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 |
tag2i: new Array(), |
11 |
selected: new Array(), |
12 |
entered: { // array of entered tags |
13 |
i: new Array(), // offset to tags |
14 |
tag: new Array() // mapping from tag i to entered |
15 |
}, |
16 |
|
17 |
current: null, // current selected suggestion |
18 |
last_tags: '', |
19 |
|
20 |
select: function( tag ) { |
21 |
|
22 |
$.log.info('filter '+tag); |
23 |
|
24 |
var j = 0; |
25 |
var tag_len = tag.length; |
26 |
var suggest = ''; |
27 |
|
28 |
for(var i = 0; i < _tag.name.length; i++) { |
29 |
var t = _tag.name[i]; |
30 |
if ( t.substr(0, tag_len) == tag ) { |
31 |
$.log.debug('selected ['+i+']: ' + t ); |
32 |
|
33 |
jQuery.className.add( _tag.obj[i], 'selected' ); |
34 |
|
35 |
suggest += '<a href="#'+i+'" onclick="javascript:return _tag.tag(\'' + t + '\',' + i + ')">' + t + '</a> '; |
36 |
_tag.selected[j++] = { |
37 |
i: i, |
38 |
obj: _tag.obj[i] |
39 |
} |
40 |
} |
41 |
} |
42 |
|
43 |
$('#suggest').html( suggest ); |
44 |
if (j > 0) { |
45 |
$('#suggest a:nth(0)').addClass('selected'); |
46 |
_tag.current = 0; |
47 |
} |
48 |
|
49 |
}, |
50 |
|
51 |
clean_selected: function() { |
52 |
for(var i = 0; i < _tag.selected.length; i++) { |
53 |
jQuery.className.remove( _tag.selected[i].obj, 'selected' ); |
54 |
} |
55 |
|
56 |
var c = _tag.current; |
57 |
if (c == null) return c; |
58 |
|
59 |
$('#suggest').html(''); |
60 |
_tag.current = null; |
61 |
|
62 |
return c; |
63 |
}, |
64 |
|
65 |
|
66 |
take_suggested: function() { |
67 |
var c = _tag.current; |
68 |
if (c == null) { |
69 |
$.log.debug('no current, return true'); |
70 |
return true; |
71 |
} |
72 |
|
73 |
var s = $('#suggest a:nth('+c+')').html(); |
74 |
if (s == null) { |
75 |
$.log.debug('no suggest, return true'); |
76 |
return true; |
77 |
} |
78 |
|
79 |
var i = _tag.selected[c].i; |
80 |
$.log.debug('take_suggested '+i+':'+s); |
81 |
_tag.add_tag( s, i ); |
82 |
return false; |
83 |
}, |
84 |
|
85 |
add_tag: function( t, i ) { |
86 |
$.log.info('add '+i+': '+t); |
87 |
_tag.focus(); |
88 |
jQuery.className.add( _tag.obj[i], 'entered' ); |
89 |
var entered_i = _tag.entered.i.length; |
90 |
_tag.entered.i[ entered_i ] = i; |
91 |
_tag.entered.tag[i] = entered_i; |
92 |
_tag.clean_selected(); |
93 |
$('#tags').val( |
94 |
$('#tags').val().replace( |
95 |
/[^ ]*$/, t + ' ' |
96 |
) |
97 |
); |
98 |
return false; |
99 |
}, |
100 |
|
101 |
remove_tag: function( t, i ) { |
102 |
$.log.info('remove '+i+': '+t); |
103 |
_tag.focus(); |
104 |
jQuery.className.remove( _tag.obj[i], 'entered' ); |
105 |
// remove selected tag and rebuild tags |
106 |
|
107 |
var ent_i = _tag.entered.tag[i]; |
108 |
$.log.debug('entered i:'+ent_i); |
109 |
_tag.entered.i.splice(ent_i,1); |
110 |
_tag.entered.tag[i] = null; |
111 |
|
112 |
$.log.debug("tags "+_tag.entered.i.join(",")); |
113 |
|
114 |
var tags = ''; |
115 |
for (var j = 0; j < _tag.entered.i.length; j++) { |
116 |
var tag_i = _tag.entered.i[j]; |
117 |
tags += _tag.name[ tag_i ] + ' '; |
118 |
_tag.entered.tag[ tag_i ] = j; |
119 |
} |
120 |
|
121 |
_tag.clean_selected(); |
122 |
$.log.debug('tags left: '+tags); |
123 |
$('#tags').val( tags ); |
124 |
return false; |
125 |
}, |
126 |
|
127 |
tag: function( t, i ) { |
128 |
if (_tag.entered.tag[i] != null) { |
129 |
_tag.remove_tag( t, i ); |
130 |
} else { |
131 |
_tag.add_tag( t, i ); |
132 |
} |
133 |
}, |
134 |
|
135 |
move_suggested: function( where ) { |
136 |
var c = _tag.current; |
137 |
if (c == null) { |
