/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.wm;
import static com.android.server.wm.DragDropController.MSG_ANIMATION_END;
import static com.android.server.wm.DragDropController.MSG_DRAG_END_TIMEOUT;
import static com.android.server.wm.DragDropController.MSG_TEAR_DOWN_DRAG_AND_DROP_INPUT;
import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_DRAG;
import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_ORIENTATION;
import static com.android.server.wm.WindowManagerDebugConfig.SHOW_LIGHT_TRANSACTIONS;
import static com.android.server.wm.WindowManagerDebugConfig.SHOW_TRANSACTIONS;
import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
import android.animation.Animator;
import android.animation.PropertyValuesHolder;
import android.animation.ValueAnimator;
import android.annotation.Nullable;
import android.content.ClipData;
import android.content.ClipDescription;
import android.content.Context;
import android.graphics.Point;
import android.hardware.input.InputManager;
import android.os.Build;
import android.os.IBinder;
import android.os.Process;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.os.UserManager;
import android.os.IUserManager;
import android.os.UserManagerInternal;
import android.util.Slog;
import android.view.Display;
import android.view.DragEvent;
import android.view.InputChannel;
import android.view.InputDevice;
import android.view.PointerIcon;
import android.view.SurfaceControl;
import android.view.View;
import android.view.WindowManager;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import com.android.internal.view.IDragAndDropPermissions;
import com.android.server.LocalServices;
import com.android.server.input.InputApplicationHandle;
import com.android.server.input.InputWindowHandle;
import java.util.ArrayList;
/**
* Drag/drop state
*/
class DragState {
private static final long MIN_ANIMATION_DURATION_MS = 195;
private static final long MAX_ANIMATION_DURATION_MS = 375;
private static final int DRAG_FLAGS_URI_ACCESS = View.DRAG_FLAG_GLOBAL_URI_READ |
View.DRAG_FLAG_GLOBAL_URI_WRITE;
private static final int DRAG_FLAGS_URI_PERMISSIONS = DRAG_FLAGS_URI_ACCESS |
View.DRAG_FLAG_GLOBAL_PERSISTABLE_URI_PERMISSION |
View.DRAG_FLAG_GLOBAL_PREFIX_URI_PERMISSION;
// Property names for animations
private static final String ANIMATED_PROPERTY_X = "x";
private static final String ANIMATED_PROPERTY_Y = "y";
private static final String ANIMATED_PROPERTY_ALPHA = "alpha";
private static final String ANIMATED_PROPERTY_SCALE = "scale";
final WindowManagerService mService;
final DragDropController mDragDropController;
IBinder mToken;
/**
* Do not use the variable from the out of animation thread while mAnimator is not null.
*/
SurfaceControl mSurfaceControl;
int mFlags;
IBinder mLocalWin;
int mPid;
int mUid;
int mSourceUserId;
boolean mCrossProfileCopyAllowed;
ClipData mData;
ClipDescription mDataDescription;
int mTouchSource;
boolean mDragResult;
float mOriginalAlpha;
float mOriginalX, mOriginalY;
float mCurrentX, mCurrentY;
float mThumbOffsetX, mThumbOffsetY;
InputInterceptor mInputInterceptor;
WindowState mTargetWindow;
ArrayList<WindowState> mNotifiedWindows;
boolean mDragInProgress;
/**
* Whether if animation is completed. Needs to be volatile to update from the animation thread
* without having a WM lock.
*/
volatile boolean mAnimationCompleted = false;
DisplayContent mDisplayContent;
@Nullable private ValueAnimator mAnimator;
private final Interpolator mCubicEaseOutInterpolator = new DecelerateInterpolator(1.5f);
private Point mDisplaySize = new Point();
DragState(WindowManagerService service, DragDropController controller, IBinder token,
SurfaceControl surface, int flags, IBinder localWin) {
mService = service;
mDragDropController = controller;
mToken = token;
mSurfaceControl = surface;
mFlags = flags;
mLocalWin = localWin;
mNotifiedWindows = new ArrayList<WindowState>();
}
/**
* After calling this, DragDropController#onDragStateClosedLocked is invoked, which causes
* DragDropController#mDragState becomes null.
