Merge "Implement View.cancelDragAndDrop"
diff --git a/api/current.txt b/api/current.txt
index 1231ff3..5048788 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -36284,6 +36284,7 @@
method public boolean canResolveTextDirection();
method public boolean canScrollHorizontally(int);
method public boolean canScrollVertically(int);
+ method public final void cancelDragAndDrop();
method public void cancelLongPress();
method public final void cancelPendingInputEvents();
method public boolean checkInputConnectionProxy(android.view.View);
diff --git a/api/system-current.txt b/api/system-current.txt
index ef897b4..ae0ac0c 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -38607,6 +38607,7 @@
method public boolean canResolveTextDirection();
method public boolean canScrollHorizontally(int);
method public boolean canScrollVertically(int);
+ method public final void cancelDragAndDrop();
method public void cancelLongPress();
method public final void cancelPendingInputEvents();
method public boolean checkInputConnectionProxy(android.view.View);
diff --git a/core/java/android/view/IWindowSession.aidl b/core/java/android/view/IWindowSession.aidl
index 3fc70cc..b3cd8c11 100644
--- a/core/java/android/view/IWindowSession.aidl
+++ b/core/java/android/view/IWindowSession.aidl
@@ -186,6 +186,11 @@
void reportDropResult(IWindow window, boolean consumed);
/**
+ * Cancel the current drag operation.
+ */
+ void cancelDragAndDrop(IBinder dragToken);
+
+ /**
* Tell the OS that we've just dragged into a View that is willing to accept the drop
*/
void dragRecipientEntered(IWindow window);
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index 7cd4f0d..66381f9 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -19980,11 +19980,11 @@
}
Surface surface = new Surface();
try {
- IBinder token = mAttachInfo.mSession.prepareDrag(mAttachInfo.mWindow,
+ mAttachInfo.mDragToken = mAttachInfo.mSession.prepareDrag(mAttachInfo.mWindow,
flags, shadowSize.x, shadowSize.y, surface);
- if (ViewDebug.DEBUG_DRAG) Log.d(VIEW_LOG_TAG, "prepareDrag returned token=" + token
- + " surface=" + surface);
- if (token != null) {
+ if (ViewDebug.DEBUG_DRAG) Log.d(VIEW_LOG_TAG, "prepareDrag returned token="
+ + mAttachInfo.mDragToken + " surface=" + surface);
+ if (mAttachInfo.mDragToken != null) {
Canvas canvas = surface.lockCanvas(null);
try {
canvas.drawColor(0, PorterDuff.Mode.CLEAR);
@@ -20001,7 +20001,7 @@
// repurpose 'shadowSize' for the last touch point
root.getLastTouchPoint(shadowSize);
- okay = mAttachInfo.mSession.performDrag(mAttachInfo.mWindow, token,
+ okay = mAttachInfo.mSession.performDrag(mAttachInfo.mWindow, mAttachInfo.mDragToken,
shadowSize.x, shadowSize.y,
shadowTouchPoint.x, shadowTouchPoint.y, data);
if (ViewDebug.DEBUG_DRAG) Log.d(VIEW_LOG_TAG, "performDrag returned " + okay);
@@ -20019,6 +20019,39 @@
}
/**
+ * Cancels an ongoing drag and drop operation.
+ * <p>
+ * A {@link android.view.DragEvent} object with
+ * {@link android.view.DragEvent#getAction()} value of
+ * {@link android.view.DragEvent#ACTION_DRAG_ENDED} and
+ * {@link android.view.DragEvent#getResult()} value of {@code false}
+ * will be sent to every
+ * View that received {@link android.view.DragEvent#ACTION_DRAG_STARTED}
+ * even if they are not currently visible.
+ * </p>
+ * <p>
+ * This method can be called on any View in the same window as the View on which
+ * {@link #startDragAndDrop(ClipData, DragShadowBuilder, Object, int) startDragAndDrop}
+ * was called.
+ * </p>
+ */
+ public final void cancelDragAndDrop() {
+ if (ViewDebug.DEBUG_DRAG) {
+ Log.d(VIEW_LOG_TAG, "cancelDragAndDrop");
+ }
+ if (mAttachInfo.mDragToken != null) {
+ try {
+ mAttachInfo.mSession.cancelDragAndDrop(mAttachInfo.mDragToken);
+ } catch (Exception e) {
+ Log.e(VIEW_LOG_TAG, "Unable to cancel drag", e);
+ }
+ mAttachInfo.mDragToken = null;
+ } else {
+ Log.e(VIEW_LOG_TAG, "No active drag to cancel");
+ }
+ }
+
+ /**
* Starts a move from {startX, startY}, the amount of the movement will be the offset
* between {startX, startY} and the new cursor positon.
* @param startX horizontal coordinate where the move started.
@@ -22304,6 +22337,11 @@
final List<View> mPartialLayoutViews = new ArrayList<View>();
/**
+ * Used to track the identity of the current drag operation.
+ */
+ IBinder mDragToken;
+
+ /**
* Creates a new set of attachment information with the specified
* events handler and thread.
*
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 5bbfc3f..2c0cd7a 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -5372,10 +5372,10 @@
}
}
- // When the drag operation ends, release any local state object
- // that may have been in use
+ // When the drag operation ends, reset drag-related state
if (what == DragEvent.ACTION_DRAG_ENDED) {
setLocalDragState(null);
+ mAttachInfo.mDragToken = null;
}
}
}
diff --git a/services/core/java/com/android/server/wm/Session.java b/services/core/java/com/android/server/wm/Session.java
index 1caeca0..01bdb7c 100644
--- a/services/core/java/com/android/server/wm/Session.java
+++ b/services/core/java/com/android/server/wm/Session.java
@@ -401,6 +401,34 @@
}
}
+ public void cancelDragAndDrop(IBinder dragToken) {
+ if (WindowManagerService.DEBUG_DRAG) {
+ Slog.d(WindowManagerService.TAG, "cancelDragAndDrop");
+ }
+
+ synchronized (mService.mWindowMap) {
+ long ident = Binder.clearCallingIdentity();
+ try {
+ if (mService.mDragState == null) {
+ Slog.w(WindowManagerService.TAG, "cancelDragAndDrop() without prepareDrag()");
+ throw new IllegalStateException("cancelDragAndDrop() without prepareDrag()");
+ }
+
+ if (mService.mDragState.mToken != dragToken) {
+ Slog.w(WindowManagerService.TAG,
+ "cancelDragAndDrop() does not match prepareDrag()");
+ throw new IllegalStateException(
+ "cancelDragAndDrop() does not match prepareDrag()");
+ }
+
+ mService.mDragState.mDragResult = false;
+ mService.mDragState.endDragLw();
+ } finally {
+ Binder.restoreCallingIdentity(ident);
+ }
+ }
+ }
+
public void dragRecipientEntered(IWindow window) {
if (WindowManagerService.DEBUG_DRAG) {
Slog.d(WindowManagerService.TAG, "Drag into new candidate view @ " + window.asBinder());
diff --git a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeWindowSession.java b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeWindowSession.java
index 1ec0547..5c73fb6a 100644
--- a/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeWindowSession.java
+++ b/tools/layoutlib/bridge/src/com/android/layoutlib/bridge/android/BridgeWindowSession.java
@@ -167,6 +167,11 @@
}
@Override
+ public void cancelDragAndDrop(IBinder dragToken) throws RemoteException {
+ // pass for now
+ }
+
+ @Override
public void dragRecipientEntered(IWindow window) throws RemoteException {
// pass for now
}