https://www.new.mspitalia.it/_lib/lib/js/jquery.fieldSelection.js

1/*
2 * jQuery plugin: fieldSelection - v0.1.1 - last change: 2006-12-16
3 * (c) 2006 Alex Brem <[email protected]> - http://blog.0xab.cd
4 */
5
6(function() {
7
8	var fieldSelection = {
9
10		getSelection: function() {
11
12			var e = (this.jquery) ? this[0] : this;
13
14			return (
15
16				/* mozilla / dom 3.0 */
17				('selectionStart' in e && function() {
18					var l = e.selectionEnd - e.selectionStart;
19					return { start: e.selectionStart, end: e.selectionEnd, length: l, text: e.value.substr(e.selectionStart, l) };
20				}) ||
21
22				/* exploder */
23				(document.selection && function() {
24
25					e.focus();
26
27					var r = document.selection.createRange();
28					if (r === null) {
29						return { start: 0, end: e.value.length, length: 0 }
30					}
31
32					var re = e.createTextRange();
33					var rc = re.duplicate();
34					re.moveToBookmark(r.getBookmark());
35					rc.setEndPoint('EndToStart', re);
36
37					return { start: rc.text.length, end: rc.text.length + r.text.length, length: r.text.length, text: r.text };
38				}) ||
39
40				/* browser not supported */
41				function() { return null; }
42
43			)();
44
45		},
46		
47		setSelection: function(start, end) {
48            var e = document.getElementById($(this).attr('id')); // I don't know why... but $(this) don't want to work today :-/
49            if (!e) {
50                return $(this);
51            } else if (e.setSelectionRange) { /* WebKit */
52                e.focus(); e.setSelectionRange(start, end);
53            } else if (e.createTextRange) { /* IE */
54                var range = e.createTextRange();
55                range.collapse(true);
56                range.moveEnd('character', end);
57                range.moveStart('character', start);
58                range.select();
59            } else if (e.selectionStart) { /* Others */
60                e.selectionStart = start;
61                e.selectionEnd = end;
62            }
63
64            return $(this);
65        },
66
67		replaceSelection: function() {
68
69			var e = (typeof this.id == 'function') ? this.get(0) : this;
70			var text = arguments[0] || '';
71
72			return (
73
74				/* mozilla / dom 3.0 */
75				('selectionStart' in e && function() {
76					e.value = e.value.substr(0, e.selectionStart) + text + e.value.substr(e.selectionEnd, e.value.length);
77					return this;
78				}) ||
79
80				/* exploder */
81				(document.selection && function() {
82					e.focus();
83					document.selection.createRange().text = text;
84					return this;
85				}) ||
86
87				/* browser not supported */
88				function() {
89					e.value += text;
90					return jQuery(e);
91				}
92
93			)();
94
95		}
96
97	};
98
99	jQuery.each(fieldSelection, function(i) { jQuery.fn[i] = this; });
100
101})();