FileList extends ListView : ListView « UI « Android

1. Android
2. UI
3. ListView

FileList extends ListView

   
//package com.FileBrowser;

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

interface OnFileSelectedListener {

  public void onSelected(String path, String fileName);

}

interface OnNotifyEventListener {

  public void onNotify(Object sender);

}

interface OnPathChangedListener {

  public void onChanged(String path);

}

public class FileList extends ListView {

  public FileList(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    init(context);
  }

  public FileList(Context context, AttributeSet attrs) {
    super(context, attrs);

    init(context);
  }

  public FileList(Context context) {
    super(context);

    init(context);
  }

  private void init(Context context) {
    _Context = context;
    setOnItemClickListener(_OnItemClick);
  }

  private Context _Context = null;
  private ArrayList<String> _List = new ArrayList<String>();
  private ArrayList<String> _FolderList = new ArrayList<String>();
  private ArrayList<String> _FileList = new ArrayList<String>();
  private ArrayAdapter<String> _Adapter = null;

  // Property
  private String _Path = "";

  // Event
  private OnPathChangedListener _OnPathChangedListener = null;
  private OnFileSelectedListener _OnFileSelectedListener = null;

  private boolean openPath(String path) {
    _FolderList.clear();
    _FileList.clear();

    File file = new File(path);
    File[] files = file.listFiles();
    if (files == null)
      return false;

    for (int i = 0; i < files.length; i++) {
      if (files[i].isDirectory()) {
        _FolderList.add("<" + files[i].getName() + ">");
      } else {
        _FileList.add(files[i].getName());
      }
    }

    Collections.sort(_FolderList);
    Collections.sort(_FileList);

    _FolderList.add(0, "<..>");

    return true;
  }

  private void updateAdapter() {
    _List.clear();
    _List.addAll(_FolderList);
    _List.addAll(_FileList);

    _Adapter = new ArrayAdapter<String>(_Context,
        android.R.layout.simple_list_item_1, _List);
    setAdapter(_Adapter);
  }

  public void setPath(String value) {
    if (value.length() == 0) {
      value = "/";
    } else {
      String lastChar = value.substring(value.length() - 1,
          value.length());
      if (lastChar.matches("/") == false)
        value = value + "/";
    }

    if (openPath(value)) {
      _Path = value;
      updateAdapter();
      if (_OnPathChangedListener != null)
        _OnPathChangedListener.onChanged(value);
    }
  }

  public String getPath() {
    return _Path;
  }

  public void setOnPathChangedListener(OnPathChangedListener value) {
    _OnPathChangedListener = value;
  }

  public OnPathChangedListener getOnPathChangedListener() {
    return _OnPathChangedListener;
  }

  public void setOnFileSelected(OnFileSelectedListener value) {
    _OnFileSelectedListener = value;
  }

  public OnFileSelectedListener getOnFileSelected() {
    return _OnFileSelectedListener;
  }

  public String DelteRight(String value, String border) {
    String list[] = value.split(border);

    String result = "";

    for (int i = 0; i < list.length; i++) {
      result = result + list[i] + border;
    }

    return result;
  }

  private String delteLastFolder(String value) {
    String list[] = value.split("/");

    String result = "";

    for (int i = 0; i < list.length - 1; i++) {
      result = result + list[i] + "/";
    }

    return result;
  }

  private String getRealPathName(String newPath) {
    String path = newPath.substring(1, newPath.length() - 1);

    if (path.matches("..")) {
      return delteLastFolder(_Path);
    } else {
      return _Path + path + "/";
    }
  }

  private AdapterView.OnItemClickListener _OnItemClick = new AdapterView.OnItemClickListener() {
    public void onItemClick(AdapterView<?> arg0, View arg1, int position,
        long id) {
      String fileName = getItemAtPosition(position).toString();
      if (fileName.matches("<.*>")) {
        setPath(getRealPathName(fileName));
      } else {
        if (_OnFileSelectedListener != null)
          _OnFileSelectedListener.onSelected(_Path, fileName);
      }
    }
  };

}

   
    
    
  

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