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;
                }

                $.log.info('take suggestion: '+s);
                $('#tags').val(
                        $('#tags').val().replace(
                                /[^ ]*$/, s + ' '
                        )
                );
                _tag.clean_selected();
                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) {
                _tag.name[i] = this.firstChild.nodeValue;
                _tag.obj[i] = this;
        });
        $.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	/*
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	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	if (c == null) return c;
51
52	$('#suggest').html('');
53	_tag.current = null;
54
55	return c;
56	},
57
58
59	take_suggested: function() {
60	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	$.log.info('take suggestion: '+s);
73	$('#tags').val(
74	$('#tags').val().replace(
75	/[^ ]*$/, s + ' '
76	)
77	);
78	_tag.clean_selected();
79	return false;
80	},
81
82	move_suggested: function( where ) {
83	var c = _tag.current;
84	if (c == null) {
85	$.log.error('_tag.current is null');
86	return;
87	}
88	var to = c + where;
89	$.log.info('move_suggested('+where+') '+c+' -> '+to);
90	if (to < 0 \|\| to >= _tag.selected_obj.length) {
91	$.log.error('move to invalid element '+to);
92	return;
93	}
94	var s = '#suggest li:nth('+c+')';
95	$( s ).removeClass('selected');
96	$.log.debug('remove selected from '+s);
97	s = '#suggest li:nth('+to+')';
98	$( s ).addClass('selected');
99	$.log.debug('add selected to '+s);
100	_tag.current = to;
101	},
102
103	last_tag: function() {
104	return $('#tags').val().replace(/^([^ ][^ ]* )*/, '');
105	},
106	focus: function() {
107	// $('#tags').focus() doesn't work!
108	document.getElementById('tags').focus();
109	}
110
111	};
112
113	$(document).ready( function() {
114
115	$('.tag').each( function(i) {
116	_tag.name[i] = this.firstChild.nodeValue;
117	_tag.obj[i] = this;
118	});
119	$.log.info( 'found ' + _tag.name.length + ' tags' );
120
121	$.log.info( 'hook onchange to #tags_form' );
122	$('#tags_form').keyup( function(e) {
123
124	$.log.debug('keyup: '+e.keyCode);
125
126	switch (e.keyCode) {
127	case 38: // up
128	e.preventDefault();
129	_tag.move_suggested( -1 );
130	return false;
131	case 40: // down
132	e.preventDefault();
133	_tag.move_suggested( +1 );
134	return false;
135	case 9: // tab
136	case 13: // return
137	if (_tag.current != null) _tag.focus();
138	e.preventDefault();
139	return false;
140	}
141
142
143	var t = _tag.last_tag();
144
145	$.log.debug('tag: ' + t + ' ['+t.length+']');
146
147	_tag.clean_selected();
148
149	if (t == '') return false;
150
151	_tag.select(t);
152
153	$.log.info('selected ' + _tag.selected_obj.length + ' tags');
154
155	return true;
156	}).submit( function() {
157	$.log.debug('submit');
158	return _tag.take_suggested();
159	}).blur( function() {
160	$.log.debug('blur');
161	return _tag.take_suggested();
162	});
163
164	$.log.toggle();
165
166	_tag.focus();
167	});
168