/*  
spaceBefore adds space before paragraphs with the scaling hack!
Version:     	1.0
License:	CC 
Last-Change:	18.04.2009

Gregor Fellenz
http://www.indesignblog.com/
*/


// Ab CS4 Skript Undo-Fähigkeit herstellen
try {
	if (app.version.substring(0,1) == "6") {
		var undoName 	= "SpaceBefore.jsx";
		app.doScript(main, undefined , undefined,UndoModes.fastEntireScript , undoName ); 
	} 
	else {
		if (app.version.substring(0,1) == "5") { main(); }
		else { alert ("Es wird mindestens InDesign CS3 benötigt ...") }
	}
} 
catch (e) {
	alert("Es ist ein Fehler aufgetreten!\n" + e + 
			"\nZeile: " + e.line  +
			"\nSkript: " + e.fileName );
}


function main () {
	const myOldXUnits = app.activeDocument.viewPreferences.horizontalMeasurementUnits;
	const myOldYUnits = app.activeDocument.viewPreferences.verticalMeasurementUnits;
	const myOldInteraction = app.scriptPreferences.userInteractionLevel;
	app.activeDocument.viewPreferences.horizontalMeasurementUnits = MeasurementUnits.points;
	app.activeDocument.viewPreferences.verticalMeasurementUnits = MeasurementUnits.points;
	app.scriptPreferences.userInteractionLevel = UserInteractionLevels.INTERACT_WITH_ALL;

	if (app.selection[0].constructor.name == "InsertionPoint") { 
		
		var myDialog = app.dialogs.add({name:"Abstand vor in mm",canCancel:true});
		var myPointSizeField = myDialog.dialogColumns.add().realEditboxes.add({editValue:5});
		//Display the dialog box.
		var abstandVor;
		var myResult = myDialog.show();
		if(myResult == true){
			abstandVor = myPointSizeField.editValue;
			myDialog.destroy();
		}
		else{ //User clicked Cancel, so remove the dialog box from memory.
			myDialog.destroy();
		}		
		var par = app.selection[0].paragraphs[0];
		//1mm == 2.834645669pt
		//par.spaceBefore = abstandVor + "mm";
		abstandVor = (abstandVor + (abstandVor/2.265)) * 2.834645669;
		var origGroesse = par.pointSize;
		
		par.pointSize = origGroesse + abstandVor
		// Scale berechnen
		var scale =  (origGroesse / (origGroesse +abstandVor )) * 100;
		
		par.verticalScale = scale;
		par.horizontalScale = scale;
	} else {
		alert("Bitte Einfügemarke in den Absatz setzen!");
	}
		
	app.activeDocument.viewPreferences.horizontalMeasurementUnits = myOldXUnits;
	app.activeDocument.viewPreferences.verticalMeasurementUnits = myOldYUnits;
	app.scriptPreferences.userInteractionLevel = myOldInteraction;
}