sku-pg
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Skulpt is a Javascript implementation of Python 2.x. Python that runs in your browser!
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<html>
<!--
Copyright 2006 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.events.EventHandler</title>
<script src="../base.js"></script>
<script>
goog.require('goog.events');
goog.require('goog.events.EventHandler');
goog.require('goog.events.EventTarget');
goog.require('goog.testing.jsunit');
goog.require('goog.testing.recordFunction');
</script>
</head>
<body>
<div id="a"></div>
<div id="b"></div>
<div id="c"></div>
<div id="d"></div>
<script>
var a = document.getElementById('a');
var b = document.getElementById('b');
var c = document.getElementById('c');
var d = document.getElementById('d');
var eh;
var eh;
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());
}
</script>
</body>
</html>