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// Copyright 2014 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
(function(shared, scope, testing) {
var disassociate = function(effect) {
effect._animation = undefined;
if (effect instanceof window.SequenceEffect || effect instanceof window.GroupEffect) {
for (var i = 0; i < effect.children.length; i++) {
disassociate(effect.children[i]);
}
}
};
scope.removeMulti = function(effects) {
var oldParents = [];
for (var i = 0; i < effects.length; i++) {
var effect = effects[i];
if (effect._parent) {
if (oldParents.indexOf(effect._parent) == -1) {
oldParents.push(effect._parent);
}
effect._parent.children.splice(effect._parent.children.indexOf(effect), 1);
effect._parent = null;
disassociate(effect);
} else if (effect._animation && (effect._animation.effect == effect)) {
effect._animation.cancel();
effect._animation.effect = new KeyframeEffect(null, []);
if (effect._animation._callback) {
effect._animation._callback._animation = null;
}
effect._animation._rebuildUnderlyingAnimation();
disassociate(effect);
}
}
for (i = 0; i < oldParents.length; i++) {
oldParents[i]._rebuild();
}
};
function KeyframeList(effectInput) {
this._frames = shared.normalizeKeyframes(effectInput);
}
scope.KeyframeEffect = function(target, effectInput, timingInput, id) {
this.target = target;
this._parent = null;
timingInput = shared.numericTimingToObject(timingInput);
this._timingInput = shared.cloneTimingInput(timingInput);
this._timing = shared.normalizeTimingInput(timingInput);
this.timing = shared.makeTiming(timingInput, false, this);
this.timing._effect = this;
if (typeof effectInput == 'function') {
shared.deprecated('Custom KeyframeEffect', '2015-06-22', 'Use KeyframeEffect.onsample instead.');
this._normalizedKeyframes = effectInput;
} else {
this._normalizedKeyframes = new KeyframeList(effectInput);
}
this._keyframes = effectInput;
this.activeDuration = shared.calculateActiveDuration(this._timing);
this._id = id;
return this;
};
scope.KeyframeEffect.prototype = {
getFrames: function() {
if (typeof this._normalizedKeyframes == 'function')
return this._normalizedKeyframes;
return this._normalizedKeyframes._frames;
},
set onsample(callback) {
if (typeof this.getFrames() == 'function') {
throw new Error('Setting onsample on custom effect KeyframeEffect is not supported.');
}
this._onsample = callback;
if (this._animation) {
this._animation._rebuildUnderlyingAnimation();
}
},
get parent() {
return this._parent;
},
clone: function() {
if (typeof this.getFrames() == 'function') {
throw new Error('Cloning custom effects is not supported.');
}
var clone = new KeyframeEffect(this.target, [], shared.cloneTimingInput(this._timingInput), this._id);
clone._normalizedKeyframes = this._normalizedKeyframes;
clone._keyframes = this._keyframes;
return clone;
},
remove: function() {
scope.removeMulti([this]);
}
};
var originalElementAnimate = Element.prototype.animate;
Element.prototype.animate = function(effectInput, options) {
var id = '';
if (options && options.id) {
id = options.id;
}
return scope.timeline._play(new scope.KeyframeEffect(this, effectInput, options, id));
};
var nullTarget = document.createElementNS('http://www.w3.org/1999/xhtml', 'div');
scope.newUnderlyingAnimationForKeyframeEffect = function(keyframeEffect) {
if (keyframeEffect) {
var target = keyframeEffect.target || nullTarget;
var keyframes = keyframeEffect._keyframes;
if (typeof keyframes == 'function') {
keyframes = [];
}
var options = keyframeEffect._timingInput;
options.id = keyframeEffect._id;
} else {
var target = nullTarget;
var keyframes = [];
var options = 0;
}
return originalElementAnimate.apply(target, [keyframes, options]);
};
// TODO: Remove this once we remove support for custom KeyframeEffects.
scope.bindAnimationForKeyframeEffect = function(animation) {
if (animation.effect && typeof animation.effect._normalizedKeyframes == 'function') {
scope.bindAnimationForCustomEffect(animation);
}
};
var pendingGroups = [];
scope.awaitStartTime = function(groupAnimation) {
if (groupAnimation.startTime !== null || !groupAnimation._isGroup)
return;
if (pendingGroups.length == 0) {
requestAnimationFrame(updatePendingGroups);
}
pendingGroups.push(groupAnimation);
};
function updatePendingGroups() {
var updated = false;
while (pendingGroups.length) {
var group = pendingGroups.shift();
group._updateChildren();
updated = true;
}
return updated;
}
var originalGetComputedStyle = window.getComputedStyle;
Object.defineProperty(window, 'getComputedStyle', {
configurable: true,
enumerable: true,
value: function() {
scope.timeline._updateAnimationsPromises();
var result = originalGetComputedStyle.apply(this, arguments);
if (updatePendingGroups())
result = originalGetComputedStyle.apply(this, arguments);
scope.timeline._updateAnimationsPromises();
return result;
},
});
window.KeyframeEffect = scope.KeyframeEffect;
window.Element.prototype.getAnimations = function() {
return document.timeline.getAnimations().filter(function(animation) {
return animation.effect !== null && animation.effect.target == this;
}.bind(this));
};
}(webAnimationsShared, webAnimationsNext, webAnimationsTesting));
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