*/
void closeLocked() {
// Unregister the input interceptor.
if (mInputInterceptor != null) {
if (DEBUG_DRAG)
Slog.d(TAG_WM, "unregistering drag input channel");
// Input channel should be disposed on the thread where the input is being handled.
mDragDropController.sendHandlerMessage(
MSG_TEAR_DOWN_DRAG_AND_DROP_INPUT, mInputInterceptor);
mInputInterceptor = null;
mService.mInputMonitor.updateInputWindowsLw(true /*force*/);
}
// Send drag end broadcast if drag start has been sent.
if (mDragInProgress) {
final int myPid = Process.myPid();
if (DEBUG_DRAG) {
Slog.d(TAG_WM, "broadcasting DRAG_ENDED");
}
for (WindowState ws : mNotifiedWindows) {
float x = 0;
float y = 0;
if (!mDragResult && (ws.mSession.mPid == mPid)) {
// Report unconsumed drop location back to the app that started the drag.
x = mCurrentX;
y = mCurrentY;
}
DragEvent evt = DragEvent.obtain(DragEvent.ACTION_DRAG_ENDED,
x, y, null, null, null, null, mDragResult);
try {
ws.mClient.dispatchDragEvent(evt);
} catch (RemoteException e) {
Slog.w(TAG_WM, "Unable to drag-end window " + ws);
}
// if the current window is in the same process,
// the dispatch has already recycled the event
if (myPid != ws.mSession.mPid) {
evt.recycle();
}
}
mNotifiedWindows.clear();
mDragInProgress = false;
}
// Take the cursor back if it has been changed.
if (isFromSource(InputDevice.SOURCE_MOUSE)) {
mService.restorePointerIconLocked(mDisplayContent, mCurrentX, mCurrentY);
mTouchSource = 0;
}
// Clear the internal variables.
if (mSurfaceControl != null) {
mSurfaceControl.destroy();
mSurfaceControl = null;
}
if (mAnimator != null && !mAnimationCompleted) {
Slog.wtf(TAG_WM,
"Unexpectedly destroying mSurfaceControl while animation is running");
}
mFlags = 0;
mLocalWin = null;
mToken = null;
mData = null;
mThumbOffsetX = mThumbOffsetY = 0;
mNotifiedWindows = null;
// Notifies the controller that the drag state is closed.
mDragDropController.onDragStateClosedLocked(this);
}
class InputInterceptor {
InputChannel mServerChannel, mClientChannel;
DragInputEventReceiver mInputEventReceiver;
InputApplicationHandle mDragApplicationHandle;
InputWindowHandle mDragWindowHandle;
InputInterceptor(Display display) {
InputChannel[] channels = InputChannel.openInputChannelPair("drag");
mServerChannel = channels[0];
mClientChannel = channels[1];
mService.mInputManager.registerInputChannel(mServerChannel, null);
mInputEventReceiver = new DragInputEventReceiver(mClientChannel,
mService.mH.getLooper(), mDragDropController);
mDragApplicationHandle = new InputApplicationHandle(null);
mDragApplicationHandle.name = "drag";
mDragApplicationHandle.dispatchingTimeoutNanos =
WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;
mDragWindowHandle = new InputWindowHandle(mDragApplicationHandle, null, null,
display.getDisplayId());
mDragWindowHandle.name = "drag";
mDragWindowHandle.inputChannel = mServerChannel;
mDragWindowHandle.layer = getDragLayerLocked();
mDragWindowHandle.layoutParamsFlags = 0;
mDragWindowHandle.layoutParamsType = WindowManager.LayoutParams.TYPE_DRAG;
mDragWindowHandle.dispatchingTimeoutNanos =
WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;
mDragWindowHandle.visible = true;
mDragWindowHandle.canReceiveKeys = false;
mDragWindowHandle.hasFocus = true;
mDragWindowHandle.hasWallpaper = false;
mDragWindowHandle.paused = false;
mDragWindowHandle.ownerPid = Process.myPid();
mDragWindowHandle.ownerUid = Process.myUid();
mDragWindowHandle.inputFeatures = 0;
mDragWindowHandle.scaleFactor = 1.0f;
// The drag window cannot receive new touches.
