| // Copyright 2006 The Closure Library Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS-IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| goog.provide('goog.events.EventHandlerTest'); |
| goog.setTestOnly('goog.events.EventHandlerTest'); |
| |
| goog.require('goog.events'); |
| goog.require('goog.events.EventHandler'); |
| goog.require('goog.events.EventTarget'); |
| goog.require('goog.testing.jsunit'); |
| goog.require('goog.testing.recordFunction'); |
| |
| var a, b, c, d, eh; |
| |
| function setUpPage() { |
| a = document.getElementById('a'); |
| b = document.getElementById('b'); |
| c = document.getElementById('c'); |
| d = document.getElementById('d'); |
| } |
| |
| |
| function tearDown() { |
| goog.dispose(eh); |
| } |
| |
| function testEventHandlerClearsListeners() { |
| function tmp() {} |
| |
| goog.events.listen(a, 'click', tmp); |
| |
| assertEquals(1, goog.events.getListeners(a, 'click', false).length); |
| |
| eh = new goog.events.EventHandler(); |
| eh.listen(a, 'click'); |
| eh.listen(a, 'keypress'); |
| eh.listen(b, 'mouseover'); |
| eh.listen(c, 'mousedown'); |
| eh.listen(d, 'click'); |
| eh.listen(d, 'mousedown'); |
| |
| assertEquals(2, goog.events.getListeners(a, 'click', false).length); |
| assertEquals(1, goog.events.getListeners(a, 'keypress', false).length); |
| assertEquals(1, goog.events.getListeners(b, 'mouseover', false).length); |
| assertEquals(1, goog.events.getListeners(c, 'mousedown', false).length); |
| assertEquals(1, goog.events.getListeners(d, 'click', false).length); |
| assertEquals(1, goog.events.getListeners(d, 'mousedown', false).length); |
| |
| eh.unlisten(d, 'mousedown'); |
| |
| assertEquals(2, goog.events.getListeners(a, 'click', false).length); |
| assertEquals(1, goog.events.getListeners(a, 'keypress', false).length); |
| assertEquals(1, goog.events.getListeners(b, 'mouseover', false).length); |
| assertEquals(1, goog.events.getListeners(c, 'mousedown', false).length); |
| assertEquals(1, goog.events.getListeners(d, 'click', false).length); |
| assertEquals(0, goog.events.getListeners(d, 'mousedown', false).length); |
| |
| eh.dispose(); |
| |
| assertEquals(1, goog.events.getListeners(a, 'click', false).length); |
| assertEquals(0, goog.events.getListeners(a, 'keypress', false).length); |
| assertEquals(0, goog.events.getListeners(b, 'mouseover', false).length); |
| assertEquals(0, goog.events.getListeners(c, 'mousedown', false).length); |
| assertEquals(0, goog.events.getListeners(d, 'click', false).length); |
| assertEquals(0, goog.events.getListeners(d, 'mousedown', false).length); |
| |
| goog.events.unlisten(a, 'click', tmp); |
| assertEquals(0, goog.events.getListeners(a, 'click', false).length); |
| } |
| |
| function testListenArray() { |
| eh = new goog.events.EventHandler(); |
| |
| eh.listen(a, ['click', 'mousedown', 'mouseup']); |
| |
| assertEquals(1, goog.events.getListeners(a, 'click', false).length); |
| assertEquals(1, goog.events.getListeners(a, 'mousedown', false).length); |
| assertEquals(1, goog.events.getListeners(a, 'mouseup', false).length); |
| |
| eh.unlisten(a, ['click', 'mousedown', 'mouseup']); |
| |
| assertEquals(0, goog.events.getListeners(a, 'click', false).length); |
| assertEquals(0, goog.events.getListeners(a, 'mousedown', false).length); |
| assertEquals(0, goog.events.getListeners(a, 'mouseup', false).length); |
| |
| eh.listen(a, ['click', 'mousedown', 'mouseup']); |
| |
| assertEquals(1, goog.events.getListeners(a, 'click', false).length); |
| assertEquals(1, goog.events.getListeners(a, 'mousedown', false).length); |
| assertEquals(1, goog.events.getListeners(a, 'mouseup', false).length); |
| |
| eh.removeAll(); |
| |
| assertEquals(0, goog.events.getListeners(a, 'click', false).length); |
| assertEquals(0, goog.events.getListeners(a, 'mousedown', false).length); |
| assertEquals(0, goog.events.getListeners(a, 'mouseup', false).length); |
| } |
| |
| function testListenOnceRemovesListenerWhenFired() { |
| var target = new goog.events.EventTarget(); |
| eh = new goog.events.EventHandler(); |
| var handler = goog.testing.recordFunction(); |
| eh.listenOnce(target, 'click', handler); |
| |
| target.dispatchEvent('click'); |
| assertEquals('One event should have been dispatched', |
| 1, handler.getCallCount()); |
| |
| target.dispatchEvent('click'); |
| assertEquals('No event should have been dispatched', |
