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import { DragAndDropHelper } from '../../../pluginUtils/DragAndDrop/DragAndDropHelper';
import { formatInsertPointWithContentModel } from 'roosterjs-content-model-api';
import { getCMTableFromTable } from '../utils/getTableFromContentModel';
import type { TableEditFeature } from './TableEditFeature';
import type { OnTableEditorCreatedCallback } from '../../OnTableEditorCreatedCallback';
import type { DragAndDropHandler } from '../../../pluginUtils/DragAndDrop/DragAndDropHandler';
import {
cloneModel,
createContentModelDocument,
createSelectionMarker,
getFirstSelectedTable,
isNodeOfType,
mergeModel,
mutateBlock,
normalizeRect,
setParagraphNotImplicit,
setSelection,
} from 'roosterjs-content-model-dom';
import type {
DOMInsertPoint,
DOMSelection,
IEditor,
ReadonlyContentModelTable,
Rect,
ShallowMutableContentModelDocument,
} from 'roosterjs-content-model-types';
const TABLE_MOVER_LENGTH = 12;
/**
* @internal
*/
export const TABLE_MOVER_ID = '_Table_Mover';
const TABLE_MOVER_STYLE_KEY = '_TableMoverCursorStyle';
/**
* @internal
* Allows user to move table to another position
* Contains the function to select whole table
*/
export function createTableMover(
table: HTMLTableElement,
editor: IEditor,
isRTL: boolean,
onFinishDragging: (table: HTMLTableElement) => void,
onStart: () => void,
onEnd: (disposeHandler: boolean) => void,
contentDiv?: EventTarget | null,
anchorContainer?: HTMLElement,
onTableEditorCreated?: OnTableEditorCreatedCallback,
disableMovement?: boolean
): TableEditFeature | null {
const rect = normalizeRect(table.getBoundingClientRect());
if (!isTableTopVisible(editor, rect, contentDiv as Node)) {
return null;
}
const zoomScale = editor.getDOMHelper().calculateZoomScale();
const document = table.ownerDocument;
const createElementData = {
tag: 'div',
style: 'position: fixed; cursor: move; user-select: none; border: 1px solid #808080',
};
const div = createElement(createElementData, document) as HTMLDivElement;
div.id = TABLE_MOVER_ID;
div.style.width = `${TABLE_MOVER_LENGTH}px`;
div.style.height = `${TABLE_MOVER_LENGTH}px`;
(anchorContainer || document.body).appendChild(div);
const context: TableMoverContext = {
table,
zoomScale,
rect,
isRTL,
editor,
div,
onFinishDragging,
onStart,
onEnd,
disableMovement,
};
setDivPosition(context, div);
const featureHandler = new TableMoverFeature(
div,
context,
() => {},
disableMovement
? { onDragEnd }
: {
onDragStart,
onDragging,
onDragEnd,
},
context.zoomScale,
onTableEditorCreated,
editor.getEnvironment().isMobileOrTablet
);
return { node: table, div, featureHandler };
}
/**
* @internal
* Exported for testing
*/
export interface TableMoverContext {
table: HTMLTableElement;
zoomScale: number;
rect: Rect | null;
isRTL: boolean;
editor: IEditor;
div: HTMLElement;
onFinishDragging: (table: HTMLTableElement) => void;
onStart: () => void;
onEnd: (disposeHandler: boolean) => void;
disableMovement?: boolean;
}
/**
* @internal
* Exported for testing
*/
export interface TableMoverInitValue {
cmTable: ReadonlyContentModelTable | undefined;
initialSelection: DOMSelection | null;
tableRect: HTMLDivElement;
}
class TableMoverFeature extends DragAndDropHelper<TableMoverContext, TableMoverInitValue> {
private disposer: undefined | (() => void);
constructor(
div: HTMLElement,
context: TableMoverContext,
onSubmit: (
context: TableMoverContext,
trigger: HTMLElement,
container?: HTMLElement
) => void,
handler: DragAndDropHandler<TableMoverContext, TableMoverInitValue>,
zoomScale: number,
onTableEditorCreated?: OnTableEditorCreatedCallback,
forceMobile?: boolean | undefined
) {
super(div, context, onSubmit, handler, zoomScale, forceMobile);
this.disposer = onTableEditorCreated?.('TableMover', div);
}
dispose(): void {
this.disposer?.();
this.disposer = undefined;
super.dispose();
}
}
function setDivPosition(context: TableMoverContext, trigger: HTMLElement) {
const { rect } = context;
Eif (rect) {
trigger.style.top = `${rect.top - TABLE_MOVER_LENGTH}px`;
trigger.style.left = `${rect.left - TABLE_MOVER_LENGTH - 2}px`;
}
}
function isTableTopVisible(editor: IEditor, rect: Rect | null, contentDiv?: Node | null): boolean {
const visibleViewport = editor.getVisibleViewport();
if (isNodeOfType(contentDiv, 'ELEMENT_NODE') && visibleViewport && rect) {
const containerRect = normalizeRect(contentDiv.getBoundingClientRect());
return !!containerRect && containerRect.top <= rect.top && visibleViewport.top <= rect.top;
}
return true;
}
function setTableMoverCursor(editor: IEditor, state: boolean, type?: 'move' | 'copy') {
editor?.setEditorStyle(TABLE_MOVER_STYLE_KEY, state ? 'cursor: ' + type ?? 'move' : null);
}
// Get insertion point from coordinate.
