com.nadmm.airports.ListMenuFragment.java Source code

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Here is the source code for com.nadmm.airports.ListMenuFragment.java

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/*
 * FlightIntel for Pilots
 *
 * Copyright 2011-2013 Nadeem Hasan <nhasan@nadmm.com>
 *
 * 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 3 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 com.nadmm.airports;

import android.content.Context;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.os.Bundle;
import android.provider.BaseColumns;
import android.support.v4.widget.CursorAdapter;
import android.support.v4.widget.ResourceCursorAdapter;
import android.view.View;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public abstract class ListMenuFragment extends ListFragmentBase {

    public static final String MENU_ID = "MENU_ID";
    public static final String SUBTITLE_TEXT = "SUBTITLE_TEXT";

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

        Bundle args = getArguments();
        getSupportActionBar().setSubtitle(args.getString(SUBTITLE_TEXT));
        long id = args.getLong(MENU_ID);
        Cursor c = getMenuCursor(id);
        setCursor(c);
    }

    @Override
    protected CursorAdapter newListAdapter(Context context, Cursor c) {
        return new ListMenuAdapter(context, c);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position) {
        Cursor c = (Cursor) getListAdapter().getItem(position);
        long id = c.getLong(c.getColumnIndex(BaseColumns._ID));
        String title = c.getString(c.getColumnIndex(ListMenuCursor.ITEM_TITLE));
        Class<?> clss = getItemFragmentClass(id);
        if (clss != null) {
            Bundle args = new Bundle();
            args.putString(ActivityBase.FRAGMENT_TAG_EXTRA, String.valueOf(id));
            args.putString(SUBTITLE_TEXT, title);
            args.putLong(MENU_ID, id);
            getActivityBase().replaceFragment(clss, args);
        }
    }

    protected abstract Class<?> getItemFragmentClass(long id);

    protected abstract Cursor getMenuCursor(long id);

    private class ListMenuAdapter extends ResourceCursorAdapter {

        public ListMenuAdapter(Context context, Cursor c) {
            super(context, R.layout.list_menu_item, c, 0);
        }

        @Override
        public void bindView(View view, Context context, Cursor c) {
            int icon = c.getInt(c.getColumnIndex(ListMenuCursor.ITEM_ICON));
            String title = c.getString(c.getColumnIndex(ListMenuCursor.ITEM_TITLE));
            String summary = c.getString(c.getColumnIndex(ListMenuCursor.ITEM_SUMMARY));

            ImageView iv = (ImageView) view.findViewById(R.id.item_icon);
            if (icon != 0) {
                iv.setImageResource(icon);
            } else {
                iv.setVisibility(View.GONE);
            }
            TextView tv = (TextView) view.findViewById(R.id.item_title);
            tv.setText(title);
            tv = (TextView) view.findViewById(R.id.item_summary);
            tv.setText(summary);
        }

    }

    public abstract static class ListMenuCursor extends MatrixCursor {

        public static final String ITEM_ICON = "ITEM_ICON";
        public static final String ITEM_TITLE = "ITEM_TITLE";
        public static final String ITEM_SUMMARY = "ITEM_SUMMARY";

        private final static String[] sColumnNames = new String[] { BaseColumns._ID, ITEM_ICON, ITEM_TITLE,
                ITEM_SUMMARY };

        public ListMenuCursor(long id) {
            super(sColumnNames);
            populateMenuItems(id);
        }

        protected abstract void populateMenuItems(long id);
    }

}