Element) {\n let currentTarget: Element | undefined = target;\n while (\n currentTarget &&\n currentTarget.nodeName !== \"TD\" &&\n currentTarget.nodeName !== \"TH\" &&\n !currentTarget.classList.contains(\"tableWrapper\")\n ) {\n if (currentTarget.classList.contains(\"ProseMirror\")) {\n return undefined;\n }\n const parent: ParentNode | null = currentTarget.parentNode;\n\n if (!parent || !(parent instanceof Element)) {\n return undefined;\n }\n currentTarget = parent;\n }\n\n return currentTarget.nodeName === \"TD\" || currentTarget.nodeName === \"TH\"\n ? {\n type: \"cell\",\n domNode: currentTarget,\n tbodyNode: currentTarget.closest(\"tbody\"),\n }\n : {\n type: \"wrapper\",\n domNode: currentTarget,\n tbodyNode: currentTarget.querySelector(\"tbody\"),\n };\n}\n\n// Hides elements in the DOMwith the provided class names.\nfunction hideElements(selector: string, rootEl: Document | ShadowRoot) {\n const elementsToHide = rootEl.querySelectorAll(selector);\n\n for (let i = 0; i < elementsToHide.length; i++) {\n (elementsToHide[i] as HTMLElement).style.visibility = \"hidden\";\n }\n}\n\nexport class TableHandlesView implements PluginView {\n public state?: TableHandlesState;\n public emitUpdate: () => void;\n\n public tableId: string | undefined;\n public tablePos: number | undefined;\n public tableElement: HTMLElement | undefined;\n\n public menuFrozen = false;\n\n public mouseState: \"up\" | \"down\" | \"selecting\" = \"up\";\n\n public prevWasEditable: boolean | null = null;\n\n constructor(\n private readonly editor: BlockNoteEditor<\n BlockSchemaWithBlock<\"table\", DefaultBlockSchema[\"table\"]>,\n any,\n any\n >,\n private readonly pmView: EditorView,\n emitUpdate: (state: TableHandlesState) => void,\n ) {\n this.emitUpdate = () => {\n if (!this.state) {\n throw new Error(\"Attempting to update uninitialized image toolbar\");\n }\n\n emitUpdate(this.state);\n };\n\n pmView.dom.addEventListener(\"mousemove\", this.mouseMoveHandler);\n pmView.dom.addEventListener(\"mousedown\", this.viewMousedownHandler);\n window.addEventListener(\"mouseup\", this.mouseUpHandler);\n\n pmView.root.addEventListener(\n \"dragover\",\n this.dragOverHandler as EventListener,\n );\n pmView.root.addEventListener(\n \"drop\",\n this.dropHandler as unknown as EventListener,\n );\n }\n\n viewMousedownHandler = () => {\n this.mouseState = \"down\";\n };\n\n mouseUpHandler = (event: MouseEvent) => {\n this.mouseState = \"up\";\n this.mouseMoveHandler(event);\n };\n\n mouseMoveHandler = (event: MouseEvent) => {\n if (this.menuFrozen) {\n return;\n }\n\n if (this.mouseState === \"selecting\") {\n return;\n }\n\n if (\n !(event.target instanceof Element) ||\n !this.pmView.dom.contains(event.target)\n ) {\n return;\n }\n\n const target = domCellAround(event.target);\n\n if (\n target?.type === \"cell\" &&\n this.mouseState === \"down\" &&\n !this.state?.draggingState\n ) {\n // hide draghandles when selecting text as they could be in the way of the user\n this.mouseState = \"selecting\";\n\n if (this.state?.show) {\n this.state.show = false;\n this.state.showAddOrRemoveRowsButton = false;\n this.state.showAddOrRemoveColumnsButton = false;\n this.emitUpdate();\n }\n return;\n }\n\n if (!target || !this.editor.isEditable) {\n if (this.state?.show) {\n this.state.show = false;\n this.state.showAddOrRemoveRowsButton = false;\n this.state.showAddOrRemoveColumnsButton = false;\n this.emitUpdate();\n }\n return;\n }\n\n if (!target.tbodyNode) {\n return;\n }\n\n const tableRect = target.tbodyNode.getBoundingClientRect();\n\n const blockEl = getDraggableBlockFromElement(target.domNode, this.pmView);\n if (!blockEl) {\n return;\n }\n this.tableElement = blockEl.node;\n\n let tableBlock:\n | BlockFromConfigNoChildren\n | undefined;\n\n const pmNodeInfo = this.editor.transact((tr) =>\n getNodeById(blockEl.id, tr.doc),\n );\n if (!pmNodeInfo) {\n throw new Error(`Block with ID ${blockEl.id} not found`);\n }\n\n const block = nodeToBlock(\n pmNodeInfo.node,\n this.editor.pmSchema,\n this.editor.schema.blockSchema,\n this.editor.schema.inlineContentSchema,\n this.editor.schema.styleSchema,\n );\n\n if (editorHasBlockWithType(this.editor, \"table\")) {\n this.tablePos = pmNodeInfo.posBeforeNode + 1;\n tableBlock = block;\n }\n\n if (!tableBlock) {\n return;\n }\n\n this.tableId = blockEl.id;\n const widgetContainer = target.domNode\n .closest(\".tableWrapper\")\n ?.querySelector(\".table-widgets-container\") as HTMLElement;\n\n if (target?.type === \"wrapper\") {\n // if we're just to the right or below the table, show the extend buttons\n // (this is a bit hacky. It would probably be cleaner to render the extend buttons in the Table NodeView instead)\n const belowTable =\n event.clientY >= tableRect.bottom - 1 && // -1 to account for fractions of pixels in \"bottom\"\n event.clientY < tableRect.bottom + 20;\n const toRightOfTable =\n event.clientX >= tableRect.right - 1 &&\n event.clientX < tableRect.right + 20;\n\n const hideHandles =\n // always hide handles when the actively hovered table changed\n this.state?.block.id !== tableBlock.id ||\n // make sure we don't hide existing handles (keep col / row index) when\n // we're hovering just above or to the right of a table\n event.clientX > tableRect.right ||\n event.clientY > tableRect.bottom;\n\n this.state = {\n ...this.state!,\n show: true,\n showAddOrRemoveRowsButton: belowTable,\n showAddOrRemoveColumnsButton: toRightOfTable,\n referencePosTable: tableRect,\n block: tableBlock,\n widgetContainer,\n colIndex: hideHandles ? undefined : this.state?.colIndex,\n rowIndex: hideHandles ? undefined : this.state?.rowIndex,\n referencePosCell: hideHandles\n ? undefined\n : this.state?.referencePosCell,\n };\n } else {\n const colIndex = getChildIndex(target.domNode);\n const rowIndex = getChildIndex(target.domNode.parentElement!);\n const cellRect = target.domNode.getBoundingClientRect();\n\n if (\n this.state !== undefined &&\n this.state.show &&\n this.tableId === blockEl.id &&\n this.state.rowIndex === rowIndex &&\n this.state.colIndex === colIndex\n ) {\n // no update needed\n return;\n }\n\n this.state = {\n show: true,\n showAddOrRemoveColumnsButton:\n colIndex === tableBlock.content.rows[0].cells.length - 1,\n showAddOrRemoveRowsButton:\n rowIndex === tableBlock.content.rows.length - 1,\n referencePosTable: tableRect,\n\n block: tableBlock,\n draggingState: undefined,\n referencePosCell: cellRect,\n colIndex: colIndex,\n rowIndex: rowIndex,\n\n widgetContainer,\n };\n }\n this.emitUpdate();\n\n return false;\n };\n\n dragOverHandler = (event: DragEvent) => {\n if (this.state?.draggingState === undefined) {\n return;\n }\n\n event.preventDefault();\n event.dataTransfer!.dropEffect = \"move\";\n\n hideElements(\n \".prosemirror-dropcursor-block, .prosemirror-dropcursor-inline\",\n this.pmView.root,\n );\n\n // The mouse cursor coordinates, bounded to the table's bounding box. The\n // bounding box is shrunk by 1px on each side to ensure that the bounded\n // coordinates are always inside a table cell.\n const boundedMouseCoords = {\n left: Math.min(\n Math.max(event.clientX, this.state.referencePosTable.left + 1),\n this.state.referencePosTable.right - 1,\n ),\n top: Math.min(\n Math.max(event.clientY, this.state.referencePosTable.top + 1),\n this.state.referencePosTable.bottom - 1,\n ),\n };\n\n // Gets the table cell element that the bounded mouse cursor coordinates lie\n // in.\n const tableCellElements = this.pmView.root\n .elementsFromPoint(boundedMouseCoords.left, boundedMouseCoords.top)\n .filter(\n (element) => element.tagName === \"TD\" || element.tagName === \"TH\",\n );\n if (tableCellElements.length === 0) {\n return;\n }\n const tableCellElement = tableCellElements[0];\n\n let emitStateUpdate = false;\n\n // Gets current row and column index.\n const rowIndex = getChildIndex(tableCellElement.parentElement!);\n const colIndex = getChildIndex(tableCellElement);\n\n // Checks if the drop cursor needs to be updated. This affects decorations\n // only so it doesn't trigger a state update.\n const oldIndex =\n this.state.draggingState.draggedCellOrientation === \"row\"\n ? this.state.rowIndex\n : this.state.colIndex;\n const newIndex =\n this.state.draggingState.draggedCellOrientation === \"row\"\n ? rowIndex\n : colIndex;\n const dispatchDecorationsTransaction = newIndex !== oldIndex;\n\n // Checks if either the hovered cell has changed and updates the row and\n // column index. Also updates the reference DOMRect.