| /* |
| * Copyright (C) 2010 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 android.os; |
| |
| /** |
| * TODO: Make this a public API? Let's see how it goes with a few use |
| * cases first. |
| * @hide |
| */ |
| public abstract class RemoteCallback implements Parcelable { |
| final Handler mHandler; |
| final IRemoteCallback mTarget; |
| |
| class DeliverResult implements Runnable { |
| final Bundle mResult; |
| |
| DeliverResult(Bundle result) { |
| mResult = result; |
| } |
| |
| public void run() { |
| onResult(mResult); |
| } |
| } |
| |
| class LocalCallback extends IRemoteCallback.Stub { |
| public void sendResult(Bundle bundle) { |
| mHandler.post(new DeliverResult(bundle)); |
| } |
| } |
| |
| static class RemoteCallbackProxy extends RemoteCallback { |
| RemoteCallbackProxy(IRemoteCallback target) { |
| super(target); |
| } |
| |
| protected void onResult(Bundle bundle) { |
| } |
| } |
| |
| public RemoteCallback(Handler handler) { |
| mHandler = handler; |
| mTarget = new LocalCallback(); |
| } |
| |
| RemoteCallback(IRemoteCallback target) { |
| mHandler = null; |
| mTarget = target; |
| } |
| |
| public void sendResult(Bundle bundle) throws RemoteException { |
| mTarget.sendResult(bundle); |
| } |
| |
| protected abstract void onResult(Bundle bundle); |
| |
| public boolean equals(Object otherObj) { |
| if (otherObj == null) { |
| return false; |
| } |
| try { |
| return mTarget.asBinder().equals(((RemoteCallback)otherObj) |
| .mTarget.asBinder()); |
| } catch (ClassCastException e) { |
| } |
| return false; |
| } |
| |
| public int hashCode() { |
| return mTarget.asBinder().hashCode(); |
| } |
| |
| public int describeContents() { |
| return 0; |
| } |
| |
| public void writeToParcel(Parcel out, int flags) { |
| out.writeStrongBinder(mTarget.asBinder()); |
| } |
| |
| public static final Parcelable.Creator<RemoteCallback> CREATOR |
| = new Parcelable.Creator<RemoteCallback>() { |
| public RemoteCallback createFromParcel(Parcel in) { |
| IBinder target = in.readStrongBinder(); |
| return target != null ? new RemoteCallbackProxy( |
| IRemoteCallback.Stub.asInterface(target)) : null; |
| } |
| |
| public RemoteCallback[] newArray(int size) { |
| return new RemoteCallback[size]; |
| } |
| }; |
| } |