/android/export-contacts

/*

 * Doit.java

 *

 * Copyright (C) 2011 Tim Marston <tim@ed.am>

 *

 * This file is part of the Export Contacts program (hereafter referred

 * to as "this program"). For more information, see

 * http://ed.am/dev/android/export-contacts

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

 */

package am.ed.exportcontacts;

import android.app.AlertDialog;

import android.app.Dialog;

import android.content.DialogInterface;

import android.content.Intent;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.View;

import android.widget.Button;

import android.widget.ProgressBar;

import android.widget.TextView;

import android.widget.Toast;

public class Doit extends WizardActivity

{

	private final static int DIALOG_ERROR = 0;

	private final static int DIALOG_CONTINUEORABORT = 1;

	public final static int MESSAGE_ALLDONE = 0;

	public final static int MESSAGE_ABORT = 1;

	public final static int MESSAGE_ERROR = 2;

	public final static int MESSAGE_CONTINUEORABORT = 3;

	public final static int MESSAGE_SETPROGRESSMESSAGE = 4;

	public final static int MESSAGE_SETMAXPROGRESS = 5;

	public final static int MESSAGE_SETTMPPROGRESS = 6;

	public final static int MESSAGE_SETPROGRESS = 7;

	public final static int MESSAGE_CONTACTWRITTEN = 8;

	public final static int MESSAGE_CONTACTSKIPPED = 9;

	public final static int NEXT_BEGIN = 0;

	public final static int NEXT_CLOSE = 1;

	private boolean _started_progress;

	private int _max_progress;

	private int _tmp_progress;

	private int _progress;

	protected String _dialog_message;

	private int _next_action;

	private int _current_dialog_id;

	private int _count_writes;

	private int _count_skips;

	protected Exporter _exporter = null;

	public Handler _handler;

	public class DoitHandler extends Handler

	{

		@Override

		public void handleMessage( Message msg ) {

			switch( msg.what )

			{

			case MESSAGE_ALLDONE:

				( (TextView)findViewById( R.id.doit_alldone ) ).

					setVisibility( View.VISIBLE );

				( (Button)findViewById( R.id.back ) ).setEnabled( false );

				updateNext( NEXT_CLOSE );

				findViewById( R.id.doit_abort_disp ).setVisibility(

					View.GONE );

				break;

			case MESSAGE_ABORT:

				manualAbort();

				break;

			case MESSAGE_ERROR:

				_dialog_message = (String)msg.obj;

				showDialog( DIALOG_ERROR );

				break;

			case MESSAGE_CONTINUEORABORT:

				_dialog_message = (String)msg.obj;

				showDialog( DIALOG_CONTINUEORABORT );

				break;

			case MESSAGE_SETPROGRESSMESSAGE:

				( (TextView)findViewById( R.id.doit_percentage ) ).

					setText( (String)msg.obj );

				break;

			case MESSAGE_SETMAXPROGRESS:

				if( _max_progress > 0 ) {

					if( _tmp_progress == _max_progress - 1 )

						_tmp_progress = (Integer)msg.obj;

					if( _progress == _max_progress - 1 )

						_progress = (Integer)msg.obj;

				}

				_max_progress = (Integer)msg.obj;

				updateProgress();

				break;

			case MESSAGE_SETTMPPROGRESS:

				_tmp_progress = (Integer)msg.obj;

				updateProgress();

				break;

			case MESSAGE_SETPROGRESS:

				_started_progress = true;

				_progress = (Integer)msg.obj;

				updateProgress();

				break;

			case MESSAGE_CONTACTWRITTEN:

				_count_writes++;

				updateStats();

				break;

			case MESSAGE_CONTACTSKIPPED:

				_count_skips++;

				updateStats();

				break;

			default:

				super.handleMessage( msg );

			}

		}

	}

	@Override

	protected void onCreate(Bundle saved_instance_state)

	{

		setContentView( R.layout.doit );

		super.onCreate( saved_instance_state );

		// hide page 2

		( findViewById( R.id.doit_page_2 ) ).setVisibility( View.GONE );

		// set up abort button

		Button begin = (Button)findViewById( R.id.abort );

		begin.setOnClickListener( new View.OnClickListener() {

			public void onClick( View view ) {

				manualAbort();

			}

		} );

		_started_progress = false;

		_max_progress = 0;

		_tmp_progress = 0;

		_progress = 0;

		_handler = new DoitHandler();

		_count_writes = 0;

		_count_skips = 0;

		updateNext( NEXT_BEGIN );

		updateProgress();

		updateStats();

	}

	@Override

	protected void onPause()

	{

		super.onPause();

		// saving the state of an export sounds complicated! Lets just abort!

		if( _next_action != NEXT_CLOSE )

			manualAbort( true );

	}

	@Override

	protected Dialog onCreateDialog( int id )

	{

		switch( id )

		{

		case DIALOG_ERROR:

			return new AlertDialog.Builder( this )

				.setIcon( R.drawable.alert_dialog_icon )

				.setTitle( R.string.error_title )

				.setMessage( "" )

				.setPositiveButton( R.string.error_ok,

					new DialogInterface.OnClickListener() {

						public void onClick( DialogInterface dialog,

							int whichButton )

						{

							if( Doit.this != null )

