import { type Graph as G6Graph } from '@antv/g6';
import type { GraphNode, GraphEdge } from '../@types';
export interface GraphInitOptions {
    container: HTMLElement;
    width?: number;
    height?: number;
}
export interface EditCallbacks {
    onAddNode?: (x: number, y: number) => void;
    /** @deprecated 使用 onProposeConnection */
    onAddEdge?: (sourceId: string, targetId: string) => void;
    /** 用户完成一次连线操作（两节点已选定），由 UI 层弹窗确认后再调用 addEdge */
    onProposeConnection?: (sourceId: string, targetId: string) => void;
    onDeleteNode?: (nodeId: string) => void;
    onDeleteEdge?: (edgeId: string) => void;
    onDataChange?: (nodes: GraphNode[], edges: GraphEdge[]) => void;
    /** 右键节点菜单回调 */
    onNodeContextMenu?: (nodeId: string, label: string, color: string, menuX: number, menuY: number, clientX: number, clientY: number) => void;
    /** 右键边菜单回调 */
    onEdgeContextMenu?: (edgeId: string, sourceId: string, targetId: string, label: string, menuX: number, menuY: number, clientX: number, clientY: number) => void;
}
export interface InitOptions {
    editMode?: boolean;
    onAddNode?: (x: number, y: number) => void;
    onAddEdge?: (sourceId: string, targetId: string) => void;
    onProposeConnection?: (sourceId: string, targetId: string) => void;
    onDeleteNode?: (nodeId: string) => void;
    onDeleteEdge?: (edgeId: string) => void;
    onDataChange?: (nodes: GraphNode[], edges: GraphEdge[]) => void;
    onNodeContextMenu?: (nodeId: string, label: string, color: string, menuX: number, menuY: number, clientX: number, clientY: number) => void;
    onEdgeContextMenu?: (edgeId: string, sourceId: string, targetId: string, label: string, menuX: number, menuY: number, clientX: number, clientY: number) => void;
}
/**
 * G6 图谱基础类：负责 Graph 生命周期、尺寸、fitView 等通用能力
 */
export declare class BaseG6Graph {
    protected graph: G6Graph | null;
    protected container: HTMLElement | null;
    private resizeHandler;
    protected createGraph(config: Omit<ConstructorParameters<typeof G6Graph>[0], 'container' | 'width' | 'height'>, options: GraphInitOptions): void;
    private setupResizeHandler;
    private cleanupResizeHandler;
    hasGraph(): boolean;
    fitView(padding?: number): void;
    destroy(): void;
}
/**
 * 具体的知识图谱实现：白底黑字 + 实体/关系配色 + 力导布局
 */
/** 布局类型 */
export type LayoutType = 'force' | 'circular';
export type GraphTheme = 'light' | 'dark';
/** 编辑工具类型 */
export type ToolType = 'select' | 'addNode' | 'addEdge' | 'deleteNode' | 'deleteEdge';
/** 工具交互回调 */
export interface EditToolCallbacks {
    onNodeClick?: (nodeId: string) => void;
    onCanvasClick?: (x: number, y: number) => void;
}
export declare class KnowledgeGraph extends BaseG6Graph {
    private contextMenuHandler;
    private globalMouseUpHandler;
    private globalKeyDownHandler;
    /** 当前布局类型，用于切换布局 */
    private currentLayoutType;
    /** 图谱主题 */
    private theme;
    /** ========== 编辑模式相关 ========== */
    private isEditMode;
    private editCallbacks;
    private pendingEdge;
    private editEventsBound;
    private linkPreviewSvg;
    private linkPreviewLine;
    private pendingPreviewMove;
    private altLinkDrag;
    private altLinkMove;
    private altLinkUp;
    /** Alt 拖线松手后 G6 仍会触发 node:click，用此标志吞掉一次点击 */
    private suppressNextNodeClick;
    /** ========== 工具模式相关 ========== */
    private toolType;
    private editToolCallbacks;
    /** addEdge 模式：已选中的源节点 */
