Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | 1x 1x 1x 1x 1x 2068x 4x 2064x 2064x 2064x 1213x 2064x 2064x 2064x 2064x 1213x 358x 855x 824x 31x 31x 31x 31x 31x 31x 31x 62x 24x 20x 4x 2x | import { isEntityElement } from '../../domUtils/entityUtils';
import { isNodeOfType } from '../../domUtils/isNodeOfType';
import { mergeNode } from './mergeNode';
import { removeUnnecessarySpan } from './removeUnnecessarySpan';
import type {
ModelToDomBlockAndSegmentNode,
ModelToDomContext,
} from 'roosterjs-content-model-types';
/**
* @internal
*/
export function optimize(root: Node, context: ModelToDomContext) {
/**
* Do no do any optimization to entity
*/
if (isEntityElement(root)) {
return;
}
removeUnnecessarySpan(root);
mergeNode(root);
for (let child = root.firstChild; child; child = child.nextSibling) {
optimize(child, context);
}
normalizeTextNode(root, context);
}
// Merge continuous text nodes into one single node (same with normalize()),
// and update selection and dom indexes
function normalizeTextNode(root: Node, context: ModelToDomContext) {
let lastText: Text | null = null;
let child: Node | null;
let next: Node | null;
const selection = context.regularSelection;
for (
child = root.firstChild, next = child ? child.nextSibling : null;
child;
child = next, next = child ? child.nextSibling : null
) {
if (!isNodeOfType(child, 'TEXT_NODE')) {
lastText = null;
} else if (!lastText) {
lastText = child;
} else {
const originalLength = lastText.nodeValue?.length ?? 0;
context.domIndexer?.onMergeText(lastText, child);
lastText.nodeValue += child.nodeValue ?? '';
Eif (selection) {
updateSelection(selection.start, lastText, child, originalLength);
updateSelection(selection.end, lastText, child, originalLength);
}
root.removeChild(child);
}
}
}
function updateSelection(
mark: ModelToDomBlockAndSegmentNode | undefined,
lastText: Text,
nextText: Text,
lastTextOriginalLength: number
) {
if (mark && mark.offset == undefined) {
if (mark.segment == lastText) {
mark.offset = lastTextOriginalLength;
} else if (mark.segment == nextText) {
mark.segment = lastText;
}
}
}
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