//Columns2Frames.jsx
/*
	This InDesign CS3 script can be used for replacing textframe columns with individual textframes. 
	Select a textframe first, then run the script.
	*/

// Use the findPage function to get the page the textframe is on
function findPage(theObj) { 
    var thePage = theObj; 
    if (thePage.hasOwnProperty("baseline")) { 
      thePage = thePage.parentTextFrames[0]; 
    } 
    while (thePage.constructor.name != "Page") { 
      var whatIsIt = thePage.constructor.name; 
      switch (whatIsIt) { 
        case "Story" : 
          thePage = thePage.textFrames[-1].parent; 
          break; 
        case  "Character" : 
          thePage = thePage.parentTextFrames[0]; 
          break; 
        case "Cell" : 
          try { 
            thePage = thePage.insertionPoints[0].parentTextFrames[0]; 
            break; 
          } catch (e) { 
            // must be overset, so ignore 
            return null; 
          } 
        case "Application" : 
          // must be off page, so ignore 
          return null; 
      } 
      thePage = thePage.parent; 
    } 
    return thePage 
  } 



if (app.selection.length != 1 || app.selection[0] != "[object TextFrame]") 
		{
			alert("To run this script please select a textframe first.");
			}
		else
			{
			//Get properties of textframe	
			var myDocument = app.activeDocument;
			var myTextFrame = app.selection[0];
			var myTextFramePrev = myTextFrame.previousTextFrame;
			var myTextFrameNext = myTextFrame.nextTextFrame;
			var myColAmount = myTextFrame.textFramePreferences.textColumnCount;
			var myMultipleCols = myColAmount - 1;  //The cols. after the first one
			var myTextFrameBounds =  myTextFrame.geometricBounds;
			var myGutterWidth = myTextFrame.textFramePreferences.textColumnGutter;
			var myColWidth = ( (myTextFrameBounds[3] - myTextFrameBounds[1]) - (myGutterWidth * myMultipleCols) ) / myColAmount; 
			var myGutterAmount = myTextFrame.textFramePreferences.textColumnCount;

			//Find the first textFrame in the thread that myTextFrame is in, get it's contents
			myFirstTextFrame = myTextFrame; 
			while (myFirstTextFrame.previousTextFrame == "[object TextFrame]")
				{
					myFirstTextFrame = myFirstTextFrame.previousTextFrame;
					}
			
			var myContents = myFirstTextFrame.contents;
			
			//Find the page to work on
			var myPage = findPage(myTextFrame);	
			
			// Create individual textframes if the original has more than one column
			if (myColAmount > 1)	
				{
					myTextFrame.label = "marked"; // Mark original textframe for removal
					var myNewFrames = new Array();
					
					//Create textframe for col. 1
					myNewFrames[0] = myPage.textFrames.add();
					myBounds = new Array();
					myBounds[0] =myTextFrameBounds[0];
					myBounds[1] = myTextFrameBounds[1];
					myBounds[2] = myTextFrameBounds[2];
					myBounds[3] = (myTextFrameBounds[1] +myColWidth);
					myNewFrames[0].geometricBounds = myBounds;
					myNewFrames[0].label = "0";

					//Create textframes for col. 2 -> end
					for (i = 1; i <= myMultipleCols; i ++)
						{
							myNewFrames[i] = myPage.textFrames.add();
							myBounds[1] = myBounds[3] + myGutterWidth;
							myBounds[3] = (myBounds[1] +myColWidth);
							myNewFrames[i].geometricBounds = myBounds;
							myNewFrames[i].label = (i + "") ;
							}

					//Link the new frames					
					for (i =myMultipleCols; i > 0; i --)
						{
							j = i - 1;	
							myNewFrames[i].previousTextFrame = myNewFrames[j];	
							}
					
					// If the texframe was part of a thread, relink the new frame to the thread
					if (myTextFramePrev != null) // If there was a frame before
						{
							myNewFrames[0].previousTextFrame = myTextFramePrev;
							}
					
					//If there was no frame before, but a frame after	
					if (myTextFrameNext != null  && myTextFramePrev == null) 
						{
							myNewFrames[myMultipleCols].nextTextFrame = myTextFrameNext;
							}	
						
					 // if there are no frames before or after
					if (myTextFramePrev == null && myTextFrameNext == null)	
						{ 
							myDocument.textFrames.itemByName("marked").nextTextFrame = myNewFrames[0];
							}
				
					//Remove original textFrame
					myDocument.textFrames.itemByName("marked").remove();
					}
			}