com.commonsware.android.passwordbox.RosterFragment.java Source code

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Here is the source code for com.commonsware.android.passwordbox.RosterFragment.java

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/***
  Copyright (c) 2012 CommonsWare, LLC
  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.
      
  From _The Busy Coder's Guide to Android Development_
http://commonsware.com/Android
 */

package com.commonsware.android.passwordbox;

import android.content.ContentValues;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.Loader;
import android.support.v4.widget.CursorAdapter;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.View;
import android.widget.ListView;
import com.actionbarsherlock.app.SherlockListFragment;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuInflater;
import com.actionbarsherlock.view.MenuItem;
import com.commonsware.cwac.loaderex.acl.SQLiteCursorLoader;

public class RosterFragment extends SherlockListFragment implements LoaderManager.LoaderCallbacks<Cursor> {
    private SQLiteCursorLoader loader = null;
    private DatabaseHelper db = null;

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        setListAdapter(new SimpleCursorAdapter(getActivity(), android.R.layout.simple_list_item_1, null,
                new String[] { DatabaseHelper.TITLE }, new int[] { android.R.id.text1 }, 0));

        db = new DatabaseHelper(getActivity());
        getLoaderManager().initLoader(0, null, this);

        Loader<Cursor> genericCastsSuck = getLoaderManager().getLoader(0);

        loader = (SQLiteCursorLoader) genericCastsSuck;

        setHasOptionsMenu(true);
    }

    @Override
    public void onDestroy() {
        Cursor c = ((CursorAdapter) getListAdapter()).getCursor();

        if (c != null) {
            c.close();
        }

        super.onDestroy();
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.roster, menu);

        super.onCreateOptionsMenu(menu, inflater);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == R.id.add) {
            getActivityContract().showPassphrase();

            return (true);
        }

        return (super.onOptionsItemSelected(item));
    }

    @Override
    public Loader<Cursor> onCreateLoader(int loaderId, Bundle args) {
        loader = db.buildSelectAllLoader(getActivity());

        return (loader);
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
        ((CursorAdapter) getListAdapter()).changeCursor(cursor);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {
        ((CursorAdapter) getListAdapter()).changeCursor(null);
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        Cursor c = ((CursorAdapter) getListAdapter()).getCursor();

        c.moveToPosition(position);

        getActivityContract().showPassphrase(c.getInt(DatabaseHelper.SELECT_ALL_ID),
                c.getString(DatabaseHelper.SELECT_ALL_TITLE), c.getString(DatabaseHelper.SELECT_ALL_PASSPHRASE));
    }

    void savePassphrase(int id, String title, String passphrase) {
        ContentValues values = new ContentValues(2);

        values.put(DatabaseHelper.TITLE, title);
        values.put(DatabaseHelper.PASSPHRASE, passphrase);

        if (id == -1) {
            loader.insert(DatabaseHelper.TABLE, DatabaseHelper.TITLE, values);
        } else {
            String[] args = { String.valueOf(id) };

            loader.update(DatabaseHelper.TABLE, values, DatabaseHelper.ID + "=?", args);
        }
    }

    private MainActivity getActivityContract() {
        return ((MainActivity) getActivity());
    }
}