1 files changed, 27 insertions, 38 deletions

diff --git a/src/com/android/launcher3/DropTarget.java b/src/com/android/launcher3/DropTarget.java
index 64f0ac867..c8fac5466 100644
--- a/src/com/android/launcher3/DropTarget.java
+++ b/src/com/android/launcher3/DropTarget.java
@@ -16,10 +16,8 @@
 
 package com.android.launcher3;
 
-import android.content.Context;
 import android.graphics.PointF;
 import android.graphics.Rect;
-import android.util.Log;
 
 /**
  * Interface defining an object that can receive a drag.
@@ -29,7 +27,7 @@ public interface DropTarget {
 
     public static final String TAG = "DropTarget";
 
-    class DragObject {
+    public static class DragObject {
         public int x = -1;
         public int y = -1;
 
@@ -54,6 +52,9 @@ public interface DropTarget {
         /** Where the drag originated */
         public DragSource dragSource = null;
 
+        /** The object is part of an accessible drag operation */
+        public boolean accessibleDrag;
+
         /** Post drag animation runnable */
         public Runnable postAnimationRunnable = null;
 
@@ -65,42 +66,28 @@ public interface DropTarget {
 
         public DragObject() {
         }
-    }
-
-    public static class DragEnforcer implements DragController.DragListener {
-        int dragParity = 0;
-
-        public DragEnforcer(Context context) {
-            Launcher launcher = (Launcher) context;
-            launcher.getDragController().addDragListener(this);
-        }
 
-        void onDragEnter() {
-            dragParity++;
-            if (dragParity != 1) {
-                Log.e(TAG, "onDragEnter: Drag contract violated: " + dragParity);
-            }
-        }
+        /**
+         * This is used to compute the visual center of the dragView. This point is then
+         * used to visualize drop locations and determine where to drop an item. The idea is that
+         * the visual center represents the user's interpretation of where the item is, and hence
+         * is the appropriate point to use when determining drop location.
+         */
+        public final float[] getVisualCenter(float[] recycle) {
+            final float res[] = (recycle == null) ? new float[2] : recycle;
 
-        void onDragExit() {
-            dragParity--;
-            if (dragParity != 0) {
-                Log.e(TAG, "onDragExit: Drag contract violated: " + dragParity);
-            }
-        }
+            // These represent the visual top and left of drag view if a dragRect was provided.
+            // If a dragRect was not provided, then they correspond to the actual view left and
+            // top, as the dragRect is in that case taken to be the entire dragView.
+            // R.dimen.dragViewOffsetY.
+            int left = x - xOffset;
+            int top = y - yOffset;
 
-        @Override
-        public void onDragStart(DragSource source, Object info, int dragAction) {
-            if (dragParity != 0) {
-                Log.e(TAG, "onDragEnter: Drag contract violated: " + dragParity);
-            }
-        }
+            // In order to find the visual center, we shift by half the dragRect
+            res[0] = left + dragView.getDragRegion().width() / 2;
+            res[1] = top + dragView.getDragRegion().height() / 2;
 
-        @Override
-        public void onDragEnd() {
-            if (dragParity != 0) {
-                Log.e(TAG, "onDragExit: Drag contract violated: " + dragParity);
-            }
+            return res;
         }
     }
 
@@ -113,7 +100,7 @@ public interface DropTarget {
 
     /**
      * Handle an object being dropped on the DropTarget
-     * 
+     *
      * @param source DragSource where the drag started
      * @param x X coordinate of the drop location
      * @param y Y coordinate of the drop location
@@ -138,12 +125,12 @@ public interface DropTarget {
      * of onDrop().  (This is only called on objects that are set as the DragController's
      * fling-to-delete target.
      */
-    void onFlingToDelete(DragObject dragObject, int x, int y, PointF vec);
+    void onFlingToDelete(DragObject dragObject, PointF vec);
 
     /**
      * Check if a drop action can occur at, or near, the requested location.
      * This will be called just before onDrop.
-     * 
+     *
      * @param source DragSource where the drag started
      * @param x X coordinate of the drop location
      * @param y Y coordinate of the drop location
@@ -157,6 +144,8 @@ public interface DropTarget {
      */
     boolean acceptDrop(DragObject dragObject);
 
+    void prepareAccessibilityDrop();
+
     // These methods are implemented in Views
     void getHitRectRelativeToDragLayer(Rect outRect);
     void getLocationInDragLayer(int[] loc);