npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

polymer_0.5.0/bower_components/web-animations-js/src/player.js

+// 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(scope, testing) {
+
+  var sequenceNumber = 0;
+
+  var AnimationPlayerEvent = function(target, currentTime, timelineTime) {
+    this.target = target;
+    this.currentTime = currentTime;
+    this.timelineTime = timelineTime;
+
+    this.type = 'finish';
+    this.bubbles = false;
+    this.cancelable = false;
+    this.currentTarget = target;
+    this.defaultPrevented = false;
+    this.eventPhase = Event.AT_TARGET;
+    this.timeStamp = Date.now();
+  };
+
+  scope.Player = function(source) {
+    this._sequenceNumber = sequenceNumber++;
+    this._currentTime = 0;
+    this._startTime = null;
+    this.paused = false;
+    this._playbackRate = 1;
+    this._inTimeline = true;
+    this._finishedFlag = false;
+    this.onfinish = null;
+    this._finishHandlers = [];
+    this._source = source;
+    this._inEffect = this._source._update(0);
+    this._idle = true;
+    this._currentTimePending = false;
+  };
+
+  scope.Player.prototype = {
+    _ensureAlive: function() {
+      this._inEffect = this._source._update(this.currentTime);
+      if (!this._inTimeline && (this._inEffect || !this._finishedFlag)) {
+        this._inTimeline = true;
+        scope.timeline._players.push(this);
+      }
+    },
+    _tickCurrentTime: function(newTime, ignoreLimit) {
+      if (newTime != this._currentTime) {
+        this._currentTime = newTime;
+        if (this.finished && !ignoreLimit)
+          this._currentTime = this._playbackRate > 0 ? this._totalDuration : 0;
+        this._ensureAlive();
+      }
+    },
+    get currentTime() {
+      if (this._idle || this._currentTimePending)
+        return null;
+      return this._currentTime;
+    },
+    set currentTime(newTime) {
+      newTime = +newTime;
+      if (isNaN(newTime))
+        return;
+      scope.restart();
+      if (!this.paused && this._startTime != null) {
+        this._startTime = this._timeline.currentTime - newTime / this._playbackRate;
+      }
+      this._currentTimePending = false;
+      if (this._currentTime == newTime)
+        return;
+      this._tickCurrentTime(newTime, true);
+      scope.invalidateEffects();
+    },
+    get startTime() {
+      return this._startTime;
+    },
+    set startTime(newTime) {
+      newTime = +newTime;
+      if (isNaN(newTime))
+        return;
+      if (this.paused || this._idle)
+        return;
+      this._startTime = newTime;
+      this._tickCurrentTime((this._timeline.currentTime - this._startTime) * this.playbackRate);
+      scope.invalidateEffects();
+    },
+    get playbackRate() { return this._playbackRate; },
+    get finished() {
+      return !this._idle && (this._playbackRate > 0 && this._currentTime >= this._totalDuration ||
+          this._playbackRate < 0 && this._currentTime <= 0);
+    },
+    get _totalDuration() { return this._source._totalDuration; },
+    get playState() {
+      if (this._idle)
+        return 'idle';
+      if ((this._startTime == null && !this.paused && this.playbackRate != 0) || this._currentTimePending)
+        return 'pending';
+      if (this.paused)
+        return 'paused';
+      if (this.finished)
+        return 'finished';
+      return 'running';
+    },
+    play: function() {
+      this.paused = false;
+      if (this.finished || this._idle) {
+        this._currentTime = this._playbackRate > 0 ? 0 : this._totalDuration;
+        this._startTime = null;
+        scope.invalidateEffects();
+      }
+      this._finishedFlag = false;
+      scope.restart();
+      this._idle = false;
+      this._ensureAlive();
+    },
+    pause: function() {
+      if (!this.finished && !this.paused && !this._idle) {
+        this._currentTimePending = true;
+      }
+      this._startTime = null;
+      this.paused = true;
+    },
+    finish: function() {
+      if (this._idle)
+        return;
+      this.currentTime = this._playbackRate > 0 ? this._totalDuration : 0;
+      this._startTime = this._totalDuration - this.currentTime;
+      this._currentTimePending = false;
+    },
+    cancel: function() {
+      this._inEffect = false;
+      this._idle = true;
+      this.currentTime = 0;
+      this._startTime = null;
+    },
+    reverse: function() {
+      this._playbackRate *= -1;
+      this._startTime = null;
+      this.play();
+    },
+    addEventListener: function(type, handler) {
+      if (typeof handler == 'function' && type == 'finish')
+        this._finishHandlers.push(handler);
+    },
+    removeEventListener: function(type, handler) {
+      if (type != 'finish')
+        return;
+      var index = this._finishHandlers.indexOf(handler);
+      if (index >= 0)
+        this._finishHandlers.splice(index, 1);
+    },
+    _fireEvents: function(baseTime) {
+      var finished = this.finished;
+      if ((finished || this._idle) && !this._finishedFlag) {
+        var event = new AnimationPlayerEvent(this, this._currentTime, baseTime);
+        var handlers = this._finishHandlers.concat(this.onfinish ? [this.onfinish] : []);
+        setTimeout(function() {
+          handlers.forEach(function(handler) {
+            handler.call(event.target, event);
+          });
+        }, 0);
+      }
+      this._finishedFlag = finished;
+    },
+    _tick: function(timelineTime) {
+      if (!this._idle && !this.paused) {
+        if (this._startTime == null)
+          this.startTime = timelineTime - this._currentTime / this.playbackRate;
+        else if (!this.finished)
+          this._tickCurrentTime((timelineTime - this._startTime) * this.playbackRate);
+      }
+
+      this._currentTimePending = false;
+      this._fireEvents(timelineTime);
+      return !this._idle && (this._inEffect || !this._finishedFlag);
+    },
+  };
+
+  if (WEB_ANIMATIONS_TESTING) {
+    testing.Player = scope.Player;
+  }
+
+})(webAnimationsMinifill, webAnimationsTesting);