138 |
$.log.error('_tag.current is null'); |
139 |
return; |
140 |
} |
141 |
var to = c + where; |
142 |
$.log.info('move_suggested('+where+') '+c+' -> '+to); |
143 |
if (to < 0 || to >= _tag.selected.length) { |
144 |
$.log.error('move to invalid element '+to); |
145 |
return; |
146 |
} |
147 |
var s = '#suggest a:nth('+c+')'; |
148 |
$( s ).removeClass('selected'); |
149 |
$.log.debug('remove selected from '+s); |
150 |
s = '#suggest a:nth('+to+')'; |
151 |
$( s ).addClass('selected'); |
152 |
$.log.debug('add selected to '+s); |
153 |
_tag.current = to; |
154 |
}, |
155 |
|
156 |
parse: function() { |
157 |
$.log.info('re-parse tags'); |
158 |
|
159 |
var t = $('#tags').val().replace(/^ */,'').replace(/ *$/,'').split(/ /); |
160 |
|
161 |
_tag.entered = { |
162 |
i: new Array(), |
163 |
tag: new Array() |
164 |
}; |
165 |
|
166 |
$('.entered').removeClass('entered'); |
167 |
|
168 |
var ids = ''; |
169 |
for (var i = 0; i < t.length; i++) { |
170 |
var tag = t[i]; |
171 |
if (_tag.tag2i[ tag ] != null) { |
172 |
var tag_i = _tag.tag2i[ tag ]; |
173 |
_tag.entered.tag[ tag ] = |
174 |
_tag.entered.i.push( tag_i ) - 1; |
175 |
jQuery.className.add( _tag.obj[ tag_i ], 'entered' ); |
176 |
ids += i + ':' + tag_i + ' '; |
177 |
} else { |
178 |
ids += i + ':{' + tag + '} '; |
179 |
} |
180 |
} |
181 |
$.log.debug('tags: '+t.join(','), 'ids:'+ids); |
182 |
|
183 |
}, |
184 |
|
185 |
current_tag: function() { |
186 |
var tags = $('#tags').val(); |
187 |
if (tags != _tag.last_tags) { |
188 |
_tag.last_tags = tags; |
189 |
_tag.parse(); |
190 |
} |
191 |
return tags.replace(/^([^ ][^ ]* )*/, ''); |
192 |
}, |
193 |
|
194 |
focus: function() { |
195 |
// $('#tags').focus() doesn't work! |
196 |
document.getElementById('tags').focus(); |
197 |
} |
198 |
|
199 |
}; |
200 |
|
201 |
$(document).ready( function() { |
202 |
|
203 |
$('.tag').each( function(i) { |
204 |
var n = this.firstChild.nodeValue; |
205 |
_tag.name[i] = n; |
206 |
_tag.obj[i] = this; |
207 |
_tag.tag2i[n] = i; |
208 |
this.onclick = function() { |
209 |
return _tag.tag( n, i ); |
210 |
} |
211 |
this.href = '#'+i; // FIXME debug |
212 |
}); |
213 |
$.log.info( 'found ' + _tag.name.length + ' tags' ); |
214 |
|
215 |
$.log.info( 'hook onchange to #tags_form' ); |
216 |
$('#tags_form').keyup( function(e) { |
217 |
|
218 |
$.log.debug('keyup: '+e.keyCode); |
219 |
|
220 |
switch (e.keyCode) { |
221 |
case 38: // up |
222 |
e.preventDefault(); |
223 |
_tag.move_suggested( -1 ); |
224 |
return false; |
225 |
case 40: // down |
226 |
e.preventDefault(); |
227 |
_tag.move_suggested( +1 ); |
228 |
return false; |
229 |
case 9: // tab |
230 |
case 13: // return |
231 |
if (_tag.current != null) _tag.focus(); |
232 |
e.preventDefault(); |
233 |
return false; |
234 |
case 8: // backspace |
235 |
case 46: // del |
236 |
_tag.parse(); |
237 |
return false; |
238 |
} |
239 |
|
240 |
|
241 |
var t = _tag.current_tag(); |
242 |
|
243 |
$.log.debug('tag: ' + t + ' ['+t.length+']'); |
244 |
|
245 |
_tag.clean_selected(); |
246 |
|
247 |
if (t == '') return false; |
248 |
|
249 |
_tag.select(t); |
250 |
|
251 |
$.log.info('selected ' + _tag.selected.length + ' tags'); |
252 |
|
253 |
return true; |
254 |
}).submit( function() { |
255 |
$.log.debug('submit'); |
256 |
return _tag.take_suggested(); |
257 |
}).blur( function() { |
258 |
$.log.debug('blur'); |
259 |
return _tag.take_suggested(); |
260 |
}); |
261 |
|
262 |
$.log.toggle(); |
263 |
|
264 |
_tag.focus(); |
265 |
}); |
266 |
|