\n if (this.state.rowIndex !== rowIndex || this.state.colIndex !== colIndex) {\n this.state.rowIndex = rowIndex;\n this.state.colIndex = colIndex;\n\n this.state.referencePosCell = tableCellElement.getBoundingClientRect();\n\n emitStateUpdate = true;\n }\n\n // Checks if the mouse cursor position along the axis that the user is\n // dragging on has changed and updates it.\n const mousePos =\n this.state.draggingState.draggedCellOrientation === \"row\"\n ? boundedMouseCoords.top\n : boundedMouseCoords.left;\n if (this.state.draggingState.mousePos !== mousePos) {\n this.state.draggingState.mousePos = mousePos;\n\n emitStateUpdate = true;\n }\n\n // Emits a state update if any of the fields have changed.\n if (emitStateUpdate) {\n this.emitUpdate();\n }\n\n // Dispatches a dummy transaction to force a decorations update if\n // necessary.\n if (dispatchDecorationsTransaction) {\n this.editor.transact((tr) => tr.setMeta(tableHandlesPluginKey, true));\n }\n };\n\n dropHandler = (event: DragEvent) => {\n this.mouseState = \"up\";\n if (this.state === undefined || this.state.draggingState === undefined) {\n return false;\n }\n\n if (\n this.state.rowIndex === undefined ||\n this.state.colIndex === undefined\n ) {\n throw new Error(\n \"Attempted to drop table row or column, but no table block was hovered prior.\",\n );\n }\n\n event.preventDefault();\n\n const { draggingState, colIndex, rowIndex } = this.state;\n // Clear so a re-dispatched drop short-circuits above (issue #2691).\n this.state.draggingState = undefined;\n\n const columnWidths = this.state.block.content.columnWidths;\n\n if (draggingState.draggedCellOrientation === \"row\") {\n if (\n !canRowBeDraggedInto(\n this.state.block,\n draggingState.originalIndex,\n rowIndex,\n )\n ) {\n // If the target row is invalid, don't move the row\n return false;\n }\n const newTable = moveRow(\n this.state.block,\n draggingState.originalIndex,\n rowIndex,\n );\n this.editor.updateBlock(this.state.block, {\n type: \"table\",\n content: {\n ...this.state.block.content,\n rows: newTable as any,\n },\n });\n } else {\n if (\n !canColumnBeDraggedInto(\n this.state.block,\n draggingState.originalIndex,\n colIndex,\n )\n ) {\n // If the target column is invalid, don't move the column\n return false;\n }\n const newTable = moveColumn(\n this.state.block,\n draggingState.originalIndex,\n colIndex,\n );\n const [columnWidth] = columnWidths.splice(draggingState.originalIndex, 1);\n columnWidths.splice(colIndex, 0, columnWidth);\n this.editor.updateBlock(this.state.block, {\n type: \"table\",\n content: {\n ...this.state.block.content,\n columnWidths,\n rows: newTable as any,\n },\n });\n }\n\n // Have to reset text cursor position to the block as `updateBlock` moves\n // the existing selection out of the block.\n this.editor.setTextCursorPosition(this.state.block.id);\n\n return true;\n };\n // Updates drag handles when the table is modified or removed.\n update() {\n if (!this.state || !this.state.show) {\n return;\n }\n\n // Hide handles if the table block has been removed.\n this.state.block = this.editor.getBlock(this.state.block.id)!;\n if (\n !this.state.block ||\n this.state.block.type !== \"table\" ||\n // when collaborating, the table element might be replaced and out of date\n // because yjs replaces the element when for example you change the color via the side menu\n !this.tableElement?.isConnected\n ) {\n this.state.show = false;\n this.state.showAddOrRemoveRowsButton = false;\n this.state.showAddOrRemoveColumnsButton = false;\n this.emitUpdate();\n\n return;\n }\n\n const { height: rowCount, width: colCount } = getDimensionsOfTable(\n this.state.block,\n );\n\n if (\n this.state.rowIndex !== undefined &&\n this.state.colIndex !== undefined\n ) {\n // If rows or columns are deleted in the update, the hovered indices for\n // those may now be out of bounds. If this is the case, they are moved to\n // the new last row or column.\n if (this.state.rowIndex >= rowCount) {\n this.state.rowIndex = rowCount - 1;\n }\n if (this.state.colIndex >= colCount) {\n this.state.colIndex = colCount - 1;\n }\n }\n\n // Update bounding boxes.