Subversion Repositories ES

package de.pointedears.converter;

/*

 * Copyright (C) 2007 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

import java.text.Collator;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import android.app.ListActivity;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.os.Bundle;

import android.view.View;

import android.widget.ListView;

import android.widget.SimpleAdapter;

/**

 * Generates the main menu as a list of activities from the manifest

 *

 * @author

 *         Thomas 'PointedEars' Lahn;

 *         Class courtesy of The Android Open Source Project

 *         (Android 2.2 SDK Examples), slightly adapted

 */

public class MenuActivity extends ListActivity

{

  @Override

  public void onCreate(Bundle savedInstanceState)

  {

    super.onCreate(savedInstanceState);

    Intent intent = this.getIntent();

    String path = intent.getStringExtra("de.pointedears.converter.Path"); //$NON-NLS-1$

    if (path == null)

    {

      path = ""; //$NON-NLS-1$

    }

    this.setListAdapter(new SimpleAdapter(this, this.getData(path),

                android.R.layout.simple_list_item_1, new String[] { "title" }, //$NON-NLS-1$

      new int[] { android.R.id.text1 }));

    this.getListView().setTextFilterEnabled(true);

  }

  /**

   * @param prefix

   * @return

   */

  protected List getData(String prefix)

  {

    List<Map> myData = new ArrayList<Map>();

    Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);

    mainIntent.addCategory(ConverterApplication.CATEGORY_CONVERTER);

    PackageManager pm = this.getPackageManager();

    List<ResolveInfo> list = pm.queryIntentActivities(mainIntent, 0);

    if (null == list)

    {

      return myData;

    }

    String[] prefixPath;

    if (prefix.equals("")) //$NON-NLS-1$

    {

      prefixPath = null;

    }

    else

    {

      prefixPath = prefix.split("/"); //$NON-NLS-1$

    }

    int len = list.size();

    Map<String, Boolean> entries = new HashMap<String, Boolean>();

    for (int i = 0; i < len; i++)

    {

      ResolveInfo info = list.get(i);

      CharSequence labelSeq = info.loadLabel(pm);

      String label = labelSeq != null

                    ? labelSeq.toString()

                    : info.activityInfo.name;

      if (prefix.length() == 0 || label.startsWith(prefix))

      {

        String[] labelPath = label.split("/"); //$NON-NLS-1$

        String nextLabel =

          prefixPath == null ? labelPath[0] : labelPath[prefixPath.length];

        if ((prefixPath != null ? prefixPath.length : 0) == labelPath.length - 1)

        {

          this.addItem(myData, nextLabel, this.activityIntent(

                            info.activityInfo.applicationInfo.packageName,

                            info.activityInfo.name));

        }

        else

        {

          if (entries.get(nextLabel) == null)

          {

            this.addItem(

              myData,

              nextLabel,

              this.browseIntent(prefix.equals("") ? nextLabel : prefix + "/" //$NON-NLS-1$//$NON-NLS-2$

                + nextLabel));

            entries.put(nextLabel, true);

          }

        }

      }

    }

    Collections.sort(myData, MenuActivity.sDisplayNameComparator);

    return myData;

  }

  private final static Comparator<Map> sDisplayNameComparator =

    new Comparator<Map>() {

      private final Collator collator = Collator.getInstance();

      public int compare(Map map1, Map map2)

      {

        return this.collator.compare(map1.get("title"), map2.get("title")); //$NON-NLS-1$ //$NON-NLS-2$

      }

    };

  /**

   * @param pkg

   * @param componentName

   * @return

   */

  protected Intent activityIntent(String pkg, String componentName)

  {

    Intent result = new Intent();

    result.setClassName(pkg, componentName);

    return result;

  }

  /**

   * @param path

   * @return

   */

  protected Intent browseIntent(String path)

  {

    Intent result = new Intent();

    result.setClass(this, MenuActivity.class);

    result.putExtra("de.pointedears.converter.Path", path); //$NON-NLS-1$

    return result;

  }

  /**

   * @param data

   * @param name

   * @param intent

   */

  protected void addItem(List<Map> data, String name, Intent intent)

  {

    Map<String, Object> temp = new HashMap<String, Object>();

    temp.put("title", name); //$NON-NLS-1$

    temp.put("intent", intent); //$NON-NLS-1$

    data.add(temp);

  }

  /*

   * (non-Javadoc)

   *

   * @see android.app.ListActivity#onListItemClick(android.widget.ListView,

   * android.view.View, int, long)

   */

  @Override

  protected void onListItemClick(ListView l, View v, int position, long id)

  {

    Map map = (Map) l.getItemAtPosition(position);

    Intent intent = (Intent) map.get("intent"); //$NON-NLS-1$

    this.startActivity(intent);

  }

}