								Doit.this._exporter.wake();

						}

					} )

				.setOnCancelListener( _dialog_on_cancel_listener )

				.create();

		case DIALOG_CONTINUEORABORT:

			return new AlertDialog.Builder( this )

				.setIcon( R.drawable.alert_dialog_icon )

				.setTitle( R.string.error_title )

				.setMessage( "" )

				.setPositiveButton( R.string.error_continue,

					new DialogInterface.OnClickListener() {

						public void onClick( DialogInterface dialog,

							int which_button )

						{

							if( Doit.this != null )

								Doit.this._exporter.wake(

									Exporter.RESPONSE_POSITIVE );

						}

					} )

				.setNegativeButton( R.string.error_abort,

					new DialogInterface.OnClickListener() {

						public void onClick( DialogInterface dialog,

							int which_button )

						{

							if( Doit.this != null )

								Doit.this._exporter.wake(

									Exporter.RESPONSE_NEGATIVE );

						}

					} )

				.setOnCancelListener( _dialog_on_cancel_listener )

				.create();

		}

		return null;

	}

	@Override

	protected void onNext()

	{

		Button next = (Button)findViewById( R.id.next );

		next.setEnabled( false );

		switch( _next_action )

		{

		case NEXT_BEGIN:

			exportContacts();

			break;

		case NEXT_CLOSE:

			setResult( RESULT_OK );

			finish();

			break;

		}

	}

	private void manualAbort()

	{

		manualAbort( false );

	}

	private void manualAbort( boolean show_toaster_popup )

	{

		abortExport( show_toaster_popup );

		updateNext( NEXT_CLOSE );

		( (Button)findViewById( R.id.back ) ).setEnabled( true );

		findViewById( R.id.doit_abort_disp ).setVisibility( View.GONE );

		( (TextView)findViewById( R.id.doit_aborted ) ).

			setVisibility( View.VISIBLE );

		( (TextView)findViewById( R.id.doit_alldone ) ).

			setVisibility( View.GONE );

		// close any open dialogs

		try {

			dismissDialog( _current_dialog_id );

		}

		catch( Exception e ) {

			// ignore errors

		}

	}

	private void updateNext( int next_action )

	{

		Button next = (Button)findViewById( R.id.next );

		switch( next_action ) {

		case NEXT_BEGIN:	next.setText( R.string.doit_begin ); break;

		case NEXT_CLOSE:	next.setText( R.string.doit_close ); break;

		}

		next.setEnabled( true );

		_next_action = next_action;

	}

	private DialogInterface.OnCancelListener _dialog_on_cancel_listener =

		new DialogInterface.OnCancelListener()

	{

		public void onCancel( DialogInterface dialog ) {

			manualAbort();

		}

	};

	@Override

	protected void onActivityResult( int request_code, int result_code,

		Intent data )

	{

		// if we're cancelling, abort any export

		if( result_code == RESULT_CANCELED )

			abortExport( true );

	}

	@Override

	protected void onPrepareDialog( int id, Dialog dialog )

	{

		_current_dialog_id = id;

		switch( id )

		{

		case DIALOG_ERROR:	// fall through

		case DIALOG_CONTINUEORABORT:

			// set dialog message

			( (AlertDialog)dialog ).setMessage( _dialog_message );

			break;

		}

		super.onPrepareDialog( id, dialog );

	}

	private void exportContacts()

	{

		// switch interfaces

		( findViewById( R.id.doit_page_1 ) ).setVisibility( View.GONE );

		( findViewById( R.id.doit_page_2 ) ).setVisibility( View.VISIBLE );

		// disable back button

		( (Button)findViewById( R.id.back ) ).setEnabled( false );

		// create exporter

		_exporter = new VcardExporter( this );

		// start the service's thread

		_exporter.start();

	}

	private void updateProgress()

	{

		ProgressBar bar = (ProgressBar)findViewById( R.id.doit_progress );

		TextView out_of = (TextView)findViewById( R.id.doit_outof );

		if( _max_progress > 0 )

		{

			bar.setMax( _max_progress );

			bar.setSecondaryProgress( _tmp_progress );

			if( _started_progress )

			{

				( (TextView)findViewById( R.id.doit_percentage ) ).setText(

					(int)Math.round( 100 * _progress / _max_progress ) + "%" );

				out_of.setText( _progress + "/" + _max_progress );

				bar.setProgress( _progress );

			}

		}

	}

	private void updateStats()

	{

		( (TextView)findViewById( R.id.doit_writes ) ).setText(

			"" + _count_writes );

		( (TextView)findViewById( R.id.doit_skips ) ).setText(

			"" + _count_skips );

	}

	private void abortExport( boolean show_toaster_popup )

	{

		if( _exporter != null )

		{

			// try and flag worker thread - did we need to?

			if( _exporter.setAbort() )

			{

				// wait for worker thread to end

				while( true ) {

					try {

						_exporter.join();

						break;

					}

					catch( InterruptedException e ) {}

				}

				// notify the user

				if( show_toaster_popup )

					Toast.makeText( this, R.string.doit_exportaborted,

						Toast.LENGTH_LONG ).show();

			}

		}

		// destroy some stuff

		_exporter = null;

		_handler = null;

	}

}