\n const tableBody = this.tableElement!.querySelector(\"tbody\");\n\n if (!tableBody) {\n throw new Error(\n \"Table block does not contain a 'tbody' HTML element. This should never happen.\",\n );\n }\n\n if (\n this.state.rowIndex !== undefined &&\n this.state.colIndex !== undefined\n ) {\n const row = tableBody.children[this.state.rowIndex];\n const cell = row.children[this.state.colIndex];\n if (cell) {\n this.state.referencePosCell = cell.getBoundingClientRect();\n } else {\n this.state.rowIndex = undefined;\n this.state.colIndex = undefined;\n }\n }\n this.state.referencePosTable = tableBody.getBoundingClientRect();\n\n this.emitUpdate();\n }\n\n destroy() {\n this.pmView.dom.removeEventListener(\"mousemove\", this.mouseMoveHandler);\n window.removeEventListener(\"mouseup\", this.mouseUpHandler);\n this.pmView.dom.removeEventListener(\"mousedown\", this.viewMousedownHandler);\n this.pmView.root.removeEventListener(\n \"dragover\",\n this.dragOverHandler as EventListener,\n );\n this.pmView.root.removeEventListener(\n \"drop\",\n this.dropHandler as unknown as EventListener,\n );\n }\n}\n\nexport const tableHandlesPluginKey = new PluginKey(\"TableHandlesPlugin\");\n\nexport const TableHandlesExtension = createExtension(({ editor }) => {\n let view: TableHandlesView | undefined = undefined;\n\n const store = createStore(undefined);\n\n return {\n key: \"tableHandles\",\n store,\n prosemirrorPlugins: [\n new Plugin({\n key: tableHandlesPluginKey,\n view: (editorView) => {\n view = new TableHandlesView(editor as any, editorView, (state) => {\n store.setState(\n state.block\n ? {\n ...state,\n draggingState: state.draggingState\n ? { ...state.draggingState }\n : undefined,\n }\n : undefined,\n );\n });\n return view;\n },\n // We use decorations to render the drop cursor when dragging a table row\n // or column. The decorations are updated in the `dragOverHandler` method.\n props: {\n decorations: (state) => {\n if (\n view === undefined ||\n view.state === undefined ||\n view.state.draggingState === undefined ||\n view.tablePos === undefined\n ) {\n return;\n }\n\n const newIndex =\n view.state.draggingState.draggedCellOrientation === \"row\"\n ? view.state.rowIndex\n : view.state.colIndex;\n\n if (newIndex === undefined) {\n return;\n }\n\n const decorations: Decoration[] = [];\n const { block, draggingState } = view.state;\n const { originalIndex, draggedCellOrientation } = draggingState;\n\n // Return empty decorations if:\n // - Dragging to same position\n // - No block exists\n // - Row drag not allowed\n // - Column drag not allowed\n if (\n newIndex === originalIndex ||\n !block ||\n (draggedCellOrientation === \"row\" &&\n !canRowBeDraggedInto(block, originalIndex, newIndex)) ||\n (draggedCellOrientation === \"col\" &&\n !canColumnBeDraggedInto(block, originalIndex, newIndex))\n ) {\n return DecorationSet.create(state.doc, decorations);\n }\n\n // Gets the table to show the drop cursor in.\n const tableResolvedPos = state.doc.resolve(view.tablePos + 1);\n\n if (view.state.draggingState.draggedCellOrientation === \"row\") {\n const cellsInRow = getCellsAtRowHandle(\n view.state.block,\n newIndex,\n );\n\n cellsInRow.forEach(({ row, col }) => {\n // Gets each row in the table.\n const rowResolvedPos = state.doc.resolve(\n tableResolvedPos.posAtIndex(row) + 1,\n );\n\n // Gets the cell within the row.\n const cellResolvedPos = state.doc.resolve(\n rowResolvedPos.posAtIndex(col) + 1,\n );\n const cellNode = cellResolvedPos.node();\n // Creates a decoration at the start or end of each cell,\n // depending on whether the new index is before or after the\n // original index.\n const decorationPos =\n cellResolvedPos.pos +\n (newIndex > originalIndex ? cellNode.nodeSize - 2 : 0);\n decorations.push(\n // The widget is a small bar which spans the width of the cell.\n Decoration.widget(decorationPos, () => {\n const widget = document.createElement(\"div\");\n widget.className = \"bn-table-drop-cursor\";\n widget.style.left = \"0\";\n widget.style.right = \"0\";\n // This is only necessary because the drop indicator's height\n // is an even number of pixels, whereas the border between\n // table cells is an odd number of pixels. So this makes the\n // positioning slightly more consistent regardless of where\n // the row is being dropped.