import { CompactType, Layout } from './react-grid-layout.utils';
import { KtdDraggingData, KtdDraggingMultipleData, KtdGridCfg, KtdGridCompactType, KtdGridItemRect, KtdGridLayout, KtdGridLayoutItem } from '../grid.definitions';
import { KtdDictionary } from '../../types';
import { KtdGridItemComponent } from '../grid-item/grid-item.component';
/** Tracks items by id. This function is mean to be used in conjunction with the ngFor that renders the 'ktd-grid-items' */
export declare function ktdTrackById(index: number, item: {
    id: string;
}): string;
/** Given a layout, the gridHeight and the gap return the resulting rowHeight */
export declare function ktdGetGridItemRowHeight(layout: KtdGridLayout, gridHeight: number, gap: number): number;
/**
 * Call react-grid-layout utils 'compact()' function and return the compacted layout.
 * @param layout to be compacted.
 * @param compactType, type of compaction.
 * @param cols, number of columns of the grid.
 */
export declare function ktdGridCompact(layout: KtdGridLayout, compactType: KtdGridCompactType, cols: number): KtdGridLayout;
/**
 * Call react-grid-layout utils 'sortLayoutItems()' function to return the 'layout' sorted by 'compactType'
 * @param {Layout} layout
 * @param {CompactType} compactType
 * @returns {Layout}
 */
export declare function ktdGridSortLayoutItems(layout: Layout, compactType: CompactType): Layout;
/** Returns a Dictionary where the key is the id and the value is the change applied to that item. If no changes Dictionary is empty. */
export declare function ktdGetGridLayoutDiff(gridLayoutA: KtdGridLayoutItem[], gridLayoutB: KtdGridLayoutItem[]): KtdDictionary<{
    change: 'move' | 'resize' | 'moveresize';
}>;
/**
 * Given the grid config & layout data and the current drag position & information, returns the corresponding layout and drag item position
 * @param gridItem grid item that is been dragged
 * @param config current grid configuration
 * @param compactionType type of compaction that will be performed
 * @param draggingData contains all the information about the drag
 */
export declare function ktdGridItemDragging(gridItem: KtdGridItemComponent, config: KtdGridCfg, compactionType: CompactType, draggingData: KtdDraggingData): {
    layout: KtdGridLayoutItem[];
    draggedItemPos: KtdGridItemRect;
};
/**
 * Given the grid config & layout data and the current drag position & information, returns the corresponding layout and drag item position
 * @param gridItem grid item that is been dragged
 * @param config current grid configuration
 * @param compactionType type of compaction that will be performed
 * @param draggingData contains all the information about the drag
 */
export declare function ktdGridItemsDragging(gridItems: KtdGridItemComponent[], config: KtdGridCfg, compactionType: CompactType, draggingData: KtdDraggingMultipleData): {
    layout: KtdGridLayoutItem[];
    draggedItemPos: KtdDictionary<KtdGridItemRect>;
};
/**
 * Given the grid config & layout data and the current drag position & information, returns the corresponding layout and drag item position
 * @param gridItem grid item that is been dragged
 * @param config current grid configuration
 * @param compactionType type of compaction that will be performed
 * @param draggingData contains all the information about the drag
 */
export declare function ktdGridItemResizing(gridItem: KtdGridItemComponent, config: KtdGridCfg, compactionType: CompactType, draggingData: KtdDraggingData): {
    layout: KtdGridLayoutItem[];
    draggedItemPos: KtdGridItemRect;
};
/** Returns true if both item1 and item2 KtdGridLayoutItems are equivalent. */
export declare function ktdGridItemLayoutItemAreEqual(item1: KtdGridLayoutItem, item2: KtdGridLayoutItem): boolean;