| 1, handler.getCallCount()); |
| } |
| |
| function testListenOnceListenerIsCleanedUp() { |
| var target = new goog.events.EventTarget(); |
| eh = new goog.events.EventHandler(); |
| var handler = goog.testing.recordFunction(); |
| eh.listenOnce(target, 'click', handler); |
| |
| eh.removeAll(); |
| |
| target.dispatchEvent('click'); |
| assertEquals(0, handler.getCallCount()); |
| } |
| |
| function testClearListenersWithListenOnceListenerRemoved() { |
| var target = new goog.events.EventTarget(); |
| eh = new goog.events.EventHandler(); |
| |
| var handler = goog.testing.recordFunction(); |
| eh.listenOnce(target, 'click', handler); |
| |
| assertNotNull(goog.events.getListener(target, 'click', handler, false, eh)); |
| |
| target.dispatchEvent('click'); |
| assertEquals('One event should have been dispatched', |
| 1, handler.getCallCount()); |
| |
| assertNull(goog.events.getListener(target, 'click', handler, false, eh)); |
| |
| eh.removeAll(); |
| |
| target.dispatchEvent('click'); |
| assertEquals('No event should have been dispatched', |
| 1, handler.getCallCount()); |
| } |
| |
| function testListenOnceArray() { |
| var target = new goog.events.EventTarget(); |
| |
| eh = new goog.events.EventHandler(); |
| var handler = goog.testing.recordFunction(); |
| eh.listenOnce(target, ['click', 'mousedown', 'mouseup'], handler); |
| |
| target.dispatchEvent('click'); |
| assertEquals('1 event should have been dispatched', |
| 1, handler.getCallCount()); |
| assertEquals('Should be a click event', |
| 'click', handler.getLastCall().getArgument(0).type); |
| |
| target.dispatchEvent('click'); |
| assertEquals('No event should be dispatched', |
| 1, handler.getCallCount()); |
| |
| target.dispatchEvent('mouseup'); |
| assertEquals('1 event should have been dispatched', |
| 2, handler.getCallCount()); |
| assertEquals('Should be a mouseup event', |
| 'mouseup', handler.getLastCall().getArgument(0).type); |
| |
| target.dispatchEvent('mouseup'); |
| assertEquals('No event should be dispatched', |
| 2, handler.getCallCount()); |
| |
| target.dispatchEvent('mousedown'); |
| assertEquals('1 event should have been dispatched', |
| 3, handler.getCallCount()); |
| assertEquals('Should be a mousedown event', |
| 'mousedown', handler.getLastCall().getArgument(0).type); |
| |
| target.dispatchEvent('mousedown'); |
| assertEquals('No event should be dispatched', |
| 3, handler.getCallCount()); |
| } |
| |
| function testListenUnlistenWithObjectHandler() { |
| var target = new goog.events.EventTarget(); |
| eh = new goog.events.EventHandler(); |
| var handlerObj = { |
| handleEvent: goog.testing.recordFunction() |
| }; |
| eh.listen(target, 'click', handlerObj); |
| |
| target.dispatchEvent('click'); |
| assertEquals('One event should have been dispatched', |
| 1, handlerObj.handleEvent.getCallCount()); |
| |
| target.dispatchEvent('click'); |
| assertEquals('One event should have been dispatched', |
| 2, handlerObj.handleEvent.getCallCount()); |
| |
| eh.unlisten(target, 'click', handlerObj); |
| target.dispatchEvent('click'); |
| assertEquals('No event should have been dispatched', |
| 2, handlerObj.handleEvent.getCallCount()); |
| } |
| |
| function testListenOnceWithObjectHandler() { |
| var target = new goog.events.EventTarget(); |
| eh = new goog.events.EventHandler(); |
| var handlerObj = { |
| handleEvent: goog.testing.recordFunction() |
| }; |
| eh.listenOnce(target, 'click', handlerObj); |
| |
| target.dispatchEvent('click'); |
| assertEquals('One event should have been dispatched', |
| 1, handlerObj.handleEvent.getCallCount()); |
| |
| target.dispatchEvent('click'); |
| assertEquals('No event should have been dispatched', |
| 1, handlerObj.handleEvent.getCallCount()); |
| } |
| |
| function testGetListenerCount() { |
| eh = new goog.events.EventHandler(); |
| assertEquals('0 listeners registered initially', 0, eh.getListenerCount()); |
| var target = new goog.events.EventTarget(); |
| eh.listen(target, 'click', goog.nullFunction, false); |
| eh.listen(target, 'click', goog.nullFunction, true); |
| assertEquals('2 listeners registered', 2, eh.getListenerCount()); |
| eh.unlisten(target, 'click', goog.nullFunction, true); |
| assertEquals('1 listener removed, 1 left', 1, eh.getListenerCount()); |
| eh.removeAll(); |
| assertEquals('all listeners removed', 0, eh.getListenerCount()); |
| } |