src/com/android/cellbroadcastreceiver/CellBroadcastListActivity.java - platform/packages/apps/CellBroadcastReceiver - Git at Google

 /*
  * Copyright (C) 2011 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 com.android.cellbroadcastreceiver;

 import android.app.AlertDialog;
 import android.app.ListActivity;
 import android.app.NotificationManager;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
 import android.content.Intent;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 import android.os.Bundle;
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnCreateContextMenuListener;
 import android.widget.ListView;
 import android.widget.TextView;

 /**
  * This activity provides a list view of received cell broadcasts.
  */
 public class CellBroadcastListActivity extends ListActivity {
     private static final String TAG = "CellBroadcastListActivity";

     // IDs of the main menu items.
     public static final int MENU_DELETE_ALL           = 3;
     public static final int MENU_PREFERENCES          = 4;

     // IDs of the context menu items for the list of broadcasts.
     public static final int MENU_DELETE               = 0;
     public static final int MENU_VIEW                 = 1;

     private CellBroadcastListAdapter mListAdapter;

     private SQLiteDatabase mBroadcastDb;

     private Cursor mAdapterCursor;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.cell_broadcast_list_screen);

         ListView listView = getListView();
         listView.setOnCreateContextMenuListener(mOnCreateContextMenuListener);

         if (mBroadcastDb == null) {
             CellBroadcastDatabase.DatabaseHelper helper =
                     new CellBroadcastDatabase.DatabaseHelper(this);
             mBroadcastDb = helper.getReadableDatabase();
         }

         if (mAdapterCursor == null) {
             mAdapterCursor = CellBroadcastDatabase.getCursor(mBroadcastDb);
         }

         mListAdapter = new CellBroadcastListAdapter(this, mAdapterCursor);
         setListAdapter(mListAdapter);

         CellBroadcastDatabaseService.setActiveListActivity(this);

         parseIntent(getIntent());
     }

     @Override
     protected void onDestroy() {
         if (mAdapterCursor != null) {
             mAdapterCursor.close();
             mAdapterCursor = null;
         }
         if (mBroadcastDb != null) {
             mBroadcastDb.close();
             mBroadcastDb = null;
         }
         CellBroadcastDatabaseService.setActiveListActivity(null);
         super.onDestroy();
     }

     /** Callback from CellBroadcastDatabaseService after content changes. */
     void databaseContentChanged() {
         runOnUiThread(new Runnable() {
             public void run() {
                 mAdapterCursor.requery();
             }
         });
     }

     @Override
     protected void onNewIntent(Intent intent) {
         // TODO: how do multiple messages stack together?
         // removeDialog(DIALOG_SHOW_MESSAGE);
         parseIntent(intent);
     }

     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
         menu.clear();

         if (mListAdapter.getCount() > 0) {
             menu.add(0, MENU_DELETE_ALL, 0, R.string.menu_delete_all).setIcon(
                     android.R.drawable.ic_menu_delete);
         }

         menu.add(0, MENU_PREFERENCES, 0, R.string.menu_preferences).setIcon(
                 android.R.drawable.ic_menu_preferences);

         return true;
     }

     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch(item.getItemId()) {
             case MENU_DELETE_ALL:
                 confirmDeleteThread(-1);
                 break;

             case MENU_PREFERENCES:
                 Intent intent = new Intent(this, CellBroadcastSettings.class);
                 startActivityIfNeeded(intent, -1);
                 break;

             default:
                 return true;
         }
         return false;
     }

     @Override
     protected void onListItemClick(ListView l, View v, int position, long id) {
         Cursor cursor = mListAdapter.getCursor();
         if (cursor != null && cursor.getPosition() >= 0) {
             showDialogAndMarkRead(cursor);
         }
     }

     private final OnCreateContextMenuListener mOnCreateContextMenuListener =
             new OnCreateContextMenuListener() {
                 public void onCreateContextMenu(ContextMenu menu, View v,
                         ContextMenuInfo menuInfo) {
                     menu.add(0, MENU_VIEW, 0, R.string.menu_view);
                     menu.add(0, MENU_DELETE, 0, R.string.menu_delete);
                 }
             };

