Android Open Source - RadaeePDF-B4A P D F Grid Adt

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License

The source code is released under:
Apache License
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Java Source Code

package com.radaee.util;
/*from   w w w . ja v  a 2 s. c o  m*/
import java.io.File;
import java.util.Vector;


import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

public class PDFGridAdt extends BaseAdapter
{
  private Context m_context;
  private Handler m_hand_ui = new Handler()
  {
    public void handleMessage(Message msg)
    {
      PDFGridItem item = (PDFGridItem)msg.obj;
      item.page_set();
      notifyDataSetChanged();
      super.handleMessage(msg);
    }
  };
  private PDFGridThread m_thread;
  static protected int clr_back = 0xFFCCCCCC;
  static protected int clr_text = 0xFF000044;
  public class SnatchItem
  {
    public String m_path;
    public String m_name;
    public PDFGridItem m_item;
  }
  private Vector<SnatchItem> m_items = new Vector<SnatchItem>();
  private void insert_item( SnatchItem item )
  {
    int left = 0;
    int right = m_items.size() - 1;
    if( item.m_item.is_dir() )
    {
      while( left <= right )
      {
        int mid = (left + right)>>1;
        SnatchItem tmp = m_items.get(mid);
        if( !tmp.m_item.is_dir() )
          right = mid - 1;
        else
        {
          int ret = item.m_name.compareToIgnoreCase(tmp.m_name);
          if( ret == 0 )
          {
            left = mid;
            break;
          }
          if( ret > 0 ) left = mid + 1;
          else right = mid - 1;
        }
      }
    }
    else
    {
      while( left <= right )
      {
        int mid = (left + right)>>1;
        SnatchItem tmp = m_items.get(mid);
        if( tmp.m_item.is_dir() )
          left = mid + 1;
        else
        {
          int ret = item.m_name.compareToIgnoreCase(tmp.m_name);
          if( ret == 0 )
          {
            left = mid;
            break;
          }
          if( ret > 0 ) left = mid + 1;
          else right = mid - 1;
        }
      }
    }
    m_items.insertElementAt(item, left);
  }
  public void destroy()
  {
    int cur = 0;
    int cnt = m_items.size();
    while( cur < cnt )
    {
      m_items.get(cur).m_item.page_destroy();
      cur++;
    }
    m_thread.destroy();
    m_items.clear();
  }
  public void set_dir( File file, boolean need_up )
  {
    int cur = 0;
    int cnt = m_items.size();
    while( cur < cnt )
    {
      m_items.get(cur).m_item.page_destroy();
      cur++;
    }
    m_items.clear();
    if( need_up )
    {
      SnatchItem item = new SnatchItem();
      item.m_name = "..";
      item.m_path = null;
      item.m_item = new PDFGridItem(m_context, null);
      item.m_item.set_dir(item.m_name, item.m_path);
      insert_item( item );
    }

    File files[] = file.listFiles();
    if( files == null )
    {
      notifyDataSetChanged();
      return;
    }
    cur = 0;
    cnt = files.length;
    while( cur < cnt )
    {
      if( !files[cur].isHidden() )
      {
        if( files[cur].isFile() )
        {
          String name = files[cur].getName();
          int len = name.length();
          if( len > 4 )
          {
            String ext = name.substring(name.length() - 4);
            if( ext.compareToIgnoreCase(".pdf") == 0 )
            {
              SnatchItem item = new SnatchItem();
              item.m_name = files[cur].getName();
              item.m_path = files[cur].getPath();
              item.m_item = new PDFGridItem(m_context, null);
              item.m_item.set_file(m_thread, item.m_name, item.m_path);
              insert_item( item );
            }
          }
        }
        if( files[cur].isDirectory() )
        {
          SnatchItem item = new SnatchItem();
          item.m_name = files[cur].getName();
          item.m_path = files[cur].getPath();
          item.m_item = new PDFGridItem(m_context, null);
          item.m_item.set_dir(item.m_name, item.m_path);
          insert_item( item );
        }
      }
      cur++;
    }
    notifyDataSetChanged();
  }
  public PDFGridAdt( Context ctx )
  {
    m_context = ctx;
    m_thread = new PDFGridThread( m_hand_ui );
    m_thread.start();
  }
  public int getCount()
  {
    return m_items.size();
  }

  public Object getItem(int arg0)
  {
    return m_items.get(arg0);
  }

  public long getItemId(int position)
  {
    return 0;
  }

  public View getView(int position, View convertView, ViewGroup parent)
  {
    return m_items.get(position).m_item;
  }

}
Java Source Code List
