/*
 * 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 null; }

			)();

        },

        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;
				}) ||

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

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

			)();

        }

    };

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

})();