it.gulch.linuxday.android.activities.TrackScheduleActivity.java Source code

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Here is the source code for it.gulch.linuxday.android.activities.TrackScheduleActivity.java

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/*
 * Copyright 2014 Christophe Beyls
 *
 * 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 it.gulch.linuxday.android.activities;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.NavUtils;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.view.MenuItem;

import it.gulch.linuxday.android.R;
import it.gulch.linuxday.android.fragments.EventDetailsFragment;
import it.gulch.linuxday.android.fragments.RoomImageDialogFragment;
import it.gulch.linuxday.android.fragments.TrackScheduleListFragment;
import it.gulch.linuxday.android.model.db.Day;
import it.gulch.linuxday.android.model.db.Event;
import it.gulch.linuxday.android.model.db.Track;
import it.gulch.linuxday.android.utils.NfcUtils;

/**
 * Track Schedule container, works in both single pane and dual pane modes.
 *
 * @author Christophe Beyls
 */
public class TrackScheduleActivity extends ActionBarActivity
        implements TrackScheduleListFragment.Callbacks, NfcUtils.CreateNfcAppDataCallback {
    public static final String EXTRA_DAY = "day";

    public static final String EXTRA_TRACK = "track";

    // Optional extra used as a hint for up navigation from an event
    public static final String EXTRA_FROM_EVENT_ID = "from_event_id";

    private Day day;

    private Track track;

    private boolean isTabletLandscape;

    private Event lastSelectedEvent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.track_schedule);

        Bundle extras = getIntent().getExtras();
        day = (Day) extras.getSerializable(EXTRA_DAY);
        track = (Track) extras.getSerializable(EXTRA_TRACK);

        ActionBar bar = getSupportActionBar();
        bar.setDisplayHomeAsUpEnabled(true);
        bar.setTitle(track.toString());
        bar.setSubtitle(day.toString());

        isTabletLandscape = getResources().getBoolean(R.bool.tablet_landscape);

        TrackScheduleListFragment trackScheduleListFragment;
        FragmentManager fm = getSupportFragmentManager();
        if (savedInstanceState == null) {
            long fromEventId = extras.getLong(EXTRA_FROM_EVENT_ID, -1L);
            if (fromEventId != -1L) {
                trackScheduleListFragment = TrackScheduleListFragment.newInstance(day, track, fromEventId);
            } else {
                trackScheduleListFragment = TrackScheduleListFragment.newInstance(day, track);
            }

            fm.beginTransaction().add(R.id.schedule, trackScheduleListFragment).commit();
        } else {
            trackScheduleListFragment = (TrackScheduleListFragment) fm.findFragmentById(R.id.schedule);

            // Remove the room image DialogFragment when switching from dual pane to single pane mode
            if (!isTabletLandscape) {
                Fragment roomImageDialogFragment = fm.findFragmentByTag(RoomImageDialogFragment.TAG);
                if (roomImageDialogFragment != null) {
                    fm.beginTransaction().remove(roomImageDialogFragment).commit();
                }
            }
        }
        trackScheduleListFragment.setSelectionEnabled(isTabletLandscape);

        if (isTabletLandscape) {
            // Enable Android Beam
            NfcUtils.setAppDataPushMessageCallbackIfAvailable(this, this);
        }
    }

    @Override
    public byte[] createNfcAppData() {
        if (lastSelectedEvent == null) {
            return null;
        }

        return String.valueOf(lastSelectedEvent.getId()).getBytes();
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            return true;
        }
        return false;
    }

    @Override
    public void onEventSelected(int position, Event event) {
        if (isTabletLandscape) {
            lastSelectedEvent = event;

            // Tablet mode: Show event details in the right pane fragment
            FragmentManager fm = getSupportFragmentManager();
            EventDetailsFragment currentFragment = (EventDetailsFragment) fm.findFragmentById(R.id.event);
            if (event != null) {
                // Only replace the fragment if the event is different
                if ((currentFragment == null) || !currentFragment.getEvent().equals(event)) {
                    Fragment f = EventDetailsFragment.newInstance(event);
                    // Allow state loss since the event fragment will be synchronized with the list selection after activity re-creation
                    fm.beginTransaction().setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
                            .replace(R.id.event, f).commitAllowingStateLoss();
                }
            } else {
                // Nothing is selected because the list is empty
                if (currentFragment != null) {
                    fm.beginTransaction().remove(currentFragment).commitAllowingStateLoss();
                }
            }
        } else {
            // Classic mode: Show event details in a new activity
            Intent intent = new Intent(this, TrackScheduleEventActivity.class);
            intent.putExtra(TrackScheduleEventActivity.EXTRA_DAY, day);
            intent.putExtra(TrackScheduleEventActivity.EXTRA_TRACK, track);
            intent.putExtra(TrackScheduleEventActivity.EXTRA_POSITION, position);
            startActivity(intent);
        }
    }
}