Add auto-hiding tabs when Bluetooth is not available.

Introduce a helper class for Bluetooth as well.

Change-Id: I89b0b4c42ef56ce3f5c2be3a1ea9d443aec04fce

android/sdremote/src/org/libreoffice/impressremote/activity/ComputersActivity.java

@@ -10,6 +10,7 @@ package org.libreoffice.impressremote.activity;
 
 import android.content.Intent;
 import android.os.Bundle;
+import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentTransaction;
 import android.support.v4.view.PagerAdapter;
 import android.support.v4.view.ViewPager;
@@ -19,6 +20,9 @@ import com.actionbarsherlock.app.SherlockFragmentActivity;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuItem;
 import org.libreoffice.impressremote.adapter.ComputersPagerAdapter;
+import org.libreoffice.impressremote.fragment.ComputersFragment;
+import org.libreoffice.impressremote.util.BluetoothOperator;
+import org.libreoffice.impressremote.util.FragmentOperator;
 import org.libreoffice.impressremote.util.Intents;
 import org.libreoffice.impressremote.R;
 
@@ -26,6 +30,20 @@ public class ComputersActivity extends SherlockFragmentActivity implements Actio
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        setUpContent();
+    }
+
+    private void setUpContent() {
+        if (BluetoothOperator.isAvailable()) {
+            setUpComputersLists();
+        }
+        else {
+            setUpComputersList();
+        }
+    }
+
+    private void setUpComputersLists() {
         setContentView(R.layout.activity_computers);
 
         setUpTabs();
@@ -35,12 +53,8 @@ public class ComputersActivity extends SherlockFragmentActivity implements Actio
     private void setUpTabs() {
         ActionBar aActionBar = getSupportActionBar();
 
-        aActionBar.addTab(buildBluetoothServersTab());
-        aActionBar.addTab(buildWiFiServersTab());
-    }
-
-    private ActionBar.Tab buildBluetoothServersTab() {
-        return buildActionBarTab(R.string.title_bluetooth);
+        aActionBar.addTab(buildActionBarTab(R.string.title_bluetooth));
+        aActionBar.addTab(buildActionBarTab(R.string.title_wifi));
     }
 
     private ActionBar.Tab buildActionBarTab(int aTitleResourceId) {
@@ -69,13 +83,11 @@ public class ComputersActivity extends SherlockFragmentActivity implements Actio
     public void onTabReselected(ActionBar.Tab aTab, FragmentTransaction aTransaction) {
     }
 
-    private ActionBar.Tab buildWiFiServersTab() {
-        return buildActionBarTab(R.string.title_wifi);
-    }
-
     private void setUpComputersPager() {
-        getComputersPager().setAdapter(buildComputersPagerAdapter());
-        getComputersPager().setOnPageChangeListener(this);
+        ViewPager aComputersPager = getComputersPager();
+
+        aComputersPager.setAdapter(buildComputersPagerAdapter());
+        aComputersPager.setOnPageChangeListener(this);
     }
 
     private PagerAdapter buildComputersPagerAdapter() {
@@ -95,6 +107,12 @@ public class ComputersActivity extends SherlockFragmentActivity implements Actio
     public void onPageScrollStateChanged(int aPosition) {
     }
 
+    private void setUpComputersList() {
+        Fragment aComputersFragment = ComputersFragment.newInstance(ComputersFragment.Type.WIFI);
+
+        FragmentOperator.setUpFragment(this, aComputersFragment);
+    }
+
     @Override
     public boolean onCreateOptionsMenu(Menu aMenu) {
         getSupportMenuInflater().inflate(R.menu.menu_action_bar_computers, aMenu);

android/sdremote/src/org/libreoffice/impressremote/communication/BluetoothServersFinder.java

@@ -22,6 +22,7 @@ import android.content.IntentFilter;
 import android.os.Handler;
 import android.support.v4.content.LocalBroadcastManager;
 
+import org.libreoffice.impressremote.util.BluetoothOperator;
 import org.libreoffice.impressremote.util.Intents;
 import org.libreoffice.impressremote.communication.Server.Protocol;
 
@@ -40,28 +41,23 @@ class BluetoothServersFinder extends BroadcastReceiver implements ServersFinder,
 
     @Override
     public void startSearch() {
-        if (!isBluetoothAvailable()) {
+        if (!BluetoothOperator.isAvailable()) {
             return;
         }
 
-        if (BluetoothAdapter.getDefaultAdapter().isDiscovering()) {
+        if (BluetoothOperator.getAdapter().isDiscovering()) {
             return;
         }
 
         setUpSearchResultsReceiver();
 
