MailboxActivity.java

package eoc.studio.voicecard.mailbox;

import java.util.ArrayList;
import java.util.List;

import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import eoc.studio.voicecard.BaseActivity;
import eoc.studio.voicecard.R;
import eoc.studio.voicecard.card.viewer.CardViewerActivity;
import eoc.studio.voicecard.manager.HttpManager;
import eoc.studio.voicecard.menu.ClearAllMail;
import eoc.studio.voicecard.menu.DeleteSelectedMail;
import eoc.studio.voicecard.utils.ListUtility;

public class MailboxActivity extends BaseActivity
{
	private static final String TAG = "MailboxActivity";
	// Data
	private List<Mail> mails;
	private MailsAdapterData mailsAdapterData;
	private MailsAdapterView mailAdapterView;
	private HttpManager httpManager = new HttpManager();
	private int firstVisiblePosition = 0;
	private int currentListSize = 0;
	private int lastVisiblePosition = 0;
	private boolean isSelectedAll = false;
	// Views
	private TextView mailInfo, errorMsg;
	private Button selectAll;
	private ListView showMails;
	private ProgressDialog progressDialog;
	private Context context;

	@Override
	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_mailbox);
		context = getApplicationContext();
		findViews();
	}

	@Override
	public void onResume()
	{
		super.onResume();
		isSelectedAll = false;
		mailsAdapterData = new MailsAdapterData(MailboxActivity.this);
		mailsAdapterData.open();
		showMailInfo(0);
		LoadDbThread loadDbThread = new LoadDbThread();
		loadDbThread.start();
	}

	@Override
	public void onPause()
	{
		super.onPause();
		updateUnReadCount();
		if (mailAdapterView != null)
		{
			mailAdapterView.setPause(true);
			if (mails != null)
			{
				mails.clear();
			}
			mailAdapterView.clearData();
		}
		if (mailsAdapterData != null)
		{
			mailsAdapterData.close();
		}
	}

	private void updateUnReadCount()
	{
		String PREFS_FILENAME = "MAIN_MENU_SETTING";
		SharedPreferences configPreferences = getSharedPreferences(PREFS_FILENAME, 0);
		Log.d(TAG, "updateUnReadCount() mailsAdapterData.getLocalUnReadMailCount(): "
				+ mailsAdapterData.getLocalUnReadMailCount(httpManager.getFacebookID()));
		configPreferences
				.edit()
				.putInt("mailboxUnReadCount",
						mailsAdapterData.getLocalUnReadMailCount(httpManager.getFacebookID()))
				.commit();
	}

	@Override
	protected void onDestroy()
	{
		super.onDestroy();
		Log.d(TAG, "onDestroy()");
		progressDialog.dismiss();
	}

	private void findViews()
	{
		mailInfo = (TextView) findViewById(R.id.act_mailbox_tv_title_bar);
		showMails = (ListView) findViewById(R.id.act_mailbox_lv);
		errorMsg = (TextView) findViewById(R.id.act_mailbox_tv_errorMsg);
		selectAll = (Button) findViewById(R.id.act_mailbox_bt_title_bar);
		selectAll.setOnClickListener(new View.OnClickListener()
		{
			@Override
			public void onClick(View v)
			{
				if (mailAdapterView != null)
				{
					if (!isSelectedAll)
					{
						selectAll.setText(getResources().getString(R.string.deselect_all));
						mailAdapterView.selectAll();
						isSelectedAll = true;
					}
					else
					{
						selectAll.setText(getResources().getString(R.string.select_all));
						mailAdapterView.deselectAll();
						isSelectedAll = false;
					}
				}
			}
		});
		DeleteSelectedMail deleteSelectedMail = (DeleteSelectedMail) findViewById(R.id.act_mailbox_iv_menu_deleteSelectedMail);
		deleteSelectedMail.setOnClickListener(new View.OnClickListener()
		{
			@Override
			public void onClick(View v)
			{
				mailAdapterView.setInterrupt(true);
				deleteSelectedMails();
			}
		});
		ClearAllMail clearAllMail = (ClearAllMail) findViewById(R.id.act_mailbox_iv_menu_clearAllMail);
		clearAllMail.setOnClickListener(new View.OnClickListener()
		{
			@Override
			public void onClick(View v)
			{
				mailAdapterView.setInterrupt(true);
				clearAllMails();
			}
		});
		showMails.setOnScrollListener(listScrollListener);
		showMails.setOnItemClickListener(itemClickListener);
	}

