DashboardActivity.java

package com.arconus.dicecommander.ui.activity;

import android.app.ActionBar;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.arconus.dicecommander.Application;
import com.arconus.dicecommander.R;
import com.arconus.dicecommander.adapters.ViewPagerAdapter;
import com.arconus.dicecommander.events.CharacterSelectedEvent;
import com.arconus.dicecommander.events.NewCharacterEvent;
import com.arconus.dicecommander.interactors.managers.GameCharacterManager;
import com.arconus.dicecommander.model.entities.character.GameCharacter;
import com.squareup.otto.Subscribe;

public class DashboardActivity extends FragmentActivity implements AdapterView.OnItemClickListener {

    private DrawerLayout drawerLayout;
    private ListView drawerList;
    private ActionBarDrawerToggle drawerToggle;
    private ViewPager viewPager;
    private String title = "DiceCommander";

    @Override
    protected void onCreate(Bundle inState) {
        super.onCreate(inState);
        setContentView(R.layout.dashboard);
        Application.bus.register(this);
        Application.store.loadFromFile();
        initializeMenuDrawer();
        viewPager = ((ViewPager) findViewById(R.id.pager));
        configureViewPager();

        if (GameCharacterManager.isEmpty()) {
            showNewCharacterDialog();
        } else {
            setSelectedCharFromPreferences();
        }

    }

    private void initializeMenuDrawer() {
        drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawerList = (ListView) findViewById(R.id.left_drawer);

        drawerList.setOnItemClickListener(this);

        drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.drawable.ic_drawer, R.string.drawer_open, R.string.drawer_close) {
            /** Called when a drawer has settled in a completely closed state. */
            public void onDrawerClosed(View view) {
                getActionBar().setTitle(title);
                invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            }

            /** Called when a drawer has settled in a completely open state. */
            public void onDrawerOpened(View drawerView) {
                invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            }
        };

        drawerLayout.setDrawerListener(drawerToggle);
        getActionBar().setDisplayHomeAsUpEnabled(true);
        getActionBar().setHomeButtonEnabled(true);
    }

    private void configureViewPager() {
        ViewPagerAdapter pagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());
        viewPager.setAdapter(pagerAdapter);
    }

    private ArrayAdapter<GameCharacter> getDrawerAdapter() {
        return new ArrayAdapter<GameCharacter>(this,
                R.layout.nav_drawer_item_layout,
                android.R.id.text1,
                GameCharacterManager.getInstance().getGameCharacters());
    }

    private void setSelectedCharFromPreferences() {
        GameCharacterManager instance = GameCharacterManager.getInstance();
        instance.setSelectedCharacterFromPreferences();
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Pass the event to ActionBarDrawerToggle, if it returns
        // true, then it has handled the app icon touch event
        if (drawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        switch (item.getItemId()) {
            case R.id.menu_new_character:
                showNewCharacterDialog();
                return true;
            case R.id.menu_new_power:
                if (GameCharacterManager.getInstance().isCharacterSelected()) {
                    Intent intent = new Intent(this, PowerWizardActivity.class);
                    startActivity(intent);
                } else {
                    Toast.makeText(this, getString(R.string.toast_no_selected_character), Toast.LENGTH_SHORT).show();
                }
                return true;

            default:
                return super.onOptionsItemSelected(item);
        }
    }

    private void showNewCharacterDialog() {
        Intent intent = new Intent(this, CharacterWizardActivity.class);
        startActivity(intent);
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        GameCharacterManager.getInstance().setSelectedCharacter(position);
        drawerList.setItemChecked(position, true);
        drawerLayout.closeDrawer(drawerList);
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        drawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        drawerToggle.onConfigurationChanged(newConfig);
    }

    @Subscribe
    public void answerCharSelectedEvent(CharacterSelectedEvent event) {
        setTitleFromSelectedCharacter();
    }

    private void setTitleFromSelectedCharacter() {
        GameCharacter selectedCharacter = GameCharacterManager.getSelectedCharacter();
        if (selectedCharacter != null) {
            title = selectedCharacter.getName();
            ActionBar actionBar = getActionBar();
            if (actionBar != null) {
                actionBar.setTitle(title);
            }
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        Application.bus.unregister(this);
        Application.store.saveToFile();
    }

    @Override
    protected void onResume() {
        super.onResume();
        Application.bus.register(this);
        drawerList.setAdapter(getDrawerAdapter());
        setTitleFromSelectedCharacter();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.character_list_menu, menu);
        return true;
    }

    @Subscribe
    public void answerNewCharacterCreatedEvent(NewCharacterEvent event) {
        drawerList.setAdapter(getDrawerAdapter());
    }
}