function getNodePositionFromEvent(editor: IEditor, x: number, y: number): DOMInsertPoint | null {
const doc = editor.getDocument();
const domHelper = editor.getDOMHelper();
Eif (doc.caretRangeFromPoint) {
// Chrome, Edge, Safari, Opera
const range = doc.caretRangeFromPoint(x, y);
if (range && domHelper.isNodeInEditor(range.startContainer)) {
return { node: range.startContainer, offset: range.startOffset };
}
}
Eif ('caretPositionFromPoint' in doc) {
// Firefox
const pos = (doc as any).caretPositionFromPoint(x, y);
Iif (pos && domHelper.isNodeInEditor(pos.offsetNode)) {
return { node: pos.offsetNode, offset: pos.offset };
}
}
Eif (doc.elementFromPoint) {
// Fallback
const element = doc.elementFromPoint(x, y);
Iif (element && domHelper.isNodeInEditor(element)) {
return { node: element, offset: 0 };
}
}
return null;
}
/**
* @internal
* Exported for testing
*/
export function onDragStart(context: TableMoverContext): TableMoverInitValue {
context.onStart();
const { editor, table, div } = context;
setTableMoverCursor(editor, true, 'move');
// Create table outline rectangle
const trect = table.getBoundingClientRect();
const createElementData = {
tag: 'div',
style: 'position: fixed; user-select: none; border: 1px solid #808080',
};
const tableRect = createElement(createElementData, document) as HTMLDivElement;
tableRect.style.width = `${trect.width}px`;
tableRect.style.height = `${trect.height}px`;
tableRect.style.top = `${trect.top}px`;
tableRect.style.left = `${trect.left}px`;
div.parentNode?.appendChild(tableRect);
// Get drag start selection
const initialSelection = editor.getDOMSelection();
// Get Table block in content model
const cmTable = getCMTableFromTable(editor, table);
return {
cmTable,
initialSelection,
tableRect,
};
}
/**
* @internal
* Exported for testing
*/
export function onDragging(
context: TableMoverContext,
event: MouseEvent,
initValue: TableMoverInitValue
) {
const { tableRect } = initValue;
const { editor } = context;
// Move table outline rectangle
tableRect.style.top = `${event.clientY + TABLE_MOVER_LENGTH}px`;
tableRect.style.left = `${event.clientX + TABLE_MOVER_LENGTH}px`;
const pos = getNodePositionFromEvent(editor, event.clientX, event.clientY);
if (pos) {
const range = editor.getDocument().createRange();
range.setStart(pos.node, pos.offset);
range.collapse(true);
editor.setDOMSelection({ type: 'range', range, isReverted: false });
return true;
}
return false;
}
/**
* @internal
* Exported for testing
*/
export function onDragEnd(
context: TableMoverContext,
event: MouseEvent,
initValue: TableMoverInitValue | undefined
) {
const { editor, table, onFinishDragging: selectWholeTable, disableMovement } = context;
const element = event.target;
// Remove table outline rectangle
initValue?.tableRect.remove();
// Reset cursor
setTableMoverCursor(editor, false);
if (element == context.div) {
// Table mover was only clicked, select whole table and do not dismiss the handler element.
selectWholeTable(table);
context.onEnd(false /* disposeHandler */);
return true;
} else {
// Check if table was dragged on itself, element is not in editor, or movement is disabled
if (
table.contains(element as Node) ||
!editor.getDOMHelper().isNodeInEditor(element as Node) ||
disableMovement
) {
editor.setDOMSelection(initValue?.initialSelection ?? null);
context.onEnd(true /* disposeHandler */);
return false;
}
let insertionSuccess: boolean = false;
// Get position to insert table
const insertPosition = getNodePositionFromEvent(editor, event.clientX, event.clientY);
Eif (insertPosition) {
// Move table to new position
formatInsertPointWithContentModel(
editor,
insertPosition,
(model, context, ip) => {
// Remove old table
const [oldTable, path] = getFirstSelectedTable(model);
Eif (oldTable) {
const index = path[0].blocks.indexOf(oldTable);
mutateBlock(path[0]).blocks.splice(index, 1);
}
Eif (ip && initValue?.cmTable) {
// Insert new table
const doc: ShallowMutableContentModelDocument = createContentModelDocument();
doc.blocks.push(oldTable ?? mutateBlock(initValue.cmTable));
insertionSuccess = !!mergeModel(model, cloneModel(doc), context, {
mergeFormat: 'none',
insertPosition: ip,
});
Eif (insertionSuccess) {
// After mergeModel, the new table should be selected
const finalTable = getFirstSelectedTable(model)[0] ?? initValue.cmTable;
Eif (finalTable) {
// Add selection marker to the first cell of the table
const firstCell = finalTable.rows[0].cells[0];
const markerParagraph = firstCell?.blocks[0];
Eif (markerParagraph?.blockType == 'Paragraph') {
const marker = createSelectionMarker(model.format);
mutateBlock(markerParagraph).segments.unshift(marker);
setParagraphNotImplicit(markerParagraph);
setSelection(model, marker);
}
}
}
return insertionSuccess;
}
},
{
// Select first cell of the old table
selectionOverride: {
type: 'table',
firstColumn: 0,
firstRow: 0,
lastColumn: 0,
lastRow: 0,
table: table,
},
apiName: 'TableMover',
}
);
} else {
// No movement, restore initial selection
editor.setDOMSelection(initValue?.initialSelection ?? null);
}
context.onEnd(true /* disposeHandler */);
return insertionSuccess;
}
}
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