--- a/coffee/calls.coffee	Mon Apr 11 22:21:49 2016 +0800
+++ b/coffee/calls.coffee	Tue Apr 12 13:28:14 2016 +0800
@@ -53,6 +53,8 @@
     @listenTo(@model, 'change:local/audio/muted', @muteMic)
     @listenTo(@model, 'change:remote/audio/muted', @muteAudio)
 
+    @listenTo(@model, 'remove', @remove)
+
   updateLocal: ->
     if @model.has('local/stream/url')
       @updateVideo(@$local, @model.get('local/stream/url'))
@@ -104,11 +106,7 @@
 class Tram.CallsApp extends Backbone.View
   initialize: ->
     @listenTo(@collection, 'add', @onAdd)
-    @listenTo(@collection, 'remove', @onRemove)
 
   onAdd: (model) ->
     model.view = new Tram.CallView(model: model)
     @$el.append model.view.render().el
-
-  onRemove: (model) ->
-    model.view.remove()

--- a/js/calls.js	Mon Apr 11 22:21:49 2016 +0800
+++ b/js/calls.js	Tue Apr 12 13:28:14 2016 +0800
@@ -101,7 +101,8 @@
       this.listenTo(this.model, 'change:remote/stream/url', this.updateRemote);
       this.listenTo(this.model, 'change:local/video/muted', this.muteCam);
       this.listenTo(this.model, 'change:local/audio/muted', this.muteMic);
-      return this.listenTo(this.model, 'change:remote/audio/muted', this.muteAudio);
+      this.listenTo(this.model, 'change:remote/audio/muted', this.muteAudio);
+      return this.listenTo(this.model, 'remove', this.remove);
     };
 
     CallView.prototype.updateLocal = function() {
@@ -189,8 +190,7 @@
     }
 
     CallsApp.prototype.initialize = function() {
-      this.listenTo(this.collection, 'add', this.onAdd);
-      return this.listenTo(this.collection, 'remove', this.onRemove);
+      return this.listenTo(this.collection, 'add', this.onAdd);
     };
 
     CallsApp.prototype.onAdd = function(model) {
@@ -200,10 +200,6 @@
       return this.$el.append(model.view.render().el);
     };
 
-    CallsApp.prototype.onRemove = function(model) {
-      return model.view.remove();
-    };
-
     return CallsApp;
 
   })(Backbone.View);

