GetMoreThemes.java :  » Widget » android-digiclockwidget » com » davidgoemans » simpleClockWidget » Android Open Source

package com.davidgoemans.simpleClockWidget;

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

import android.app.ExpandableListActivity;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class GetMoreThemes extends ExpandableListActivity implements IThemeListListener 
{
  ThemeManager manager;
  
  Lock listLock;

  private List<DigiTheme> onlineThemes = null;
  private List<DigiTheme> offlineThemes = null;
  
  private ThemeListAdapter adapter;

  @Override
  public void onCreate(Bundle savedInstanceState) 
  {
    listLock = new ReentrantLock();
    
    onlineThemes = new ArrayList<DigiTheme>();
    offlineThemes = new ArrayList<DigiTheme>();

    super.onCreate(savedInstanceState);
    
        // Set up our adapter
        adapter = new ThemeListAdapter(this);
        setListAdapter(adapter);
        
        getExpandableListView().expandGroup(0);
        getExpandableListView().expandGroup(1);
        
    manager = new ThemeManager();
    manager.populateThemes(this, this);
  }
  
  List<DigiTheme> getListForGroup(int group)
  {
    switch(group)
    {
    case 0:
      return offlineThemes;
    case 1:
      return onlineThemes;
    default:
      return null;
    }
  }
  
  @Override
  public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) 
  {
    listLock.lock();
    
    List<DigiTheme> themes = getListForGroup(groupPosition);
    DigiTheme theme = themes.get(childPosition);
    
        if (theme.ImageLocation == null
          && theme.ImageResourceID == -1) 
    {
      Toast.makeText(GetMoreThemes.this, 
          "Please wait for the image to download", Toast.LENGTH_LONG).show();
      listLock.unlock();
      
      return super.onChildClick(parent, v, groupPosition, childPosition, id);
    }
    
    Toast.makeText(GetMoreThemes.this, 
        "Theme selected: " + theme.Name + " by " + theme.Creator, 
        Toast.LENGTH_SHORT).show();
    
    SharedPreferences prefs = getSharedPreferences(SimpleClockWidget.PREFS_NAME, 0);
    SharedPreferences.Editor ed = prefs.edit();
    
    // Cleanup when done to save local space
    for( DigiTheme toDelete : onlineThemes )
    {
      if( toDelete.ImageLocation != theme.ImageLocation && toDelete.ImageLocation != prefs.getString("bgPath", null) )
      {
        getApplication().deleteFile(toDelete.Name + ".png");
      }
    }

    if (theme.ImageLocation != null) 
    {
      Log.d("DigiClock", "Got Image: " + theme.ImageLocation);
      ed.putInt("colorId", -1);
      ed.putString("bgPath", theme.ImageLocation);
    }
    else
    {
      Log.d("DigiClock", "Got Layout: " + theme.LayoutResourceID);
      ed.putInt("colorId", childPosition);
      ed.remove("bgPath");
    }

    ed.putBoolean("invalidate", true);

    ed.commit();

    manager.terminate();
    
    finish();
    
    listLock.unlock();
    
    return super.onChildClick(parent, v, groupPosition, childPosition, id);
  }

  
  @Override
  protected void onPause() 
  {
    super.onPause();
  }
  
  @Override
  public void finish() 
  {
    manager.terminate();
    super.finish();
  }

  int firstOnlineIndex = 0;
  
  @Override
  public void listChanged(List<DigiTheme> themes) 
  {
    listLock.lock();
        
    if( firstOnlineIndex == 0 )
    {
      for (DigiTheme theme : themes) 
      {
        if (theme.URL != null)
        {
          break;
        }
        
        firstOnlineIndex++;
      }
    }
    
    if( offlineThemes.size() == 0 )
    {    
      offlineThemes.addAll( themes.subList(0, firstOnlineIndex) );
    }
    
    onlineThemes.clear();
    onlineThemes.addAll( themes.subList(firstOnlineIndex, themes.size()) );
    
    listLock.unlock();
    
    getExpandableListView().invalidateViews();
    adapter.notifyDataSetChanged();
  }
  
    public class ThemeListAdapter extends BaseExpandableListAdapter 
    {
        private String[] groups = { "Offline Themes", "Online Themes" };
        Context context;
        
        public ThemeListAdapter(Context context) 
        {
      this.context = context;
    }

        public Object getChild(int groupPosition, int childPosition) 
        {
          Object toReturn = null;
          listLock.lock();
          
          toReturn = getListForGroup(groupPosition).get(childPosition);
          
          listLock.unlock();
          
          return toReturn;
        }

        public long getChildId(int groupPosition, int childPosition) 
        {
            return childPosition;
        }

        public int getChildrenCount(int groupPosition) 
        {
          int size = 0;
          listLock.lock();
          
          size = getListForGroup(groupPosition).size();
          listLock.unlock();
          
          return size;
        }

        public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
                View convertView, ViewGroup parent) 
        {
          View view = convertView;
          if( convertView == null )
          {
            view = getLayoutInflater().inflate(R.layout.theme_list_item, null);
          }

            listLock.lock();
            
            DigiTheme current = (DigiTheme)getChild(groupPosition, childPosition);
            
            TextView textView = (TextView)view.findViewById(R.id.theme_name);
            textView.setText(current.Name);
            
            textView = (TextView)view.findViewById(R.id.theme_creator);
            textView.setText("by "+ current.Creator);
            
            textView = (TextView)view.findViewById(R.id.theme_price);
            if( current.Paid() )
            {
              NumberFormat formatter = new DecimalFormat("$0.00");
              textView.setText(formatter.format(current.Price));
            }
            else
            {
              textView.setText("FREE");
            }
            
            ImageView imageView = (ImageView)view.findViewById(R.id.theme_image);
            
            if (current.ImageLocation != null) 
      {
        imageView.setImageBitmap(BitmapFactory.decodeFile(current.ImageLocation));
      } 
      else if (current.ImageResourceID != -1) 
      {
        imageView.setImageResource(current.ImageResourceID);
      }
      else
      {
        imageView.setImageResource(R.drawable.blank);
      }
            
            listLock.unlock();
            
            return view;
        }

        public Object getGroup(int groupPosition) 
        {
            return groups[groupPosition];
        }

        public int getGroupCount() 
        {
            return groups.length;
        }

        public long getGroupId(int groupPosition) 
        {
            return groupPosition;
        }

        public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) 
        {
            TextView textView = new TextView(context);
            textView.setPadding(50,10,0,10);
            textView.setTextSize(22);
            textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
            textView.setText(getGroup(groupPosition).toString());
            return textView;
        }

        public boolean isChildSelectable(int groupPosition, int childPosition) 
        {
            return true;
        }

        public boolean hasStableIds() 
        {
            return true;
        }

    }
}