package com.google.marvin.config;



import java.util.ArrayList;



import android.content.Context;

import android.graphics.Canvas;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ListView;



/**

 * A ListView for dealing with applications that can be installed.

 * This list will filter out already installed apps and not display them.

 * 

 * @author clchen@google.com (Charles L. Chen)

 */

public class AppListView extends ListView {

  private AppListAdapter appListAdapter;

  private ArrayList<AppDesc> appDescs;

  private Context ctx;



  public AppListView(Context context) {

    super(context);

    ctx = context;



    ArrayList<AppDesc> appDescs = new ArrayList<AppDesc>();

    AppDesc dummyApp = new AppDesc("", "", "");

    appDescs.add(dummyApp);

    appListAdapter = new AppListAdapter(ctx, appDescs);

    setAdapter(appListAdapter);



    setOnItemClickListener(new OnItemClickListener() {

      public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long rowId) {

        String packageName = appListAdapter.getPackageName((int) rowId);

        ctx.startActivity(Utils.getMarketIntent(packageName));

      }

    });

  }



  public void updateApps(ArrayList<AppDesc> apps) {

    appDescs = new ArrayList<AppDesc>();

    for (int i = 0; i < apps.size(); i++) {

      AppDesc app = apps.get(i);

      if (!Utils.applicationInstalled(ctx, app.getPackageName())) {

        appDescs.add(app);

      }

    }

    if (appDescs.size() < 1) {

      appDescs.add(new AppDesc("", ctx.getString(R.string.allAppsInstalledTitle), ctx.getString(R.string.allAppsInstalledMessage)));

    }

  }



  @Override

  protected void onDraw(Canvas canvas) {

    // Only try to update the adapter if there are new apps to update it with.

    if (appDescs != null) {

      appListAdapter = null;

      appListAdapter = new AppListAdapter(ctx, appDescs);

      setAdapter(appListAdapter);

      appDescs = null;

    }

    super.onDraw(canvas);

  }



}