86 lines
2.4 KiB
Java
86 lines
2.4 KiB
Java
/*
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* Copyright 2013-2015 µg Project Team
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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.microg.nlp;
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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 android.os.RemoteException;
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import android.util.Log;
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public abstract class AbstractBackendHelper implements ServiceConnection {
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private final Context context;
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protected final Intent serviceIntent;
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private boolean bound;
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private final String TAG;
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protected AbstractBackendHelper(String tag, Context context, Intent serviceIntent) {
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TAG = tag;
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this.context = context;
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this.serviceIntent = serviceIntent;
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}
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protected abstract void close() throws RemoteException;
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protected abstract boolean hasBackend();
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@Override
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public void onServiceConnected(ComponentName name, IBinder service) {
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bound = true;
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Log.d(TAG, "Bound to: " + name);
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}
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@Override
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public void onServiceDisconnected(ComponentName name) {
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bound = false;
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Log.d(TAG, "Unbound from: " + name);
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}
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public void unbind() {
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if (bound) {
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Log.d(TAG, "Unbinding from: " + serviceIntent);
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if (hasBackend()) {
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try {
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close();
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} catch (Exception e) {
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Log.w(TAG, e);
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}
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}
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try {
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context.unbindService(this);
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} catch (Exception e) {
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Log.w(TAG, e);
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}
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bound = false;
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}
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}
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public void bind() {
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if (!bound) {
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Log.d(TAG, "Binding to: " + serviceIntent);
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try {
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context.bindService(serviceIntent, this, Context.BIND_AUTO_CREATE);
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} catch (Exception e) {
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Log.w(TAG, e);
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}
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}
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}
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}
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