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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 | 11x 11x 34x 47x 13x 2x 13x 13x 11x 2x 2x 2x 13x 13x 13x 2x 11x | import { LifecycleHooks } from "../../virtual-dom/interfaces";
const UpdateTrackerMixin = Base =>
class UpdateTracker extends Base implements LifecycleHooks {
didMountCallback () {
console.log('Mounted callback: ', this.constructor.name);
}
willUpdateCallback?: () => void;
didUpdateCallback?: () => void;
willUnmountCallback?: () => void;
/**
* The set of children nodes that are removed every time of one them gets mounted/updated to
* allow to call the respective callback after in the parent after the children have been mounted/updated
*/
private _childrenToUpdate: Set<Node> = undefined;
private _initializeChildrenToUpdate() {
if (this.adoptedChildren.size > 0 &&
this._childrenToUpdate === undefined) {
this._childrenToUpdate = new Set<Node>(this.adoptedChildren);
}
}
protected willMount() {
this._initializeChildrenToUpdate();
}
protected async didMount() {
if (this.adoptedChildren.size == 0) { // It is a leaf node
this._notifyDidMount();
}
}
protected childDidMount(child: Node, callback: Function) {
this._childrenToUpdate.delete(child);
if (this._childrenToUpdate.size === 0) { // Copy the children that need to be removed when updated
this._notifyDidMount();
}
}
private _notifyDidMount() {
this.callAttributesChange();
this.didMountCallback?.();
if (this.adoptingParent !== null) { // Let the adopting parent know that the child was mounted/updated
this.adoptingParent.childDidMount(this);
}
}
protected willUpdate() {
this._initializeChildrenToUpdate();
}
protected async didUpdate() {
if (this.adoptedChildren.size == 0) { // It is a leaf node
this._notifyDidUpdate();
}
}
protected childDidUpdate(child: Node, callback: Function) {
this._childrenToUpdate.delete(child);
Eif (this._childrenToUpdate.size === 0) { // Copy the children that need to be removed when updated
this._notifyDidUpdate();
}
}
private _notifyDidUpdate() {
this.callAttributesChange();
this.didUpdateCallback?.();
if (this.adoptingParent !== null) { // Let the adopting parent know that the child was mounted/updated
this.adoptingParent.childDidUpdate(this);
}
}
}
export default UpdateTrackerMixin; |