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/* |
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tag auto-completer written with jquery |
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|
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2006-08-18 Dobrica Pavlinusic <dpavlin@rot13.org> |
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*/ |
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|
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var _tag = { |
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name: new Array(), |
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obj: new Array(), |
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selected: new Array(), |
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entered: { // array of entered tags |
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i: new Array(), // offset to tags |
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tag: new Array() // mapping from tag i to entered |
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}, |
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|
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current: null, // current selected suggestion |
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|
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select: function( tag ) { |
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|
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$.log.info('filter '+tag); |
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|
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var j = 0; |
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var tag_len = tag.length; |
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var suggest = ''; |
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|
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for(var i = 0; i < _tag.name.length; i++) { |
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var t = _tag.name[i]; |
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if ( t.substr(0, tag_len) == tag ) { |
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$.log.debug('selected ['+i+']: ' + t ); |
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|
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jQuery.className.add( _tag.obj[i], 'selected' ); |
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|
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suggest += '<a href="#'+i+'" onclick="javascript:return _tag.tag(\'' + t + '\',' + i + ')">' + t + '</a> '; |
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_tag.selected[j++] = { |
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i: i, |
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obj: _tag.obj[i] |
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} |
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} |
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} |
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|
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$('#suggest').html( suggest ); |
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if (j > 0) { |
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$('#suggest a:nth(0)').addClass('selected'); |
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_tag.current = 0; |
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} |
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|
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}, |
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|
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clean_selected: function() { |
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for(var i = 0; i < _tag.selected.length; i++) { |
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jQuery.className.remove( _tag.selected[i].obj, 'selected' ); |
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} |
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|
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var c = _tag.current; |
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if (c == null) return c; |
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|
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$('#suggest').html(''); |
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_tag.current = null; |
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|
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return c; |
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}, |
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|
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|
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take_suggested: function() { |
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var c = _tag.current; |
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if (c == null) { |
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$.log.debug('no current, return true'); |
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return true; |
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} |
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|
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var s = $('#suggest a:nth('+c+')').html(); |
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if (s == null) { |
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$.log.debug('no suggest, return true'); |
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return true; |
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} |
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|
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var i = _tag.selected[c].i; |
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$.log.debug('take_suggested '+i+':'+s); |
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_tag.add_tag( s, i ); |
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return false; |
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}, |
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|
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add_tag: function( t, i ) { |
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$.log.info('add '+i+': '+t); |
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_tag.focus(); |
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jQuery.className.add( _tag.obj[i], 'entered' ); |
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var entered_i = _tag.entered.i.length; |
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_tag.entered.i[ entered_i ] = i; |
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_tag.entered.tag[i] = entered_i; |
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_tag.clean_selected(); |
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$('#tags').val( |
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$('#tags').val().replace( |
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/[^ ]*$/, t + ' ' |
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) |
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); |
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return false; |
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}, |
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|
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remove_tag: function( t, i ) { |
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$.log.info('remove '+i+': '+t); |
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_tag.focus(); |
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jQuery.className.remove( _tag.obj[i], 'entered' ); |
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// remove selected tag and rebuild tags |
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|
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var ent_i = _tag.entered.tag[i]; |
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$.log.debug('entered i:'+ent_i); |
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_tag.entered.i.splice(ent_i,1); |
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_tag.entered.tag[i] = null; |
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|
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$.log.debug("tags "+_tag.entered.i.join(",")); |
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|
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var tags = ''; |
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for (var j = 0; j < _tag.entered.i.length; j++) { |
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var tag_i = _tag.entered.i[j]; |
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tags += _tag.name[ tag_i ] + ' '; |
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_tag.entered.tag[ tag_i ] = j; |
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} |
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|
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_tag.clean_selected(); |
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$.log.debug('tags left: '+tags); |
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$('#tags').val( tags ); |
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return false; |
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}, |
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|
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tag: function( t, i ) { |
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if (_tag.entered.tag[i] != null) { |
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_tag.remove_tag( t, i ); |
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} else { |
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_tag.add_tag( t, i ); |
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} |
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}, |
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|
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move_suggested: function( where ) { |
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var c = _tag.current; |
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if (c == null) { |
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$.log.error('_tag.current is null'); |
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return; |
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} |
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var to = c + where; |
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$.log.info('move_suggested('+where+') '+c+' -> '+to); |
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if (to < 0 || to >= _tag.selected.length) { |
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$.log.error('move to invalid element '+to); |
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return; |
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} |
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var s = '#suggest a:nth('+c+')'; |
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$( s ).removeClass('selected'); |
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$.log.debug('remove selected from '+s); |
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s = '#suggest a:nth('+to+')'; |
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$( s ).addClass('selected'); |
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$.log.debug('add selected to '+s); |
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_tag.current = to; |
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}, |
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|
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last_tag: function() { |
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return $('#tags').val().replace(/^([^ ][^ ]* )*/, ''); |
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}, |
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focus: function() { |
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// $('#tags').focus() doesn't work! |
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document.getElementById('tags').focus(); |
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} |
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|
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}; |
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|
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$(document).ready( function() { |
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|
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$('.tag').each( function(i) { |
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var n = this.firstChild.nodeValue; |
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_tag.name[i] = n; |
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_tag.obj[i] = this; |
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this.onclick = function() { |
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return _tag.tag( n, i ); |
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} |
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this.href = '#'+i; // FIXME debug |
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}); |
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$.log.info( 'found ' + _tag.name.length + ' tags' ); |
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|
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$.log.info( 'hook onchange to #tags_form' ); |
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$('#tags_form').keyup( function(e) { |
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|
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$.log.debug('keyup: '+e.keyCode); |
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|
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switch (e.keyCode) { |
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case 38: // up |
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e.preventDefault(); |
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_tag.move_suggested( -1 ); |
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return false; |
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case 40: // down |
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e.preventDefault(); |
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_tag.move_suggested( +1 ); |
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return false; |
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case 9: // tab |
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case 13: // return |
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if (_tag.current != null) _tag.focus(); |
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e.preventDefault(); |
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return false; |
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} |
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|
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|
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var t = _tag.last_tag(); |
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|
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$.log.debug('tag: ' + t + ' ['+t.length+']'); |
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|
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_tag.clean_selected(); |
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|
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if (t == '') return false; |
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|
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_tag.select(t); |
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|
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$.log.info('selected ' + _tag.selected.length + ' tags'); |
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|
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return true; |
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}).submit( function() { |
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$.log.debug('submit'); |
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return _tag.take_suggested(); |
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}).blur( function() { |
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$.log.debug('blur'); |
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return _tag.take_suggested(); |
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}); |
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|
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$.log.toggle(); |
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|
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_tag.focus(); |
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}); |
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