/*
 * jQuery plugin: fieldSelection - v0.1.0 - last change: 2006-12-16
 * (c) 2006 Alex Brem <alex@0xab.cd> - http://blog.0xab.cd
 */

(function() {

	var fieldSelection = {

		getSelection: function() {

			var e = this.jquery ? this[0] : this;

			return (

				/* mozilla / dom 3.0 */
				('selectionStart' in e && function() {
					var l = e.selectionEnd - e.selectionStart;
					return { start: e.selectionStart, end: e.selectionEnd, length: l, text: e.value.substr(e.selectionStart, l) };
				}) ||

				/* exploder */
				(document.selection && function() {

					e.focus();

					var r = document.selection.createRange();
					if (r == null) {
						return { start: 0, end: e.value.length, length: 0 }
					}

					var re = e.createTextRange();
					var rc = re.duplicate();
					re.moveToBookmark(r.getBookmark());
					rc.setEndPoint('EndToStart', re);

					return { start: rc.text.length, end: rc.text.length + r.text.length, length: r.text.length, text: r.text };
				}) ||

				/* browser not supported */
				function() {
					return { start: 0, end: e.value.length, length: 0 };
				}

			)();

		},

		replaceSelection: function() {

			var e = this.jquery ? this[0] : this;
			var text = arguments[0] || '';

			return (

				/* mozilla / dom 3.0 */
				('selectionStart' in e && function() {
					e.value = e.value.substr(0, e.selectionStart) + text + e.value.substr(e.selectionEnd, e.value.length);
					return this;
				}) ||

				/* exploder */
				(document.selection && function() {
					e.focus();
					document.selection.createRange().text = text;
					return this;
				}) ||

				/* browser not supported */
				function() {
					e.value += text;
					return this;
				}

			)();

		}

	};

	jQuery.each(fieldSelection, function(i) { jQuery.fn[i] = this; });

})();




/*
 * jQuery Caret Range plugin
 * Copyright (c) 2009 Matt Zabriskie
 * Released under the MIT and GPL licenses.
 */
(function($) {
	$.extend($.fn, {
		caret: function (start, end) {
			var elem = this[0];

			if (elem) {							
				// get caret range
				if (typeof start == "undefined") {
					if (elem.selectionStart) {
						start = elem.selectionStart;
						end = elem.selectionEnd;
					}
					else if (document.selection) {
						var val = this.val();
						var range = document.selection.createRange().duplicate();
						range.moveEnd("character", val.length)
						start = (range.text == "" ? val.length : val.lastIndexOf(range.text));

						range = document.selection.createRange().duplicate();
						range.moveStart("character", -val.length);
						end = range.text.length;
					}
				}
				// set caret range
				else {
					var val = this.val();

					if (typeof start != "number") start = -1;
					if (typeof end != "number") end = -1;
					if (start < 0) start = 0;
					if (end > val.length) end = val.length;
					if (end < start) end = start;
					if (start > end) start = end;

					elem.focus();

					if (elem.selectionStart) {
						elem.selectionStart = start;
						elem.selectionEnd = end;
					}
					else if (document.selection) {
						var range = elem.createTextRange();
						range.collapse(true);
						range.moveStart("character", start);
						range.moveEnd("character", end - start);
						range.select();
					}
				}

				return {start:start, end:end};
			}
		}
	});
})(jQuery);