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import { areSameSelections } from '../../corePlugin/cache/areSameSelections';
import { ensureUniqueId } from '../setEditorStyle/ensureUniqueId';
import { findLastedCoInMergedCell } from './findLastedCoInMergedCell';
import { findTableCellElement } from './findTableCellElement';
import { toggleCaret } from './toggleCaret';
import {
getSafeIdSelector,
isNodeOfType,
parseTableCells,
toArray,
} from 'roosterjs-content-model-dom';
import type {
ParsedTable,
SelectionChangedEvent,
SetDOMSelection,
TableCellCoordinate,
} from 'roosterjs-content-model-types';
const DOM_SELECTION_CSS_KEY = '_DOMSelection';
const HIDE_SELECTION_CSS_KEY = '_DOMSelectionHideSelection';
const IMAGE_ID = 'image';
const TABLE_ID = 'table';
const TRANSPARENT_SELECTION_CSS_RULE = 'background-color: transparent !important;';
const SELECTION_SELECTOR = '*::selection';
const DEFAULT_SELECTION_BORDER_COLOR = '#DB626C';
/**
* @internal
*/
export const setDOMSelection: SetDOMSelection = (core, selection, skipSelectionChangedEvent) => {
const existingSelection = core.api.getDOMSelection(core);
if (existingSelection && selection && areSameSelections(existingSelection, selection)) {
return;
}
// We are applying a new selection, so we don't need to apply cached selection in DOMEventPlugin.
// Set skipReselectOnFocus to skip this behavior
const skipReselectOnFocus = core.selection.skipReselectOnFocus;
const doc = core.physicalRoot.ownerDocument;
const isDarkMode = core.lifecycle.isDarkMode;
core.selection.skipReselectOnFocus = true;
core.api.setEditorStyle(core, DOM_SELECTION_CSS_KEY, null /*cssRule*/);
core.api.setEditorStyle(core, HIDE_SELECTION_CSS_KEY, null /*cssRule*/);
toggleCaret(core, false /* hide */);
try {
switch (selection?.type) {
case 'image':
const image = selection.image;
core.selection.selection = selection;
const imageSelectionColor = isDarkMode
? core.selection.imageSelectionBorderColorDark
: core.selection.imageSelectionBorderColor;
core.api.setEditorStyle(
core,
DOM_SELECTION_CSS_KEY,
`outline-style:solid!important; outline-color:${
imageSelectionColor || DEFAULT_SELECTION_BORDER_COLOR
}!important;`,
[getSafeIdSelector(ensureUniqueId(image, IMAGE_ID))]
);
core.api.setEditorStyle(
core,
HIDE_SELECTION_CSS_KEY,
TRANSPARENT_SELECTION_CSS_RULE,
[SELECTION_SELECTOR]
);
setRangeSelection(doc, image, false /* collapse */);
break;
case 'table':
const { table, firstColumn, firstRow, lastColumn, lastRow } = selection;
const parsedTable = parseTableCells(selection.table);
let firstCell = {
row: Math.min(firstRow, lastRow),
col: Math.min(firstColumn, lastColumn),
cell: <HTMLTableCellElement | null>null,
};
let lastCell = {
row: Math.max(firstRow, lastRow),
col: Math.max(firstColumn, lastColumn),
};
firstCell = findTableCellElement(parsedTable, firstCell) || firstCell;
lastCell = findLastedCoInMergedCell(parsedTable, lastCell) || lastCell;
if (
isNaN(firstCell.row) ||
isNaN(firstCell.col) ||
isNaN(lastCell.row) ||
isNaN(lastCell.col)
) {
return;
}
selection = {
type: 'table',
table,
firstRow: firstCell.row,
firstColumn: firstCell.col,
lastRow: lastCell.row,
lastColumn: lastCell.col,
};
const tableId = ensureUniqueId(table, TABLE_ID);
const tableSelector = getSafeIdSelector(tableId);
const tableSelectors =
firstCell.row == 0 &&
firstCell.col == 0 &&
lastCell.row == parsedTable.length - 1 &&
lastCell.col == (parsedTable[lastCell.row]?.length ?? 0) - 1
? [tableSelector, `${tableSelector} *`]
