125 lines
4.0 KiB
Java
125 lines
4.0 KiB
Java
/*
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* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.openintents.openpgp.util;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.ServiceConnection;
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import android.os.IBinder;
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import org.openintents.openpgp.IOpenPgpService;
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public class OpenPgpServiceConnection {
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// callback interface
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public interface OnBound {
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public void onBound(IOpenPgpService service);
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public void onError(Exception e);
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}
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private Context mApplicationContext;
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private IOpenPgpService mService;
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private String mProviderPackageName;
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private OnBound mOnBoundListener;
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/**
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* Create new connection
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*
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* @param context
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* @param providerPackageName specify package name of OpenPGP provider,
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* e.g., "org.sufficientlysecure.keychain"
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*/
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public OpenPgpServiceConnection(Context context, String providerPackageName) {
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this.mApplicationContext = context.getApplicationContext();
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this.mProviderPackageName = providerPackageName;
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}
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/**
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* Create new connection with callback
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*
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* @param context
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* @param providerPackageName specify package name of OpenPGP provider,
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* e.g., "org.sufficientlysecure.keychain"
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* @param onBoundListener callback, executed when connection to service has been established
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*/
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public OpenPgpServiceConnection(Context context, String providerPackageName,
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OnBound onBoundListener) {
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this(context, providerPackageName);
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this.mOnBoundListener = onBoundListener;
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}
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public IOpenPgpService getService() {
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return mService;
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}
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public boolean isBound() {
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return (mService != null);
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}
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private ServiceConnection mServiceConnection = new ServiceConnection() {
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public void onServiceConnected(ComponentName name, IBinder service) {
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mService = IOpenPgpService.Stub.asInterface(service);
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if (mOnBoundListener != null) {
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mOnBoundListener.onBound(mService);
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}
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}
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public void onServiceDisconnected(ComponentName name) {
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mService = null;
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}
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};
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/**
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* If not already bound, bind to service!
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*
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* @return
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*/
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public void bindToService() {
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// if not already bound...
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if (mService == null) {
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try {
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Intent serviceIntent = new Intent(OpenPgpApi.SERVICE_INTENT);
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// NOTE: setPackage is very important to restrict the intent to this provider only!
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serviceIntent.setPackage(mProviderPackageName);
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boolean connect = mApplicationContext.bindService(serviceIntent, mServiceConnection,
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Context.BIND_AUTO_CREATE);
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if (!connect) {
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throw new Exception("bindService() returned false!");
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}
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} catch (Exception e) {
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if (mOnBoundListener != null) {
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mOnBoundListener.onError(e);
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}
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}
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} else {
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// already bound, but also inform client about it with callback
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if (mOnBoundListener != null) {
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mOnBoundListener.onBound(mService);
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}
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}
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}
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public void unbindFromService() {
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mApplicationContext.unbindService(mServiceConnection);
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}
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}
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