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import type { EditorCore, SnapshotSelection } from 'roosterjs-content-model-types';
import { getPath } from './getPath';
/**
* @internal
*/
export function createSnapshotSelection(core: EditorCore): SnapshotSelection {
const { physicalRoot, api } = core;
const selection = api.getDOMSelection(core);
// Normalize tables to ensure they have TBODY element between TABLE and TR so that the selection path will include correct values
if (selection?.type == 'range') {
const { startContainer, startOffset, endContainer, endOffset } = selection.range;
let isDOMChanged = normalizeTableTree(startContainer, physicalRoot);
if (endContainer != startContainer) {
isDOMChanged = normalizeTableTree(endContainer, physicalRoot) || isDOMChanged;
}
if (isDOMChanged) {
const newRange = physicalRoot.ownerDocument.createRange();
newRange.setStart(startContainer, startOffset);
newRange.setEnd(endContainer, endOffset);
api.setDOMSelection(
core,
{
type: 'range',
range: newRange,
isReverted: !!selection.isReverted,
},
true /*skipSelectionChangedEvent*/
);
}
}
switch (selection?.type) {
case 'image':
return {
type: 'image',
imageId: selection.image.id,
};
case 'table':
return {
type: 'table',
tableId: selection.table.id,
firstColumn: selection.firstColumn,
lastColumn: selection.lastColumn,
firstRow: selection.firstRow,
lastRow: selection.lastRow,
};
case 'range':
const range = selection.range;
return {
type: 'range',
start: getPath(range.startContainer, range.startOffset, physicalRoot),
end: getPath(range.endContainer, range.endOffset, physicalRoot),
isReverted: !!selection.isReverted,
};
default:
return {
type: 'range',
start: [],
end: [],
isReverted: false,
};
}
}
function normalizeTableTree(startNode: Node, root: Node) {
let node: Node | null = startNode;
let isDOMChanged = false;
while (node && root.contains(node)) {
if (isNodeOfType(node, 'ELEMENT_NODE') && isElementOfType(node, 'table')) {
isDOMChanged = normalizeTable(node) || isDOMChanged;
}
node = node.parentNode;
}
return isDOMChanged;
}
function normalizeTable(table: HTMLTableElement): boolean {
let isDOMChanged = false;
let tbody: HTMLTableSectionElement | null = null;
for (let child = table.firstChild; child; child = child.nextSibling) {
const tag = isNodeOfType(child, 'ELEMENT_NODE') ? child.tagName : null;
switch (tag) {
case 'TR':
if (!tbody) {
tbody = table.ownerDocument.createElement('tbody');
table.insertBefore(tbody, child);
}
tbody.appendChild(child);
child = tbody;
isDOMChanged = true;
break;
case 'TBODY':
if (tbody) {
moveChildNodes(tbody, child, true /*keepExistingChildren*/);
child.parentNode?.removeChild(child);
child = tbody;
isDOMChanged = true;
} else {
tbody = child as HTMLTableSectionElement;
}
break;
default:
tbody = null;
break;
}
}
const colgroups = table.querySelectorAll('colgroup');
const thead = table.querySelector('thead');
if (thead) {
colgroups.forEach(colgroup => {
if (!thead.contains(colgroup)) {
thead.appendChild(colgroup);
}
});
}
return isDOMChanged;
}
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