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<!doctype html>
<meta charset=utf-8>
<title>Tests for CSS-Transition events</title>
<link rel="help" href="https://drafts.csswg.org/css-transitions-2/#transition-events">
<script src="../testcommon.js"></script>
<body>
<script>
'use strict';
/**
* Helper class to record the elapsedTime member of each event.
* The EventWatcher class in testharness.js allows us to wait on
* multiple events in a certain order but only records the event
* parameters of the most recent event.
*/
function TransitionEventHandler(target) {
this.target = target;
this.target.ontransitionrun = function(evt) {
this.transitionrun = evt.elapsedTime;
}.bind(this);
this.target.ontransitionstart = function(evt) {
this.transitionstart = evt.elapsedTime;
}.bind(this);
this.target.ontransitionend = function(evt) {
this.transitionend = evt.elapsedTime;
}.bind(this);
}
TransitionEventHandler.prototype.clear = function() {
this.transitionrun = undefined;
this.transitionstart = undefined;
this.transitionend = undefined;
};
function setupTransition(t, transitionStyle) {
var div, watcher, handler, transition;
transitionStyle = transitionStyle || 'transition: margin-left 100s 100s';
div = addDiv(t, { style: transitionStyle });
watcher = new EventWatcher(t, div, [ 'transitionrun',
'transitionstart',
'transitionend' ]);
handler = new TransitionEventHandler(div);
flushComputedStyle(div);
div.style.marginLeft = '100px';
flushComputedStyle(div);
transition = div.getAnimations()[0];
return [transition, watcher, handler];
}
// On the next frame (i.e. when events are queued), whether or not the
// transition is still pending depends on the implementation.
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
return watcher.wait_for('transitionrun').then(function(evt) {
assert_equals(evt.elapsedTime, 0.0);
});
}, 'Idle -> Pending or Before');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
// Force the transition to leave the idle phase
transition.startTime = document.timeline.currentTime;
return watcher.wait_for('transitionrun').then(function(evt) {
assert_equals(evt.elapsedTime, 0.0);
});
}, 'Idle -> Before');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
// Seek to Active phase.
transition.currentTime = 100 * MS_PER_SEC;
transition.pause();
return watcher.wait_for([ 'transitionrun',
'transitionstart' ]).then(function(evt) {
assert_equals(handler.transitionrun, 0.0);
assert_equals(handler.transitionstart, 0.0);
});
}, 'Idle or Pending -> Active');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
// Seek to After phase.
transition.finish();
return watcher.wait_for([ 'transitionrun',
'transitionstart',
'transitionend' ]).then(function(evt) {
assert_equals(handler.transitionrun, 0.0);
assert_equals(handler.transitionstart, 0.0);
assert_equals(handler.transitionend, 100.0);
});
}, 'Idle or Pending -> After');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
return Promise.all([ watcher.wait_for('transitionrun'),
transition.ready ]).then(function() {
transition.currentTime = 100 * MS_PER_SEC;
return watcher.wait_for('transitionstart');
}).then(function() {
assert_equals(handler.transitionstart, 0.0);
});
}, 'Before -> Active');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
return Promise.all([ watcher.wait_for('transitionrun'),
transition.ready ]).then(function() {
// Seek to After phase.
transition.currentTime = 200 * MS_PER_SEC;
return watcher.wait_for([ 'transitionstart', 'transitionend' ]);
}).then(function(evt) {
assert_equals(handler.transitionstart, 0.0);
assert_equals(handler.transitionend, 100.0);
});
}, 'Before -> After');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
// Seek to Active phase.
transition.currentTime = 100 * MS_PER_SEC;
return watcher.wait_for([ 'transitionrun',
'transitionstart' ]).then(function(evt) {
// Seek to Before phase.
transition.currentTime = 0;
return watcher.wait_for('transitionend');
}).then(function(evt) {
assert_equals(evt.elapsedTime, 0.0);
});
}, 'Active -> Before');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
// Seek to Active phase.
transition.currentTime = 100 * MS_PER_SEC;
return watcher.wait_for([ 'transitionrun',
'transitionstart' ]).then(function(evt) {
// Seek to After phase.
transition.currentTime = 200 * MS_PER_SEC;
return watcher.wait_for('transitionend');
}).then(function(evt) {
assert_equals(evt.elapsedTime, 100.0);
});
}, 'Active -> After');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
// Seek to After phase.
transition.finish();
return watcher.wait_for([ 'transitionrun',
'transitionstart',
'transitionend' ]).then(function(evt) {
// Seek to Before phase.
transition.currentTime = 0;
return watcher.wait_for([ 'transitionstart', 'transitionend' ]);
}).then(function(evt) {
assert_equals(handler.transitionstart, 100.0);
assert_equals(handler.transitionend, 0.0);
});
}, 'After -> Before');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
// Seek to After phase.
transition.finish();
return watcher.wait_for([ 'transitionrun',
'transitionstart',
'transitionend' ]).then(function(evt) {
// Seek to Active phase.
transition.currentTime = 100 * MS_PER_SEC;
return watcher.wait_for('transitionstart');
}).then(function(evt) {
assert_equals(evt.elapsedTime, 100.0);
});
}, 'After -> Active');
promise_test(function(t) {
var [transition, watcher, handler] =
setupTransition(t, 'transition: margin-left 100s -50s');
return watcher.wait_for([ 'transitionrun',
'transitionstart' ]).then(function() {
assert_equals(handler.transitionrun, 50.0);
assert_equals(handler.transitionstart, 50.0);
transition.finish();
return watcher.wait_for('transitionend');
}).then(function(evt) {
assert_equals(evt.elapsedTime, 100.0);
});
}, 'Calculating the interval start and end time with negative start delay.');
promise_test(function(t) {
var [transition, watcher, handler] = setupTransition(t);
return watcher.wait_for('transitionrun').then(function(evt) {
// We can't set the end delay via generated effect timing.
// Because CSS-Transition use the AnimationEffectTimingReadOnly.
transition.effect = new KeyframeEffect(handler.target,
{ marginleft: [ '0px', '100px' ]},
{ duration: 100 * MS_PER_SEC,
endDelay: -50 * MS_PER_SEC });
// Seek to Before and play.
transition.cancel();
transition.play();
return watcher.wait_for('transitionstart');
}).then(function() {
assert_equals(handler.transitionstart, 0.0);
// Seek to After phase.
transition.finish();
return watcher.wait_for('transitionend');
}).then(function(evt) {
assert_equals(evt.elapsedTime, 50.0);
});
}, 'Calculating the interval start and end time with negative end delay.');
done();
</script>
</body>
</html>
|
