8a47b48912
This work is needed in preparation for turning tokens into tree-shakable injectables. PR Close #32154
67 lines
2.2 KiB
TypeScript
67 lines
2.2 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {ɵgetDOM as getDOM} from '@angular/common';
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import {GetTestability, Testability, TestabilityRegistry, setTestabilityGetter, ɵglobal as global} from '@angular/core';
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export class BrowserGetTestability implements GetTestability {
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static init() { setTestabilityGetter(new BrowserGetTestability()); }
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addToWindow(registry: TestabilityRegistry): void {
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global['getAngularTestability'] = (elem: any, findInAncestors: boolean = true) => {
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const testability = registry.findTestabilityInTree(elem, findInAncestors);
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if (testability == null) {
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throw new Error('Could not find testability for element.');
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}
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return testability;
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};
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global['getAllAngularTestabilities'] = () => registry.getAllTestabilities();
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global['getAllAngularRootElements'] = () => registry.getAllRootElements();
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const whenAllStable = (callback: any /** TODO #9100 */) => {
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const testabilities = global['getAllAngularTestabilities']();
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let count = testabilities.length;
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let didWork = false;
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const decrement = function(didWork_: any /** TODO #9100 */) {
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didWork = didWork || didWork_;
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count--;
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if (count == 0) {
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callback(didWork);
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}
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};
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testabilities.forEach(function(testability: any /** TODO #9100 */) {
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testability.whenStable(decrement);
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});
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};
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if (!global['frameworkStabilizers']) {
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global['frameworkStabilizers'] = [];
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}
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global['frameworkStabilizers'].push(whenAllStable);
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}
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findTestabilityInTree(registry: TestabilityRegistry, elem: any, findInAncestors: boolean):
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Testability|null {
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if (elem == null) {
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return null;
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}
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const t = registry.getTestability(elem);
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if (t != null) {
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return t;
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} else if (!findInAncestors) {
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return null;
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}
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if (getDOM().isShadowRoot(elem)) {
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return this.findTestabilityInTree(registry, getDOM().getHost(elem), true);
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}
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return this.findTestabilityInTree(registry, getDOM().parentElement(elem), true);
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}
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}
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