-        BluetoothAdapter.getDefaultAdapter().startDiscovery();
-    }
-
-    private boolean isBluetoothAvailable() {
-        return BluetoothAdapter.getDefaultAdapter() != null;
+        BluetoothOperator.getAdapter().startDiscovery();
     }
 
     private void setUpSearchResultsReceiver() {
-        IntentFilter aSearchResultsFilter = new IntentFilter(
-            BluetoothDevice.ACTION_FOUND);
-        aSearchResultsFilter
-            .addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
+        IntentFilter aSearchResultsFilter = new IntentFilter();
+        aSearchResultsFilter.addAction(BluetoothDevice.ACTION_FOUND);
+        aSearchResultsFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
 
         mContext.registerReceiver(this, aSearchResultsFilter);
     }
@@ -73,15 +69,12 @@ class BluetoothServersFinder extends BroadcastReceiver implements ServersFinder,
                 .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
 
             addServer(buildServer(aBluetoothDevice));
-
             callUpdatingServersList();
 
             return;
         }
 
-        if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED
-            .equals(aIntent.getAction())) {
-
+        if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(aIntent.getAction())) {
             startDiscoveryDelayed();
         }
     }
@@ -107,7 +100,7 @@ class BluetoothServersFinder extends BroadcastReceiver implements ServersFinder,
         // but check whether device is on in case the user manually
         // disabled bluetooth
 
-        if (!BluetoothAdapter.getDefaultAdapter().isEnabled()) {
+        if (!BluetoothOperator.getAdapter().isEnabled()) {
             return;
         }
 
@@ -117,18 +110,18 @@ class BluetoothServersFinder extends BroadcastReceiver implements ServersFinder,
 
     @Override
     public void run() {
-        BluetoothAdapter.getDefaultAdapter().startDiscovery();
+        BluetoothOperator.getAdapter().startDiscovery();
     }
 
     @Override
     public void stopSearch() {
-        if (!isBluetoothAvailable()) {
+        if (!BluetoothOperator.isAvailable()) {
             return;
         }
 
         tearDownSearchResultsReceiver();
 
-        BluetoothAdapter.getDefaultAdapter().cancelDiscovery();
+        BluetoothOperator.getAdapter().cancelDiscovery();
     }
 
     private void tearDownSearchResultsReceiver() {

android/sdremote/src/org/libreoffice/impressremote/communication/Server.java

@@ -32,6 +32,10 @@ public class Server implements Parcelable {
         return new Server(Protocol.TCP, aAddress, aName);
     }
 
+    public static Server newBluetoothInstance(String aAddress, String aName) {
+        return new Server(Protocol.BLUETOOTH, aAddress, aName);
+    }
+
     public Protocol getProtocol() {
         return mProtocol;
     }

android/sdremote/src/org/libreoffice/impressremote/util/BluetoothOperator.java

+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package org.libreoffice.impressremote.util;
+
+import android.bluetooth.BluetoothAdapter;
+
+public final class BluetoothOperator {
+    private BluetoothOperator() {
+    }
+
+    public static boolean isAvailable() {
+        return BluetoothAdapter.getDefaultAdapter() != null;
+    }
+
+    public static BluetoothAdapter getAdapter() {
+        return BluetoothAdapter.getDefaultAdapter();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

android/sdremote/src/org/libreoffice/impressremote/util/FragmentOperator.java

+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package org.libreoffice.impressremote.util;
+
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentActivity;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentTransaction;
+
+public final class FragmentOperator {
+    private FragmentOperator() {
+    }
+
+    public static void setUpFragment(FragmentActivity aActivity, Fragment aFragment) {
+        if (isFragmentSetUp(aActivity)) {
+            return;
+        }
+
+        installFragment(aActivity, aFragment);
+    }
+
+    private static boolean isFragmentSetUp(FragmentActivity aActivity) {
+        FragmentManager aFragmentManager = aActivity.getSupportFragmentManager();
+
+        return aFragmentManager.findFragmentById(android.R.id.content) != null;
+    }
+
+    private static void installFragment(FragmentActivity aActivity, Fragment aFragment) {
+        FragmentManager aFragmentManager = aActivity.getSupportFragmentManager();
+        FragmentTransaction aFragmentTransaction = aFragmentManager.beginTransaction();
+
+        aFragmentTransaction.add(android.R.id.content, aFragment);
+
+        aFragmentTransaction.commit();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */