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<!DOCTYPE html>
<html>
<body>
<script>
/* @const */ var EventTarget;
function setUp(){
EventTarget = cr.EventTarget;
}
function testFunctionListener() {
var fi = 0;
function f(e) {
fi++;
}
var gi = 0;
function g(e) {
gi++;
}
var et = new EventTarget;
et.addEventListener('f', f);
et.addEventListener('g', g);
// Adding again should not cause it to be called twice
et.addEventListener('f', f);
et.dispatchEvent(new Event('f'));
assertEquals(1, fi, 'Should have been called once');
assertEquals(0, gi);
et.removeEventListener('f', f);
et.dispatchEvent(new Event('f'));
assertEquals(1, fi, 'Should not have been called again');
et.dispatchEvent(new Event('g'));
assertEquals(1, gi, 'Should have been called once');
}
function testHandleEvent() {
var fi = 0;
var f = {
handleEvent: function(e) {
fi++;
}
};
var gi = 0;
var g = {
handleEvent: function(e) {
gi++;
}
};
var et = new EventTarget;
et.addEventListener('f', f);
et.addEventListener('g', g);
// Adding again should not cause it to be called twice
et.addEventListener('f', f);
et.dispatchEvent(new Event('f'));
assertEquals(1, fi, 'Should have been called once');
assertEquals(0, gi);
et.removeEventListener('f', f);
et.dispatchEvent(new Event('f'));
assertEquals(1, fi, 'Should not have been called again');
et.dispatchEvent(new Event('g'));
assertEquals(1, gi, 'Should have been called once');
}
function testPreventDefault() {
var i = 0;
function prevent(e) {
i++;
e.preventDefault();
}
var j = 0;
function pass(e) {
j++;
}
var et = new EventTarget;
et.addEventListener('test', pass);
assertTrue(et.dispatchEvent(new Event('test', {cancelable: true})));
assertEquals(1, j);
et.addEventListener('test', prevent);
console.log('NOW');
assertFalse(et.dispatchEvent(new Event('test', {cancelable: true})));
assertEquals(2, j);
assertEquals(1, i);
}
function testReturnFalse() {
var i = 0;
function prevent(e) {
i++;
return false;
}
var j = 0;
function pass(e) {
j++;
}
var et = new EventTarget;
et.addEventListener('test', pass);
assertTrue(et.dispatchEvent(new Event('test', {cancelable: true})));
assertEquals(1, j);
et.addEventListener('test', prevent);
assertFalse(et.dispatchEvent(new Event('test', {cancelable: true})));
assertEquals(2, j);
assertEquals(1, i);
}
</script>
</body>
</html>
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