Separate all objects in one layer to new layers

Hi Brian,

I would do this spread by spread and to get stacking order right I would loop the allPageItems array of the spread in reverse. Also note, that items in that array are ignored if parent is not the spread itself.

( function()
{
	
	app.scriptPreferences.userInteractionLevel = UserInteractionLevels.interactWithAll;
	app.doScript
	(
		moveEveryItemToOwnLayer,
		ScriptLanguage.JAVASCRIPT, 
		[], 
		UndoModes.ENTIRE_SCRIPT, 
		"Move every item to its own layer: Spread by Spread | SCRIPT"
	);
		
	function moveEveryItemToOwnLayer()
	{
		
		if( app.documents.length == 0 ){ return };
		
		var doc = app.documents[0];
		var spreads = doc.spreads.everyItem().getElements();
		
		for( var n=0; n<spreads.length; n++ )
		{
			var currentSpread = spreads[n];
			
			// To keep stacking order of elements, loop the array reversed or reverse the array first:
			var allItemsOnSpread = currentSpread.allPageItems.reverse();
			
			for( var a=0; a<allItemsOnSpread.length; a++)
			{
				// Is this a nested element? If so, do nothing and continue loop:
				if( allItemsOnSpread[a].parent != currentSpread ){ continue };
				
				// NOTE: Layer name is e.g. "spread-1-244-Rectangle" for the second spread and a rectangle with id 244.
				var newLayerName = "spread"+"-"+n+"-"+allItemsOnSpread[a].id  +"-"+ allItemsOnSpread[a].constructor.name ;
				var newLayer = doc.layers.add({ name : newLayerName });
				
				// We do not know what the active layer is, so always move the new layer to the top of the stack:
				newLayer.move( LocationOptions.AT_BEGINNING );
				
				// Finally assign the new layer to the page item:
				allItemsOnSpread[a].itemLayer = newLayer ;
			};
		};

	};
	
}() )

@Richard,

that script will ignore items on masters and will not work with items that are locked.

To add the said features is a task especially for you.

Cheers,
Uwe Laubender

( ACP )