/*
 * Author: Andrew Ingram
 * Email: andy@andrewingram.net
 */

$.localize = true;

if(app.name.indexOf("Photoshop") >= 0)
{
	try {
		mainDialog();
	}
	catch( e ) {
	}
}

function mainDialog() {

	/*
	 * Create the dialog and initial values.  Initial configuration
	 * produces a document with a 64x64 grid with a 3px gutter within
	 * a maximum size of 1024x768
	 */
	var dlg = new Window('dialog', 'GridMaker 2', [100,100,440,290]);

	dlg.okButton = dlg.add('button', [120,160,220,180], 'OK');
	dlg.cancelButton = dlg.add('button', [230,160,330,180], 'Cancel');
	
	dlg.optionsPanel = dlg.add('panel', [10,10,240,150], 'Variables');
	dlg.unitsPanel = dlg.add('panel', [250,10,330,150], 'Units');
	
	dlg.optionsPanel.labelColumnWidth = dlg.optionsPanel.add('statictext', [10,23,111,40], 'Column width');
	dlg.optionsPanel.labelGutterWidth = dlg.optionsPanel.add('statictext', [10,48,111,65], 'Gutter width');
	dlg.optionsPanel.labelColumnWidth = dlg.optionsPanel.add('statictext', [10,73,111,90], 'Number of columns');
	dlg.optionsPanel.labelSubdivisions = dlg.optionsPanel.add('statictext', [10,98,111,115], 'Column Divisions');	
	
	dlg.optionsPanel.inputColumnWidth = dlg.optionsPanel.add('edittext', [120,20,216,40], '100');
	dlg.optionsPanel.inputGutterWidth = dlg.optionsPanel.add('edittext', [120,45,216,65], '10');
	dlg.optionsPanel.inputCount = dlg.optionsPanel.add('edittext', [120,70,216,90], '4');
	dlg.optionsPanel.inputSubdivisions = dlg.optionsPanel.add('edittext', [120,95,216,115], '1');	
	 
	//dlg.optionsPanel.selectOuterGutters = dlg.optionsPanel.add('checkbox', [10,100,216,131] , 'Include outer gutters');
	
	dlg.unitsPanel.selectPixels = dlg.unitsPanel.add('radiobutton', [10,20,111,41], 'pixels');
	dlg.unitsPanel.selectMm = dlg.unitsPanel.add('radiobutton', [10,40,111,61], 'mm');
	dlg.unitsPanel.selectCm = dlg.unitsPanel.add('radiobutton', [10,60,111,81], 'cm');
	dlg.unitsPanel.selectInches = dlg.unitsPanel.add('radiobutton', [10,80,111,101], 'inches');
	
	dlg.unitsPanel.selectPixels.value = true;
	
	/*
	 * okButton Event, performs calculations, generates document and guides, closes dialog.
	 */
	dlg.okButton.onClick = function okClick()
	{
		var pixelsPerInch = 72;
		var inchScale = pixelsPerInch;
		var cmScale = inchScale / 2.54;
		var mmScale = cmScale / 10;
		
		var phi = 1.61803399;
	
		var columnWidth = dlg.optionsPanel.inputColumnWidth.text;
		var gutterWidth = dlg.optionsPanel.inputGutterWidth.text;
		var count = dlg.optionsPanel.inputCount.text;		
		var subdivisions = dlg.optionsPanel.inputSubdivisions.text - 1;
		
		//var selectOuterGutters = dlg.optionsPanel.selectOuterGutters.value;1.61803399
		
		var rowHeight = columnWidth / phi;
		
		var gutterHeight = gutterWidth;
		
		var width = (columnWidth*count)+(gutterWidth*(count-1));
		var height = (rowHeight*count)+(gutterHeight*(count-1));
		
		width = width + (gutterWidth * 2);
		height = height + (gutterHeight * 2);
		
		//width=parseInt(width);
		//height=parseInt(height);
		
		var numberOfGuides=((count*2)-2) + (count*subdivisions);
		var numberOfRowGuides=(count*2)-2;
		
		numberOfGuides=numberOfGuides + 2;
		numberOfRowGuides=numberOfRowGuides + 2;
		
		var guides = new Array();
		var rowGuides = new Array();
		
		rowGuides[0]=gutterHeight;
		rowGuides[1]=rowHeight;
		
		guides[0]=gutterWidth;
			
		for(i=0;i<subdivisions+1;i++)
		{
			guides[i+1]=columnWidth/(subdivisions+1);
		}

		var sum = 0;
		var rowSum = 0;
		