     @Override
     public boolean onContextItemSelected(MenuItem item) {
         Cursor cursor = mListAdapter.getCursor();
         if (cursor != null && cursor.getPosition() >= 0) {
             switch (item.getItemId()) {
                 case MENU_DELETE:
                     confirmDeleteThread(cursor.getLong(CellBroadcastDatabase.COLUMN_ID));
                     break;

                 case MENU_VIEW:
                     showDialogAndMarkRead(cursor);
                     break;

                 default:
                     break;
             }
         }
         return super.onContextItemSelected(item);
     }

     private void showDialogAndMarkRead(Cursor cursor) {
         CellBroadcastMessage cbm = CellBroadcastMessage.createFromCursor(cursor);
         boolean isAlertMessage = cbm.isPublicAlertMessage() || CellBroadcastConfigService
                 .isOperatorDefinedEmergencyId(cbm.getMessageIdentifier());
         // show emergency alerts with the warning icon, but don't play alert tone
         CellBroadcastAlertDialog dialog = new CellBroadcastAlertDialog(this,
                 cbm.getDialogTitleResource(), cbm.getMessageBody(),
                 isAlertMessage, cbm.getDeliveryTime());
         dialog.show();
     }

     /**
      * Start the process of putting up a dialog to confirm deleting a broadcast.
      * @param rowId the row ID of the broadcast to delete, or -1 to delete all broadcasts
      */
     public void confirmDeleteThread(long rowId) {
         DeleteThreadListener listener = new DeleteThreadListener(rowId);
         confirmDeleteThreadDialog(listener, (rowId == -1), this);
     }

     /**
      * Build and show the proper delete broadcast dialog. The UI is slightly different
      * depending on whether there are locked messages in the thread(s) and whether we're
      * deleting a single broadcast or all broadcasts.
      * @param listener gets called when the delete button is pressed
      * @param deleteAll whether to show a single thread or all threads UI
      * @param context used to load the various UI elements
      */
     public static void confirmDeleteThreadDialog(DeleteThreadListener listener,
             boolean deleteAll, Context context) {
         View contents = View.inflate(context, R.layout.delete_broadcast_dialog_view, null);
         TextView msg = (TextView)contents.findViewById(R.id.message);
         msg.setText(deleteAll
                 ? R.string.confirm_delete_all_broadcasts
                         : R.string.confirm_delete_broadcast);

         AlertDialog.Builder builder = new AlertDialog.Builder(context);
         builder.setTitle(R.string.confirm_dialog_title)
             .setIcon(android.R.drawable.ic_dialog_alert)
         .setCancelable(true)
         .setPositiveButton(R.string.button_delete, listener)
         .setNegativeButton(R.string.button_cancel, null)
         .setView(contents)
         .show();
     }

     public class DeleteThreadListener implements OnClickListener {
         private final long mRowId;

         public DeleteThreadListener(long rowId) {
             mRowId = rowId;
         }

         public void onClick(DialogInterface dialog, int whichButton) {
             if (mRowId != -1) {
                 // delete from database on a separate service thread
                 Intent dbWriteIntent = new Intent(CellBroadcastListActivity.this,
                         CellBroadcastDatabaseService.class);
                 dbWriteIntent.setAction(CellBroadcastDatabaseService.ACTION_DELETE_BROADCAST);
                 dbWriteIntent.putExtra(CellBroadcastDatabaseService.DATABASE_ROW_ID_EXTRA, mRowId);
                 startService(dbWriteIntent);
             } else {
                 // delete from database on a separate service thread
                 Intent dbWriteIntent = new Intent(CellBroadcastListActivity.this,
                         CellBroadcastDatabaseService.class);
                 dbWriteIntent.setAction(CellBroadcastDatabaseService.ACTION_DELETE_ALL_BROADCASTS);
                 startService(dbWriteIntent);
             }
             dialog.dismiss();
         }
     }

     private void parseIntent(Intent intent) {
         if (intent == null) {
             return;
         }
         Bundle extras = intent.getExtras();
         if (extras == null) {
             return;
         }

         CellBroadcastMessage cbm = extras.getParcelable(CellBroadcastMessage.SMS_CB_MESSAGE_EXTRA);
         int notificationId = extras.getInt(CellBroadcastAlertService.SMS_CB_NOTIFICATION_ID_EXTRA);

         // Dismiss the notification that brought us here.
         NotificationManager notificationManager =
             (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
         notificationManager.cancel(notificationId);

         boolean isEmergencyAlert = cbm.isPublicAlertMessage() || CellBroadcastConfigService
                 .isOperatorDefinedEmergencyId(cbm.getMessageIdentifier());

