org.que.activities.fragments.FavoriteMenuFragment.java Source code

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Here is the source code for org.que.activities.fragments.FavoriteMenuFragment.java

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/*
 * Copyright 2014 Quality and Usability Lab, Telekom Innvation Laboratories, TU Berlin..
 *
 * 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.
 */
package org.que.activities.fragments;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.Toast;
import java.io.Serializable;
import org.que.activities.R;
import org.que.db.dao.ConferenceDAO;
import org.que.db.dao.SQLQuery;
import org.que.util.calender.CalendarHelper;

/**
 * Represents the favorite options menu which will be shown in the action bar
 * of the navigation drawer.
 * 
 * @author Christopher Zell <zelldon91@googlemail.com>
 */
public abstract class FavoriteMenuFragment extends Fragment {

    /**
     * The favorite menu item.
     */
    protected MenuItem item;

    /**
     * The flag indicates whether the favorite is set or not.
     */
    protected boolean favorited;

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

    /**
     * Returns the SQLQuery which should be used to update the favorite column
     * of the entity.
     * 
     * @return the SQLQuery
     */
    protected abstract SQLQuery getFavoriteUpdateSQLQuery();

    /**
     * Returns the favorite column name of the entity.
     * 
     * @return the favorite column name
     */
    protected abstract String getFavoriteColumnName();

    /**
     * Returns the current entity which can be favoured.
     * 
     * @return the entity
     */
    protected abstract Serializable getEntity();

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
        inflater.inflate(R.menu.fav_menu, menu);
        item = menu.findItem(R.id.action_favorite);
        if (favorited) {
            item.setIcon(R.drawable.ic_favorite_set);
            item.setChecked(favorited);
        } else {
            item.setIcon(R.drawable.ic_favorite);
            item.setChecked(favorited);
        }
    }

    @Override
    public void onResume() {
        super.onResume();
        getActivity().invalidateOptionsMenu();
    }

    @Override
    public void onPrepareOptionsMenu(Menu menu) {
        super.onPrepareOptionsMenu(menu);
        item = menu.findItem(R.id.action_favorite);
        if (favorited) {
            item.setIcon(R.drawable.ic_favorite_set);
            item.setChecked(favorited);
        } else {
            item.setIcon(R.drawable.ic_favorite);
            item.setChecked(favorited);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem favItem) {
        if (favItem.getItemId() == R.id.action_favorite) {
            SQLQuery query = getFavoriteUpdateSQLQuery();

            Integer fav;
            if (favItem.isChecked()) { //UNfavorited
                setFavIcon(false);
                fav = 0;
                CalendarHelper.deleteItemFromCalendar(getEntity(), getActivity());
                Toast.makeText(getActivity(), getString(R.string.removed), Toast.LENGTH_SHORT).show();
            } else {
                setFavIcon(true);
                fav = 1;
                CalendarHelper.attemptToAddToCalendar(getActivity(), getEntity());
                Toast.makeText(getActivity(), getString(R.string.added), Toast.LENGTH_SHORT).show();
            }

            query.addValues(getFavoriteColumnName(), fav.toString());
            ConferenceDAO.updateEntity(getActivity(), query);
        }

        return super.onOptionsItemSelected(favItem);
    }

    public void setFavIcon(boolean set) {
        favorited = set;
        if (item != null) {
            if (set) {
                item.setIcon(R.drawable.ic_favorite_set);
                item.setChecked(set);
            } else {
                item.setIcon(R.drawable.ic_favorite);
                item.setChecked(set);
            }
        }
    }
}