mDragWindowHandle.touchableRegion.setEmpty();
// The drag window covers the entire display
mDragWindowHandle.frameLeft = 0;
mDragWindowHandle.frameTop = 0;
mDragWindowHandle.frameRight = mDisplaySize.x;
mDragWindowHandle.frameBottom = mDisplaySize.y;
// Pause rotations before a drag.
if (DEBUG_ORIENTATION) {
Slog.d(TAG_WM, "Pausing rotation during drag");
}
mService.pauseRotationLocked();
}
void tearDown() {
mService.mInputManager.unregisterInputChannel(mServerChannel);
mInputEventReceiver.dispose();
mInputEventReceiver = null;
mClientChannel.dispose();
mServerChannel.dispose();
mClientChannel = null;
mServerChannel = null;
mDragWindowHandle = null;
mDragApplicationHandle = null;
// Resume rotations after a drag.
if (DEBUG_ORIENTATION) {
Slog.d(TAG_WM, "Resuming rotation after drag");
}
mService.resumeRotationLocked();
}
}
InputChannel getInputChannel() {
return mInputInterceptor == null ? null : mInputInterceptor.mServerChannel;
}
InputWindowHandle getInputWindowHandle() {
return mInputInterceptor == null ? null : mInputInterceptor.mDragWindowHandle;
}
/**
* @param display The Display that the window being dragged is on.
*/
void register(Display display) {
display.getRealSize(mDisplaySize);
if (DEBUG_DRAG) Slog.d(TAG_WM, "registering drag input channel");
if (mInputInterceptor != null) {
Slog.e(TAG_WM, "Duplicate register of drag input channel");
} else {
mInputInterceptor = new InputInterceptor(display);
mService.mInputMonitor.updateInputWindowsLw(true /*force*/);
}
}
int getDragLayerLocked() {
return mService.mPolicy.getWindowLayerFromTypeLw(WindowManager.LayoutParams.TYPE_DRAG)
* WindowManagerService.TYPE_LAYER_MULTIPLIER
+ WindowManagerService.TYPE_LAYER_OFFSET;
}
/* call out to each visible window/session informing it about the drag
*/
void broadcastDragStartedLocked(final float touchX, final float touchY) {
mOriginalX = mCurrentX = touchX;
mOriginalY = mCurrentY = touchY;
// Cache a base-class instance of the clip metadata so that parceling
// works correctly in calling out to the apps.
mDataDescription = (mData != null) ? mData.getDescription() : null;
mNotifiedWindows.clear();
mDragInProgress = true;
mSourceUserId = UserHandle.getUserId(mUid);
final UserManagerInternal userManager = LocalServices.getService(UserManagerInternal.class);
mCrossProfileCopyAllowed = !userManager.getUserRestriction(
mSourceUserId, UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE);
if (DEBUG_DRAG) {
Slog.d(TAG_WM, "broadcasting DRAG_STARTED at (" + touchX + ", " + touchY + ")");
}
mDisplayContent.forAllWindows(w -> {
sendDragStartedLocked(w, touchX, touchY, mDataDescription);
}, false /* traverseTopToBottom */ );
}
/* helper - send a ACTION_DRAG_STARTED event, if the
* designated window is potentially a drop recipient. There are race situations
* around DRAG_ENDED broadcast, so we make sure that once we've declared that
* the drag has ended, we never send out another DRAG_STARTED for this drag action.
*
* This method clones the 'event' parameter if it's being delivered to the same
* process, so it's safe for the caller to call recycle() on the event afterwards.
