FrontpageActivity.java

package com.geel9.facepunch.activities;

import com.actionbarsherlock.app.ActionBar;
import com.geel9.facepunch.APISession.Category;
import com.geel9.facepunch.APISession.Forum;
import com.geel9.facepunch.APISession.ForumCallback;
import com.geel9.facepunch.R.id;
import com.geel9.facepunch.R.layout;
import com.geel9.facepunch.R.string;

import com.geel9.facepunch.APISession;
import com.geel9.facepunch.R;

import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;

public class FrontpageActivity extends FPActivity
{
	// Used for restoring list
	private class State
	{
		Category[] categories;
		int scrollY;
	}
	
	@Override
	public void OnRefreshPressed(){
		loadForums();
		super.OnRefreshPressed();
	}
	
	@Override
	public void OnLogout(){
		loadForums();
		super.OnLogout();
	}
	
	@Override
	public void OnLogin(){
		loadForums();
		super.OnLogin();
	}

	private Category[] displayedCategories;

	@Override
	public void onBackPressed() {
		super.onBackPressed();
		//return;
	}

	@Override
	public void onCreate( Bundle savedInstanceState )
	{
		// Load layout
		super.onCreate( savedInstanceState );
		setContentView( R.layout.frontpage );

		ActionBar action = ActionBar();
		if(action != null){
			action.setHomeButtonEnabled(false);
			action.setTitle("Facepunch");
		}
		
		// Restore forum list
		final State data = (State)getLastCustomNonConfigurationInstance();
		if ( data != null )
		{
			if(data.categories == null){
				loadForums();
				return;
			}
			populateList( data.categories );

			final ScrollView scroller = (ScrollView)findViewById( R.id.scroller );
			scroller.post( new Runnable()
			{
				public void run()
				{
					scroller.scrollTo( 0, data.scrollY );
				}
			} );
			return;
		}

		loadForums();
	}

	public void loadForums(){
		CheckLoginState();

		// Show loading spinner
		LayoutInflater inflater = (LayoutInflater)getSystemService( Context.LAYOUT_INFLATER_SERVICE );
		final LinearLayout forumList = (LinearLayout)findViewById( R.id.forumList );
		final ImageView loaderImage = (ImageView)inflater.inflate( R.layout.loadingspinner, forumList, false );
		forumList.removeAllViews();
		applyLoadingIcon( loaderImage );
		forumList.addView( loaderImage );
		forumList.setGravity( Gravity.CENTER_VERTICAL );

		// Fetch main categories and forums
		api.listForums(this, new APISession.ForumCallback()
		{
			public void onResult( boolean success, Category[] categories )
			{
				// Remove loading spinner
				forumList.removeView( loaderImage );
				forumList.setGravity( Gravity.NO_GRAVITY );

				if ( success && categories != null )
				{
					populateList( categories );
				} else {
					Toast.makeText( FrontpageActivity.this, getString( R.string.frontpageLoadingFailed ), Toast.LENGTH_SHORT ).show();
				}
			}
		} );
	}


	// Save activity state
	@Override
	public Object onRetainCustomNonConfigurationInstance()
	{
		State data = new State();

		data.categories = displayedCategories;
		data.scrollY = ( (ScrollView)findViewById( R.id.scroller ) ).getScrollY();

		return data;
	}

	// Populate list with categories and forums
	private void populateList( Category[] categories )
	{
		displayedCategories = categories;

		LayoutInflater inflater = (LayoutInflater)getSystemService( Context.LAYOUT_INFLATER_SERVICE );
		LinearLayout forumList = (LinearLayout)findViewById( R.id.forumList );

		// Populate list with results
		for ( Category cat : categories )
		{
			// Create header view
			LinearLayout header = (LinearLayout)inflater.inflate( R.layout.listheader, forumList, false );
			( (TextView)header.findViewById( R.id.headerTitle ) ).setText( cat.getName().toUpperCase() );
			forumList.addView( header );

			// Add forums
			LinearLayout lastForum = null;
			for ( final Forum forum : cat.getForums() )
			{
				LinearLayout forumItem = (LinearLayout)inflater.inflate( R.layout.listforum, forumList, false );
				( (TextView)forumItem.findViewById( R.id.forumTitle ) ).setText( forum.getName() );

				forumItem.setClickable(true);

				forumItem.setOnClickListener(new OnClickListener(){
					public void onClick(View v) {
						Intent forumIntent = new Intent().setClass(FrontpageActivity.this, ForumActivity.class);
						forumIntent.putExtra("forumId", forum.getId());
						forumIntent.putExtra("forumName", forum.getName());
						forumIntent.putExtra("subForums", forum.getSubForumsString());
						startActivity(forumIntent);
					}
				});

				// Attempt to find icon for this forum
				int resId = getResources().getIdentifier( "drawable/forumicon_" + forum.getId(), "drawable", getPackageName() );
				ImageView iconView = (ImageView)forumItem.findViewById( R.id.forumIcon );
				if ( resId != 0 )
					iconView.setImageResource( resId );
				else
					iconView.setVisibility( View.INVISIBLE );

				forumList.addView( forumItem );
				lastForum = forumItem;
			}

			// Modify separator of last forum to account for next category header
			View separator = lastForum.findViewById( R.id.listSeparator );
			separator.setBackgroundColor( Color.WHITE );
		}
		shamelesslyBeg();
	}
}