\n if (newIndex > originalIndex) {\n widget.style.bottom = \"-2px\";\n } else {\n widget.style.top = \"-3px\";\n }\n widget.style.height = \"4px\";\n\n return widget;\n }),\n );\n });\n } else {\n const cellsInColumn = getCellsAtColumnHandle(\n view.state.block,\n newIndex,\n );\n\n cellsInColumn.forEach(({ row, col }) => {\n // Gets each row in the table.\n const rowResolvedPos = state.doc.resolve(\n tableResolvedPos.posAtIndex(row) + 1,\n );\n\n // Gets the cell within the row.\n const cellResolvedPos = state.doc.resolve(\n rowResolvedPos.posAtIndex(col) + 1,\n );\n const cellNode = cellResolvedPos.node();\n\n // Creates a decoration at the start or end of each cell,\n // depending on whether the new index is before or after the\n // original index.\n const decorationPos =\n cellResolvedPos.pos +\n (newIndex > originalIndex ? cellNode.nodeSize - 2 : 0);\n\n decorations.push(\n // The widget is a small bar which spans the height of the cell.\n Decoration.widget(decorationPos, () => {\n const widget = document.createElement(\"div\");\n widget.className = \"bn-table-drop-cursor\";\n widget.style.top = \"0\";\n widget.style.bottom = \"0\";\n // This is only necessary because the drop indicator's width\n // is an even number of pixels, whereas the border between\n // table cells is an odd number of pixels. So this makes the\n // positioning slightly more consistent regardless of where\n // the column is being dropped.\n if (newIndex > originalIndex) {\n widget.style.right = \"-2px\";\n } else {\n widget.style.left = \"-3px\";\n }\n widget.style.width = \"4px\";\n\n return widget;\n }),\n );\n });\n }\n\n return DecorationSet.create(state.doc, decorations);\n },\n },\n }),\n ],\n\n /**\n * Callback that should be set on the `dragStart` event for whichever element\n * is used as the column drag handle.\n */\n colDragStart(event: {\n dataTransfer: DataTransfer | null;\n clientX: number;\n }) {\n if (\n view === undefined ||\n view.state === undefined ||\n view.state.colIndex === undefined\n ) {\n throw new Error(\n \"Attempted to drag table column, but no table block was hovered prior.\",\n );\n }\n\n view.state.draggingState = {\n draggedCellOrientation: \"col\",\n originalIndex: view.state.colIndex,\n mousePos: event.clientX,\n };\n view.emitUpdate();\n\n editor.transact((tr) =>\n tr.setMeta(tableHandlesPluginKey, {\n draggedCellOrientation:\n view!.state!.draggingState!.draggedCellOrientation,\n originalIndex: view!.state!.colIndex,\n newIndex: view!.state!.colIndex,\n tablePos: view!.tablePos,\n }),\n );\n\n if (editor.headless) {\n return;\n }\n\n setHiddenDragImage(editor.prosemirrorView.root);\n event.dataTransfer!.setDragImage(dragImageElement!, 0, 0);\n event.dataTransfer!.effectAllowed = \"move\";\n },\n\n /**\n * Callback that should be set on the `dragStart` event for whichever element\n * is used as the row drag handle.\n */\n rowDragStart(event: {\n dataTransfer: DataTransfer | null;\n clientY: number;\n }) {\n if (view!.state === undefined || view!.state.rowIndex === undefined) {\n throw new Error(\n \"Attempted to drag table row, but no table block was hovered prior.\",\n );\n }\n\n view!.state.draggingState = {\n draggedCellOrientation: \"row\",\n originalIndex: view!.state.rowIndex,\n mousePos: event.clientY,\n };\n view!.emitUpdate();\n\n editor.transact((tr) =>\n tr.setMeta(tableHandlesPluginKey, {\n draggedCellOrientation:\n view!.state!.draggingState!.draggedCellOrientation,\n originalIndex: view!.state!.rowIndex,\n newIndex: view!.state!.rowIndex,\n tablePos: view!.tablePos,\n }),\n );\n\n if (editor.headless) {\n return;\n }\n\n setHiddenDragImage(editor.prosemirrorView.root);\n event.dataTransfer!.setDragImage(dragImageElement!, 0, 0);\n event.dataTransfer!.effectAllowed = \"copyMove\";\n },\n\n /**\n * Callback that should be set on the `dragEnd` event for both the element\n * used as the row drag handle, and the one used as the column drag handle.\n */\n dragEnd() {\n if (view!.state === undefined) {\n throw new Error(\n \"Attempted to drag table row, but no table block was hovered prior.