| /* |
| * Copyright (C) 2006 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.content; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IIntentSender; |
| import android.content.IIntentReceiver; |
| import android.os.Bundle; |
| import android.os.RemoteException; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.util.AndroidException; |
| |
| |
| /** |
| * A description of an Intent and target action to perform with it. |
| * The returned object can be |
| * handed to other applications so that they can perform the action you |
| * described on your behalf at a later time. |
| * |
| * <p>By giving a IntentSender to another application, |
| * you are granting it the right to perform the operation you have specified |
| * as if the other application was yourself (with the same permissions and |
| * identity). As such, you should be careful about how you build the IntentSender: |
| * often, for example, the base Intent you supply will have the component |
| * name explicitly set to one of your own components, to ensure it is ultimately |
| * sent there and nowhere else. |
| * |
| * <p>A IntentSender itself is simply a reference to a token maintained by |
| * the system describing the original data used to retrieve it. This means |
| * that, even if its owning application's process is killed, the |
| * IntentSender itself will remain usable from other processes that |
| * have been given it. If the creating application later re-retrieves the |
| * same kind of IntentSender (same operation, same Intent action, data, |
| * categories, and components, and same flags), it will receive a IntentSender |
| * representing the same token if that is still valid. |
| * |
| */ |
| public class IntentSender implements Parcelable { |
| private final IIntentSender mTarget; |
| |
| /** |
| * Exception thrown when trying to send through a PendingIntent that |
| * has been canceled or is otherwise no longer able to execute the request. |
| */ |
| public static class SendIntentException extends AndroidException { |
| public SendIntentException() { |
| } |
| |
| public SendIntentException(String name) { |
| super(name); |
| } |
| |
| public SendIntentException(Exception cause) { |
| super(cause); |
| } |
| } |
| |
| /** |
| * Callback interface for discovering when a send operation has |
| * completed. Primarily for use with a IntentSender that is |
| * performing a broadcast, this provides the same information as |
| * calling {@link Context#sendOrderedBroadcast(Intent, String, |
| * android.content.BroadcastReceiver, Handler, int, String, Bundle) |
| * Context.sendBroadcast()} with a final BroadcastReceiver. |
| */ |
| public interface OnFinished { |
| /** |
| * Called when a send operation as completed. |
| * |
| * @param IntentSender The IntentSender this operation was sent through. |
| * @param intent The original Intent that was sent. |
| * @param resultCode The final result code determined by the send. |
| * @param resultData The final data collected by a broadcast. |
| * @param resultExtras The final extras collected by a broadcast. |
| */ |
| void onSendFinished(IntentSender IntentSender, Intent intent, |
| int resultCode, String resultData, Bundle resultExtras); |
| } |
| |
| private static class FinishedDispatcher extends IIntentReceiver.Stub |
| implements Runnable { |
| private final IntentSender mIntentSender; |
| private final OnFinished mWho; |
| private final Handler mHandler; |
| private Intent mIntent; |
| private int mResultCode; |
| private String mResultData; |
| private Bundle mResultExtras; |
| FinishedDispatcher(IntentSender pi, OnFinished who, Handler handler) { |
| mIntentSender = pi; |
| mWho = who; |
| mHandler = handler; |
| } |
| public void performReceive(Intent intent, int resultCode, |
| String data, Bundle extras, boolean serialized) { |
| mIntent = intent; |
| mResultCode = resultCode; |
| mResultData = data; |
| mResultExtras = extras; |
| if (mHandler == null) { |
| run(); |
| } else { |
| mHandler.post(this); |
| } |
| } |
| public void run() { |
| mWho.onSendFinished(mIntentSender, mIntent, mResultCode, |
| mResultData, mResultExtras); |
| } |
| } |
