AccountActivity.java

//   Copyright 2011 UPM-GSI: Group of Intelligent Systems -
//   - Universidad Politécnica de Madrid (UPM)
//
//   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 es.upm.dit.gsi.noticiastvi.gtv.account;

import java.util.ArrayList;

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Context;
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.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
import es.upm.dit.gsi.noticiastvi.gtv.R;

/**
 * Shows the accounts on the device.
 * It has account creation/deletion capabilities.
 * 
 * @author Antonio Prada <toniprada@gmail.com>
 * 
 */
public class AccountActivity extends ListActivity implements OnClickListener {

	private Context mContext;
	private ListAdapter adapter;
	private DBHelper helper;

	public void onCreate(Bundle icicle) {
		super.onCreate(icicle);
		setContentView(R.layout.account);
		mContext = this;
		setTitle(R.string.choose_user);
		helper = new DBHelper(mContext);

		Button add = (Button) findViewById(R.id.button1);
		add.setOnClickListener(this);

		ArrayList<Account> accounts = helper.getUsers();
		adapter = new ListAdapter(mContext, accounts);
		setListAdapter(adapter);

		ListView list = getListView();
		list.setOnItemLongClickListener(new OnItemLongClickListener() {

			@Override
			public boolean onItemLongClick(AdapterView<?> parent, View view,
					int position, long id) {
				Account account = adapter.getItem(position);
				deleteAccount(account);
				return true;
			}
		});
	}

	private void deleteAccount(final Account account) {
		AlertDialog.Builder builder = new AlertDialog.Builder(this);
		builder.setMessage(
				getText(R.string.are_you_sure_delete) + account.getNombre()
						+ getText(R.string.are_you_sure_delete_finish))
				.setCancelable(false)
				.setPositiveButton(getText(R.string.yes),
						new DialogInterface.OnClickListener() {
							public void onClick(DialogInterface dialog, int id) {
								dialog.dismiss();
								final ProgressDialog pd = ProgressDialog.show(
										mContext,
										mContext.getText(R.string.please_wait),
										mContext.getText(R.string.deleting_user),
										true, false);
								Handler handler = new Handler() {
									@Override
									public void handleMessage(Message msg) {
										// First of all, dismiss the dialog
										pd.dismiss();
										// Now we'll see see what happened in
										// the thread
										switch (msg.what) {
										case DeleteThread.RESULT_OK:
											helper.deleteUser(account.getId());
											adapter.remove(account);
											adapter.notifyDataSetChanged();
											break;
										case DeleteThread.RESULT_ERROR:
											Toast.makeText(mContext,
													R.string.error_create_user,
													Toast.LENGTH_SHORT);
											break;
										}
									}
								};
								DeleteThread thread = new DeleteThread(handler,
										account.getId());
								thread.start();

							}
						})
				.setNegativeButton(getText(R.string.no),
						new DialogInterface.OnClickListener() {
							public void onClick(DialogInterface dialog, int id) {
								dialog.cancel();
							}
						});
		AlertDialog alert = builder.create();
		alert.show();
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.button1:
			showAddDialog();
		}
	}

	@Override
	protected void onListItemClick(ListView l, View v, int position, long id) {
		super.onListItemClick(l, v, position, id);
		// Get the item that was clicked
		Account account = adapter.getItem(position);
		Intent data = new Intent();
		Bundle bundle = account.getAsBundle();
		data.putExtra(Account.ACCOUNT, bundle);
		setResult(RESULT_OK, data);

		finish();
	}

	private void showAddDialog() {
		final Dialog dialog = new Dialog(mContext);

		dialog.setContentView(R.layout.account_add_dialog);
		dialog.setTitle(getText(R.string.new_user));

		Button b = (Button) dialog.findViewById(R.id.buttonAddOk);
		b.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				final EditText et = (EditText) dialog
						.findViewById(R.id.editTextAdd);
				dialog.dismiss();
				final ProgressDialog pd = ProgressDialog.show(mContext,
						mContext.getText(R.string.please_wait),
						mContext.getText(R.string.creating_user), true, false);
				Handler handler = new Handler() {
					@Override
					public void handleMessage(Message msg) {
						// First of all, dismiss the dialog
						pd.dismiss();
						// Now we'll see see what happened in the thread
						switch (msg.what) {
						case CreateThread.RESULT_OK:
							Account account = (Account) msg.obj;
							createUser(account);
							break;
						case CreateThread.RESULT_ERROR:
							Toast.makeText(mContext,
									R.string.error_create_user,
									Toast.LENGTH_SHORT);
							break;
						}
					}
				};
				CreateThread thread = new CreateThread(handler, et.getText()
						.toString());
				thread.start();
			}
		});
		dialog.show();
	}

	private void createUser(Account a) {
		Account account = helper.createUser(a.getNombre(), a.getId());
		if (account != null) {
			adapter.add(account);
			adapter.notifyDataSetChanged();
		} else {
			Toast.makeText(mContext, R.string.error_create_user,
					Toast.LENGTH_SHORT);
		}

	}

	@Override
	public void onDestroy() {
		if (helper != null) {
			helper.close();
		}
		setResult(RESULT_CANCELED);
		super.onDestroy();
	}

}