Avoid creating new events and formatting fixup

Move the duration update functionality so it happens inline instead of in a custom event. Add a test case. Clean up formatting inconsistencies.

@@ -398,12 +398,10 @@
               this.manifest.totalDuration = entry.duration;
             },
             'endlist': function() {
-              if(this.manifest.totalDuration === 0)
-              {
-                var calculatedDuration = 0,
-                  i;
-                for( i = 0; i < this.manifest.segments.length; i++) {
-                  if(this.manifest.segments[i].duration) {
+              var i, calculatedDuration = 0;
+              if (this.manifest.totalDuration === 0) {
+                for (i = 0; i < this.manifest.segments.length; i++) {
+                  if (this.manifest.segments[i].duration) {
                     calculatedDuration += this.manifest.segments[i].duration;
                   } else if (this.manifest.targetDuration > 0) {
                     calculatedDuration += this.manifest.targetDuration;

@@ -84,7 +84,6 @@ var
       srcUrl,
 
       segmentXhr,
-      onDurationUpdate,
       downloadPlaylist,
       fillBuffer;
 
@@ -155,10 +154,6 @@ var
       return bestVariant || sortedPlaylists[0];
     };
 
-    onDurationUpdate = function(value) {
-      player.duration(value);
-    };
-
     /**
      * Download an M3U8 and update the current manifest object. If the provided
      * URL is a master playlist, the default variant will be downloaded and
@@ -179,7 +174,6 @@ var
         if (xhr.readyState === 4) {
           // readystate DONE
           parser = new videojs.m3u8.Parser();
-          parser.on('durationUpdate', onDurationUpdate);
           parser.push(xhr.responseText);
 
           // master playlists
@@ -213,6 +207,10 @@ var
           // always start playback with the default rendition
           if (!player.hls.media) {
             player.hls.media = player.hls.master.playlists[0];
+            if (parser.manifest.totalDuration) {
+              // update the duration
+              player.duration(parser.manifest.totalDuration);
+            }
             player.trigger('loadedmanifest');
             player.trigger('loadedmetadata');
             return;
@@ -224,7 +222,12 @@ var
             downloadPlaylist(resolveUrl(srcUrl, playlist.uri));
           } else {
             player.hls.media = playlist;
+            if (parser.manifest.totalDuration) {
+              // update the duration
+              player.duration(parser.manifest.totalDuration);
             }
+          }
+
           player.trigger('loadedmanifest');
         }
       };

 {
   "allowCache": true,
+  "totalDuration": 0,
   "playlists": [{
     "attributes": {
       "PROGRAM-ID": 1,

@@ -108,6 +108,22 @@ test('loads the specified manifest URL on init', function() {
   strictEqual(player.hls.readyState(), 1, 'the readyState is HAVE_METADATA');
 });
 
+test('sets the duration if one is available on the playlist', function() {
+  var calls = 0;
+  player.duration = function(value) {
+    if (value === undefined) {
+      return 0;
+    }
+    calls++;
+  };
+  player.hls('manifest/media.m3u8');
+  videojs.mediaSources[player.currentSrc()].trigger({
+    type: 'sourceopen'
+  });
+
+  strictEqual(1, calls, 'duration is set');
+});
+
 test('starts downloading a segment on loadedmetadata', function() {
   player.hls('manifest/media.m3u8');
   player.buffered = function() {