--- a/js/calls.js.map	Mon Apr 11 22:21:49 2016 +0800
+++ b/js/calls.js.map	Tue Apr 12 13:28:14 2016 +0800
@@ -6,5 +6,5 @@
     "coffee/calls.coffee"
   ],
   "names": [],
-  "mappings": ";AAAA;AAAA,MAAA;;;EAAM,IAAI,CAAC;;;;;;;mBACT,WAAA,GAAa;;mBAEb,UAAA,GAAY,SAAA;MACV,IAAC,CAAA,EAAD,CAAI,qBAAJ,EAA2B,IAAC,CAAA,oBAA5B;aACA,IAAC,CAAA,EAAD,CAAI,sBAAJ,EAA4B,IAAC,CAAA,qBAA7B;IAFU;;mBAIZ,eAAA,GAAiB,SAAC,KAAD,EAAQ,KAAR;AACf,UAAA;MAAA,IAAG,IAAC,CAAA,GAAD,CAAK,KAAL,CAAH;QACE,GAAG,CAAC,eAAJ,CAAoB,IAAC,CAAA,GAAD,CAAK,KAAL,CAApB,EADF;;MAEA,MAAA,GAAS,IAAC,CAAA,GAAD,CAAK,KAAL;MACT,IAAG,MAAH;eACE,IAAC,CAAA,GAAD,CAAK,KAAL,EAAY,GAAG,CAAC,eAAJ,CAAoB,MAApB,CAAZ,EADF;OAAA,MAAA;eAGE,IAAC,CAAA,KAAD,CAAO,KAAP,EAHF;;IAJe;;mBASjB,oBAAA,GAAsB,SAAA;aACpB,IAAC,CAAA,eAAD,CAAiB,cAAjB,EAAiC,kBAAjC;IADoB;;mBAGtB,qBAAA,GAAuB,SAAA;aACrB,IAAC,CAAA,eAAD,CAAiB,eAAjB,EAAkC,mBAAlC;IADqB;;;;KAnBD,QAAQ,CAAC;;EAuB3B,IAAI,CAAC;;;;;;;oBACT,KAAA,GAAO,IAAI,CAAC;;;;KADW,QAAQ,CAAC;;EAI5B,IAAI,CAAC;;;;;;;uBACT,OAAA,GAAS;;uBACT,SAAA,GAAW;;uBACX,QAAA,GAAU,CAAA,CAAE,uBAAF,CAA0B,CAAC,IAA3B,CAAA;;uBACV,MAAA,GACE;MAAA,uBAAA,EAAyB,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,EAAgC,IAAhC;MAAH,CAAzB;MACA,yBAAA,EAA2B,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,EAAgC,KAAhC;MAAH,CAD3B;MAEA,uBAAA,EAAyB,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,EAAgC,IAAhC;MAAH,CAFzB;MAGA,yBAAA,EAA2B,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,EAAgC,KAAhC;MAAH,CAH3B;MAIA,yBAAA,EAA2B,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,oBAAX,EAAiC,IAAjC;MAAH,CAJ3B;MAKA,2BAAA,EAA6B,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,oBAAX,EAAiC,KAAjC;MAAH,CAL7B;;;uBAOF,UAAA,GAAY,SAAA;MACV,IAAC,CAAA,GAAG,CAAC,IAAL,CAAU,IAAC,CAAA,QAAX;MAEA,IAAC,CAAA,MAAD,GAAU,IAAC,CAAA,CAAD,CAAG,aAAH;MACV,IAAC,CAAA,OAAD,GAAW,IAAC,CAAA,CAAD,CAAG,cAAH;aAEX,IAAC,CAAA,IAAD,CAAA;IANU;;uBAQZ,IAAA,GAAM,SAAA;MACJ,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,yBAAlB,EAA6C,IAAC,CAAA,WAA9C;MACA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,0BAAlB,EAA8C,IAAC,CAAA,YAA/C;MAEA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,0BAAlB,EAA8C,IAAC,CAAA,OAA/C;MACA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,0BAAlB,EAA8C,IAAC,CAAA,OAA/C;aACA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,2BAAlB,EAA+C,IAAC,CAAA,SAAhD;IANI;;uBAQN,WAAA,GAAa,SAAA;MACX,IAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,kBAAX,CAAH;eACE,IAAC,CAAA,WAAD,CAAa,IAAC,CAAA,MAAd,EAAsB,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,kBAAX,CAAtB,EADF;OAAA,MAAA;eAGE,IAAC,CAAA,WAAD,CAAa,IAAC,CAAA,MAAd,EAHF;;IADW;;uBAMb,YAAA,GAAc,SAAA;MACZ,IAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,CAAH;eACE,IAAC,CAAA,WAAD,CAAa,IAAC,CAAA,OAAd,EAAuB,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,CAAvB,EADF;OAAA,MAAA;eAGE,IAAC,CAAA,WAAD,CAAa,IAAC,CAAA,OAAd,EAHF;;IADY;;uBAMd,WAAA,GAAa,SAAC,MAAD,EAAS,GAAT;aACX,MAAM,CAAC,IAAP,CAAY,SAAA;QACV,IAAC,CAAA,GAAD,GAAO;eACP,IAAC,CAAA,IAAD,CAAA;MAFU,CAAZ;IADW;;uBAKb,WAAA,GAAa,SAAC,MAAD;aACX,MAAM,CAAC,IAAP,CAAY,SAAA;QACV,IAAC,CAAA,KAAD,CAAA;eACA,IAAC,CAAA,eAAD,CAAiB,KAAjB;MAFU,CAAZ;IADW;;uBAKb,YAAA,GAAc,SAAC,MAAD,EAAS,KAAT;AACZ,UAAA;MAAA,IAAG,cAAH;AACE;aAAA,wCAAA;;uBACE,KAAK,CAAC,OAAN,GAAgB;AADlB;uBADF;;IADY;;uBAKd,OAAA,GAAS,SAAA;AACP,UAAA;MAAA,KAAA,GAAQ,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX;aACR,IAAC,CAAA,YAAD,gGAAwC,CAAE,kCAA1C,EAA6D,CAAI,KAAjE;IAFO;;uBAIT,OAAA,GAAS,SAAA;AACP,UAAA;MAAA,KAAA,GAAQ,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX;aACR,IAAC,CAAA,YAAD,gGAAwC,CAAE,kCAA1C,EAA6D,CAAI,KAAjE;IAFO;;uBAIT,SAAA,GAAW,SAAA;AACT,UAAA;MAAA,KAAA,GAAQ,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,oBAAX;aACR,IAAC,CAAA,YAAD,iGAAyC,CAAE,kCAA3C,EAA8D,CAAI,KAAlE;IAFS;;uBAIX,MAAA,GAAQ,SAAA;MACN,IAAC,CAAA,KAAD,GAAS,MAAM,CAAC,IAAP,CAAY,IAAC,CAAA,EAAb,EAAiB;QAAA,KAAA,EAAO,IAAC,CAAA,KAAR;QAAe,IAAA,EAAM,IAArB;OAAjB;aACT;IAFM;;uBAIR,MAAA,GAAQ,SAAA;MACN,IAAC,CAAA,KAAK,CAAC,MAAP,CAAA;aACA,sCAAA,SAAA;IAFM;;;;KAvEkB,QAAQ,CAAC;;EA4E/B,IAAI,CAAC;;;;;;;uBACT,UAAA,GAAY,SAAA;MACV,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,UAAX,EAAuB,KAAvB,EAA8B,IAAC,CAAA,KAA/B;aACA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,UAAX,EAAuB,QAAvB,EAAiC,IAAC,CAAA,QAAlC;IAFU;;uBAIZ,KAAA,GAAO,SAAC,KAAD;MACL,KAAK,CAAC,IAAN,GAAiB,IAAA,IAAI,CAAC,QAAL,CAAc;QAAA,KAAA,EAAO,KAAP;OAAd;aACjB,IAAC,CAAA,GAAG,CAAC,MAAL,CAAY,KAAK,CAAC,IAAI,CAAC,MAAX,CAAA,CAAmB,CAAC,EAAhC;IAFK;;uBAIP,QAAA,GAAU,SAAC,KAAD;aACR,KAAK,CAAC,IAAI,CAAC,MAAX,CAAA;IADQ;;;;KATgB,QAAQ,CAAC;AAvGrC"
+  "mappings": ";AAAA;AAAA,MAAA;;;EAAM,IAAI,CAAC;;;;;;;mBACT,WAAA,GAAa;;mBAEb,UAAA,GAAY,SAAA;MACV,IAAC,CAAA,EAAD,CAAI,qBAAJ,EAA2B,IAAC,CAAA,oBAA5B;aACA,IAAC,CAAA,EAAD,CAAI,sBAAJ,EAA4B,IAAC,CAAA,qBAA7B;IAFU;;mBAIZ,eAAA,GAAiB,SAAC,KAAD,EAAQ,KAAR;AACf,UAAA;MAAA,IAAG,IAAC,CAAA,GAAD,CAAK,KAAL,CAAH;QACE,GAAG,CAAC,eAAJ,CAAoB,IAAC,CAAA,GAAD,CAAK,KAAL,CAApB,EADF;;MAEA,MAAA,GAAS,IAAC,CAAA,GAAD,CAAK,KAAL;MACT,IAAG,MAAH;eACE,IAAC,CAAA,GAAD,CAAK,KAAL,EAAY,GAAG,CAAC,eAAJ,CAAoB,MAApB,CAAZ,EADF;OAAA,MAAA;eAGE,IAAC,CAAA,KAAD,CAAO,KAAP,EAHF;;IAJe;;mBASjB,oBAAA,GAAsB,SAAA;aACpB,IAAC,CAAA,eAAD,CAAiB,cAAjB,EAAiC,kBAAjC;IADoB;;mBAGtB,qBAAA,GAAuB,SAAA;aACrB,IAAC,CAAA,eAAD,CAAiB,eAAjB,EAAkC,mBAAlC;IADqB;;;;KAnBD,QAAQ,CAAC;;EAuB3B,IAAI,CAAC;;;;;;;oBACT,KAAA,GAAO,IAAI,CAAC;;;;KADW,QAAQ,CAAC;;EAI5B,IAAI,CAAC;;;;;;;uBACT,OAAA,GAAS;;uBACT,SAAA,GAAW;;uBACX,QAAA,GAAU,CAAA,CAAE,uBAAF,CAA0B,CAAC,IAA3B,CAAA;;uBACV,MAAA,GACE;MAAA,uBAAA,EAAyB,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,EAAgC,IAAhC;MAAH,CAAzB;MACA,yBAAA,EAA2B,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,EAAgC,KAAhC;MAAH,CAD3B;MAEA,uBAAA,EAAyB,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,EAAgC,IAAhC;MAAH,CAFzB;MAGA,yBAAA,EAA2B,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,EAAgC,KAAhC;MAAH,CAH3B;MAIA,yBAAA,EAA2B,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