		/*
		 * Calculate the sum of values in the config string
		 */
		for (i=0;i<guides.length;i++)
		{
			guides[i]=guides[i]*1;
			
			if (isNaN(guides[i]))
			{
				alert('Invalid Vertical Config');
				return 0;
			}
			sum=sum+guides[i];
		}
		
		var repeats = (width - guides[0])/sum;

		for (i=0;i<rowGuides.length;i++)
		{
			rowGuides[i]=rowGuides[i]*1;
			
			if (isNaN(rowGuides[i]))
			{
				alert('Invalid Vertical Config');
				return 0;
			}
			rowSum=rowSum+rowGuides[i];
		}
		
		var repeats = (width - guides[0])/sum;
		var rowRepeats = (height - rowGuides[0])/rowSum;

		/*
		 * Create the document based on calculated results, fill with white.
		 */		
	 
		var scale=1;
		 
		if (dlg.unitsPanel.selectPixels.value)
		{
			preferences.rulerUnits = Units.PIXELS;
			scale=1;
		}
		else if (dlg.unitsPanel.selectCm.value)
		{
			preferences.rulerUnits = Units.CM;
			scale = cmScale;
		}
		else if (dlg.unitsPanel.selectMm.value)
		{
			preferences.rulerUnits = Units.MM;
			scale = mmScale;
		}
		else if (dlg.unitsPanel.selectInches.value)
		{
			preferences.rulerUnits = Units.INCHES;
			scale = inchScale;
		}
	 
		var doc = documents.add(width,height,pixelsPerInch,"Gridmaker Document",NewDocumentMode.RGB,DocumentFill.WHITE,1.0);
		
		/*
		 * Place vertical guides
		 */
		for (i=0; i<repeats;i++)
		{
			var x = i*sum;
			
			var y = 0;
		
			for(j=0;j<guides.length;j++)
			{
				makeGuide(parseInt((x+y+guides[j])*scale),"Vrtc");
				y+=guides[j];
			}
		}
		
		makeGuide(0,"Vrtc");		
		makeGuide(parseInt(width*scale),"Vrtc");

		/*
		 * Place horizontal guides
		 */
		for (i=0; i<rowRepeats;i++)
		{
			var x = i*rowSum;
			
			var y = 0;
		
			for(j=0;j<rowGuides.length;j++)
			{
				makeGuide(parseInt((x+y+rowGuides[j])*scale),"Hrzn");
				y+=rowGuides[j];
			}
		}
		
		makeGuide(0,"Hrzn");		
		makeGuide(parseInt(height*scale),"Hrzn");			
		
		/*
		 * Close the dialog window
		 */		
		dlg.close();
	};
	
	/*
	 * cancelButton event, closes the dialog without doing anything
	 */	 
	dlg.cancelButton.onClick = function cancelClick() {
		dlg.close();
	}
	
	/*
	 * finally, we show the dialog. This is where user interaction kicks in
	 */
	dlg.show();
}

/**
 * makeGuide function originally found at:
 * http://blogs.adobe.com/crawlspace/2006/05/installing_and_1.html
 */
function makeGuide(pixelOffSet, orientation) {
    var id8 = charIDToTypeID( "Mk  " );
    var desc4 = new ActionDescriptor();
    var id9 = charIDToTypeID( "Nw  " );
    var desc5 = new ActionDescriptor();
    var id10 = charIDToTypeID( "Pstn" );
    var id11 = charIDToTypeID( "#Rlt" );
    desc5.putUnitDouble( id10, id11, pixelOffSet); // integer
    var id12 = charIDToTypeID( "Ornt" );
    var id13 = charIDToTypeID( "Ornt" );
    var id14 = charIDToTypeID( orientation ); // "Vrtc", "Hrzn"
    desc5.putEnumerated( id12, id13, id14 );
    var id15 = charIDToTypeID( "Gd  " );
    desc4.putObject( id9, id15, desc5 );
  	executeAction( id8, desc4, DialogModes.NO );
}