//$(document).on('input', 'textarea' ,function(){adjustTextArea(this);});
$(document).on('input', 'textarea' ,function(){ var that = this; setTimeout(function(e) {adjustTextArea(that); }, 0);});
//$(document).on('paste', 'textarea' ,function(){setTimeout(function(e) {adjustTextArea(this); }, 0);});
var minLineHeight = 20;
var lock = false; var debug = false;
function resizeLoop(area){
	var tb=$(area);
	var inputGroup = $(area).siblings('.input-group-btn').find('.btn');
	var target = area.scrollHeight; //+ lineHeightOffset //+parseFloat(tb.css('borderTopWidth'))+parseFloat(tb.css('borderBottomWidth'));
	var current = tb.outerHeight();
	if(current>0 && current<target && !lock){
		lock = true;
		if(debug) console.log("resizing from " + current + "...");
		var goTo = tb.height()+minLineHeight;
		tb.height(goTo); //jQuery async causes this to fall over
		$(inputGroup).height(goTo);
		setTimeout(resizeLoop(area), 250);
		if(debug) console.log("...to " + current);
		lock = false;
	} else if(debug) console.log("skipping.");
}
function adjustTextArea(area){
	var tb=$(area);
	var lineHeightOffset = parseFloat(tb.css('borderTopWidth'))+parseFloat(tb.css('borderBottomWidth'))+parseFloat(tb.css('paddingBottom'))+parseFloat(tb.css('paddingTop'));
	var baseLine = minLineHeight + lineHeightOffset;
	
	if(tb.outerHeight()>area.scrollHeight && tb.height() < baseLine){
		if(debug) console.log("resetting baseline from " + tb.height());
		tb.height(baseLine);
		}
	
	resizeLoop(area);
}
function WireUpAdjustTextArea(){$('textarea').each(function(){adjustTextArea(this);});}