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<!DOCTYPE html>
<!--
Author: attila@google.com (Attila Bodis)
-->
<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.
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Unit Tests - goog.ui.registry</title>
<script src="../base.js"></script>
<script>
goog.require('goog.object');
goog.require('goog.testing.jsunit');
goog.require('goog.ui.decorate');
goog.require('goog.ui.registry');
</script>
</head>
<body>
<div id="x" class="fake-component-x"></div>
<div id="y" class="fake-component-y fake-component-x"></div>
<div id="z" class="fake-component-z"></div>
<div id="u"></div>
<script>
// Fake component and renderer implementations, for testing only.
// UnknownComponent has no default renderer or decorator registered.
function UnknownComponent() {
}
// FakeComponentX's default renderer is FakeRenderer. It also has a
// decorator.
function FakeComponentX() {
this.element = null;
}
FakeComponentX.prototype.decorate = function(element) {
this.element = element;
};
// FakeComponentY doesn't have an explicitly registered default
// renderer; it should inherit the default renderer from its superclass.
// It does have a decorator registered.
function FakeComponentY() {
FakeComponentX.call(this);
}
goog.inherits(FakeComponentY, FakeComponentX);
// FakeComponentZ is just another component. Its default renderer is
// FakeSingletonRenderer, but it has no decorator registered.
function FakeComponentZ() {
}
// FakeRenderer is a stateful renderer.
function FakeRenderer() {
}
// FakeSingletonRenderer is a stateless renderer that can be used as a
// singleton.
function FakeSingletonRenderer() {
}
FakeSingletonRenderer.instance_ = new FakeSingletonRenderer();
FakeSingletonRenderer.getInstance = function() {
return FakeSingletonRenderer.instance_;
};
function setUp() {
goog.ui.registry.setDefaultRenderer(FakeComponentX, FakeRenderer);
goog.ui.registry.setDefaultRenderer(FakeComponentZ,
FakeSingletonRenderer);
goog.ui.registry.setDecoratorByClassName('fake-component-x',
function() {
return new FakeComponentX();
});
goog.ui.registry.setDecoratorByClassName('fake-component-y',
function() {
return new FakeComponentY();
});
}
function tearDown() {
goog.ui.registry.reset();
}
function testDecorate() {
var dx = goog.ui.decorate(document.getElementById('x'));
assertTrue('Decorator for element with fake-component-x class must be ' +
'a FakeComponentX', dx instanceof FakeComponentX);
assertEquals('Element x must have been decorated',
document.getElementById('x'), dx.element);
var dy = goog.ui.decorate(document.getElementById('y'));
assertTrue('Decorator for element with fake-component-y class must be ' +
'a FakeComponentY', dy instanceof FakeComponentY);
assertEquals('Element y must have been decorated',
document.getElementById('y'), dy.element);
var dz = goog.ui.decorate(document.getElementById('z'));
assertNull('Decorator for element with unknown class must be null', dz);
var du = goog.ui.decorate(document.getElementById('u'));
assertNull('Decorator for element without CSS class must be null', du);
}
</script>
</body>
</html>
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