| |
| /** |
| * Perform the operation associated with this IntentSender, allowing the |
| * caller to specify information about the Intent to use and be notified |
| * when the send has completed. |
| * |
| * @param context The Context of the caller. This may be null if |
| * <var>intent</var> is also null. |
| * @param code Result code to supply back to the IntentSender's target. |
| * @param intent Additional Intent data. See {@link Intent#fillIn |
| * Intent.fillIn()} for information on how this is applied to the |
| * original Intent. Use null to not modify the original Intent. |
| * @param onFinished The object to call back on when the send has |
| * completed, or null for no callback. |
| * @param handler Handler identifying the thread on which the callback |
| * should happen. If null, the callback will happen from the thread |
| * pool of the process. |
| * |
| * |
| * @throws SendIntentException Throws CanceledIntentException if the IntentSender |
| * is no longer allowing more intents to be sent through it. |
| */ |
| public void sendIntent(Context context, int code, Intent intent, |
| OnFinished onFinished, Handler handler) throws SendIntentException { |
| try { |
| String resolvedType = intent != null ? |
| intent.resolveTypeIfNeeded(context.getContentResolver()) |
| : null; |
| int res = mTarget.send(code, intent, resolvedType, |
| onFinished != null |
| ? new FinishedDispatcher(this, onFinished, handler) |
| : null); |
| if (res < 0) { |
| throw new SendIntentException(); |
| } |
| } catch (RemoteException e) { |
| throw new SendIntentException(); |
| } |
| } |
| |
| /** |
| * Comparison operator on two IntentSender objects, such that true |
| * is returned then they both represent the same operation from the |
| * same package. |
| */ |
| @Override |
| public boolean equals(Object otherObj) { |
| if (otherObj instanceof IntentSender) { |
| return mTarget.asBinder().equals(((IntentSender)otherObj) |
| .mTarget.asBinder()); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return mTarget.asBinder().hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(128); |
| sb.append("IntentSender{"); |
| sb.append(Integer.toHexString(System.identityHashCode(this))); |
| sb.append(": "); |
| sb.append(mTarget != null ? mTarget.asBinder() : null); |
| sb.append('}'); |
| return sb.toString(); |
| } |
| |
| public int describeContents() { |
| return 0; |
| } |
| |
| public void writeToParcel(Parcel out, int flags) { |
| out.writeStrongBinder(mTarget.asBinder()); |
| } |
| |
| public static final Parcelable.Creator<IntentSender> CREATOR |
| = new Parcelable.Creator<IntentSender>() { |
| public IntentSender createFromParcel(Parcel in) { |
| IBinder target = in.readStrongBinder(); |
| return target != null ? new IntentSender(target) : null; |
| } |
| |
| public IntentSender[] newArray(int size) { |
| return new IntentSender[size]; |
| } |
| }; |
| |
| /** |
| * Convenience function for writing either a IntentSender or null pointer to |
| * a Parcel. You must use this with {@link #readIntentSenderOrNullFromParcel} |
| * for later reading it. |
| * |
| * @param sender The IntentSender to write, or null. |
| * @param out Where to write the IntentSender. |
| */ |
| public static void writeIntentSenderOrNullToParcel(IntentSender sender, |
| Parcel out) { |
| out.writeStrongBinder(sender != null ? sender.mTarget.asBinder() |
| : null); |
| } |
| |
| /** |
| * Convenience function for reading either a Messenger or null pointer from |
| * a Parcel. You must have previously written the Messenger with |
| * {@link #writeIntentSenderOrNullToParcel}. |
| * |
| * @param in The Parcel containing the written Messenger. |
| * |
| * @return Returns the Messenger read from the Parcel, or null if null had |
| * been written. |
| */ |
| public static IntentSender readIntentSenderOrNullFromParcel(Parcel in) { |
| IBinder b = in.readStrongBinder(); |
| return b != null ? new IntentSender(b) : null; |
| } |
| |
| protected IntentSender(IIntentSender target) { |
| mTarget = target; |
| } |
| |
| protected IntentSender(IBinder target) { |
| mTarget = IIntentSender.Stub.asInterface(target); |
| } |
| } |