         CellBroadcastAlertDialog dialog = new CellBroadcastAlertDialog(this,
                 cbm.getDialogTitleResource(), cbm.getMessageBody(),
                 isEmergencyAlert, cbm.getDeliveryTime());
         dialog.show();
     }
 }
	/*
	* Copyright (C) 2011 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 com.android.cellbroadcastreceiver;

	import android.app.AlertDialog;
	import android.app.ListActivity;
	import android.app.NotificationManager;
	import android.content.Context;
	import android.content.DialogInterface;
	import android.content.DialogInterface.OnClickListener;
	import android.content.Intent;
	import android.database.Cursor;
	import android.database.sqlite.SQLiteDatabase;
	import android.os.Bundle;
	import android.view.ContextMenu;
	import android.view.ContextMenu.ContextMenuInfo;
	import android.view.Menu;
	import android.view.MenuItem;
	import android.view.View;
	import android.view.View.OnCreateContextMenuListener;
	import android.widget.ListView;
	import android.widget.TextView;

	/**
	* This activity provides a list view of received cell broadcasts.
	*/
	public class CellBroadcastListActivity extends ListActivity {
	private static final String TAG = "CellBroadcastListActivity";

	// IDs of the main menu items.
	public static final int MENU_DELETE_ALL = 3;
	public static final int MENU_PREFERENCES = 4;

	// IDs of the context menu items for the list of broadcasts.
	public static final int MENU_DELETE = 0;
	public static final int MENU_VIEW = 1;

	private CellBroadcastListAdapter mListAdapter;

	private SQLiteDatabase mBroadcastDb;

	private Cursor mAdapterCursor;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.cell_broadcast_list_screen);

	ListView listView = getListView();
	listView.setOnCreateContextMenuListener(mOnCreateContextMenuListener);

	if (mBroadcastDb == null) {
	CellBroadcastDatabase.DatabaseHelper helper =
	new CellBroadcastDatabase.DatabaseHelper(this);
	mBroadcastDb = helper.getReadableDatabase();
	}

	if (mAdapterCursor == null) {
	mAdapterCursor = CellBroadcastDatabase.getCursor(mBroadcastDb);
	}

	mListAdapter = new CellBroadcastListAdapter(this, mAdapterCursor);
	setListAdapter(mListAdapter);

	CellBroadcastDatabaseService.setActiveListActivity(this);

	parseIntent(getIntent());
	}

	@Override
	protected void onDestroy() {
	if (mAdapterCursor != null) {
	mAdapterCursor.close();
	mAdapterCursor = null;
	}
	if (mBroadcastDb != null) {
	mBroadcastDb.close();
	mBroadcastDb = null;
	}
	CellBroadcastDatabaseService.setActiveListActivity(null);
	super.onDestroy();
	}

	/** Callback from CellBroadcastDatabaseService after content changes. */
	void databaseContentChanged() {
	runOnUiThread(new Runnable() {
	public void run() {
	mAdapterCursor.requery();
	}
	});
	}

	@Override
	protected void onNewIntent(Intent intent) {
	// TODO: how do multiple messages stack together?
	// removeDialog(DIALOG_SHOW_MESSAGE);
	parseIntent(intent);
	}

	@Override
	public boolean onPrepareOptionsMenu(Menu menu) {
	menu.clear();

	if (mListAdapter.getCount() > 0) {
	menu.add(0, MENU_DELETE_ALL, 0, R.string.menu_delete_all).setIcon(
	android.R.drawable.ic_menu_delete);
	}

	menu.add(0, MENU_PREFERENCES, 0, R.string.menu_preferences).setIcon(
	android.R.drawable.ic_menu_preferences);

	return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	switch(item.getItemId()) {
	case MENU_DELETE_ALL:
	confirmDeleteThread(-1);
	break;

	case MENU_PREFERENCES:
	Intent intent = new Intent(this, CellBroadcastSettings.class);
	startActivityIfNeeded(intent, -1);
	break;

	default:
	return true;
	}
	return false;
	}

	@Override
	protected void onListItemClick(ListView l, View v, int position, long id) {
	Cursor cursor = mListAdapter.getCursor();
	if (cursor != null && cursor.getPosition() >= 0) {
	showDialogAndMarkRead(cursor);
	}
	}

	private final OnCreateContextMenuListener mOnCreateContextMenuListener =
	new OnCreateContextMenuListener() {
	public void onCreateContextMenu(ContextMenu menu, View v,
	ContextMenuInfo menuInfo) {
	menu.add(0, MENU_VIEW, 0, R.string.menu_view);
	menu.add(0, MENU_DELETE, 0, R.string.menu_delete);
	}
	};

