jquery/tag_complete/tag_complete.js

/*
        tag auto-completer written with jquery

        2006-08-18 Dobrica Pavlinusic <dpavlin@rot13.org>
*/

var _tag = {
        name: new Array(),
        obj: new Array(),
        selected_obj: new Array(),

        select: function( tag ) {

                $.log.info('filter '+tag);

                _tag.selected_obj = Array();
                var j = 0;
                var tag_len = tag.length;
                var suggest = '<ul>';

                for(var i = 0; i < _tag.name.length; i++) {
                        var t = _tag.name[i];
                        if ( t.substr(0, tag_len) == tag ) {
                                $.log.debug('selected ['+i+']: ' + t );

                                jQuery.className.add( _tag.obj[i], 'selected' );

                                suggest += '<li>' + t + '</li> ';
                                _tag.selected_obj[j] = _tag.obj[i];
                                j++;
                        }
                }

                suggest += '</ul>';

                $('#suggest').html( suggest );
                if (j > 0) {
                        $('#suggest li:nth(0)').addClass('selected');
                        _tag.current = 0;
                }

        },

        clean_selected: function() {
                for(var i = 0; i < _tag.selected_obj.length; i++) {
                        jQuery.className.remove( _tag.selected_obj[i], 'selected' );
                }

                var c = _tag.current;
                if (c == null) return c;

                $('#suggest').html('');
                _tag.current = null;

                return c;
        },


        take_suggested: function() {
                var c = _tag.current;
                if (c == null) {
                        $.log.debug('no current, return true');
                        return true;
                }

                var s = $('#suggest li:nth('+c+')').html();
                if (s == null) {
                        $.log.debug('no suggest, return true');
                        return true;
                }

                _tag.add_tag( s );
                _tag.clean_selected();
                return false;
        },

        add_tag: function( t ) {
                $.log.info('add: '+t);
                $('#tags').val(
                        $('#tags').val().replace(
                                /[^ ]*$/, t + ' '
                        )
                );
                _tag.focus();
                return false;
        },

        move_suggested: function( where ) {
                var c = _tag.current;
                if (c == null) {
                        $.log.error('_tag.current is null');
                        return;
                }
                var to = c + where;
                $.log.info('move_suggested('+where+') '+c+' -> '+to);
                if (to < 0 || to >= _tag.selected_obj.length) {
                        $.log.error('move to invalid element '+to);
                        return;
                }
                var s = '#suggest li:nth('+c+')';
                $( s ).removeClass('selected');
                $.log.debug('remove selected from '+s);
                s = '#suggest li:nth('+to+')';
                $( s ).addClass('selected');
                $.log.debug('add selected to '+s);
                _tag.current = to;
        },

        last_tag: function() {
                return $('#tags').val().replace(/^([^ ][^ ]* )*/, '');
        },
        focus: function() {
                // $('#tags').focus() doesn't work!
                document.getElementById('tags').focus();
        }

};

$(document).ready( function() {

        $('.tag').each( function(i) {
                var n = this.firstChild.nodeValue;
                _tag.name[i] = n;
                _tag.obj[i] = this;
                this.onclick = function() {
                        return _tag.add_tag( n );
                }
        });
        $.log.info( 'found ' + _tag.name.length + ' tags' );

        $.log.info( 'hook onchange to #tags_form' );
        $('#tags_form').keyup( function(e) {

                $.log.debug('keyup: '+e.keyCode);

                switch (e.keyCode) {
                        case 38:        // up
                                e.preventDefault();
                                _tag.move_suggested( -1 );
                                return false;
                        case 40:        // down
                                e.preventDefault();
                                _tag.move_suggested( +1 );
                                return false;
                        case 9:         // tab
                        case 13:        // return
                                if (_tag.current != null) _tag.focus();
                                e.preventDefault();
                                return false;
                }


                var t = _tag.last_tag();

                $.log.debug('tag: ' + t + ' ['+t.length+']');

                _tag.clean_selected();

                if (t == '') return false;

                _tag.select(t);

                $.log.info('selected ' + _tag.selected_obj.length + ' tags');

                return true;
        }).submit( function() {
                $.log.debug('submit');
                return _tag.take_suggested();
        }).blur( function() {
                $.log.debug('blur');
                return _tag.take_suggested();
        });

        $.log.toggle();

        _tag.focus();
});