\",\n );\n }\n\n view!.state.draggingState = undefined;\n view!.emitUpdate();\n\n editor.transact((tr) => tr.setMeta(tableHandlesPluginKey, null));\n\n if (editor.headless) {\n return;\n }\n\n unsetHiddenDragImage(editor.prosemirrorView.root);\n },\n\n /**\n * Freezes the drag handles. When frozen, they will stay attached to the same\n * cell regardless of which cell is hovered by the mouse cursor.\n */\n freezeHandles() {\n view!.menuFrozen = true;\n },\n\n /**\n * Unfreezes the drag handles. When frozen, they will stay attached to the\n * same cell regardless of which cell is hovered by the mouse cursor.\n */\n unfreezeHandles() {\n view!.menuFrozen = false;\n },\n\n /**\n * Hides the table handles unless they are currently frozen (e.g. a\n * handle menu is open). Used to dismiss the handles on scroll without\n * interfering with open submenus.\n */\n hideHandlesIfNotFrozen() {\n if (!view!.menuFrozen && view!.state?.show) {\n view!.state.show = false;\n view!.state.showAddOrRemoveRowsButton = false;\n view!.state.showAddOrRemoveColumnsButton = false;\n view!.emitUpdate();\n }\n },\n\n getCellsAtRowHandle(\n block: BlockFromConfigNoChildren,\n relativeRowIndex: RelativeCellIndices[\"row\"],\n ) {\n return getCellsAtRowHandle(block, relativeRowIndex);\n },\n\n /**\n * Get all the cells in a column of the table block.\n */\n getCellsAtColumnHandle(\n block: BlockFromConfigNoChildren,\n relativeColumnIndex: RelativeCellIndices[\"col\"],\n ) {\n return getCellsAtColumnHandle(block, relativeColumnIndex);\n },\n\n /**\n * Sets the selection to the given cell or a range of cells.\n * @returns The new state after the selection has been set.\n */\n setCellSelection(\n state: EditorState,\n relativeStartCell: RelativeCellIndices,\n relativeEndCell: RelativeCellIndices = relativeStartCell,\n ) {\n if (!view) {\n throw new Error(\"Table handles view not initialized\");\n }\n\n const tableResolvedPos = state.doc.resolve(view.tablePos! + 1);\n const startRowResolvedPos = state.doc.resolve(\n tableResolvedPos.posAtIndex(relativeStartCell.row) + 1,\n );\n const startCellResolvedPos = state.doc.resolve(\n // No need for +1, since CellSelection expects the position before the cell\n startRowResolvedPos.posAtIndex(relativeStartCell.col),\n );\n const endRowResolvedPos = state.doc.resolve(\n tableResolvedPos.posAtIndex(relativeEndCell.row) + 1,\n );\n const endCellResolvedPos = state.doc.resolve(\n // No need for +1, since CellSelection expects the position before the cell\n endRowResolvedPos.posAtIndex(relativeEndCell.col),\n );\n\n // Begin a new transaction to set the selection\n const tr = state.tr;\n\n // Set the selection to the given cell or a range of cells\n tr.setSelection(\n new CellSelection(startCellResolvedPos, endCellResolvedPos),\n );\n\n // Quickly apply the transaction to get the new state to update the selection before splitting the cell\n return state.apply(tr);\n },\n\n /**\n * Adds a row or column to the table using prosemirror-table commands\n */\n addRowOrColumn(\n index: RelativeCellIndices[\"row\"] | RelativeCellIndices[\"col\"],\n direction:\n | { orientation: \"row\"; side: \"above\" | \"below\" }\n | { orientation: \"column\"; side: \"left\" | \"right\" },\n ) {\n editor.exec((beforeState, dispatch) => {\n const state = this.setCellSelection(\n beforeState,\n direction.orientation === \"row\"\n ? { row: index, col: 0 }\n : { row: 0, col: index },\n );\n\n if (direction.orientation === \"row\") {\n if (direction.side === \"above\") {\n return addRowBefore(state, dispatch);\n } else {\n return addRowAfter(state, dispatch);\n }\n } else {\n if (direction.side === \"left\") {\n return addColumnBefore(state, dispatch);\n } else {\n return addColumnAfter(state, dispatch);\n }\n }\n });\n },\n\n /**\n * Removes a row or column from the table using prosemirror-table commands\n */\n removeRowOrColumn(\n index: RelativeCellIndices[\"row\"] | RelativeCellIndices[\"col\"],\n direction: \"row\" | \"column\",\n ) {\n if (direction === \"row\") {\n return editor.exec((beforeState, dispatch) => {\n const state = this.setCellSelection(beforeState, {\n row: index,\n col: 0,\n });\n return deleteRow(state, dispatch);\n });\n } else {\n return editor.exec((beforeState, dispatch) => {\n const state = this.setCellSelection(beforeState, {\n row: 0,\n col: index,\n });\n return deleteColumn(state, dispatch);\n });\n }\n },\n\n /**\n * Merges the cells in the table block.