*/
private void sendDragStartedLocked(WindowState newWin, float touchX, float touchY,
ClipDescription desc) {
if (mDragInProgress && isValidDropTarget(newWin)) {
DragEvent event = obtainDragEvent(newWin, DragEvent.ACTION_DRAG_STARTED,
touchX, touchY, null, desc, null, null, false);
try {
newWin.mClient.dispatchDragEvent(event);
// track each window that we've notified that the drag is starting
mNotifiedWindows.add(newWin);
} catch (RemoteException e) {
Slog.w(TAG_WM, "Unable to drag-start window " + newWin);
} finally {
// if the callee was local, the dispatch has already recycled the event
if (Process.myPid() != newWin.mSession.mPid) {
event.recycle();
}
}
}
}
private boolean isValidDropTarget(WindowState targetWin) {
if (targetWin == null) {
return false;
}
if (!targetWin.isPotentialDragTarget()) {
return false;
}
if ((mFlags & View.DRAG_FLAG_GLOBAL) == 0 || !targetWindowSupportsGlobalDrag(targetWin)) {
// Drag is limited to the current window.
if (mLocalWin != targetWin.mClient.asBinder()) {
return false;
}
}
return mCrossProfileCopyAllowed ||
mSourceUserId == UserHandle.getUserId(targetWin.getOwningUid());
}
private boolean targetWindowSupportsGlobalDrag(WindowState targetWin) {
// Global drags are limited to system windows, and windows for apps that are targeting N and
// above.
return targetWin.mAppToken == null
|| targetWin.mAppToken.mTargetSdk >= Build.VERSION_CODES.N;
}
/* helper - send a ACTION_DRAG_STARTED event only if the window has not
* previously been notified, i.e. it became visible after the drag operation
* was begun. This is a rare case.
*/
void sendDragStartedIfNeededLocked(WindowState newWin) {
if (mDragInProgress) {
// If we have sent the drag-started, we needn't do so again
if (isWindowNotified(newWin)) {
return;
}
if (DEBUG_DRAG) {
Slog.d(TAG_WM, "need to send DRAG_STARTED to new window " + newWin);
}
sendDragStartedLocked(newWin, mCurrentX, mCurrentY, mDataDescription);
}
}
private boolean isWindowNotified(WindowState newWin) {
for (WindowState ws : mNotifiedWindows) {
if (ws == newWin) {
return true;
}
}
return false;
}
void endDragLocked() {
if (mAnimator != null) {
return;
}
if (!mDragResult) {
mAnimator = createReturnAnimationLocked();
return; // Will call closeLocked() when the animation is done.
}
closeLocked();
}
void cancelDragLocked() {
if (mAnimator != null) {
return;
}
if (!mDragInProgress) {
// This can happen if an app invokes Session#cancelDragAndDrop before
// Session#performDrag. Reset the drag state without playing the cancel animation
// because H.DRAG_START_TIMEOUT may be sent to WindowManagerService, which will cause
// DragState#reset() while playing the cancel animation.
closeLocked();
return;
}
mAnimator = createCancelAnimationLocked();
}
void notifyMoveLocked(float x, float y) {
if (mAnimator != null) {
return;
}
mCurrentX = x;
mCurrentY = y;
// Move the surface to the given touch
if (SHOW_LIGHT_TRANSACTIONS) Slog.i(
TAG_WM, ">>> OPEN TRANSACTION notifyMoveLocked");
mService.openSurfaceTransaction();
try {
mSurfaceControl.setPosition(x - mThumbOffsetX, y - mThumbOffsetY);
if (SHOW_TRANSACTIONS) Slog.i(TAG_WM, " DRAG "
+ mSurfaceControl + ": pos=(" +
(int)(x - mThumbOffsetX) + "," + (int)(y - mThumbOffsetY) + ")");
} finally {
mService.closeSurfaceTransaction("notifyMoveLw");
if (SHOW_LIGHT_TRANSACTIONS) Slog.i(
TAG_WM, "<<< CLOSE TRANSACTION notifyMoveLocked");
}
notifyLocationLocked(x, y);
}
void notifyLocationLocked(float x, float y) {
// Tell the affected window
WindowState touchedWin = mDisplayContent.getTouchableWinAtPointLocked(x, y);
if (touchedWin != null && !isWindowNotified(touchedWin)) {
// The drag point is over a window which was not notified about a drag start.
