de.knufficast.ui.main.MainActivity.java Source code

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/*******************************************************************************
 * Copyright 2012 Crazywater
 * 
 * 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 de.knufficast.ui.main;

import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;
import de.knufficast.App;
import de.knufficast.R;
import de.knufficast.logic.db.DBEpisode;
import de.knufficast.logic.db.DBFeed;
import de.knufficast.logic.db.Queue;
import de.knufficast.player.QueuePlayer;
import de.knufficast.ui.BaseFragment;
import de.knufficast.ui.episode.EpisodeDetailActivity;
import de.knufficast.ui.feed.FeedDetailActivity;
import de.knufficast.ui.search.SearchFeedActivity;
import de.knufficast.ui.settings.SettingsActivity;

/**
 * The main activity, showing the "Feeds" and "Queue" fragments. Mostly
 * auto-generated by Eclipse.
 * 
 * @author crazywater
 */
public class MainActivity extends FragmentActivity
        implements ActionBar.TabListener, FeedsFragment.Presenter, QueueFragment.Presenter {

    private static final int FEEDS_TAB = 1;

    /**
     * The {@link android.support.v4.view.PagerAdapter} that will provide fragments for each of the
     * sections. We use a {@link android.support.v4.app.FragmentPagerAdapter} derivative, which will
     * keep every loaded fragment in memory. If this becomes too memory intensive, it may be best
     * to switch to a {@link android.support.v4.app.FragmentStatePagerAdapter}.
     */
    private SectionsPagerAdapter sectionsPagerAdapter;

    /**
     * The {@link ViewPager} that will host the section contents.
     */
    private ViewPager viewPager;

    private QueueFragment queueFragment;
    private FeedsFragment feedsFragment;
    private final QueuePlayer queuePlayer = App.get().getPlayer();
    private final Queue queue = App.get().getQueue();

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

        queueFragment = new QueueFragment();
        feedsFragment = new FeedsFragment();

        setContentView(R.layout.activity_main);
        // Create the adapter that will return a fragment for each of the three primary sections
        // of the app.
        sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

        // Set up the action bar.
        final ActionBar actionBar = getActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        actionBar.setHomeButtonEnabled(false);

        // Set up the ViewPager with the sections adapter.
        viewPager = (ViewPager) findViewById(R.id.pager);
        viewPager.setAdapter(sectionsPagerAdapter);

        // When swiping between different sections, select the corresponding tab.
        // We can also use ActionBar.Tab#select() to do this if we have a reference to the
        // Tab.
        viewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
                actionBar.setSelectedNavigationItem(position);
            }
        });

        // For each of the sections in the app, add a tab to the action bar.
        for (int i = 0; i < sectionsPagerAdapter.getCount(); i++) {
            // Create a tab with text corresponding to the page title defined by the adapter.
            // Also specify this Activity object, which implements the TabListener interface, as the
            // listener for when this tab is selected.
            actionBar.addTab(actionBar.newTab().setText(sectionsPagerAdapter.getPageTitle(i)).setTabListener(this));
        }
    }

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

        // auto-move to feeds tab if no feeds added
        if (App.get().getConfiguration().getAllFeeds().size() == 0) {
            viewPager.setCurrentItem(FEEDS_TAB, true);
        }
    }

    @Override
    public void onStop() {
        App.get().save();
        super.onStop();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        queuePlayer.releaseIfNotPlaying();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    @Override
    public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
        // When the given tab is selected, switch to the corresponding page in the ViewPager.
        viewPager.setCurrentItem(tab.getPosition());
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.menu_add_feed:
            addFeedClicked();
            return true;
        case R.id.menu_settings:
            startActivity(new Intent(this, SettingsActivity.class));
            return true;
        case R.id.menu_refresh_feeds:
            // hack to pass an unused argument... one null doesn't work :D
            new ToastRefresherTask(this).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, null, null);
            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }

    /**
     * A {@link FragmentPagerAdapter} that returns a fragment corresponding to one of the primary
     * sections of the app.
     */
    public class SectionsPagerAdapter extends FragmentPagerAdapter {

        BaseFragment[] tabs = { queueFragment, feedsFragment };

        public SectionsPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int i) {
            return tabs[i];
        }

        @Override
        public int getCount() {
            return tabs.length;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return getString(tabs[position].getTitleId()).toUpperCase();
        }
    }

    @Override
    public void feedClicked(DBFeed feed) {
        Intent intent = new Intent(this, FeedDetailActivity.class);
        intent.putExtra(FeedDetailActivity.FEED_ID_INTENT, feed.getId());
        startActivity(intent);
    }

    @Override
    public void episodeClicked(DBEpisode episode) {
        Intent intent = new Intent(this, EpisodeDetailActivity.class);
        intent.putExtra(EpisodeDetailActivity.REQUEST_QUEUE_PAGING_INTENT, true);
        intent.putExtra(EpisodeDetailActivity.EPISODE_ID_INTENT, episode.getId());
        startActivity(intent);
    }

    @Override
    public void playClicked() {
        queuePlayer.togglePlaying();
    }

    @Override
    public void rewindClicked() {
        queuePlayer.rewind();
    }

    @Override
    public void fastForwardClicked() {
        queuePlayer.fastForward();
    }

    @Override
    public void seekTo(int progress) {
        queuePlayer.seekTo(progress);
    }

    @Override
    public void moveEpisode(DBEpisode episode, int to) {
        queue.move(episode, to);
    }

    @Override
    public void removeEpisode(DBEpisode episode) {
        queue.remove(episode);
    }

    @Override
    public void onTabReselected(Tab tab, FragmentTransaction ft) {
    }

    @Override
    public void onTabUnselected(Tab tab, FragmentTransaction ft) {
    }

    @Override
    public void addFeedClicked() {
        startActivity(new Intent(this, SearchFeedActivity.class));
    }
}