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Fix bug with drag visualization and UserFolders.

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When dragging an app shortcut, it was possible that we'd show a red rectangle
around a cell occupied by a UserFolder. This shouldn't be possible -- as soon
as that cell becomes the target drop cell, the folder should start handling
the drag and drop events.

Change-Id: I1b7a8b1aa9aeb7e2f1bd51ce8d947c06455e988f
This commit is contained in:
Patrick Dubroy
2010-07-13 17:50:32 -07:00
parent 6569f2c80e
commit 440c360bc3
7 changed files with 107 additions and 3 deletions
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20
src/com/android/launcher2/DropTarget.java
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@@ -50,6 +50,26 @@ public interface DropTarget {
void onDragExit(DragSource source, int x, int y, int xOffset, int yOffset,
DragView dragView, Object dragInfo);
/**
* Allows a DropTarget to delegate drag and drop events to another object.
*
* Most subclasses will should just return null from this method.
*
* @param source DragSource where the drag started
* @param x X coordinate of the drop location
* @param y Y coordinate of the drop location
* @param xOffset Horizontal offset with the object being dragged where the original
* touch happened
* @param yOffset Vertical offset with the object being dragged where the original
* touch happened
* @param dragView The DragView that's being dragged around on screen.
* @param dragInfo Data associated with the object being dragged
*
* @return The DropTarget to delegate to, or null to not delegate to another object.
*/
DropTarget getDropTargetDelegate(DragSource source, int x, int y, int xOffset, int yOffset,
DragView dragView, Object dragInfo);
/**
* Check if a drop action can occur at, or near, the requested location.
* This may be called repeatedly during a drag, so any calls should return