latinsample.js

   1 function appendsample() {
   2         var rows = document.getElementsByClassName('glyphs')[0].rows;
   3         for (var row of rows) {
   4                 // append sample column
   5                 var samplecol = row.getElementsByClassName('sample');
   6                 if (samplecol.length) {
   7                         samplecol = samplecol[0];
   8                 }
   9                 else {
  10                         samplecol = row.appendChild(document.createElement('TD'));
  11                         samplecol.className = 'sample';
  12                 }
  13
  14                 // prepare alphabet lookup table
  15                 cols = [ row.cells[0] ];
  16                 for (var col = 1; col <= samplecol.cellIndex; col++) {
  17                         var next = cols[col - 1].nextSibling;
  18                         if (next == samplecol) break;
  19                         cols[col] = next;
  20                         for (var span = 1; span < cols[col].colSpan; span++) {
  21                                 var same = cols[col];
  22                                 cols[++col] = same;
  23                         }
  24                 }
  25                 for (var col = 0; col < cols.length; col++) {
  26                         cols[col] = cols[col].innerHTML.trimRight();
  27                 }
  28
  29                 // copy letters into sample
  30                 var output = '';
  31                 var input = this.value.toUpperCase();
  32                 for (var i = 0; i < input.length; i++) {
  33                         var col = input.charCodeAt(i) - 64;
  34                         if (col < 1) col = 27; // space
  35                         else if (cols[28] && i && col == input.charCodeAt(i - 1) - 64) {
  36                                 col = 28; // repetition char
  37                         }
  38
  39                         if (col < cols.length) {
  40                                 output += '<span>' + (cols[col] || ' ') + '</span>';
  41                         }
  42                         else {
  43                                 output += ' ';
  44                         }
  45                 }
  46                 if (cols[29] && !cols[28]) {
  47                         // circumfix sign if no repetition
  48                         output = cols[29] + output + cols[29];
  49                 }
  50                 samplecol.innerHTML = output;
  51         }
  52 };
  53
  54 function getrequest(name) {
  55         // find GET variable in page request
  56         var match = new RegExp('[?&]'+name+'=([^&]*)');
  57         var param = match.exec(window.location.search);
  58         return param ? decodeURIComponent(param[1]) : '';
  59 }
  60
  61 function prependinput(target) {
  62         var form = document.createElement('FORM');
  63         form.id = 'search';
  64         form.className = 'aside';
  65         form.onsubmit = function () { return false };
  66
  67         var input = document.createElement('INPUT');
  68         input.oninput = appendsample;
  69         input.placeholder = 'Sample';
  70         input.type = 'search';
  71         input.name = 'q';
  72         if (input.value = getrequest('q')) {
  73                 input.oninput();
  74         }
  75
  76         form.appendChild(input);
  77         target.parentNode.insertBefore(form, target);
  78 }
  79