84 lines
3.2 KiB
JavaScript
84 lines
3.2 KiB
JavaScript
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'use strict';
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/**
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* @license Angular v<unknown>
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* (c) 2010-2022 Google LLC. https://angular.io/
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* License: MIT
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*/
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Zone.__load_patch('ResizeObserver', (global, Zone, api) => {
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const ResizeObserver = global['ResizeObserver'];
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if (!ResizeObserver) {
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return;
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}
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const resizeObserverSymbol = api.symbol('ResizeObserver');
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api.patchMethod(global, 'ResizeObserver', (delegate) => (self, args) => {
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const callback = args.length > 0 ? args[0] : null;
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if (callback) {
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args[0] = function (entries, observer) {
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const zones = {};
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const currZone = Zone.current;
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for (let entry of entries) {
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let zone = entry.target[resizeObserverSymbol];
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if (!zone) {
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zone = currZone;
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}
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let zoneEntriesInfo = zones[zone.name];
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if (!zoneEntriesInfo) {
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zones[zone.name] = zoneEntriesInfo = { entries: [], zone: zone };
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}
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zoneEntriesInfo.entries.push(entry);
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}
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Object.keys(zones).forEach(zoneName => {
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const zoneEntriesInfo = zones[zoneName];
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if (zoneEntriesInfo.zone !== Zone.current) {
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zoneEntriesInfo.zone.run(callback, this, [zoneEntriesInfo.entries, observer], 'ResizeObserver');
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}
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else {
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callback.call(this, zoneEntriesInfo.entries, observer);
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}
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});
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};
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}
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return args.length > 0 ? new ResizeObserver(args[0]) : new ResizeObserver();
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});
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api.patchMethod(ResizeObserver.prototype, 'observe', (delegate) => (self, args) => {
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const target = args.length > 0 ? args[0] : null;
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if (!target) {
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return delegate.apply(self, args);
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}
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let targets = self[resizeObserverSymbol];
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if (!targets) {
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targets = self[resizeObserverSymbol] = [];
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}
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targets.push(target);
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target[resizeObserverSymbol] = Zone.current;
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return delegate.apply(self, args);
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});
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api.patchMethod(ResizeObserver.prototype, 'unobserve', (delegate) => (self, args) => {
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const target = args.length > 0 ? args[0] : null;
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if (!target) {
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return delegate.apply(self, args);
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}
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let targets = self[resizeObserverSymbol];
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if (targets) {
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for (let i = 0; i < targets.length; i++) {
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if (targets[i] === target) {
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targets.splice(i, 1);
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break;
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}
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}
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}
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target[resizeObserverSymbol] = undefined;
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return delegate.apply(self, args);
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});
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api.patchMethod(ResizeObserver.prototype, 'disconnect', (delegate) => (self, args) => {
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const targets = self[resizeObserverSymbol];
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if (targets) {
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targets.forEach((target) => {
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target[resizeObserverSymbol] = undefined;
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});
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self[resizeObserverSymbol] = undefined;
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}
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return delegate.apply(self, args);
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});
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});
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