1	dpavlin	41	/*
2			tag auto-completer written with jquery
3
4			2006-08-18 Dobrica Pavlinusic <dpavlin@rot13.org>
5			*/
6
7			var _tag = {
8			name: new Array(),
9			obj: new Array(),
10	dpavlin	45	selected_obj: new Array(),
11
12			select: function( tag ) {
13
14			$.log.info('filter '+tag);
15
16			_tag.selected_obj = Array();
17			var j = 0;
18			var tag_len = tag.length;
19			var suggest = '<ul>';
20
21			for(var i = 0; i < _tag.name.length; i++) {
22			var t = _tag.name[i];
23			if ( t.substr(0, tag_len) == tag ) {
24			$.log.debug('selected ['+i+']: ' + t );
25
26			jQuery.className.add( _tag.obj[i], 'selected' );
27
28			suggest += '<li>' + t + '</li> ';
29			_tag.selected_obj[j] = _tag.obj[i];
30			j++;
31			}
32			}
33
34			suggest += '</ul>';
35
36			$('#suggest').html( suggest );
37			if (j > 0) {
38			$('#suggest li:nth(0)').addClass('selected');
39			_tag.current = 0;
40			}
41
42			},
43
44			clean_selected: function() {
45			for(var i = 0; i < _tag.selected_obj.length; i++) {
46			jQuery.className.remove( _tag.selected_obj[i], 'selected' );
47			}
48
49			var c = _tag.current;
50	dpavlin	46	if (c == null) return c;
51	dpavlin	45
52			$('#suggest').html('');
53			_tag.current = null;
54	dpavlin	46
55			return c;
56	dpavlin	45	},
57
58
59			take_suggested: function() {
60	dpavlin	46	var c = _tag.current;
61			if (c == null) {
62			$.log.debug('no current, return true');
63			return true;
64			}
65
66			var s = $('#suggest li:nth('+c+')').html();
67			if (s == null) {
68			$.log.debug('no suggest, return true');
69			return true;
70			}
71
72	dpavlin	48	_tag.add_tag( s );
73			_tag.clean_selected();
74			return false;
75			},
76
77			add_tag: function( t ) {
78			$.log.info('add: '+t);
79	dpavlin	45	$('#tags').val(
80			$('#tags').val().replace(
81	dpavlin	48	/[^ ]*$/, t + ' '
82	dpavlin	45	)
83			);
84	dpavlin	48	_tag.focus();
85	dpavlin	46	return false;
86	dpavlin	45	},
87
88			move_suggested: function( where ) {
89			var c = _tag.current;
90			if (c == null) {
91			$.log.error('_tag.current is null');
92			return;
93			}
94			var to = c + where;
95			$.log.info('move_suggested('+where+') '+c+' -> '+to);
96			if (to < 0 \|\| to >= _tag.selected_obj.length) {
97			$.log.error('move to invalid element '+to);
98			return;
99			}
100			var s = '#suggest li:nth('+c+')';
101			$( s ).removeClass('selected');
102			$.log.debug('remove selected from '+s);
103			s = '#suggest li:nth('+to+')';
104			$( s ).addClass('selected');
105			$.log.debug('add selected to '+s);
106			_tag.current = to;
107			},
108
109			last_tag: function() {
110			return $('#tags').val().replace(/^([^ ][^ ]* )*/, '');
111			},
112			focus: function() {
113			// $('#tags').focus() doesn't work!
114			document.getElementById('tags').focus();
115			}
116
117	dpavlin	41	};
118
119			$(document).ready( function() {
120
121			$('.tag').each( function(i) {
122	dpavlin	48	var n = this.firstChild.nodeValue;
123			_tag.name[i] = n;
124	dpavlin	41	_tag.obj[i] = this;
125	dpavlin	48	this.onclick = function() {
126			return _tag.add_tag( n );
127			}
128	dpavlin	41	});
129			$.log.info( 'found ' + _tag.name.length + ' tags' );
130
131			$.log.info( 'hook onchange to #tags_form' );
132	dpavlin	45	$('#tags_form').keyup( function(e) {
133	dpavlin	41
134	dpavlin	45	$.log.debug('keyup: '+e.keyCode);
135	dpavlin	41
136	dpavlin	45	switch (e.keyCode) {
137			case 38: // up
138			e.preventDefault();
139			_tag.move_suggested( -1 );
140			return false;
141			case 40: // down
142			e.preventDefault();
143			_tag.move_suggested( +1 );
144			return false;
145			case 9: // tab
146			case 13: // return
147	dpavlin	46	if (_tag.current != null) _tag.focus();
148	dpavlin	45	e.preventDefault();
149			return false;
150	dpavlin	41	}
151
152
153	dpavlin	45	var t = _tag.last_tag();
154	dpavlin	41
155	dpavlin	45	$.log.debug('tag: ' + t + ' ['+t.length+']');
156	dpavlin	41
157	dpavlin	45	_tag.clean_selected();
158	dpavlin	41
159	dpavlin	45	if (t == '') return false;
160
161			_tag.select(t);
162
163			$.log.info('selected ' + _tag.selected_obj.length + ' tags');
164
165			return true;
166			}).submit( function() {
167			$.log.debug('submit');
168	dpavlin	46	return _tag.take_suggested();
169	dpavlin	45	}).blur( function() {
170			$.log.debug('blur');
171	dpavlin	46	return _tag.take_suggested();
172	dpavlin	45	});
173	dpavlin	41
174			$.log.toggle();
175
176	dpavlin	45	_tag.focus();
177	dpavlin	41	});
178