List items animation and some other shit

js/views/listView.js

@@ -5,6 +5,18 @@
 
     this.el = opts.el;
 
+    this.dragThresholdX = 10;
+      
+    this._initDrag();
+
+    window.ionic.onGesture('drag', function(e) {
+      _this._handleDrag(e);
+    }, this.el);
+    window.ionic.onGesture('release', function(e) {
+      _this._handleEndDrag(e);
+    }, this.el);
+
+    /*
     window.ionic.onGesture('swipeleft', function(e) {
       _this._handleSwipeLeft(e);
       e.gesture.stopDetect();
@@ -16,9 +28,130 @@
       e.gesture.stopDetect();
       return false;
     }, this.el);
+    */
   };
 
   ionic.views.List.prototype = {
+    _initDrag: function() {
+      this._offsetX = 0;
+      this._isDragging = false;
+      this._currentDrag = null;
+    },
+    _startDrag: function(e) {
+      this._isDragging = false;
+
+      // Grab the content item
+      if(e.target.classList.contains('list-item')) {
+        content = e.target.querySelector('.list-item-content');
+      } else if(e.target.classList.contains('list-item-content')) {
+        content = e.target;
+      }
+
+      if(!content) {
+        return;
+      }
+
+      content.classList.remove('list-item-sliding');
+
+      // Grab the buttons
+      buttons = content.parentNode.querySelector('.list-item-buttons');
+      if(!buttons) {
+        return;
+      }
+        
+      buttonsWidth = buttons.offsetWidth;
+
+      this._currentDrag = {
+        buttonsWidth: buttonsWidth,
+        content: content
+      };
+    },
+    _handleEndDrag: function(e) {
+      var _this = this;
+      
+      // If we are currently dragging, we want to snap back into place
+      if(this._currentDrag) {
+
+        // The final resting point X will be the width of the exposed buttons
+        var restingPoint = -this._currentDrag.buttonsWidth;
+
+        // Check if the drag didn't clear the buttons and we aren't moving fast enough to swipe open
+        if(e.gesture.deltaX > -this._currentDrag.buttonsWidth) {
+          if(e.gesture.direction == "left" && Math.abs(e.gesture.velocityX) < 0.3) {
+            restingPoint = 0;
+          } else if(e.gesture.direction == "right") {
+            restingPoint = 0;
+          }
+        }
+
+        var content = this._currentDrag.content;
+
+        var onRestingAnimationEnd = function(e) {
+          if(e.propertyName == '-webkit-transform') {
+            content.classList.remove('list-item-sliding');
+          }
+          e.target.removeEventListener('webkitTransitionEnd', onRestingAnimationEnd);
+        }
+
+        window.requestAnimationFrame(function() {
+          var currentX = parseFloat(_this._currentDrag.content.style.webkitTransform.replace('translate3d(', '').split(',')[0]) || 0;
+          if(currentX !== restingPoint) {
+            _this._currentDrag.content.classList.add('list-item-sliding');
+            _this._currentDrag.content.addEventListener('webkitTransitionEnd', onRestingAnimationEnd);
+          }
+          _this._currentDrag.content.style.webkitTransform = 'translate3d(' + restingPoint + 'px, 0, 0)';
+          _this._initDrag();
+        });
+
+      } else {
+        this._initDrag();
+      }
+    },
+
+    /**
+     * Process the drag event to move the item to the left or right.
+     */
+    _handleDrag: function(e) {
+      var _this = this, content, buttons;
+
+      if(!this._currentDrag) {
+        this._startDrag(e);
+      }
+
+      window.requestAnimationFrame(function() {
+
+        if(!_this._currentDrag) {
+          return;
+        }
+
+        // Calculate difference from the tap points
+        if(!_this._isDragging && Math.abs(e.gesture.deltaX) > _this.dragThresholdX) {
+          _this._isDragging = true;
+
+          // Grab the starting X point for this item
+          _this._offsetX = parseFloat(_this._currentDrag.content.style.webkitTransform.replace('translate3d(', '').split(',')[0]) || 0;
+        }
+
+        if(_this._isDragging) {
+
+          // Grab the new X point, capping it at zero
+
+          var newX = Math.min(0, _this._offsetX + e.gesture.deltaX);
+          if(newX < -buttonsWidth && !_this._deltaSlowX) {
+            _this._deltaSlowX = e.gesture.deltaX;
+          }
+          if(newX < -buttonsWidth) {
+            newX = Math.min(_this._deltaSlowX, _this._deltaSlowX + (((e.gesture.deltaX - _this._deltaSlowX) * 0.4)));
+          }
+
+          console.log(newX);
+          
+          _this._currentDrag.content.style.webkitTransform = 'translate3d(' + newX + 'px, 0, 0)';
+        }
+      });
+    },
+
+
     _handleSwipeLeft: function(e) {
 
       window.requestAnimationFrame(function() {
@@ -26,12 +159,6 @@
           cl = item.classList,
           content, buttons, buttonsWidth;
 
-        // Grab the content item
-        if(cl.contains('list-item')) {
-          content = item.querySelector('.list-item-content');
-        } else if(cl.contains('list-item-content')) {
-          content = item;
-        }
 
         if(!content) {
           return;