ChatActivity.java :  » App » android-chatty » ru » chatty » app » Android Open Source

/* ChatActivity.java
 *
 * Copyright 2011 Aleksey Konovalov
 * All Rights Reserved.
 *
 * 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 2 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 ru.chatty.app;

import ru.chatty.db.ChattyDatabase.Contacts;
import ru.chatty.db.ChattyDatabase.History;
import ru.chatty.engine.Message;
import ru.chatty.im.Account;
import ru.chatty.im.Contact;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.os.Handler;
import android.text.Spannable;
import android.text.format.Time;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;

public class ChatActivity extends Activity {

  private static final String LOG_TAG = "Chatty:ChatActivity";
  public static final String CONTACT_ID_EXTRA = "ContactID";
  public static final String ACCOUNT_ID_EXTRA = "AccountID";

  /**   GUI */
  private static final int ADD_HISTORY_ITEM = 0;

  private EditText message;
  private ArrayAdapter<Spannable> historyListAdapter;
  private String contactId; //   
  private long contactDBId; //   
  private Account account;
  private Contact contact;

  private final Handler mHandler = new Handler() {

    @Override
    public void handleMessage(android.os.Message msg) {
      switch (msg.what) {
      case ADD_HISTORY_ITEM:
        historyListAdapter.insert(
            ChatMessageFormatter.getFormattedText(
                ChatActivity.this, (Message) msg.obj), 0);
        break;
      }
    }

  };

  private final Contact.Listener contactListener = new Contact.Listener() {

    @Override
    public void onIncomingMessage(String message) {
      contact.setMessagesIsReaded();
      mHandler.sendMessage(mHandler.obtainMessage(ADD_HISTORY_ITEM,
          new Message(message, null, true)));
    }
  };

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.chat);

    Intent intent = getIntent();
    contactId = intent.getStringExtra(CONTACT_ID_EXTRA);
    String accountId = intent.getStringExtra(ACCOUNT_ID_EXTRA);
    /*
     * contactCursor = managedQuery(Contacts.CONTENT_URI, null, Contacts._ID
     * + " = " + contactDBId, null, null); if (!contactCursor.moveToFirst())
     * { Log.e(LOG_TAG, "Can't find contact"); finish(); return; }
     */
    // contactId = contactCursor.getString(contactCursor
    // .getColumnIndex(Contacts.CONTACT_ID));

    account = ChattyApplication.getApplication(this).getAccountsManager()
        .getAccount(accountId);

    if (account == null) {
      Log.e(LOG_TAG, "Can't find account");
      finish();
      return;
    }

    contact = account.getContact(contactId);
    if (contact == null) {
      Log.e(LOG_TAG, "contact not found");
      finish();
      return;
    }

    Cursor c = managedQuery(Contacts.CONTENT_URI,
        new String[] { Contacts._ID }, Contacts.CONTACT_ID + " = ?",
        new String[] { contactId }, null);
    if (!c.moveToFirst()) {
      Log.e(LOG_TAG, "Contact not found in DB [contactId = " + contactId + "]");
      finish();
      return;
    }
    contactDBId = c.getLong(0);

    contact.registerListener(contactListener);
    contact.setMessagesIsReaded();
    setTitle(contact.getNick());

    initHistory();

    message = (EditText) findViewById(R.id.InputMessage);

    Button sendButton = (Button) findViewById(R.id.SendButton);
    sendButton.setOnClickListener(new View.OnClickListener() {

      @Override
      public void onClick(View view) {
        if (account.isConnected()) {
          String msg = message.getText().toString().trim();
          if (msg.length() > 0) {
            sendMessage(msg);
            message.setText("");
          }
        }
      }
    });
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
    if (contact != null)
      contact.unregisterListener(contactListener);
  }

  private void initHistory() {
    historyListAdapter = new ArrayAdapter<Spannable>(this,
        R.layout.chat_history_item);

    Cursor c = managedQuery(
        History.CONTENT_URI,
        null,
        History.CONTACT
            + " = "
            + contactDBId, null,
        History.DATE + " DESC");

    if (c.moveToFirst()) {
      do {
        String text = c.getString(c.getColumnIndex(History.MESSAGE));
        short flags = c.getShort(c.getColumnIndex(History.FLAGS));
        long millis = c.getLong(c.getColumnIndex(History.DATE));

        Time time = new Time();
        time.set(millis);

        Message msg = new Message(text, time,
            (flags & History.FLAG_RECEIVED_MESSAGE) != 0);
        historyListAdapter.add(ChatMessageFormatter.getFormattedText(
            ChatActivity.this, msg));
      } while (c.moveToNext());
    }

    ListView history = (ListView) findViewById(R.id.History);
    history.setAdapter(historyListAdapter);
  }

  void sendMessage(String message) {
    contact.sendMessage(message);
    ContentValues values = new ContentValues();
    values.put(History.MESSAGE, message);
    values.put(History.CONTACT, contactDBId);
    getContentResolver().insert(History.CONTENT_URI, values);
    Message msg = new Message(message, null, false);
    mHandler.sendMessage(mHandler.obtainMessage(ADD_HISTORY_ITEM, msg));
  }
}