remove empty space in short version for code blocks

Author: ogogorev

_theme/tarantool/static/js/copy-button.js

@@ -25,6 +25,31 @@ $(document).ready(function() {
  div.each(function(index) {
  var jthis = $(this);
  if (jthis.find('.gp').length > 0) {
+ // add copy-pasteable version
+ jthis.find("pre").addClass('full');
+ var shortVersion = jthis.find("pre").clone();
+ shortVersion.find('.p-Indicator').nextUntil('.nn').remove();
+ shortVersion.find('.go, .gp, .gt, .nn, .c1, .no, .p-Indicator').remove();
+ shortVersion.find('.gt').nextUntil('.gp, .go').remove();
+ shortVersion.removeClass("full");
+ shortVersion.addClass("short");
+ shortVersion.hide();
+
+ shortVersion.find('span').each(function(i, v) {
+ if ($(v).text() === '') $(v).remove();
+ });
+
+ var html = shortVersion.html();
+ html = html.split('\n').map(function(v) {
+ if (/^\s*<span/.test(v)) return v;
+ else return v.trim();
+ }).filter(function(v) {
+ return v != '';
+ }).join('\n');
+ shortVersion.html(html);
+ jthis.prepend(shortVersion);
+
+ //add button
  var button = $('<span class="copybutton">&gt;&gt;&gt;</span>');
  button.css(button_styles)
  button.attr('title', hide_text);
@@ -44,17 +69,15 @@ $(document).ready(function() {
  var button = $(this);
  if (button.data('hidden') === 'false') {
  // hide the code output
- button.next('pre').find('.p-Indicator').nextUntil('.nn').css('visibility', 'hidden');
- button.parent().find('.go, .gp, .gt, .nn, .c1, .no, .p-Indicator').hide();
- button.next('pre').find('.gt').nextUntil('.gp, .go').css('visibility', 'hidden');
+ button.parent().find('.full').hide();
+ button.parent().find('.short').show();
  button.css('text-decoration', 'line-through');
  button.attr('title', show_text);
  button.data('hidden', 'true');
  } else {
  // show the code output
- button.next('pre').find('.p-Indicator').nextUntil('.nn').css('visibility', 'visible');
- button.parent().find('.go, .gp, .gt, .nn, .c1, .no, .p-Indicator').show();
- button.next('pre').find('.gt').nextUntil('.gp, .go').css('visibility', 'visible');
+ button.parent().find('.full').show();
+ button.parent().find('.short').hide();
  button.css('text-decoration', 'none');
  button.attr('title', hide_text);
  button.data('hidden', 'false');