angular-cn/modules/angular2/test/render/dom/events/event_manager_spec.js

146 lines
5.7 KiB
JavaScript

import {describe, ddescribe, it, iit, xit, xdescribe, expect, beforeEach, el} from 'angular2/test_lib';
import {EventManager, EventManagerPlugin, DomEventsPlugin} from 'angular2/src/render/dom/events/event_manager';
import {VmTurnZone} from 'angular2/src/core/zone/vm_turn_zone';
import {List, ListWrapper, Map, MapWrapper} from 'angular2/src/facade/collection';
import {DOM} from 'angular2/src/dom/dom_adapter';
export function main() {
var domEventPlugin;
beforeEach(() => {
domEventPlugin = new DomEventsPlugin();
});
describe('EventManager', () => {
it('should delegate event bindings to plugins', () => {
var element = el('<div></div>');
var handler = (e) => e;
var plugin = new FakeEventManagerPlugin(['click']);
var manager = new EventManager([plugin, domEventPlugin], new FakeVmTurnZone());
manager.addEventListener(element, 'click', handler);
expect(MapWrapper.get(plugin._nonBubbleEventHandlers, 'click')).toBe(handler);
});
it('should delegate bubbling events to plugins', () => {
var element = el('<div></div>');
var handler = (e) => e;
var plugin = new FakeEventManagerPlugin(['click']);
var manager = new EventManager([plugin, domEventPlugin], new FakeVmTurnZone());
manager.addEventListener(element, '^click', handler);
expect(MapWrapper.get(plugin._bubbleEventHandlers, 'click')).toBe(handler);
});
it('should delegate event bindings to the first plugin supporting the event', () => {
var element = el('<div></div>');
var clickHandler = (e) => e;
var dblClickHandler = (e) => e;
var plugin1= new FakeEventManagerPlugin(['dblclick']);
var plugin2 = new FakeEventManagerPlugin(['click', 'dblclick']);
var manager = new EventManager([plugin1, plugin2], new FakeVmTurnZone());
manager.addEventListener(element, 'click', clickHandler);
manager.addEventListener(element, 'dblclick', dblClickHandler);
expect(MapWrapper.contains(plugin1._nonBubbleEventHandlers, 'click')).toBe(false);
expect(MapWrapper.get(plugin2._nonBubbleEventHandlers, 'click')).toBe(clickHandler);
expect(MapWrapper.contains(plugin2._nonBubbleEventHandlers, 'dblclick')).toBe(false);
expect(MapWrapper.get(plugin1._nonBubbleEventHandlers, 'dblclick')).toBe(dblClickHandler);
});
it('should throw when no plugin can handle the event', () => {
var element = el('<div></div>');
var plugin = new FakeEventManagerPlugin(['dblclick']);
var manager = new EventManager([plugin], new FakeVmTurnZone());
expect(() => manager.addEventListener(element, 'click', null))
.toThrowError('No event manager plugin found for event click');
});
it('by default events are only caught on same element', () => {
var element = el('<div><div></div></div>');
var child = DOM.firstChild(element);
var dispatchedEvent = DOM.createMouseEvent('click');
var receivedEvent = null;
var handler = (e) => { receivedEvent = e; };
var manager = new EventManager([domEventPlugin], new FakeVmTurnZone());
manager.addEventListener(element, 'click', handler);
DOM.dispatchEvent(child, dispatchedEvent);
expect(receivedEvent).toBe(null);
});
it('bubbled events are caught when fired from a child', () => {
var element = el('<div><div></div></div>');
// Workaround for https://bugs.webkit.org/show_bug.cgi?id=122755
DOM.appendChild(DOM.defaultDoc().body, element);
var child = DOM.firstChild(element);
var dispatchedEvent = DOM.createMouseEvent('click');
var receivedEvent = null;
var handler = (e) => { receivedEvent = e; };
var manager = new EventManager([domEventPlugin], new FakeVmTurnZone());
manager.addEventListener(element, '^click', handler);
DOM.dispatchEvent(child, dispatchedEvent);
expect(receivedEvent).toBe(dispatchedEvent);
});
it('should add and remove global event listeners with correct bubbling', () => {
var element = el('<div><div></div></div>');
DOM.appendChild(DOM.defaultDoc().body, element);
var dispatchedEvent = DOM.createMouseEvent('click');
var receivedEvent = null;
var handler = (e) => { receivedEvent = e; };
var manager = new EventManager([domEventPlugin], new FakeVmTurnZone());
var remover = manager.addGlobalEventListener("document", '^click', handler);
DOM.dispatchEvent(element, dispatchedEvent);
expect(receivedEvent).toBe(dispatchedEvent);
receivedEvent = null;
remover();
DOM.dispatchEvent(element, dispatchedEvent);
expect(receivedEvent).toBe(null);
remover = manager.addGlobalEventListener("document", 'click', handler);
DOM.dispatchEvent(element, dispatchedEvent);
expect(receivedEvent).toBe(null);
});
});
}
class FakeEventManagerPlugin extends EventManagerPlugin {
_supports: List<string>;
_nonBubbleEventHandlers: Map;
_bubbleEventHandlers: Map;
constructor(supports: List<string>) {
super();
this._supports = supports;
this._nonBubbleEventHandlers = MapWrapper.create();
this._bubbleEventHandlers = MapWrapper.create();
}
supports(eventName: string): boolean {
return ListWrapper.contains(this._supports, eventName);
}
addEventListener(element, eventName: string, handler: Function, shouldSupportBubble: boolean) {
MapWrapper.set(shouldSupportBubble ? this._bubbleEventHandlers : this._nonBubbleEventHandlers,
eventName, handler);
return () => {MapWrapper.delete(shouldSupportBubble ? this._bubbleEventHandlers : this._nonBubbleEventHandlers,
eventName)};
}
}
class FakeVmTurnZone extends VmTurnZone {
constructor() {
super({enableLongStackTrace: false});
}
run(fn) {
fn();
}
runOutsideAngular(fn) {
return fn();
}
}