: handleTableSelected(
parsedTable,
tableSelector,
table,
firstCell,
lastCell
);
core.selection.selection = selection;
const tableSelectionColor = isDarkMode
? core.selection.tableCellSelectionBackgroundColorDark
: core.selection.tableCellSelectionBackgroundColor;
core.api.setEditorStyle(
core,
DOM_SELECTION_CSS_KEY,
`background-color:${tableSelectionColor}!important;`,
tableSelectors
);
core.api.setEditorStyle(
core,
HIDE_SELECTION_CSS_KEY,
TRANSPARENT_SELECTION_CSS_RULE,
[SELECTION_SELECTOR]
);
toggleCaret(core, true /* hide */);
const nodeToSelect = firstCell.cell?.firstElementChild || firstCell.cell;
Eif (nodeToSelect) {
setRangeSelection(
doc,
(nodeToSelect as HTMLElement) || undefined,
true /* collapse */
);
}
break;
case 'range':
addRangeToSelection(doc, selection.range, selection.isReverted);
core.selection.selection = core.domHelper.hasFocus() ? null : selection;
break;
default:
core.selection.selection = null;
break;
}
} finally {
core.selection.skipReselectOnFocus = skipReselectOnFocus;
}
if (!skipSelectionChangedEvent) {
const eventData: SelectionChangedEvent = {
eventType: 'selectionChanged',
newSelection: selection,
};
core.api.triggerEvent(core, eventData, true /*broadcast*/);
}
};
function handleTableSelected(
parsedTable: ParsedTable,
tableSelector: string,
table: HTMLTableElement,
firstCell: TableCellCoordinate,
lastCell: TableCellCoordinate
) {
const selectors: string[] = [];
// Get whether table has thead, tbody or tfoot, then Set the start and end of each of the table children,
// so we can build the selector according the element between the table and the row.
let cont = 0;
const indexes = toArray(table.childNodes)
.filter(
(node): node is HTMLTableSectionElement =>
['THEAD', 'TBODY', 'TFOOT'].indexOf(
isNodeOfType(node, 'ELEMENT_NODE') ? node.tagName : ''
) > -1
)
.map(node => {
const result = {
el: node.tagName,
start: cont,
end: node.childNodes.length + cont,
};
cont = result.end;
return result;
});
parsedTable.forEach((row, rowIndex) => {
let tdCount = 0;
//Get current TBODY/THEAD/TFOOT
const midElement = indexes.filter(ind => ind.start <= rowIndex && ind.end > rowIndex)[0];
const middleElSelector = midElement ? '>' + midElement.el + '>' : '>';
const currentRow =
midElement && rowIndex + 1 >= midElement.start
? rowIndex + 1 - midElement.start
: rowIndex + 1;
for (let cellIndex = 0; cellIndex < row.length; cellIndex++) {
const cell = row[cellIndex];
if (typeof cell == 'object') {
tdCount++;
if (
rowIndex >= firstCell.row &&
rowIndex <= lastCell.row &&
cellIndex >= firstCell.col &&
cellIndex <= lastCell.col
) {
const selector = `${tableSelector}${middleElSelector} tr:nth-child(${currentRow})>${cell.tagName}:nth-child(${tdCount})`;
selectors.push(selector, selector + ' *');
}
}
}
});
return selectors;
}
function setRangeSelection(doc: Document, element: HTMLElement | undefined, collapse: boolean) {
if (element && doc.contains(element)) {
const range = doc.createRange();
let isReverted: boolean | undefined = undefined;
range.selectNode(element);
if (collapse) {
range.collapse();
} else {
const selection = doc.defaultView?.getSelection();
const range = selection && selection.rangeCount > 0 && selection.getRangeAt(0);
Iif (selection && range) {
isReverted =
selection.focusNode != range.endContainer ||
selection.focusOffset != range.endOffset;
}
}
addRangeToSelection(doc, range, isReverted);
}
}
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