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/*
* 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];
}
};
}
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