	private boolean loadDb()
	{
		mails = new ArrayList<Mail>();
		String rowId, cardId, ownerId, sendId, sendFrom, sendFromName, senderImgLink, sendTo, subject, body, fontSize, fontColor, imgLink, speech, sign, sendTime;
		int checkState = 0, newState;
		byte[] img;
		Cursor cursor = mailsAdapterData.getDatafromOwnerId(httpManager.getFacebookID());
		if (cursor != null)
		{
			int count = cursor.getCount();
			Log.d(TAG, "cursor size is " + count);
			if (count > 0)
			{
				while (cursor.moveToNext())
				{
					rowId = cursor.getString(cursor.getColumnIndex(MailsAdapterData.KEY_ROW_ID));
					cardId = cursor.getString(cursor.getColumnIndex(MailsAdapterData.KEY_CARD_ID));
					ownerId = cursor
							.getString(cursor.getColumnIndex(MailsAdapterData.KEY_OWNER_ID));
					sendId = cursor.getString(cursor.getColumnIndex(MailsAdapterData.KEY_SEND_ID));
					sendFrom = cursor.getString(cursor
							.getColumnIndex(MailsAdapterData.KEY_SEND_FROM));
					sendFromName = cursor.getString(cursor
							.getColumnIndex(MailsAdapterData.KEY_SEND_FROM_NAME));
					senderImgLink = cursor.getString(cursor
							.getColumnIndex(MailsAdapterData.KEY_SEND_FROM_LINK));
					sendTo = cursor.getString(cursor.getColumnIndex(MailsAdapterData.KEY_SEND_TO));
					subject = cursor.getString(cursor.getColumnIndex(MailsAdapterData.KEY_SUBJECT));
					body = cursor.getString(cursor.getColumnIndex(MailsAdapterData.KEY_BODY));
					fontSize = cursor.getString(cursor
							.getColumnIndex(MailsAdapterData.KEY_FONT_SIZE));
					fontColor = cursor.getString(cursor
							.getColumnIndex(MailsAdapterData.KEY_FONT_COLOR));
					imgLink = cursor
							.getString(cursor.getColumnIndex(MailsAdapterData.KEY_IMG_LINK));
					img = cursor.getBlob(cursor.getColumnIndex(MailsAdapterData.KEY_IMG));
					speech = cursor.getString(cursor.getColumnIndex(MailsAdapterData.KEY_SPEECH));
					sign = cursor.getString(cursor.getColumnIndex(MailsAdapterData.KEY_SIGN));
					sendTime = cursor.getString(cursor
							.getColumnIndex(MailsAdapterData.KEY_SEND_TIME));
					newState = cursor.getInt(cursor.getColumnIndex(MailsAdapterData.KEY_NEW_STATE));
					mails.add(new Mail(rowId, cardId, ownerId, sendId, sendFrom, sendFromName,
							senderImgLink, sendTo, subject, body, fontSize, fontColor, imgLink,
							img, speech, sign, sendTime, checkState, newState));
				}
				return true;
			}
			else
			{
				return false;
			}
		}
		else
		{
			return false;
		}
	}

	private void updateView(boolean isEmpty)
	{
		if (mailAdapterView != null) mailAdapterView.setInterrupt(false);
		if (isEmpty)
		{
			errorMsg.setVisibility(View.VISIBLE);
			showMails.setVisibility(View.INVISIBLE);
		}
		else
		{
			errorMsg.setVisibility(View.INVISIBLE);
			showMails.setVisibility(View.VISIBLE);
			mailAdapterView = new MailsAdapterView(MailboxActivity.this, mails, mailsAdapterData,
					showMails);
			showMails.setAdapter(mailAdapterView);
		}
		dialogHandler.sendEmptyMessage(ListUtility.DISMISS_WAITING_DIALOG);
	}

	private void deleteSelectedMails()
	{
		if (mailAdapterView != null)
		{
			if (mailsAdapterData != null)
			{
				boolean success = mailsAdapterData
						.deleteSelected(mailAdapterView.getSelectedItem());
				if (success)
				{
					clearData();
				}
			}
		}
	}

	private void clearAllMails()
	{
		if (mailsAdapterData != null)
		{
			boolean success = mailsAdapterData.delete();
			if (success)
			{
				clearData();
			}
		}
	}

	private void clearData()
	{
		mails.clear();
		mailAdapterView.clearData();
		showMailInfo(0);
		LoadDbThread loadDbThread = new LoadDbThread();
		loadDbThread.start();
	}

