<!DOCTYPE html>
<html>
<!--
Copyright 2008 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<!--
Author: attila@google.com (Attila Bodis)
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Unit Tests - goog.ui.Control</title>
<script src="../base.js"></script>
<script>
goog.require('goog.dom');
goog.require('goog.dom.classlist');
goog.require('goog.events');
goog.require('goog.events.BrowserEvent.MouseButton');
goog.require('goog.events.KeyCodes');
goog.require('goog.object');
goog.require('goog.style');
goog.require('goog.testing.ExpectedFailures');
goog.require('goog.testing.events');
goog.require('goog.testing.jsunit');
goog.require('goog.ui.Component.EventType');
goog.require('goog.ui.Component.State');
goog.require('goog.ui.Control');
goog.require('goog.ui.ControlRenderer');
goog.require('goog.ui.registry');
goog.require('goog.userAgent');
</script>
</head>
<body>
<div id="sandbox"></div>
<script>
// Disabled due to problems on farm.
var testFocus = false;
var control;
var ALL_EVENTS = goog.object.getValues(goog.ui.Component.EventType);
var events = {};
var expectedFailures = new goog.testing.ExpectedFailures();
var sandbox = document.getElementById('sandbox');
/**
* A dummy renderer, for testing purposes.
* @constructor
* @extends {goog.ui.ControlRenderer}
*/
function TestRenderer() {
goog.ui.ControlRenderer.call(this);
}
goog.inherits(TestRenderer, goog.ui.ControlRenderer);
/**
* Initializes the testcase prior to execution.
*/
function setUp() {
control = new goog.ui.Control('Hello');
control.setDispatchTransitionEvents(goog.ui.Component.State.ALL, true);
goog.events.listen(control, ALL_EVENTS, countEvent);
}
/**
* Cleans up after executing the testcase.
*/
function tearDown() {
control.dispose();
expectedFailures.handleTearDown();
goog.dom.removeChildren(sandbox);
resetEventCount();
}
/**
* Resets the global counter for events dispatched by test objects.
*/
function resetEventCount() {
goog.object.clear(events);
}
/**
* Increments the global counter for events of this type.
* @param {goog.events.Event} e Event to count.
*/
function countEvent(e) {
var type = e.type;
var target = e.target;
if (!events[target]) {
events[target] = {};
}
if (events[target][type]) {
events[target][type]++;
} else {
events[target][type] = 1;
}
}
/**
* Returns the number of times test objects dispatched events of the given
* type since the global counter was last reset.
* @param {goog.ui.Control} target Event target.
* @param {string} type Event type.
* @return {number} Number of events of this type.
*/
function getEventCount(target, type) {
return events[target] && events[target][type] || 0;
}
/**
* Returns true if no events were dispatched since the last reset.
* @return {boolean} Whether no events have been dispatched since the last
* reset.
*/
function noEventsDispatched() {
return !events || goog.object.isEmpty(events);
}
/**
* Returns the number of event listeners created by the control.
* @param {goog.ui.Control} control Control whose event listers are to be
* counted.
* @return {number} Number of event listeners.
*/
function getListenerCount(control) {
return control.googUiComponentHandler_ ?
goog.object.getCount(control.getHandler().keys_) : 0;
}
/**
* Simulates a mousedown event on the given element, including focusing it.
* @param {Element} element Element on which to simulate mousedown.
* @param {goog.events.BrowserEvent.MouseButton=} opt_button Mouse button;
* defaults to {@code goog.events.BrowserEvent.MouseButton.LEFT}.
* @return {boolean} Whether the event was allowed to proceed.
*/
function fireMouseDownAndFocus(element, opt_button) {
var result = goog.testing.events.fireMouseDownEvent(element, opt_button);
if (result) {
// Browsers move focus for all buttons, not just the left button.
element.focus();
}
return result;
}
/**
* @return {boolean} Whether we're on Mac Safari 3.x.
*/
function isMacSafari3() {
return goog.userAgent.WEBKIT && goog.userAgent.MAC &&
!goog.userAgent.isVersionOrHigher('527');
}
/**
* Tests the {@link goog.ui.Control} constructor.
*/
function testConstructor() {
assertNotNull('Constructed control must not be null', control);
assertEquals('Content must have expected value', 'Hello',
control.getContent());
assertEquals('Renderer must default to the registered renderer',
goog.ui.registry.getDefaultRenderer(goog.ui.Control),
control.getRenderer());
var content = goog.dom.createDom('div', null, 'Hello',
goog.dom.createDom('b', null, 'World'));
var testRenderer = new TestRenderer();
var fakeDomHelper = {};
var foo = new goog.ui.Control(content, testRenderer, fakeDomHelper);
assertNotNull('Constructed object must not be null', foo);
assertEquals('Content must have expected value', content,
foo.getContent());
assertEquals('Renderer must have expected value', testRenderer,
foo.getRenderer());
assertEquals('DOM helper must have expected value', fakeDomHelper,
foo.getDomHelper());
foo.dispose();
}
/**
* Tests {@link goog.ui.Control#getHandler}.
*/
function testGetHandler() {
assertUndefined('Event handler must be undefined before getHandler() ' +
'is called', control.googUiComponentHandler_);
var handler = control.getHandler();
assertNotNull('Event handler must not be null', handler);
assertEquals('getHandler() must return the same instance if called again',
handler, control.getHandler());
}
/**
* Tests {@link goog.ui.Control#isHandleMouseEvents}.
*/
function testIsHandleMouseEvents() {
assertTrue('Controls must handle their own mouse events by default',
control.isHandleMouseEvents());
}
/**
* Tests {@link goog.ui.Control#setHandleMouseEvents}.
*/
function testSetHandleMouseEvents() {
assertTrue('Control must handle its own mouse events by default',
control.isHandleMouseEvents());
control.setHandleMouseEvents(false);
assertFalse('Control must no longer handle its own mouse events',
control.isHandleMouseEvents());
control.setHandleMouseEvents(true);
assertTrue('Control must once again handle its own mouse events',
control.isHandleMouseEvents());
control.render(sandbox);
assertTrue('Rendered control must handle its own mouse events',
control.isHandleMouseEvents());
control.setHandleMouseEvents(false);
assertFalse('Rendered control must no longer handle its own mouse events',
control.isHandleMouseEvents());
control.setHandleMouseEvents(true);
assertTrue('Rendered control must once again handle its own mouse events',
control.isHandleMouseEvents());
}
/**
* Tests {@link goog.ui.Control#getKeyEventTarget}.
*/
function testGetKeyEventTarget() {
assertNull('Key event target of control without DOM must be null',
control.getKeyEventTarget());
control.createDom();
assertEquals('Key event target of control with DOM must be its element',
control.getElement(), control.getKeyEventTarget());
}
/**
* Test
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福兔迎祥2016-05-05参考一下，谢谢分享