    private edgeSourceNodeId;
    /** addEdge 模式：预览连线源节点坐标 */
    private edgeSourcePos;
    /** 设置编辑回调函数 */
    setEditCallbacks(callbacks: EditCallbacks): void;
    /** 设置工具交互回调（用于工具模式下的节点/画布点击通知） */
    setEditToolCallbacks(callbacks: EditToolCallbacks): void;
    setTheme(theme: GraphTheme): void;
    private getThemePalette;
    private applyThemeToExistingGraph;
    /** 设置当前工具类型，同时更新 canvas cursor */
    setToolType(type: ToolType): void;
    /** 获取当前工具类型 */
    getToolType(): ToolType;
    private resetEdgeSelectState;
    /** 工具模式节点点击处理（由 GraphVisualization 调用） */
    handleToolNodeClick(nodeId: string, x: number, y: number): void;
    /** 工具模式画布点击处理（由 GraphVisualization 调用） */
    handleToolCanvasClick(x: number, y: number): void;
    /** 设置编辑模式 */
    setEditMode(enabled: boolean): void;
    /** 获取当前数据（用于保存） */
    getEditData(): {
        nodes: GraphNode[];
        edges: GraphEdge[];
    };
    /**
     * 更新指定节点的标签
     */
    updateNodeLabel(nodeId: string, newLabel: string): void;
    /**
     * 更新指定节点的颜色（fill + stroke）
     */
    updateNodeColor(nodeId: string, color: string): void;
    /**
     * 更新指定边的属性（label、source、target）
     */
    updateEdge(edgeId: string, updates: {
        label?: string;
        source?: string;
        target?: string;
    }): void;
    /**
     * 删除节点
     */
    deleteNode(nodeId: string): void;
    /**
     * 删除边
     */
    deleteEdge(edgeId: string): void;
    /**
     * 在画布上新增节点（编辑模式）
     */
    addNodeAt(x: number, y: number, label: string, type?: string): void;
    /**
     * 新增一条有向边（编辑模式）
     */
    addEdgeBetween(sourceId: string, targetId: string, label?: string): void;
    /** 从指定节点开始「拉出连线」状态（等价于第一次点选源节点） */
    startConnectFrom(nodeId: string): void;
    /** 画布视口中心对应的图坐标（用于在中心添加节点） */
    getViewportCenterGraphPoint(): {
        x: number;
        y: number;
    } | null;
    getNodeDisplayLabel(nodeId: string): string;
    private fireProposeConnection;
    private ensureLinkPreviewLayer;
    private hideLinkPreview;
    private showLinkPreviewLine;
    /**
     * 将图数据坐标 (model.x / model.y) 转为浏览器视口 client 坐标。
     * 注意：keyShape.getBBox() 是节点局部坐标，不能当作图坐标使用。
     * refClientX/refClientY 在无 getClientByPoint 时用于局部线性反推（通常取当前鼠标位置）。
     */
    private graphPointToViewportClient;
    private updateLinkPreviewToClient;
    private findNodeIdAtClient;
    private attachPendingPreviewListeners;
    private detachPendingPreviewListeners;
    private beginAltLinkDrag;
    private onAltLinkMouseUp;
    private endAltLinkDrag;
    private clearPendingEdgeOnly;
    private clearPendingConnection;
    /** 获取布局配置：力导向（更分散、少重叠）或环形（中心放射，适合枢纽图） */
    private getLayoutConfig;
    private getColorByType;
    private getColorByRelation;
    init(options: GraphInitOptions, nodes: GraphNode[], edges: GraphEdge[], editOptions?: InitOptions): void;
    update(nodes: GraphNode[], edges: GraphEdge[]): void;
    resetLayout(): void;
    /** 切换布局类型：力导向（更分散）或环形（中心放射，适合枢纽图） */
    switchLayout(type: LayoutType): void;
    /** 当前布局类型 */
    getLayoutType(): LayoutType;
    /**
     * G6 圆形节点直径（像素）。接口常把 `size` 当权重/等级给 1～10，若直接当直径会极小；
     * 低度数时原公式最小为 15，编辑模式下点选困难，故设下限并仅在大于等于下限时采信 `node.size`。
     */
    private resolveNodeVisualSize;
    private processData;
    private setupEvents;
    private setupEditModeEvents;
    /** addEdge 工具的节点点击处理：链式选择两个节点后触发连线 */
    private handleEdgeToolClick;
    destroy(): void;
}