Support to repeat one song in Audio Player.

ui/file_manager/audio_player/elements/audio_player.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 Polymer({
   is: 'audio-player',
 
   listeners: {
     'toggle-pause-event': 'onTogglePauseEvent_',
     'small-forward-skip-event': 'onSmallForwardSkipEvent_',
@@ skipping 23 matching lines @@
 
     /**
      * Whether the shuffle button is ON.
      */
     shuffle: {
       type: Boolean,
       notify: true
     },
 
     /**
-     * Whether the repeat button is ON.
+     * What mode the repeat button idicates.
+     * repeat-modes can be "no-repeat", "repeat-all", "repeat-one".
      */
-    repeat: {
-      type: Boolean,
+    repeatMode: {
+      type: String,
       notify: true
     },
 
     /**
      * The audio volume. 0 is silent, and 100 is maximum loud.
      */
     volume: {
       type: Number,
       notify: true
     },
@@ skipping 158 matching lines @@
   onControllerPreviousClicked: function() {
     this.advance_(false /* forward */, true /* repeat */);
   },
 
   /**
    * Invoked when the playback in the audio element is ended.
    * This handler is registered in this.ready().
    */
   onAudioEnded: function() {
     this.playcount++;
-    this.advance_(true /* forward */, this.repeat);
+
+    if(this.repeatMode === "repeat-one") {
+      this.playing = true;
+      this.$.audio.currentTime = 0;
+      return;
+    }
+    this.advance_(true /* forward */, this.repeatMode === "repeat-all");
   },
 
   /**
    * Invoked when the playback in the audio element gets error.
    * This handler is registered in this.ready().
    */
   onAudioError: function() {
-    this.scheduleAutoAdvance_(true /* forward */, this.repeat);
+    if(this.repeatMode === "repeat-one") {
+      this.playing = false;
+      return;
+    }
+    this.scheduleAutoAdvance_(
+        true /* forward */, this.repeatMode === "repeat-all");
   },
 
   /**
    * Invoked when the time of playback in the audio element is updated.
    * This handler is registered in this.ready().
    * @private
    */
   onAudioStatusUpdate_: function() {
     this.time = (this.lastAudioUpdateTime_ = this.$.audio.currentTime * 1000);
     this.duration = this.$.audio.duration * 1000;
@@ skipping 15 matching lines @@
     // Changes the current time back to the beginning, regardless of the current
     // status (playing or paused).
     this.$.audio.currentTime = 0;
     this.time = 0;
     this.$.audio.play();
   },
 
   /**
    * Goes to the previous or the next track.
    * @param {boolean} forward True if next, false if previous.
-   * @param {boolean} repeat True if repeat-mode is enabled. False otherwise.
+   * @param {boolean} repeat True if repeat-mode is "repeat-all". False
+   *     "no-repeat".
    * @private
    */
   advance_: function(forward, repeat) {
     this.cancelAutoAdvance_();
 
     var nextTrackIndex = this.$.trackList.getNextTrackIndex(forward, true);
     var isNextTrackAvailable =
         (this.$.trackList.getNextTrackIndex(forward, repeat) !== -1);
 
     this.playing = isNextTrackAvailable;
@@ skipping 205 matching lines @@
   },
 
   /**
    * Big skip backword.
    * @private
    */
   onBigBackwordSkipEvent_: function(event) {
     this.$.audioController.bigSkip(false);
   },
 });