	public void showMailInfo(int count)
	{
		mailInfo.setText(getResources().getString(R.string.select_mails, count));
	}

	public void setButtonString(boolean isSelectedAll, int resId)
	{
		selectAll.setText(getResources().getString(resId));
		this.isSelectedAll = isSelectedAll;
	}

	private void getMailsImgfromDB()
	{
		if (mailsAdapterData != null)
		{
			Log.d(TAG, "firstVisiblePosition is " + firstVisiblePosition);
			Log.d(TAG, "lastVisiblePosition is " + lastVisiblePosition);
			mailAdapterView.loadImagefromPosition(firstVisiblePosition, lastVisiblePosition);
		}
	}

	private Handler uiHandler = new Handler()
	{
		@Override
		public void handleMessage(Message msg)
		{
			switch (msg.what)
			{
			case ListUtility.LOAD_DB_COMPLETE:
				updateView(false);
				break;
			case ListUtility.LOAD_DB_EMPTY:
				updateView(true);
				break;
			}
		}
	};
	private Handler dialogHandler = new Handler()
	{
		@Override
		public void handleMessage(Message msg)
		{
			switch (msg.what)
			{
			case ListUtility.SHOW_WAITING_DIALOG:
				Log.d(TAG, "show waiting dialog ");
				progressDialog = ProgressDialog.show(MailboxActivity.this, "", getResources()
						.getString(R.string.file_process_loading));
				break;
			case ListUtility.DISMISS_WAITING_DIALOG:
				Log.d(TAG, "dismiss dialog ");
				if (progressDialog != null) progressDialog.dismiss();
				break;
			}
		}
	};
	private Handler downloadHandler = new Handler()
	{
		public void handleMessage(Message msg)
		{
			switch (msg.what)
			{
			case ListUtility.GET_THUMBNAIL:
				Log.d(TAG, "GET_THUMBNAIL ");
				mailAdapterView.setInterrupt(false);
				getMailsImgfromDB();
				break;
			}
		}
	};
	private AbsListView.OnScrollListener listScrollListener = new AbsListView.OnScrollListener()
	{
		@Override
		public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
				int totalItemCount)
		{
			firstVisiblePosition = firstVisibleItem;
			lastVisiblePosition = firstVisiblePosition + visibleItemCount;
		}

		@Override
		public void onScrollStateChanged(AbsListView view, int scrollState)
		{
			Log.d(TAG, "scrollState " + scrollState);
			if (currentListSize != 0)
			{
				if (scrollState == OnScrollListener.SCROLL_STATE_IDLE && mailAdapterView != null)
				{
					downloadHandler.sendEmptyMessageDelayed(ListUtility.GET_THUMBNAIL, 1500);
				}
				if (scrollState == OnScrollListener.SCROLL_STATE_TOUCH_SCROLL
						&& mailAdapterView != null)
				{
					downloadHandler.removeMessages(ListUtility.GET_THUMBNAIL);
				}
				mailAdapterView.setInterrupt(true);
			}
			else
			{
				Log.d(TAG, "currentListSize is zero ");
			}
		}
	};
	private OnItemClickListener itemClickListener = new OnItemClickListener()
	{
		@Override
		public void onItemClick(AdapterView<?> parent, View view, int position, long id)
		{
			Log.d(TAG, "This position is " + position);
			mailAdapterView.setInterrupt(true);
			downloadHandler.removeMessages(ListUtility.GET_THUMBNAIL);
			if (position < mails.size())
			{
				Log.d(TAG, "mail is " + mails.get(position).toString());
				mailsAdapterData.updateNewState(mails.get(position).getRowId(),
						MailsAdapterData.NOTNEW);
				Intent mailIntent = new Intent(MailboxActivity.this, CardViewerActivity.class);
				mailIntent.putExtra(CardViewerActivity.EXTRA_KEY_MODE,
						CardViewerActivity.MODE_VIEWER);
				mailIntent.putExtra(CardViewerActivity.EXTRA_KEY_MAIL, mails.get(position));
				startActivity(mailIntent);
			}
		}
	};

	private class LoadDbThread extends Thread
	{
		@Override
		public void run()
		{
			dialogHandler.sendEmptyMessage(ListUtility.SHOW_WAITING_DIALOG);
			boolean isSucess = loadDb();
			if (isSucess)
				uiHandler.sendEmptyMessage(ListUtility.LOAD_DB_COMPLETE);
			else uiHandler.sendEmptyMessage(ListUtility.LOAD_DB_EMPTY);
		}
	}
}