Accessing objects in lists

List Objects

Various objects in the document's object model inherit from Document Object Model - DocumentListBase. Examples are "document.colors", "document.variables", "document.pages", "document.pages[0].frames", etc.

Object Descriptors for lists

To gain access to items within lists, you can use a "[]" annotation to provide one of the following descriptors to get an item (which will be evaluated in this order):

• ID
• Index
• Name
• Tag

function GetInfo()
{
   //GET A VARIABLE VALUE
   var myVariable = editor.GetObject("document.variables[MY_VARIABLE_NAME]");
   alert(myVariable.name);
   //SET A VARIABLE VALUE, USING AN ID
   editor.SetProperty("document.variables[" + myVariable.id + "]","value","NEW VALUE");

   //GET THE FIRST FRAME ON THE FIRST PAGE
   var myFrame = editor.GetObject("document.pages[0].frames[0]");
}

Looping through a list

You can use the "length" property of a list to get its amount of items, and use that to build an object descriptor within a loop:

function ListVariables()
{
   //GET A VARIABLE VALUE
   var numVariables = editor.GetObject("document.variables").length;
   var names = "";
   for (var a=0;a<numVariables;a++)
   {
      var myVariable = editor.GetObject("document.variables[" + a + "]");
      names += myVariable.name + "\n";
   }
   alert(names);
}

Accessing Frames

Frames are part of a page, and typically are accessed either through the selected frame (see Accessing selected frames and other resources). For example:

function GetFirstFrame()
{
   var myFrame = editor.GetObject("document.pages[0].frames[0]");
   return myFrame;
}

There is however also a helper-property, "allFrames", on the document level, which can be used to find frames throughout the document, for example based on a tag or ID:

function GetFrameByDescriptor(desc)
{
   var myFrame = editor.GetObject("document.allFrames[" + desc + "]");
   return myFrame;
}

Selecting a frame in the editor

It is possible to trigger the selection of a frame via Javascript.
Most of the times, this will be done with a tagged frame, but the selection of a specific frame can be done as described above, underneath "Object descriptors for lists"

The sample below will select a frame that has been tagged as 'BG_IMAGE'.

function selectFrameWithTag(){
    var frametag = "BG_IMAGE";
	editor.ExecuteFunction('document.allFrames[' + frametag + ']', 'Select');
}