,oBAAX,EAAiC,IAAjC;MAAH,CAJ3B;MAKA,2BAAA,EAA6B,SAAA;eAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,oBAAX,EAAiC,KAAjC;MAAH,CAL7B;;;uBAOF,UAAA,GAAY,SAAA;MACV,IAAC,CAAA,GAAG,CAAC,IAAL,CAAU,IAAC,CAAA,QAAX;MAEA,IAAC,CAAA,MAAD,GAAU,IAAC,CAAA,CAAD,CAAG,aAAH;MACV,IAAC,CAAA,OAAD,GAAW,IAAC,CAAA,CAAD,CAAG,cAAH;aAEX,IAAC,CAAA,IAAD,CAAA;IANU;;uBAQZ,IAAA,GAAM,SAAA;MACJ,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,yBAAlB,EAA6C,IAAC,CAAA,WAA9C;MACA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,0BAAlB,EAA8C,IAAC,CAAA,YAA/C;MAEA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,0BAAlB,EAA8C,IAAC,CAAA,OAA/C;MACA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,0BAAlB,EAA8C,IAAC,CAAA,OAA/C;MACA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,2BAAlB,EAA+C,IAAC,CAAA,SAAhD;aAEA,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,KAAX,EAAkB,QAAlB,EAA4B,IAAC,CAAA,MAA7B;IARI;;uBAUN,WAAA,GAAa,SAAA;MACX,IAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,kBAAX,CAAH;eACE,IAAC,CAAA,WAAD,CAAa,IAAC,CAAA,MAAd,EAAsB,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,kBAAX,CAAtB,EADF;OAAA,MAAA;eAGE,IAAC,CAAA,WAAD,CAAa,IAAC,CAAA,MAAd,EAHF;;IADW;;uBAMb,YAAA,GAAc,SAAA;MACZ,IAAG,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,CAAH;eACE,IAAC,CAAA,WAAD,CAAa,IAAC,CAAA,OAAd,EAAuB,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX,CAAvB,EADF;OAAA,MAAA;eAGE,IAAC,CAAA,WAAD,CAAa,IAAC,CAAA,OAAd,EAHF;;IADY;;uBAMd,WAAA,GAAa,SAAC,MAAD,EAAS,GAAT;aACX,MAAM,CAAC,IAAP,CAAY,SAAA;QACV,IAAC,CAAA,GAAD,GAAO;eACP,IAAC,CAAA,IAAD,CAAA;MAFU,CAAZ;IADW;;uBAKb,WAAA,GAAa,SAAC,MAAD;aACX,MAAM,CAAC,IAAP,CAAY,SAAA;QACV,IAAC,CAAA,KAAD,CAAA;eACA,IAAC,CAAA,eAAD,CAAiB,KAAjB;MAFU,CAAZ;IADW;;uBAKb,YAAA,GAAc,SAAC,MAAD,EAAS,KAAT;AACZ,UAAA;MAAA,IAAG,cAAH;AACE;aAAA,wCAAA;;uBACE,KAAK,CAAC,OAAN,GAAgB;AADlB;uBADF;;IADY;;uBAKd,OAAA,GAAS,SAAA;AACP,UAAA;MAAA,KAAA,GAAQ,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX;aACR,IAAC,CAAA,YAAD,gGAAwC,CAAE,kCAA1C,EAA6D,CAAI,KAAjE;IAFO;;uBAIT,OAAA,GAAS,SAAA;AACP,UAAA;MAAA,KAAA,GAAQ,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,mBAAX;aACR,IAAC,CAAA,YAAD,gGAAwC,CAAE,kCAA1C,EAA6D,CAAI,KAAjE;IAFO;;uBAIT,SAAA,GAAW,SAAA;AACT,UAAA;MAAA,KAAA,GAAQ,IAAC,CAAA,KAAK,CAAC,GAAP,CAAW,oBAAX;aACR,IAAC,CAAA,YAAD,iGAAyC,CAAE,kCAA3C,EAA8D,CAAI,KAAlE;IAFS;;uBAIX,MAAA,GAAQ,SAAA;MACN,IAAC,CAAA,KAAD,GAAS,MAAM,CAAC,IAAP,CAAY,IAAC,CAAA,EAAb,EAAiB;QAAA,KAAA,EAAO,IAAC,CAAA,KAAR;QAAe,IAAA,EAAM,IAArB;OAAjB;aACT;IAFM;;uBAIR,MAAA,GAAQ,SAAA;MACN,IAAC,CAAA,KAAK,CAAC,MAAP,CAAA;aACA,sCAAA,SAAA;IAFM;;;;KAzEkB,QAAQ,CAAC;;EA8E/B,IAAI,CAAC;;;;;;;uBACT,UAAA,GAAY,SAAA;aACV,IAAC,CAAA,QAAD,CAAU,IAAC,CAAA,UAAX,EAAuB,KAAvB,EAA8B,IAAC,CAAA,KAA/B;IADU;;uBAGZ,KAAA,GAAO,SAAC,KAAD;MACL,KAAK,CAAC,IAAN,GAAiB,IAAA,IAAI,CAAC,QAAL,CAAc;QAAA,KAAA,EAAO,KAAP;OAAd;aACjB,IAAC,CAAA,GAAG,CAAC,MAAL,CAAY,KAAK,CAAC,IAAI,CAAC,MAAX,CAAA,CAAmB,CAAC,EAAhC;IAFK;;;;KAJmB,QAAQ,CAAC;AAzGrC"
 }
\ No newline at end of file