RoomConfigActivity.java

package org.openhab.habclient;

import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v13.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;

import org.openhab.domain.IApplicationModeProvider;
import org.openhab.domain.IRoomProvider;
import org.openhab.domain.model.ApplicationMode;
import org.openhab.domain.model.Room;
import org.openhab.habclient.dagger.DaggerRoomConfigActivityComponent;
import org.openhab.habdroid.R;

import java.util.Locale;

import javax.inject.Inject;

public class RoomConfigActivity extends Activity implements ActionBar.TabListener {

    /**
     * The {@link android.support.v4.view.PagerAdapter} that will provide
     * fragments for each of the sections. We use a
     * {@link 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.v13.app.FragmentStatePagerAdapter}.
     */
    SectionsPagerAdapter mSectionsPagerAdapter;

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

    private Room mConfigRoom;

    @Inject IRoomProvider mRoomProvider;
    @Inject IRoomDataContainer mRoomDataContainer;
    @Inject IApplicationModeProvider mApplicationModeProvider;

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

        setContentView(R.layout.activity_room_config);

        DaggerRoomConfigActivityComponent.builder()
                .appComponent(((HABApplication) getApplication()).appComponent())
                .build()
                .inject(this);

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

        // Create the adapter that will return a fragment for each of the three
        // primary sections of the activity.
        mSectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager(), this);

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

        // 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.
        mViewPager.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 < mSectionsPagerAdapter.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 callback (listener) for when
            // this tab is selected.
            actionBar.addTab(
                    actionBar.newTab()
                            .setText(mSectionsPagerAdapter.getPageTitle(i))
                            .setTabListener(this));
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.room_config, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
        // When the given tab is selected, switch to the corresponding page in
        // the ViewPager.
        mViewPager.setCurrentItem(tab.getPosition());
        final HABApplication application = (HABApplication) getApplication();
        if(tab.getPosition() == 0)
            mApplicationModeProvider.setAppMode(ApplicationMode.RoomEdit);
        else {
            mApplicationModeProvider.setAppMode(ApplicationMode.UnitPlacement);
        }
    }

    @Override
    public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
    }

    @Override
    public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
    }

    public boolean isNewRoom() {
        return mRoomDataContainer.getConfigRoom() == null;
    }

    public Room getConfigRoom() {
        if(mConfigRoom != null)
            return mConfigRoom;

        Room roomToBeEdited = mRoomDataContainer.getConfigRoom();

        if(roomToBeEdited == null)
            mConfigRoom = mRoomProvider.createNewRoom();
        else
            mConfigRoom = roomToBeEdited;

        return mConfigRoom;
    }

    public void setConfigRoom(Room configRoom) {
        mConfigRoom = configRoom;
    }

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

        private RoomConfigFragment mRoomConfigFragment;
        private UnitPlacementFragment mUnitPlacementFragment;

        public SectionsPagerAdapter(FragmentManager fm, RoomConfigActivity activity) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            switch (position) {
                case 0:
                    if(mRoomConfigFragment == null)
                        mRoomConfigFragment = RoomConfigFragment.newInstance();
                    return mRoomConfigFragment;
                case 1:
                    if(mUnitPlacementFragment == null)
                        mUnitPlacementFragment = UnitPlacementFragment.newInstance(0);
                    return mUnitPlacementFragment;
            }

            return null;
        }

        @Override
        public int getCount() {
            // Show 2 total pages.
            return 2;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            Locale l = Locale.getDefault();
            switch (position) {
                case 0:
                    return getString(R.string.title_room_config).toUpperCase(l);
                case 1:
                    return getString(R.string.title_unit_placement).toUpperCase(l);
            }
            return null;
        }
    }
}