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 (!this.value.length) {
   7                         row.removeChild(samplecol[0]);
   8                         continue;
   9                 }
  10                 if (samplecol.length) {
  11                         samplecol = samplecol[0];
  12                 }
  13                 else {
  14                         samplecol = row.appendChild(document.createElement('TD'));
  15                         samplecol.className = 'sample';
  16                 }
  17
  18                 // prepare alphabet lookup table
  19                 cols = [ row.cells[0] ];
  20                 for (var col = 1; col <= samplecol.cellIndex; col++) {
  21                         var next = cols[col - 1].nextSibling;
  22                         if (next == samplecol) break;
  23                         cols[col] = next;
  24                         for (var span = 1; span < cols[col].colSpan; span++) {
  25                                 var same = cols[col];
  26                                 cols[++col] = same;
  27                         }
  28                 }
  29                 for (var col = 0; col < cols.length; col++) {
  30                         cols[col] = cols[col].innerHTML.trimRight();
  31                 }
  32
  33                 // copy letters into sample
  34                 var output = '';
  35                 var input = this.value.toUpperCase();
  36                 for (var i = 0; i < input.length; i++) {
  37                         var col = input.charCodeAt(i) - 64;
  38                         if (col < 1) col = 27; // space
  39                         else if (cols[28] && i && col == input.charCodeAt(i - 1) - 64) {
  40                                 col = 28; // repetition char
  41                         }
  42
  43                         if (col < cols.length) {
  44                                 output += '<span>' + (cols[col] || ' ') + '</span>';
  45                         }
  46                         else {
  47                                 output += ' ';
  48                         }
  49                 }
  50                 if (cols[29] && !cols[28]) {
  51                         // circumfix sign if no repetition
  52                         output = cols[29] + output + cols[29];
  53                 }
  54                 samplecol.innerHTML = output;
  55         }
  56 };
  57
  58 function getrequest(name) {
  59         // find GET variable in page request
  60         var match = new RegExp('[?&]'+name+'=([^&]*)');
  61         var param = match.exec(window.location.search);
  62         return param ? decodeURIComponent(param[1]) : '';
  63 }
  64
  65 function prependinput(target) {
  66         var form = document.createElement('FORM');
  67         form.id = 'search';
  68         form.className = 'aside';
  69         form.onsubmit = function () { return false };
  70
  71         var input = document.createElement('INPUT');
  72         input.oninput = appendsample;
  73         input.placeholder = 'Sample';
  74         input.type = 'search';
  75         input.name = 'q';
  76         if (input.value = getrequest('q')) {
  77                 input.oninput();
  78         }
  79
  80         form.appendChild(input);
  81         target.parentNode.insertBefore(form, target);
  82 }
  83