// Fireworks JavaScript Command
// Copy to Fireworks/Configuration/Commands/
// 2007 Aaron Beall - http://fireworks.abeall.com
// Version 1.0
// Requires CS3+

var dom = fw.getDocumentDOM();
var sel = [].concat(fw.selection);

function ChangeCase(textCase){
	if(!dom) return;
	
	var texts = [];
	for(var s in sel){
		if(sel[s] == "[object Text]")
			texts.push(sel[s]);
	}
	
	if(!texts.length)
		return alert("Please select at least one text box or some text.");
	
	if(texts.length > 1){
		for(var t in texts)
			setTextChars(texts[t],texts[t].textChars[textCase]());
	}else{
		var selIndex = fw.textInsertionIndex;
		var selLength = fw.textInsertionLength;
		
		if(selIndex == -1){
			setTextChars(texts[0],texts[0].textChars[textCase]());
		}else{
			if(selLength == 0)
				return alert("Select some text, or select the entire text box.");
			var chars = texts[0].textChars;
			setTextChars( texts[0],chars.substring(0,selIndex) + chars.substring(selIndex,selIndex+selLength)[textCase]() + chars.substring(selIndex+selLength,chars.length) );
		}
	}
	
	// replace the characters in a text box while preserving textRuns
	function setTextChars(text,txt){
		//text.textChars = txt; // almost so easy! but it breaks undo
		//dom.changeCurrentPage(dom.currentPageNum); // hack to force refresh the screen, because changing textChars doesn't refresh the screen
		var runs = text.textRuns, run, charCount = 0;
		for(var i=0; i<runs.textRuns.length; i++){
			run = runs.textRuns[i];
			run.characters = txt.substr(charCount,run.characters.length);
			charCount += run.characters.length;
		}
		text.textRuns = runs;
	}
}
ChangeCase("toLowerCase");