revert: fix(animations): ensure all child elements are rendered before running animations

This reverts commit cbe85a0893.

modules/@angular/core/src/animation/active_animation_players_map.ts

@@ -11,7 +11,7 @@ import {isPresent} from '../facade/lang';
 
 import {AnimationPlayer} from './animation_player';
 
-export class ViewAnimationMap {
+export class ActiveAnimationPlayersMap {
   private _map = new Map<any, {[key: string]: AnimationPlayer}>();
   private _allPlayers: AnimationPlayer[] = [];
 
@@ -25,9 +25,9 @@ export class ViewAnimationMap {
   }
 
   findAllPlayersByElement(element: any): AnimationPlayer[] {
-    var players: AnimationPlayer[] = [];
+    var players: any[] /** TODO #9100 */ = [];
     StringMapWrapper.forEach(
-        this._map.get(element), (player: AnimationPlayer) => players.push(player));
+        this._map.get(element), (player: any /** TODO #9100 */) => players.push(player));
     return players;
   }
 

modules/@angular/core/src/animation/animation_group_player.ts

@@ -14,8 +14,6 @@ import {AnimationPlayer} from './animation_player';
 export class AnimationGroupPlayer implements AnimationPlayer {
   private _subscriptions: Function[] = [];
   private _finished = false;
-  private _started = false;
-
   public parentPlayer: AnimationPlayer = null;
 
   constructor(private _players: AnimationPlayer[]) {
@@ -46,19 +44,9 @@ export class AnimationGroupPlayer implements AnimationPlayer {
     }
   }
 
-  init(): void { this._players.forEach(player => player.init()); }
-
   onDone(fn: Function): void { this._subscriptions.push(fn); }
 
-  hasStarted() { return this._started; }
-
-  play() {
-    if (!isPresent(this.parentPlayer)) {
-      this.init();
-    }
-    this._started = true;
-    this._players.forEach(player => player.play());
-  }
+  play() { this._players.forEach(player => player.play()); }
 
   pause(): void { this._players.forEach(player => player.pause()); }
 

modules/@angular/core/src/animation/animation_player.ts

@@ -15,8 +15,6 @@ import {scheduleMicroTask} from '../facade/lang';
  */
 export abstract class AnimationPlayer {
   abstract onDone(fn: Function): void;
-  abstract init(): void;
-  abstract hasStarted(): boolean;
   abstract play(): void;
   abstract pause(): void;
   abstract restart(): void;
@@ -33,7 +31,6 @@ export abstract class AnimationPlayer {
 
 export class NoOpAnimationPlayer implements AnimationPlayer {
   private _subscriptions: any[] /** TODO #9100 */ = [];
-  private _started = false;
   public parentPlayer: AnimationPlayer = null;
   constructor() { scheduleMicroTask(() => this._onFinish()); }
   /** @internal */
@@ -42,9 +39,7 @@ export class NoOpAnimationPlayer implements AnimationPlayer {
     this._subscriptions = [];
   }
   onDone(fn: Function): void { this._subscriptions.push(fn); }
-  hasStarted(): boolean { return this._started; }
-  init(): void {}
-  play(): void { this._started = true; }
+  play(): void {}
   pause(): void {}
   restart(): void {}
   finish(): void { this._onFinish(); }

modules/@angular/core/src/animation/animation_sequence_player.ts

@@ -15,7 +15,6 @@ export class AnimationSequencePlayer implements AnimationPlayer {
   private _activePlayer: AnimationPlayer;
   private _subscriptions: Function[] = [];
   private _finished = false;
-  private _started: boolean = false;
 
   public parentPlayer: AnimationPlayer = null;
 
@@ -55,19 +54,9 @@ export class AnimationSequencePlayer implements AnimationPlayer {
     }
   }
 
-  init(): void { this._players.forEach(player => player.init()); }
-
   onDone(fn: Function): void { this._subscriptions.push(fn); }
 
-  hasStarted() { return this._started; }
-
-  play(): void {
-    if (!isPresent(this.parentPlayer)) {
-      this.init();
-    }
-    this._started = true;
-    this._activePlayer.play();
-  }
+  play(): void { this._activePlayer.play(); }
 
   pause(): void { this._activePlayer.pause(); }