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 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | 1x 1x 1x 157x 157x 157x 157x 157x 1x 155x 1x 113x 1x 486x 486x 281x 157x 287x 287x 287x 287x 287x 287x 287x 287x 287x 639x 639x 639x 9x 630x 179x 6x 6x 173x 624x 599x 5x 1x 4x 2x 2x 599x 5x 5x 5x 5x 20x 11x 9x 4x 20x 16x 16x 20x 287x 281x 7x 281x 5x 6x 1x 1x 157x | import { createDOMHelper } from '../../editor/core/DOMHelperImpl';
import {
findClosestBlockEntityContainer,
findClosestEntityWrapper,
isNodeOfType,
} from 'roosterjs-content-model-dom';
import type { DOMHelper, TextMutationObserver } from 'roosterjs-content-model-types';
import type { Mutation } from './MutationType';
class TextMutationObserverImpl implements TextMutationObserver {
private observer: MutationObserver;
private domHelper: DOMHelper;
constructor(
private contentDiv: HTMLDivElement,
private onMutation: (mutation: Mutation) => void
) {
this.observer = new MutationObserver(this.onMutationInternal);
this.domHelper = createDOMHelper(contentDiv);
}
startObserving() {
this.observer.observe(this.contentDiv, {
subtree: true,
childList: true,
attributes: true,
characterData: true,
});
}
stopObserving() {
this.observer.disconnect();
}
flushMutations(ignoreMutations?: boolean) {
const mutations = this.observer.takeRecords();
if (!ignoreMutations) {
this.onMutationInternal(mutations);
}
}
private onMutationInternal = (mutations: MutationRecord[]) => {
let canHandle = true;
let firstTarget: Node | null = null;
let lastTextChangeNode: Node | null = null;
let addedNodes: Node[] = [];
let removedNodes: Node[] = [];
let reconcileText = false;
const ignoredNodes = new Set<Node>();
const includedNodes = new Set<Node>();
for (let i = 0; i < mutations.length && canHandle; i++) {
const mutation = mutations[i];
const target = mutation.target;
if (ignoredNodes.has(target)) {
continue;
} else if (!includedNodes.has(target)) {
if (
!this.domHelper.isNodeInEditor(target) ||
findClosestEntityWrapper(target, this.domHelper) ||
findClosestBlockEntityContainer(target, this.domHelper)
) {
ignoredNodes.add(target);
continue;
} else {
includedNodes.add(target);
}
}
switch (mutation.type) {
case 'attributes':
if (this.domHelper.isNodeInEditor(target, true /*excludingSelf*/)) {
if (
mutation.attributeName == 'id' &&
isNodeOfType(target, 'ELEMENT_NODE')
) {
this.onMutation({ type: 'elementId', element: target });
} else if (
mutation.attributeName &&
isNodeOfType(target, 'ELEMENT_NODE') &&
(mutation.attributeName == 'src' ||
mutation.attributeName.indexOf('data-') == 0)
) {
this.onMutation({
type: 'attribute',
element: target,
attributeName: mutation.attributeName,
});
} else {
// We cannot handle attributes changes on editor content for now
canHandle = false;
}
}
break;
case 'characterData':
Iif (lastTextChangeNode && lastTextChangeNode != mutation.target) {
// Multiple text nodes got changed, we don't know how to handle it
canHandle = false;
} else {
lastTextChangeNode = mutation.target;
reconcileText = true;
}
break;
case 'childList':
if (!firstTarget) {
firstTarget = mutation.target;
} else if (firstTarget != mutation.target) {
canHandle = false;
}
if (canHandle) {
addedNodes = addedNodes.concat(Array.from(mutation.addedNodes));
removedNodes = removedNodes.concat(Array.from(mutation.removedNodes));
}
break;
}
}
if (canHandle) {
if (addedNodes.length > 0 || removedNodes.length > 0) {
this.onMutation({
type: 'childList',
addedNodes,
removedNodes,
});
}
if (reconcileText) {
this.onMutation({ type: 'text' });
}
} else {
this.onMutation({ type: 'unknown' });
}
};
}
/**
* @internal
*/
export function createTextMutationObserver(
contentDiv: HTMLDivElement,
onMutation: (mutation: Mutation) => void
): TextMutationObserver {
return new TextMutationObserverImpl(contentDiv, onMutation);
}
|