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| 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 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | 1x 1x 1x 286x 286x 286x 1x 286x 168x 286x 286x 286x 858x 286x 23x 263x 130x 130x 130x 130x 133x 3x 130x 262x 261x 3x 258x 244x 14x 14x 262x 2x 2x 2x 2x 2x 262x | import { isNodeOfType } from '../domUtils/isNodeOfType';
import { toArray } from '../domUtils/toArray';
import type { ContentModelDocumentWithPersistedCache } from '../modelApi/selection/iterateSelections';
import type {
ContentModelDocument,
DOMSelection,
ModelToDomBlockAndSegmentNode,
ModelToDomContext,
} from 'roosterjs-content-model-types';
/**
* Create DOM tree fragment from Content Model document
* @param doc Document object of the target DOM tree
* @param root Target node that will become the container of new DOM tree.
* When a DOM node with existing node is passed, it will be merged with content model so that unchanged blocks
* won't be touched.
* @param model The content model document to generate DOM tree from
* @param context The context object for Content Model to DOM conversion
* @returns The selection range created in DOM tree from this model, or null when there is no selection
*/
export function contentModelToDom(
doc: Document,
root: Node,
model: ContentModelDocument,
context: ModelToDomContext
): DOMSelection | null {
context.modelHandlers.blockGroupChildren(doc, root, model, context);
const range = extractSelectionRange(doc, context);
if (model.hasRevertedRangeSelection && range?.type == 'range') {
range.isReverted = true;
}
if (context.domIndexer && context.allowCacheElement) {
(model as ContentModelDocumentWithPersistedCache).persistCache = true;
}
root.normalize();
return range;
}
function extractSelectionRange(doc: Document, context: ModelToDomContext): DOMSelection | null {
const {
regularSelection: { start, end },
tableSelection,
imageSelection,
} = context;
let startPosition: { container: Node; offset: number } | undefined;
let endPosition: { container: Node; offset: number } | undefined;
if (imageSelection) {
return imageSelection;
} else if (
(startPosition = start && calcPosition(start)) &&
(endPosition = end && calcPosition(end))
) {
const range = doc.createRange();
range.setStart(startPosition.container, startPosition.offset);
range.setEnd(endPosition.container, endPosition.offset);
return {
type: 'range',
range,
isReverted: false,
};
} else if (tableSelection) {
return tableSelection;
} else {
return null;
}
}
function calcPosition(
pos: ModelToDomBlockAndSegmentNode
): { container: Node; offset: number } | undefined {
let result: { container: Node; offset: number } | undefined;
if (pos.block) {
if (!pos.segment) {
result = { container: pos.block, offset: 0 };
} else if (isNodeOfType(pos.segment, 'TEXT_NODE')) {
result = {
container: pos.segment,
offset: pos.offset ?? pos.segment.nodeValue?.length ?? 0,
};
} else Eif (pos.segment.parentNode) {
result = {
container: pos.segment.parentNode,
offset:
toArray(pos.segment.parentNode.childNodes as NodeListOf<Node>).indexOf(
pos.segment
) + 1,
};
}
}
if (result && isNodeOfType(result.container, 'DOCUMENT_FRAGMENT_NODE')) {
const childNodes = result.container.childNodes;
Iif (childNodes.length > result.offset) {
result = { container: childNodes[result.offset], offset: 0 };
} else Eif (result.container.lastChild) {
const container = result.container.lastChild;
result = {
container,
offset: isNodeOfType(container, 'TEXT_NODE')
? container.nodeValue?.length ?? 0
: container.childNodes.length,
};
} else {
result = undefined;
}
}
return result;
}
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