au.org.ala.fielddata.mobile.ui.SpeciesListFragment.java Source code

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Here is the source code for au.org.ala.fielddata.mobile.ui.SpeciesListFragment.java

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/*******************************************************************************
 * Copyright (C) 2010 Atlas of Living Australia
 * All Rights Reserved.
 *  
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (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.mozilla.org/MPL/
 *  
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 ******************************************************************************/
package au.org.ala.fielddata.mobile.ui;

import android.app.Activity;
import android.content.Context;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.Loader;
import android.support.v4.widget.CursorAdapter;
import android.support.v4.widget.ResourceCursorAdapter;
import android.view.View;
import android.widget.ListView;

import au.org.ala.fielddata.mobile.Reloadable;
import au.org.ala.fielddata.mobile.dao.SpeciesDAO;
import au.org.ala.fielddata.mobile.model.Species;
import au.org.ala.fielddata.mobile.nrmplus.R;

import com.actionbarsherlock.app.SherlockListFragment;
import com.commonsware.cwac.loaderex.acl.AbstractCursorLoader;

public class SpeciesListFragment extends SherlockListFragment implements LoaderCallbacks<Cursor>, Reloadable {

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

    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        Activity activity = getSherlockActivity();
        if (activity instanceof SpeciesSelectionListener) {
            Species species = (Species) l.getAdapter().getItem(position);
            ((SpeciesSelectionListener) activity).onSpeciesSelected(species);
        }
    }

    protected void init() {
        if (getActivity() != null) {

            SpeciesAdapter adapter = new SpeciesAdapter(getActivity(), R.layout.species_list_row, null);
            setListAdapter(adapter);
            LoaderManager manager = getActivity().getSupportLoaderManager();
            manager.initLoader(0, null, this);

        }
    }

    public void reload() {
        if (getActivity() != null) {
            LoaderManager manager = getActivity().getSupportLoaderManager();
            manager.restartLoader(0, null, this);
        }
    }

    @Override
    public void onResume() {
        super.onResume();

    }

    public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
        return new SpeciesLoader(getActivity());
    }

    public void onLoadFinished(Loader<Cursor> arg0, Cursor cursor) {
        ((CursorAdapter) getListAdapter()).swapCursor(cursor);
    }

    public void onLoaderReset(Loader<Cursor> arg0) {
        ((CursorAdapter) getListAdapter()).swapCursor(null);

    }

    static class SpeciesLoader extends AbstractCursorLoader {

        private SpeciesDAO speciesDAO;

        public SpeciesLoader(Context ctx) {
            super(ctx);
            speciesDAO = new SpeciesDAO(ctx);
        }

        @Override
        protected Cursor buildCursor() {
            return speciesDAO.loadSpecies();
        }

    }

    public static class SpeciesAdapter extends ResourceCursorAdapter {

        private Context ctx;

        public SpeciesAdapter(Context context, int layout, Cursor c) {
            super(context, layout, c, 0);
            ctx = context;
        }

        @Override
        public void bindView(View row, Context arg1, Cursor cursor) {
            SpeciesViewHolder viewHolder = (SpeciesViewHolder) row.getTag();
            if (viewHolder == null) {
                viewHolder = new SpeciesViewHolder(row);
                row.setTag(viewHolder);
            }

            String previousGroup = null;
            int position = cursor.getPosition();
            if (position > 0) {
                cursor.moveToPrevious();
                previousGroup = cursor.getString(cursor.getColumnIndex(SpeciesDAO.SPECIES_GROUP_NAME_COLUMN_NAME));
                cursor.moveToPosition(position);
            }

            viewHolder.populate(cursor.getString(cursor.getColumnIndex(SpeciesDAO.SCIENTIFIC_NAME_COLUMN_NAME)),
                    cursor.getString(cursor.getColumnIndex(SpeciesDAO.COMMON_NAME_COLUMN_NAME)),
                    cursor.getString(cursor.getColumnIndex(SpeciesDAO.IMAGE_URL_COLUMN_NAME)),
                    cursor.getString(cursor.getColumnIndex(SpeciesDAO.SPECIES_GROUP_NAME_COLUMN_NAME)),
                    previousGroup);

        }

        public Species getSpecies(int position) {
            Cursor cursor = (Cursor) super.getItem(position);
            return new SpeciesDAO(ctx).load(Species.class, cursor.getInt(0));
        }

    }

}