| 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: new Array(), |
| 11 |
|
| 12 |
current: null, // current selected suggestion |
| 13 |
|
| 14 |
select: function( tag ) { |
| 15 |
|
| 16 |
$.log.info('filter '+tag); |
| 17 |
|
| 18 |
var j = 0; |
| 19 |
var tag_len = tag.length; |
| 20 |
var suggest = ''; |
| 21 |
|
| 22 |
for(var i = 0; i < _tag.name.length; i++) { |
| 23 |
var t = _tag.name[i]; |
| 24 |
if ( t.substr(0, tag_len) == tag ) { |
| 25 |
$.log.debug('selected ['+i+']: ' + t ); |
| 26 |
|
| 27 |
jQuery.className.add( _tag.obj[i], 'selected' ); |
| 28 |
|
| 29 |
suggest += '<a href="#" onclick="javascript:return _tag.add_tag(\'' + t + '\',' + i + ')">' + t + '</a> '; |
| 30 |
_tag.selected[j++] = { |
| 31 |
i: i, |
| 32 |
obj: _tag.obj[i], |
| 33 |
} |
| 34 |
} |
| 35 |
} |
| 36 |
|
| 37 |
$('#suggest').html( suggest ); |
| 38 |
if (j > 0) { |
| 39 |
$('#suggest a:nth(0)').addClass('selected'); |
| 40 |
_tag.current = 0; |
| 41 |
} |
| 42 |
|
| 43 |
}, |
| 44 |
|
| 45 |
clean_selected: function() { |
| 46 |
for(var i = 0; i < _tag.selected.length; i++) { |
| 47 |
jQuery.className.remove( _tag.selected[i].obj, 'selected' ); |
| 48 |
} |
| 49 |
|
| 50 |
var c = _tag.current; |
| 51 |
if (c == null) return c; |
| 52 |
|
| 53 |
$('#suggest').html(''); |
| 54 |
_tag.current = null; |
| 55 |
|
| 56 |
return c; |
| 57 |
}, |
| 58 |
|
| 59 |
|
| 60 |
take_suggested: function() { |
| 61 |
var c = _tag.current; |
| 62 |
if (c == null) { |
| 63 |
$.log.debug('no current, return true'); |
| 64 |
return true; |
| 65 |
} |
| 66 |
|
| 67 |
var s = $('#suggest a:nth('+c+')').html(); |
| 68 |
if (s == null) { |
| 69 |
$.log.debug('no suggest, return true'); |
| 70 |
return true; |
| 71 |
} |
| 72 |
|
| 73 |
var i = _tag.selected[c].i; |
| 74 |
$.log.debug('take_suggested '+i+':'+s); |
| 75 |
_tag.add_tag( s, i ); |
| 76 |
return false; |
| 77 |
}, |
| 78 |
|
| 79 |
add_tag: function( t, i ) { |
| 80 |
$.log.info('add '+i+': '+t); |
| 81 |
_tag.focus(); |
| 82 |
jQuery.className.add( _tag.obj[i], 'entered' ); |
| 83 |
_tag.clean_selected(); |
| 84 |
$('#tags').val( |
| 85 |
$('#tags').val().replace( |
| 86 |
/[^ ]*$/, t + ' ' |
| 87 |
) |
| 88 |
); |
| 89 |
return false; |
| 90 |
}, |
| 91 |
|
| 92 |
move_suggested: function( where ) { |
| 93 |
var c = _tag.current; |
| 94 |
if (c == null) { |
| 95 |
$.log.error('_tag.current is null'); |
| 96 |
return; |
| 97 |
} |
| 98 |
var to = c + where; |
| 99 |
$.log.info('move_suggested('+where+') '+c+' -> '+to); |
| 100 |
if (to < 0 || to >= _tag.selected.length) { |
| 101 |
$.log.error('move to invalid element '+to); |
| 102 |
return; |
| 103 |
} |
| 104 |
var s = '#suggest a:nth('+c+')'; |
| 105 |
$( s ).removeClass('selected'); |
| 106 |
$.log.debug('remove selected from '+s); |
| 107 |
s = '#suggest a:nth('+to+')'; |
| 108 |
$( s ).addClass('selected'); |
| 109 |
$.log.debug('add selected to '+s); |
| 110 |
_tag.current = to; |
| 111 |
}, |
| 112 |
|
| 113 |
last_tag: function() { |
| 114 |
return $('#tags').val().replace(/^([^ ][^ ]* )*/, ''); |
| 115 |
}, |
| 116 |
focus: function() { |
| 117 |
// $('#tags').focus() doesn't work! |
| 118 |
document.getElementById('tags').focus(); |
| 119 |
} |
| 120 |
|
| 121 |
}; |
| 122 |
|
| 123 |
$(document).ready( function() { |
| 124 |
|
| 125 |
$('.tag').each( function(i) { |
| 126 |
var n = this.firstChild.nodeValue; |
| 127 |
_tag.name[i] = n; |
| 128 |
_tag.obj[i] = this; |
| 129 |
this.onclick = function() { |
| 130 |
return _tag.add_tag( n, i ); |
| 131 |
} |
| 132 |
}); |
| 133 |
$.log.info( 'found ' + _tag.name.length + ' tags' ); |
| 134 |
|
| 135 |
$.log.info( 'hook onchange to #tags_form' ); |
| 136 |
$('#tags_form').keyup( function(e) { |
| 137 |
|
| 138 |
$.log.debug('keyup: '+e.keyCode); |
| 139 |
|
| 140 |
switch (e.keyCode) { |
| 141 |
case 38: // up |
| 142 |
e.preventDefault(); |
| 143 |
_tag.move_suggested( -1 ); |
| 144 |
return false; |
| 145 |
case 40: // down |
| 146 |
e.preventDefault(); |
| 147 |
_tag.move_suggested( +1 ); |
| 148 |
return false; |
| 149 |
case 9: // tab |
| 150 |
case 13: // return |
| 151 |
if (_tag.current != null) _tag.focus(); |
| 152 |
e.preventDefault(); |
| 153 |
return false; |
| 154 |
} |
| 155 |
|
| 156 |
|
| 157 |
var t = _tag.last_tag(); |
| 158 |
|
| 159 |
$.log.debug('tag: ' + t + ' ['+t.length+']'); |
| 160 |
|
| 161 |
_tag.clean_selected(); |
| 162 |
|
| 163 |
if (t == '') return false; |
| 164 |
|
| 165 |
_tag.select(t); |
| 166 |
|
| 167 |
$.log.info('selected ' + _tag.selected.length + ' tags'); |
| 168 |
|
| 169 |
return true; |
| 170 |
}).submit( function() { |
| 171 |
$.log.debug('submit'); |
| 172 |
return _tag.take_suggested(); |
| 173 |
}).blur( function() { |
| 174 |
$.log.debug('blur'); |
| 175 |
return _tag.take_suggested(); |
| 176 |
}); |
| 177 |
|
| 178 |
$.log.toggle(); |
| 179 |
|
| 180 |
_tag.focus(); |
| 181 |
}); |
| 182 |
|
Parent Directory
| 
Revision Log