Android Open Source - unmp Library Fragment

From Project

Back to project page unmp.
License

The source code is released under:
MIT License
If you think the Android project unmp listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package com.parnswir.unmp;
/*from w  ww .  jav  a2  s  . co  m*/
import java.util.ArrayList;
import java.util.List;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.parnswir.unmp.core.C;
import com.parnswir.unmp.media.FileAdditionThread;
import com.parnswir.unmp.media.FileCrawlerThread;
import com.parnswir.unmp.media.FileRemovalThread;

public class LibraryFragment extends AbstractFragment {
   
    private ListView libraryFolders;
    private ArrayList<String> folders = new ArrayList<String>();
  private int numberOfFoldersInLibrary = -1;
  private List<FileCrawlerThread> fileCrawlers;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
      rootView = super.onCreateView(inflater, container, savedInstanceState);
      
      inflate(R.layout.library_fragment);
      showActionBar();
      showTitle("Manage your library");
      
      libraryFolders = (ListView) rootView.findViewById(R.id.libraryFolders);
      onShowLibrary();
      
        return rootView; 
    }
    
    
    public void onShowLibrary() {
      fileCrawlers = new ArrayList<FileCrawlerThread>();
      
    setupPreferences();
    setupFolderList();
  }
  
  
  private void setupFolderList() {
    folders.clear();
    folders.addAll(getLibraryFolders());
    folders.add(getString(R.string.addFolderToLibrary));
    libraryFolders = (ListView) rootView.findViewById(R.id.libraryFolders);
    libraryFolders.setAdapter(new ArrayAdapter<String>(activity, R.layout.drawer_list_item, folders));
    libraryFolders.setOnItemClickListener(new FolderClickListener());
    libraryFolders.setOnItemLongClickListener(new FolderClickListener());
  }
  
  
  private ArrayList<String> getLibraryFolders() {
    ArrayList<String> list = new ArrayList<String>();
    for (int i = 0; i < numberOfFoldersInLibrary; i++) {
      list.add(preferences.getString(C.FOLDER + Integer.toString(i), ""));
    }
    return list;
  }
  
  
  private class FolderClickListener implements ListView.OnItemClickListener, ListView.OnItemLongClickListener {
      @Override
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
          handleAddFolderClick(view);
        return;
      }

    @Override
    public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
      handleAddFolderClick(view);
      if (! clickedAddFolder(view)) {
        deleteFolderFromLibrary(position);
      }
      return true;
    }
    
    private void handleAddFolderClick(View view) {
      if (clickedAddFolder(view)) {
        showDirectorySelector();
      }
    }
    
    private boolean clickedAddFolder(View view) {
      TextView item = (TextView) view;
          String selectedText = item.getText().toString();
          String addFolder = getString(R.string.addFolderToLibrary);
          
          return selectedText.equals(addFolder);
    }
  }
  
  
  private void showDirectorySelector() {
    DirectoryChooserDialog directoryChooserDialog = new DirectoryChooserDialog(
      activity, 
          new DirectoryChooserDialog.ChosenDirectoryListener() {
              @Override
              public void onChosenDir(String chosenDir) {
          ArrayAdapter<String> adapter = getFolderListAdapter();
                  if (adapter.getPosition(chosenDir) == -1) {
                    addFolderToLibrary(chosenDir);
                    folders.add(0, chosenDir);
                    adapter.notifyDataSetChanged();
                    numberOfFoldersInLibrary += 1;
                    savePreferences();
                  }
              }
    });
    directoryChooserDialog.setNewFolderEnabled(false);
    directoryChooserDialog.chooseDirectory();
  }
  
  
  private void deleteFolderFromLibrary(final int position) {
    new AlertDialog.Builder(activity)
        .setMessage("Do you want to remove this folder from your library?")
        .setCancelable(false)
        .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
        ArrayAdapter<String> adapter = getFolderListAdapter();
        removeFolderFromLibrary(folders.get(position));
        folders.remove(position);
                adapter.notifyDataSetChanged();
                numberOfFoldersInLibrary -= 1;
                savePreferences();
            }
        })
        .setNegativeButton("No", null)
        .show();
  }

  
  private void setupPreferences() {
    numberOfFoldersInLibrary = preferences.getInt(C.NUMBEROFFOLDERS, 0);
  }
  
  
  private void savePreferences() {
    ArrayAdapter<String> adapter = getFolderListAdapter();
    SharedPreferences.Editor editor = preferences.edit();
    
    editor.putInt(C.NUMBEROFFOLDERS, numberOfFoldersInLibrary);
    for (int i = 0; i < numberOfFoldersInLibrary; i++) {
      editor.putString(C.FOLDER + Integer.toString(i), adapter.getItem(i));
    }
    editor.apply();
  }
  
  
  @SuppressWarnings("unchecked")
  private ArrayAdapter<String> getFolderListAdapter() {
    return ((ArrayAdapter<String>) libraryFolders.getAdapter());
  }
  
  
  private void addFolderToLibrary(String folder) {
    stopAll(FileAdditionThread.class);
    FileCrawlerThread crawler = new FileAdditionThread(DB, folder);
    addFileCrawler(crawler);
  }
  
  
  private void removeFolderFromLibrary(String folder) {
    stopAll(FileRemovalThread.class);
    FileRemovalThread crawler = new FileRemovalThread(DB, folder);
    addFileCrawler(crawler);
  }
  
  
  private void stopAll(Class<?> threadType) {
    int i = 0;
    while (i < fileCrawlers.size()) {
      if (fileCrawlers.get(i).getClass() == threadType) {
        fileCrawlers.get(i).kill();
        fileCrawlers.remove(i);
      } else {
        i += 1;
      }
    }
  }
  
  
  private void addFileCrawler(FileCrawlerThread thread) {
    thread.callback.addObserver(activity);
    fileCrawlers.add(thread);
    thread.start();
  }
    
}
Java Source Code List
