searchlocal.js

   1 function filtercell(el, set, action) {
   2         switch (action) {
   3                 case 'focus':
   4                         el.classList[set ? 'add' : 'remove'](action);
   5                         break;
   6                 case 'target':
   7                         if (set) el.classList.toggle(action);
   8                         break;
   9                 case 'remove':
  10                         if (set) el.style.display = 'none';
  11                         break;
  12                 case 'add':
  13                         if (set) el.style.display = '';
  14                         break;
  15                 case 'toggle':
  16                         if (set) el.style.display = el.style.display == 'none' ? '' : 'none';
  17                         break;
  18                 case 'filter':
  19                         el.style.display = set ? '' : 'none';
  20                         if (!Element.prototype.hasOwnProperty('classList')) return;
  21                         // continue
  22                 default: // reset
  23                         el.classList.remove('focus');
  24                         el.classList.remove('target');
  25         }
  26 }
  27
  28 function filterrows(table, match, action) {
  29         var rows = table.tBodies[0].rows;
  30         for (var i = 0; i < rows.length; i++) {
  31                 filtercell(rows[i], match(rows[i]), action);
  32         }
  33 }
  34
  35 function filtertable(query, action) {
  36         var table = document.getElementsByTagName('TABLE')[0];
  37
  38         if (!action) {
  39                 var match = /^([-+?=]?)(.*)/.exec(query);
  40                 switch (match[1]) {
  41                         case '+': action = 'add';    break;
  42                         case '-': action = 'remove'; break;
  43                         case '?': action = 'toggle'; break;
  44                         case '=': action = 'filter'; break;
  45                 }
  46                 query = match[2];
  47         }
  48
  49         if (/^[A-Z0-9 ]{2,}$/.test(query)) {
  50                 // category title if all uppercase
  51                 var match = function(row) {
  52                         return row.cells[0].title.match(query, 'i');
  53                 };
  54         }
  55         else {
  56                 // title text (case-insensitive unless caps in input)
  57                 var match = function(row) {
  58                         return row.cells[1].textContent.match(query, /[A-Z]/.test(query) ? '' : 'i');
  59                 };
  60         }
  61         filterrows(table, match, action || 'filter');
  62 }
  63
  64 function newelement(tagname, attrlist, childlist) {
  65         if (!attrlist) return document.createTextNode(tagname);
  66         var el = document.createElement(tagname);
  67         for (var name in attrlist)
  68                 el.setAttribute(name, attrlist[name]);
  69         if (childlist) for (var i = 0; i < childlist.length; i++)
  70                 el.appendChild(childlist[i]);
  71         return el;
  72 }
  73
  74 function prependsearch(target) {
  75         target.parentNode.insertBefore(newelement(
  76                 'form', {
  77                         id: 'search',
  78                         'class': 'aside',
  79                         onsubmit: "filtertable(this.q.value); this.q.value = ''; return false",
  80                 },
  81                 [
  82                         newelement('input', {
  83                                 type: 'search',
  84                                 name: 'q',
  85                                 onkeyup: "filtertable(this.value, this.value.length > 1 ? 'focus' : 'reset')",
  86                         }),
  87                         newelement('input', {
  88                                 type: 'button',
  89                                 value: 'toggle',
  90                                 onclick: "filtertable(this.form.q.value, 'target')",
  91                         }),
  92                         newelement('input', {type:'submit', value:'filter'}),
  93                 ]
  94         ), target);
  95 }
  96