third_party/web-animations-js/sources/src/group-constructors.js

   1 // Copyright 2014 Google Inc. All rights reserved.
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 //     You may obtain a copy of the License at
   6 //
   7 // http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 //     See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 (function(shared, scope, testing) {
  16
  17   function constructor(children, timingInput) {
  18     this.children = children || [];
  19     this._timing = shared.normalizeTimingInput(timingInput, true);
  20     this.timing = shared.makeTiming(timingInput, true);
  21
  22     if (this._timing.duration === 'auto')
  23       this._timing.duration = this.activeDuration;
  24   }
  25
  26   window.AnimationSequence = function() {
  27     constructor.apply(this, arguments);
  28   };
  29
  30   window.AnimationGroup = function() {
  31     constructor.apply(this, arguments);
  32   };
  33
  34   window.AnimationSequence.prototype = {
  35     get activeDuration() {
  36       var total = 0;
  37       this.children.forEach(function(child) {
  38         total += scope.groupChildDuration(child);
  39       });
  40       return Math.max(total, 0);
  41     }
  42   };
  43
  44   window.AnimationGroup.prototype = {
  45     get activeDuration() {
  46       var max = 0;
  47       this.children.forEach(function(child) {
  48         max = Math.max(max, scope.groupChildDuration(child));
  49       });
  50       return max;
  51     }
  52   };
  53
  54   scope.newUnderlyingPlayerForGroup = function(group) {
  55     var underlyingPlayer;
  56     var ticker = function(tf) {
  57       var player = underlyingPlayer._wrapper;
  58       if (!player.source)
  59         return;
  60       if (tf == null) {
  61         player._removePlayers();
  62         return;
  63       }
  64       if (player.startTime === null)
  65         return;
  66
  67       player._updateChildren();
  68     };
  69
  70     underlyingPlayer = scope.timeline.play(new scope.Animation(null, ticker, group._timing));
  71     return underlyingPlayer;
  72   };
  73
  74   scope.bindPlayerForGroup = function(player) {
  75     player._player._wrapper = player;
  76     player._isGroup = true;
  77     scope.awaitStartTime(player);
  78     player._updateChildren();
  79   };
  80
  81
  82 })(webAnimationsShared, webAnimationsNext, webAnimationsTesting);