moz1012ex.txt

mozilla developer book examples.

var rdfFileURL = 'chrome://jarfly/content/jar.rdf';
var gTreeBody = null;
var gListbox = null;
var gRDF = null;
function onload( )
{
  fileUtils = new FileUtils( );
  path = fileUtils.chrome_to_path(rdfFileURL);
  if(navigator.platform == "Win32") {
    path = path.replace(/\//g,"\\");
    // Only needed on Windows, until JSLib is fixed
  }
  gRDF = new RDFFile(path,'jar:flies','http://mozdev.org/fly-rdf#');
  gTreeBody = document.getElementById('tb');
  gTreeBody.database.AddDataSource(gRDF.dsource);
  gListbox  = document.getElementById('list');
  gListbox.database.AddDataSource(gRDF.dsource);
  rebuildLists( );
}
function rebuildLists( )
{
  gTreeBody.builder.rebuild( );
  gListbox.builder.rebuild( );
}
function update( )
{
  name      = document.getElementById('nameField').value;
  color     = document.getElementById('colorField').value;
  quantity  = document.getElementById('quantityField').value;
  seqNumber = -1;
  del       = false;
  replace   = false;
  if(document.getElementById('delete').checked)
    del = true;
  if(document.getElementById('replace').checked)
    replace = true;
  var seqLength = 0;
  if(gRDF.doesSeqExist('types'))
  {
    seqLength = gRDF.getSeqSubNodes('types').length;
    //if(del)gRDF.removeSeq('types',false);
  }
  else
    gRDF.addSeq('types');
  for(i=0;i<seqLength;i++)
  {
    tempItem = 'types:_' + (i+1);
    if(gRDF.getAttribute(tempItem,'name')==name)
      seqNumber = gRDF.getAttribute(tempItem,'number');
  }
  if(seqNumber == -1)
  {
    item = 'types:_' + (seqLength+1);
    gRDF.setAttribute(item,'name',name);
    gRDF.setAttribute(item,'number',seqLength+1);
  }
  else
  {
    item = 'types:_' + seqNumber;
    gRDF.setAttribute(item,'number',seqNumber);
  }
  if(color!='')
    gRDF.setAttribute(item,'color',color);
  if(quantity!='')
  {
    gRDF.setAttribute(item,'quantity',quantity);
    gRDF.setAttribute(item,'dead',calcDead(quantity,replace));
  }
  if(!del)
    gRDF.addNode(item);
  else
    gRDF.removeNode(item);
  gRDF.flush( );
  onload( );
}
function calcDead(quantity,replace)
{
  if(!replace)
  {
    v = parseInt( (quantity * Math.random( )) * 0.13 );
    return (v.toString( ));
  }
  else
    return 0;
}
function changeC(color)
{
  document.getElementById('colorField').value=color;
}
function changeQ(quantity)
{
  document.getElementById('quantityField').value=quantity;
}