\n */\n mergeCells(cellsToMerge?: {\n relativeStartCell: RelativeCellIndices;\n relativeEndCell: RelativeCellIndices;\n }) {\n return editor.exec((beforeState, dispatch) => {\n const state = cellsToMerge\n ? this.setCellSelection(\n beforeState,\n cellsToMerge.relativeStartCell,\n cellsToMerge.relativeEndCell,\n )\n : beforeState;\n\n return mergeCells(state, dispatch);\n });\n },\n\n /**\n * Splits the cell in the table block.\n * If no cell is provided, the current cell selected will be split.\n */\n splitCell(relativeCellToSplit?: RelativeCellIndices) {\n return editor.exec((beforeState, dispatch) => {\n const state = relativeCellToSplit\n ? this.setCellSelection(beforeState, relativeCellToSplit)\n : beforeState;\n\n return splitCell(state, dispatch);\n });\n },\n\n /**\n * Gets the start and end cells of the current cell selection.\n * @returns The start and end cells of the current cell selection.\n */\n getCellSelection():\n | undefined\n | {\n from: RelativeCellIndices;\n to: RelativeCellIndices;\n /**\n * All of the cells that are within the selected range.\n */\n cells: RelativeCellIndices[];\n } {\n // Based on the current selection, find the table cells that are within the selected range\n\n return editor.transact((tr) => {\n const selection = tr.selection;\n\n let $fromCell = selection.$from;\n let $toCell = selection.$to;\n if (isTableCellSelection(selection)) {\n // When the selection is a table cell selection, we can find the\n // from and to cells by iterating over the ranges in the selection\n const { ranges } = selection;\n ranges.forEach((range) => {\n $fromCell = range.$from.min($fromCell ?? range.$from);\n $toCell = range.$to.max($toCell ?? range.$to);\n });\n } else {\n // When the selection is a normal text selection\n // Assumes we are within a tableParagraph\n // And find the from and to cells by resolving the positions\n $fromCell = tr.doc.resolve(\n selection.$from.pos - selection.$from.parentOffset - 1,\n );\n $toCell = tr.doc.resolve(\n selection.$to.pos - selection.$to.parentOffset - 1,\n );\n\n // Opt-out when the selection is not pointing into cells\n if ($fromCell.pos === 0 || $toCell.pos === 0) {\n return undefined;\n }\n }\n\n // Find the row and table that the from and to cells are in\n const $fromRow = tr.doc.resolve(\n $fromCell.pos - $fromCell.parentOffset - 1,\n );\n const $toRow = tr.doc.resolve($toCell.pos - $toCell.parentOffset - 1);\n\n // Find the table\n const $table = tr.doc.resolve($fromRow.pos - $fromRow.parentOffset - 1);\n\n // Find the column and row indices of the from and to cells\n const fromColIndex = $fromCell.index($fromRow.depth);\n const fromRowIndex = $fromRow.index($table.depth);\n const toColIndex = $toCell.index($toRow.depth);\n const toRowIndex = $toRow.index($table.depth);\n\n const cells: RelativeCellIndices[] = [];\n for (let row = fromRowIndex; row <= toRowIndex; row++) {\n for (let col = fromColIndex; col <= toColIndex; col++) {\n cells.push({ row, col });\n }\n }\n\n return {\n from: {\n row: fromRowIndex,\n col: fromColIndex,\n },\n to: {\n row: toRowIndex,\n col: toColIndex,\n },\n cells,\n };\n });\n },\n\n /**\n * Gets the direction of the merge based on the current cell selection.\n *\n * Returns undefined when there is no cell selection, or the selection is not within a table.\n */\n getMergeDirection(\n block:\n | BlockFromConfigNoChildren\n | undefined,\n ) {\n return editor.transact((tr) => {\n const isSelectingTableCells = isTableCellSelection(tr.selection)\n ? tr.selection\n : undefined;\n\n if (\n !isSelectingTableCells ||\n !block ||\n // Only offer the merge button if there is more than one cell selected.