Proxy configurators

src/org/adblockplus/android/ServiceBinder.java

+/*
+ * This file is part of Adblock Plus <http://adblockplus.org/>,
+ * Copyright (C) 2006-2014 Eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.adblockplus.android;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.IBinder;
+
+public class ServiceBinder
+{
+  private final Context context;
+  private volatile ProxyService proxyService;
+  private final ProxyServiceConnection proxyServiceConnection;
+  private OnConnectHandler onConnectHandler = null;
+
+  public ServiceBinder(final Context context)
+  {
+    this.context = context;
+    this.proxyServiceConnection = new ProxyServiceConnection(this);
+  }
+
+  public ServiceBinder setOnConnectHandler(final OnConnectHandler handler)
+  {
+    this.onConnectHandler = handler;
+    return this;
+  }
+
+  public synchronized void bind()
+  {
+    if (this.proxyService == null)
+    {
+      this.context.bindService(new Intent(this.context, ProxyService.class), this.proxyServiceConnection, 0);
+    }
+  }
+
+  public ProxyService get()
+  {
+    return this.proxyService;
+  }
+
+  public void unbind()
+  {
+    this.context.unbindService(this.proxyServiceConnection);
+    this.proxyService = null;
+  }
+
+  private static class ProxyServiceConnection implements ServiceConnection
+  {
+    private final ServiceBinder binder;
+
+    private ProxyServiceConnection(final ServiceBinder binder)
+    {
+      this.binder = binder;
+    }
+
+    @Override
+    public void onServiceConnected(final ComponentName name, final IBinder service)
+    {
+      final ProxyService proxyService = ((ProxyService.LocalBinder) service).getService();
+      final OnConnectHandler handler = this.binder.onConnectHandler;
+
+      this.binder.proxyService = proxyService;
+
+      if (handler != null)
+      {
+        handler.onConnect(proxyService);
+      }
+    }
+
+    @Override
+    public void onServiceDisconnected(final ComponentName name)
+    {
+      this.binder.proxyService = null;
+    }
+  }
+
+  public interface OnConnectHandler
+  {
+    public void onConnect(final ProxyService proxyService);
+  }
+}