EventsSimpleCategoryActivity.java

package edu.mit.mitmobile2.events;

import java.util.List;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Menu;
import android.view.View;
import android.widget.ListView;
import android.widget.Toast;

import edu.mit.mitmobile2.FullScreenLoader;
import edu.mit.mitmobile2.MobileWebApi;
import edu.mit.mitmobile2.Module;
import edu.mit.mitmobile2.ModuleActivity;
import edu.mit.mitmobile2.R;
import edu.mit.mitmobile2.SimpleArrayAdapter;
import edu.mit.mitmobile2.TitleBar;
import edu.mit.mitmobile2.TwoLineActionRow;
import edu.mit.mitmobile2.events.EventsModel.EventType;
import edu.mit.mitmobile2.objs.EventCategoryItem;

public class EventsSimpleCategoryActivity extends ModuleActivity {

	private Context mContext;
	private ListView mListView;
	private FullScreenLoader mLoadingView;
	private TitleBar mTitleBar;
	
	private String mSourceId;
	private EventType mEventType;
	private String mSourceName;
	
	final static String SOURCE_ID_KEY = "source_id";	
	
	public static void launch(Context context, String eventTypeId) {
		Intent intent = new Intent(context, EventsSimpleCategoryActivity.class);
		intent.putExtra(SOURCE_ID_KEY, eventTypeId);
		context.startActivity(intent);		
	}
	
	public static void launch(Context context, EventType type) {
		launch(context, type.getTypeId());	
	}
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.events_categories);
		
		Bundle extras = getIntent().getExtras();
		mSourceId = extras.getString(SOURCE_ID_KEY);
		
		mListView = (ListView) findViewById(R.id.eventsCategoryLV);	
		mLoadingView = (FullScreenLoader) findViewById(R.id.eventsCategoriesLoading);
		mContext = this;
		

		mLoadingView.showLoading();
		if(EventsModel.eventTypesLoaded()) {
			startLoadingCategories();
		} else {
			EventsModel.fetchEventTypes(this, new Handler() {
				@Override
				public void handleMessage(Message message) {
					if(message.arg1 == MobileWebApi.SUCCESS) {
						startLoadingCategories();
					} else {
						mLoadingView.showError();
					}
				}
			});
		}
	}
	
	private void startLoadingCategories() {
		mEventType = EventsModel.getEventType(mSourceId);
		if (mEventType == null) {
			mLoadingView.showError();
			Toast.makeText(this, "Calendar for category not found", Toast.LENGTH_LONG);
			return;
		}
		mSourceName = mEventType.getShortName();
		mTitleBar.setTitle(mSourceName);
		EventsModel.fetchCategories(this, mEventType, handleCategories());
	}
	
	private Handler handleCategories() {
		return new Handler() {
			
			@Override
			public void handleMessage(Message message) {
				if(message.arg1 == MobileWebApi.SUCCESS) {
					List<EventCategoryItem> categories = EventsModel.getCategories(mEventType);
					loadCategories(categories);
				} else {
					mLoadingView.showError();
				}
			}
		};
	}
	
	private void loadCategories(List<EventCategoryItem> categories) {
		SimpleArrayAdapter<EventCategoryItem> adapter = new EventCategoryArrayAdapter(mContext, categories);
		adapter.setOnItemClickListener(mListView, 
			new SimpleArrayAdapter.OnItemClickListener<EventCategoryItem>() {
				@Override
				public void onItemSelected(EventCategoryItem item) {
					// hard code the open house to show april 30th;
					Long startTime = null;
					if(mEventType.getTypeId().equals("OpenHouse")) {
						startTime = 1304179200L * 1000; // April 30th, 2011
					}
					MITEventsDaysSliderActivity.launchCategory(mContext, item.catid, item.name, mEventType.getTypeId(), startTime);						
				}
			}
		);
		mListView.setAdapter(adapter);
		
		
		mLoadingView.setVisibility(View.GONE);
		mListView.setVisibility(View.VISIBLE);
	}
	
	@Override
	protected Module getModule() {
		return new EventsModule();
	}

	@Override
	public boolean isModuleHomeActivity() {
		return false;
	}

	private class EventCategoryArrayAdapter extends SimpleArrayAdapter<EventCategoryItem> {

		public EventCategoryArrayAdapter(Context context, List<EventCategoryItem> items) {
			super(context, items, R.layout.events_category_row);
		}

		@Override
		public void updateView(EventCategoryItem item, View view) {
			TwoLineActionRow actionRow = (TwoLineActionRow) view;
			actionRow.setTitle(item.name);
		}	
	}

	@Override
	protected void prepareActivityOptionsMenu(Menu menu) {
		menu.add(0, MENU_SEARCH, Menu.NONE, MENU_SEARCH_TITLE)
			.setIcon(R.drawable.menu_search);		
	}
}