// Pretend it's over empty space.
touchedWin = null;
}
try {
final int myPid = Process.myPid();
// have we dragged over a new window?
if ((touchedWin != mTargetWindow) && (mTargetWindow != null)) {
if (DEBUG_DRAG) {
Slog.d(TAG_WM, "sending DRAG_EXITED to " + mTargetWindow);
}
// force DRAG_EXITED_EVENT if appropriate
DragEvent evt = obtainDragEvent(mTargetWindow, DragEvent.ACTION_DRAG_EXITED,
0, 0, null, null, null, null, false);
mTargetWindow.mClient.dispatchDragEvent(evt);
if (myPid != mTargetWindow.mSession.mPid) {
evt.recycle();
}
}
if (touchedWin != null) {
if (false && DEBUG_DRAG) {
Slog.d(TAG_WM, "sending DRAG_LOCATION to " + touchedWin);
}
DragEvent evt = obtainDragEvent(touchedWin, DragEvent.ACTION_DRAG_LOCATION,
x, y, null, null, null, null, false);
touchedWin.mClient.dispatchDragEvent(evt);
if (myPid != touchedWin.mSession.mPid) {
evt.recycle();
}
}
} catch (RemoteException e) {
Slog.w(TAG_WM, "can't send drag notification to windows");
}
mTargetWindow = touchedWin;
}
/**
* Finds the drop target and tells it about the data. If the drop event is not sent to the
* target, invokes {@code endDragLocked} immediately.
*/
void notifyDropLocked(float x, float y) {
if (mAnimator != null) {
return;
}
mCurrentX = x;
mCurrentY = y;
final WindowState touchedWin = mDisplayContent.getTouchableWinAtPointLocked(x, y);
if (!isWindowNotified(touchedWin)) {
// "drop" outside a valid window -- no recipient to apply a
// timeout to, and we can send the drag-ended message immediately.
mDragResult = false;
endDragLocked();
return;
}
if (DEBUG_DRAG) Slog.d(TAG_WM, "sending DROP to " + touchedWin);
final int targetUserId = UserHandle.getUserId(touchedWin.getOwningUid());
final DragAndDropPermissionsHandler dragAndDropPermissions;
if ((mFlags & View.DRAG_FLAG_GLOBAL) != 0 && (mFlags & DRAG_FLAGS_URI_ACCESS) != 0
&& mData != null) {
dragAndDropPermissions = new DragAndDropPermissionsHandler(
mData,
mUid,
touchedWin.getOwningPackage(),
mFlags & DRAG_FLAGS_URI_PERMISSIONS,
mSourceUserId,
targetUserId);
} else {
dragAndDropPermissions = null;
}
if (mSourceUserId != targetUserId){
if (mData != null) {
mData.fixUris(mSourceUserId);
}
}
final int myPid = Process.myPid();
final IBinder token = touchedWin.mClient.asBinder();
final DragEvent evt = obtainDragEvent(touchedWin, DragEvent.ACTION_DROP, x, y,
null, null, mData, dragAndDropPermissions, false);
try {
touchedWin.mClient.dispatchDragEvent(evt);
// 5 second timeout for this window to respond to the drop
mDragDropController.sendTimeoutMessage(MSG_DRAG_END_TIMEOUT, token);
} catch (RemoteException e) {
Slog.w(TAG_WM, "can't send drop notification to win " + touchedWin);
endDragLocked();
} finally {
if (myPid != touchedWin.mSession.mPid) {
evt.recycle();
}
}
mToken = token;
}
/**
* Returns true if it has sent DRAG_STARTED broadcast out but has not been sent DRAG_END
* broadcast.
