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====== File Hex Viewer ======
===== Sample code =====
<code JavaScript hexView.js>
var picker,view,hv={};
//Called when application is started.
function OnStart()
{
    //Create a layout with objects vertically centered.
    var lay = app.CreateLayout( "linear", "Left" );       //Create a full screen scroller 
    var scroll = app.CreateScroller( 1.0, 0.95 ); 
    lay.AddChild( scroll ); 
  
    //Create a layout inside scroller. 
    var layScroll = app.CreateLayout( "Linear", "Left" ); 
    scroll.AddChild( layScroll ); 
      
    view=app.CreateWebView(1.5,0.95);
    layScroll.AddChild(view);

    //Add layout to app.    
    app.AddLayout( lay );
    var path="/sdcard/DroidScript/Hello World/Img/Hello World.png";
    hexViewStart(path,view);
}

function hexViewStart(fullPath,webView)
{
  hv={chunksize:1024,path:fullPath};
  hv.webView=webView;
  hv.file = app.CreateFile( hv.path, "r" );
  hv.len = hv.file.GetLength(); 
  hv.html="<p>"+fullPath+"</p><table>\n";
  hv.file.Seek( 0 );
  app.ShowProgress("Loading");
  hexViewChunk();
}

function hexViewChunk()
{
  var pos=hv.file.GetPointer();
  var whole = hv.file.ReadData( hv.chunksize,"int" );
  if(whole == undefined)
  {
       hexViewEnd();
       return;
  }
  var bull="&bull;";
  var int,hex,asc,hbuff,abuff,row;
  do
  {
    var data = whole.slice(0,8);
    whole=whole.slice(8);
    //var data = file.ReadData( 8,"int" );
    if(data==undefined) break;
    var len = data.length;
    hbuff="";
    abuff="<td style='background-color:#ddffdd;'>";
    var pos8="<td>"+
      ("00000000"+
      pos.toString(16)).slice(-8).toUpperCase() +
      "</td>";
    for(var i=0;i<len;i++)
    {
      int=data[i];
      hex=("0"+int.toString(16)).slice(-2);
      asc=bull;
      if(int>31 && int<127)
         asc=String.fromCharCode(int);
      if(asc=="<")asc="&lt;";
      hbuff+="<td>"+hex.toUpperCase()+"</td >";
      abuff+=asc;
    }
    abuff+="</td>";
    row="<tr>"+pos8+hbuff+abuff+"</tr>";
    if(len>0) hv.html +=row+"\n";
    pos+=len;
  }
  while(len > 0);
  setTimeout("hexViewChunk()",1);
}

function hexViewEnd()
{
  hv.html+="</table>";
  app.HideProgress();
  hv.webView.LoadHtml(hv.html);
  hv.file.Close();
}

function pickit()
{
    if( ! picker )
    {
       picker = new FilePicker(openit,"/");
       picker.SetFolder("/sdcard");
       picker.SetHideFiles(false);
    }
    picker.Show(picker);
    
}
function openit(pth)
{
     hexViewStart(pth,view);
}


</code>
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