chore(listView): cleanup element references

js/views/listView.js

@@ -171,7 +171,15 @@
 
 
       // Kill the current drag
+      if(_this._lastDrag) {
+        _this._lastDrag.buttons = null;
+        _this._lastDrag.content = null;
+      }
       _this._lastDrag = _this._currentDrag;
+      if(_this._currentDrag) {
+        _this._currentDrag.buttons = null;
+        _this._currentDrag.content = null;
+      }
       _this._currentDrag = null;
 
       // We are done, notify caller
@@ -207,6 +215,13 @@
     this.el.style[ionic.CSS.TRANSFORM] = 'translate3d(0, '+y+'px, 0)';
   };
 
+  ReorderDrag.prototype.deregister = function() {
+    this.listEl = null;
+    this.el = null;
+    this.scrollEl = null;
+    this.scrollView = null;
+  };
+
   ReorderDrag.prototype.start = function(e) {
     var content;
 
@@ -331,6 +346,10 @@
 
     this.onReorder && this.onReorder(this.el, this._currentDrag.startIndex, finalIndex);
 
+    this._currentDrag = {
+      placeholder: null,
+      content: null
+    };
     this._currentDrag = null;
     doneCallback && doneCallback();
   };
@@ -376,13 +395,24 @@
       // Start the drag states
       this._initDrag();
     },
+
+    /**
+     * Be sure to cleanup references.
+     */
+    deregister: function() {
+      this.el = null;
+      this.listEl = null;
+      this.scrollEl = null;
+      this.scrollView = null;
+    },
+
     /**
      * Called to tell the list to stop refreshing. This is useful
      * if you are refreshing the list and are done with refreshing.
      */
     stopRefreshing: function() {
       var refresher = this.el.querySelector('.list-refresher');
-      refresher.style.height = '0px';
+      refresher.style.height = '0';
     },
 
     /**
@@ -449,6 +479,7 @@
     clearDragEffects: function() {
       if(this._lastDragOp) {
         this._lastDragOp.clean && this._lastDragOp.clean();
+        this._lastDragOp.deregister && this._lastDragOp.deregister();
         this._lastDragOp = null;
       }
     },
@@ -457,6 +488,9 @@
       //ionic.views.ListView.__super__._initDrag.call(this);
 
       // Store the last one
+      if(this._lastDragOp) {
+        this._lastDragOp.deregister && this._lastDragOp.deregister();
+      }
       this._lastDragOp = this._dragOp;
 
       this._dragOp = null;