*/
boolean isInProgress() {
return mDragInProgress;
}
private static DragEvent obtainDragEvent(WindowState win, int action,
float x, float y, Object localState,
ClipDescription description, ClipData data,
IDragAndDropPermissions dragAndDropPermissions,
boolean result) {
final float winX = win.translateToWindowX(x);
final float winY = win.translateToWindowY(y);
return DragEvent.obtain(action, winX, winY, localState, description, data,
dragAndDropPermissions, result);
}
private ValueAnimator createReturnAnimationLocked() {
final ValueAnimator animator = ValueAnimator.ofPropertyValuesHolder(
PropertyValuesHolder.ofFloat(
ANIMATED_PROPERTY_X, mCurrentX - mThumbOffsetX,
mOriginalX - mThumbOffsetX),
PropertyValuesHolder.ofFloat(
ANIMATED_PROPERTY_Y, mCurrentY - mThumbOffsetY,
mOriginalY - mThumbOffsetY),
PropertyValuesHolder.ofFloat(ANIMATED_PROPERTY_SCALE, 1, 1),
PropertyValuesHolder.ofFloat(
ANIMATED_PROPERTY_ALPHA, mOriginalAlpha, mOriginalAlpha / 2));
final float translateX = mOriginalX - mCurrentX;
final float translateY = mOriginalY - mCurrentY;
// Adjust the duration to the travel distance.
final double travelDistance = Math.sqrt(translateX * translateX + translateY * translateY);
final double displayDiagonal =
Math.sqrt(mDisplaySize.x * mDisplaySize.x + mDisplaySize.y * mDisplaySize.y);
final long duration = MIN_ANIMATION_DURATION_MS + (long) (travelDistance / displayDiagonal
* (MAX_ANIMATION_DURATION_MS - MIN_ANIMATION_DURATION_MS));
final AnimationListener listener = new AnimationListener();
animator.setDuration(duration);
animator.setInterpolator(mCubicEaseOutInterpolator);
animator.addListener(listener);
animator.addUpdateListener(listener);
mService.mAnimationHandler.post(() -> animator.start());
return animator;
}
private ValueAnimator createCancelAnimationLocked() {
final ValueAnimator animator = ValueAnimator.ofPropertyValuesHolder(
PropertyValuesHolder.ofFloat(
ANIMATED_PROPERTY_X, mCurrentX - mThumbOffsetX, mCurrentX),
PropertyValuesHolder.ofFloat(
ANIMATED_PROPERTY_Y, mCurrentY - mThumbOffsetY, mCurrentY),
PropertyValuesHolder.ofFloat(ANIMATED_PROPERTY_SCALE, 1, 0),
PropertyValuesHolder.ofFloat(ANIMATED_PROPERTY_ALPHA, mOriginalAlpha, 0));
final AnimationListener listener = new AnimationListener();
animator.setDuration(MIN_ANIMATION_DURATION_MS);
animator.setInterpolator(mCubicEaseOutInterpolator);
animator.addListener(listener);
animator.addUpdateListener(listener);
mService.mAnimationHandler.post(() -> animator.start());
return animator;
}
private boolean isFromSource(int source) {
return (mTouchSource & source) == source;
}
void overridePointerIconLocked(int touchSource) {
mTouchSource = touchSource;
if (isFromSource(InputDevice.SOURCE_MOUSE)) {
InputManager.getInstance().setPointerIconType(PointerIcon.TYPE_GRABBING);
}
}
private class AnimationListener
implements ValueAnimator.AnimatorUpdateListener, Animator.AnimatorListener {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
try (final SurfaceControl.Transaction transaction = new SurfaceControl.Transaction()) {
transaction.setPosition(
mSurfaceControl,
(float) animation.getAnimatedValue(ANIMATED_PROPERTY_X),
(float) animation.getAnimatedValue(ANIMATED_PROPERTY_Y));
transaction.setAlpha(
mSurfaceControl,
(float) animation.getAnimatedValue(ANIMATED_PROPERTY_ALPHA));
transaction.setMatrix(
mSurfaceControl,
(float) animation.getAnimatedValue(ANIMATED_PROPERTY_SCALE), 0,
0, (float) animation.getAnimatedValue(ANIMATED_PROPERTY_SCALE));
transaction.apply();
}
}
@Override
public void onAnimationStart(Animator animator) {}
@Override
public void onAnimationCancel(Animator animator) {}
@Override
public void onAnimationRepeat(Animator animator) {}
@Override
public void onAnimationEnd(Animator animator) {
mAnimationCompleted = true;
// Updating mDragState requires the WM lock so continues it on the out of
// AnimationThread.
mDragDropController.sendHandlerMessage(MSG_ANIMATION_END, null);
}
}
}