// Fireworks JavaScript Command
// Fireworks/Configuration/Commands/

var dom = fw.getDocumentDOM(); // document object

function CreatePatternFromSelection() {
	// require active document
	if (!dom) return false;
	
	// user input
	var input, filename, validFilename = new RegExp('^[^\\\./:\*\?\"<>\|]{1}[^\\/:\*\?\"<>\|]{0,254}$');
	do{
		input = prompt('Enter a name:',input||'');
		filename = fw.appPatternsDir+'/'+input;
	}while(!validate());
	function validate(){
		if(input == null)
			return true;
		if(!validFilename.exec(input))
			return alert('Invalid name! Only use names that are valid filenames.');
		if(Files.exists(filename+'.png'))
			return fw.yesNoDialog('A pattern with this name already exists. Overwrite existing?');
		return true;
	}
	if(input == null)
		return false;
	
	// copy and paste to new document
	dom.clipCopy();
	newDom = fw.createDocument();
	fw.setActiveWindow(newDom);
	dom = fw.getDocumentDOM();
	dom.clipPaste();
	dom.setDocumentCanvasSizeToDocumentExtents(true);
	dom.setDocumentCanvasColor("#ffffff00");
		
	// export pattern to default dir
	dom.exportTo(filename,{
		exportFormat:'PNG',
		colorMode:'32 bit',
		paletteTransparencyType:'rgba'
	});
	
	fw.closeDocument(dom,false);
}

CreatePatternFromSelection();