	@Override
	public boolean onContextItemSelected(MenuItem item) {
	Cursor cursor = mListAdapter.getCursor();
	if (cursor != null && cursor.getPosition() >= 0) {
	switch (item.getItemId()) {
	case MENU_DELETE:
	confirmDeleteThread(cursor.getLong(CellBroadcastDatabase.COLUMN_ID));
	break;

	case MENU_VIEW:
	showDialogAndMarkRead(cursor);
	break;

	default:
	break;
	}
	}
	return super.onContextItemSelected(item);
	}

	private void showDialogAndMarkRead(Cursor cursor) {
	CellBroadcastMessage cbm = CellBroadcastMessage.createFromCursor(cursor);
	boolean isAlertMessage = cbm.isPublicAlertMessage() \|\| CellBroadcastConfigService
	.isOperatorDefinedEmergencyId(cbm.getMessageIdentifier());
	// show emergency alerts with the warning icon, but don't play alert tone
	CellBroadcastAlertDialog dialog = new CellBroadcastAlertDialog(this,
	cbm.getDialogTitleResource(), cbm.getMessageBody(),
	isAlertMessage, cbm.getDeliveryTime());
	dialog.show();
	}

	/**
	* Start the process of putting up a dialog to confirm deleting a broadcast.
	* @param rowId the row ID of the broadcast to delete, or -1 to delete all broadcasts
	*/
	public void confirmDeleteThread(long rowId) {
	DeleteThreadListener listener = new DeleteThreadListener(rowId);
	confirmDeleteThreadDialog(listener, (rowId == -1), this);
	}

	/**
	* Build and show the proper delete broadcast dialog. The UI is slightly different
	* depending on whether there are locked messages in the thread(s) and whether we're
	* deleting a single broadcast or all broadcasts.
	* @param listener gets called when the delete button is pressed
	* @param deleteAll whether to show a single thread or all threads UI
	* @param context used to load the various UI elements
	*/
	public static void confirmDeleteThreadDialog(DeleteThreadListener listener,
	boolean deleteAll, Context context) {
	View contents = View.inflate(context, R.layout.delete_broadcast_dialog_view, null);
	TextView msg = (TextView)contents.findViewById(R.id.message);
	msg.setText(deleteAll
	? R.string.confirm_delete_all_broadcasts
	: R.string.confirm_delete_broadcast);

	AlertDialog.Builder builder = new AlertDialog.Builder(context);
	builder.setTitle(R.string.confirm_dialog_title)
	.setIcon(android.R.drawable.ic_dialog_alert)
	.setCancelable(true)
	.setPositiveButton(R.string.button_delete, listener)
	.setNegativeButton(R.string.button_cancel, null)
	.setView(contents)
	.show();
	}

	public class DeleteThreadListener implements OnClickListener {
	private final long mRowId;

	public DeleteThreadListener(long rowId) {
	mRowId = rowId;
	}

	public void onClick(DialogInterface dialog, int whichButton) {
	if (mRowId != -1) {
	// delete from database on a separate service thread
	Intent dbWriteIntent = new Intent(CellBroadcastListActivity.this,
	CellBroadcastDatabaseService.class);
	dbWriteIntent.setAction(CellBroadcastDatabaseService.ACTION_DELETE_BROADCAST);
	dbWriteIntent.putExtra(CellBroadcastDatabaseService.DATABASE_ROW_ID_EXTRA, mRowId);
	startService(dbWriteIntent);
	} else {
	// delete from database on a separate service thread
	Intent dbWriteIntent = new Intent(CellBroadcastListActivity.this,
	CellBroadcastDatabaseService.class);
	dbWriteIntent.setAction(CellBroadcastDatabaseService.ACTION_DELETE_ALL_BROADCASTS);
	startService(dbWriteIntent);
	}
	dialog.dismiss();
	}
	}

	private void parseIntent(Intent intent) {
	if (intent == null) {
	return;
	}
	Bundle extras = intent.getExtras();
	if (extras == null) {
	return;
	}

	CellBroadcastMessage cbm = extras.getParcelable(CellBroadcastMessage.SMS_CB_MESSAGE_EXTRA);
	int notificationId = extras.getInt(CellBroadcastAlertService.SMS_CB_NOTIFICATION_ID_EXTRA);

	// Dismiss the notification that brought us here.
	NotificationManager notificationManager =
	(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
	notificationManager.cancel(notificationId);

	boolean isEmergencyAlert = cbm.isPublicAlertMessage() \|\| CellBroadcastConfigService
	.isOperatorDefinedEmergencyId(cbm.getMessageIdentifier());

	CellBroadcastAlertDialog dialog = new CellBroadcastAlertDialog(this,
	cbm.getDialogTitleResource(), cbm.getMessageBody(),
	isEmergencyAlert, cbm.getDeliveryTime());
	dialog.show();
	}
	}