\n isSelectingTableCells.ranges.length <= 1\n ) {\n return undefined;\n }\n\n const cellSelection = this.getCellSelection();\n\n if (!cellSelection) {\n return undefined;\n }\n\n if (areInSameColumn(cellSelection.from, cellSelection.to, block)) {\n return \"vertical\";\n }\n\n return \"horizontal\";\n });\n },\n\n cropEmptyRowsOrColumns(\n block: BlockFromConfigNoChildren,\n removeEmpty: \"columns\" | \"rows\",\n ) {\n return cropEmptyRowsOrColumns(block, removeEmpty);\n },\n\n addRowsOrColumns(\n block: BlockFromConfigNoChildren,\n addType: \"columns\" | \"rows\",\n numToAdd: number,\n ) {\n return addRowsOrColumns(block, addType, numToAdd);\n },\n } as const;\n});\n","import type { Node as PMNode } from \"prosemirror-model\";\nimport { Plugin, PluginKey, type Transaction } from \"prosemirror-state\";\nimport { Decoration, DecorationSet } from \"prosemirror-view\";\nimport {\n createExtension,\n ExtensionOptions,\n} from \"../../editor/BlockNoteExtension.js\";\n\nconst PLUGIN_KEY = new PluginKey(\"trailingNode\");\n\n// Skip the widget when the editor isn't editable, or when the document already\n// ends with an empty paragraph block (since the user can just type into it).\nfunction shouldShowTrailingWidget(doc: PMNode, isEditable: boolean): boolean {\n if (!isEditable) {\n return false;\n }\n\n const rootGroup = doc.lastChild;\n const lastBlock = rootGroup?.lastChild;\n const lastContent = lastBlock?.firstChild;\n\n return !(\n lastBlock?.type.name === \"blockContainer\" &&\n lastContent?.type.name === \"paragraph\" &&\n lastContent.content.size === 0\n );\n}\n\n/**\n * Renders a fake trailing block as a widget decoration after the last block of\n * the document. Clicking it inserts a real trailing block and moves the\n * selection into it. This way the trailing block is not part of the document\n * content, so it doesn't appear when the editor is read-only or when the\n * content is exported.\n */\nexport const TrailingNodeExtension = createExtension(\n ({ editor }: ExtensionOptions) => {\n function createTrailingWidget(pos: number): Decoration {\n return Decoration.widget(\n pos,\n () => {\n const el = document.createElement(\"div\");\n el.className = \"bn-trailing-block\";\n el.contentEditable = \"false\";\n el.addEventListener(\"mousedown\", (event) => {\n // Stop ProseMirror from trying to place the selection somewhere\n // based on this click.\n event.preventDefault();\n\n editor.transact((tr) => {\n const [insertedBlock] = editor.insertBlocks(\n [{ type: \"paragraph\" }],\n editor.document[editor.document.length - 1],\n \"after\",\n );\n editor.setTextCursorPosition(insertedBlock, \"start\");\n tr.scrollIntoView();\n });\n\n editor.prosemirrorView?.focus();\n });\n return el;\n },\n { side: 1 },\n );\n }\n\n // Maps the existing DecorationSet through the transaction, then\n // incrementally adds or removes the widget only if the show/hide state\n // crossed over. The underlying Decoration (and its rendered DOM) stays\n // reference-stable across transactions.\n function nextDecorationSet(\n tr: Transaction,\n oldSet: DecorationSet,\n isEditable: boolean,\n ): DecorationSet {\n const mapped = oldSet.map(tr.mapping, tr.doc);\n const existing = mapped.find();\n const wasShowing = existing.length > 0;\n const shouldShow = shouldShowTrailingWidget(tr.doc, isEditable);\n\n if (wasShowing === shouldShow) {\n return mapped;\n }\n if (wasShowing) {\n return mapped.remove(existing);\n }\n return mapped.add(tr.doc, [\n createTrailingWidget(tr.doc.content.size - 1),\n ]);\n }\n\n return {\n key: \"trailingNode\",\n prosemirrorPlugins: [\n new Plugin({\n key: PLUGIN_KEY,\n state: {\n init: (_, state) =>\n nextDecorationSet(\n state.tr,\n DecorationSet.empty,\n editor.isEditable,\n ),\n apply: (tr, oldSet) => {\n if (!tr.docChanged && !tr.getMeta(PLUGIN_KEY)) {\n return oldSet;\n }\n return nextDecorationSet(tr, oldSet, editor.isEditable);\n },\n },\n // Editable changes don't dispatch a transaction on their own, so the\n // plugin state can't re-evaluate on its own. Watch for the change\n // and dispatch a no-op transaction tagged with this plugin's key so\n // `apply` re-runs and adds or removes the widget.\n view(view) {\n let lastEditable = view.editable;\n return {\n update(view) {\n if (view.editable === lastEditable) {\n return;\n }\n lastEditable = view.editable;\n view.dispatch(view.state.tr.setMeta(PLUGIN_KEY, true));\n },\n };\n },\n props: {\n decorations: (state) => PLUGIN_KEY.getState(state),\n },\n }),\n ],\n } as const;\n 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