// Copyright 2014 PSF. Licensed under the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
// File originates from the cpython source found in Doc/tools/sphinxext/static/copybutton.js

$(document).ready(function() {
   /* Add a [>>>] button on the top-right corner of code samples to hide
    * the >>> and ... prompts and the output and thus make the code
    * copyable. */
   var div = $('.highlight-python .highlight,' +
               '.highlight-default .highlight,' +
               '.highlight-python3 .highlight')
   var pre = div.find('pre');

   // get the styles from the current theme
   pre.parent().parent().css('position', 'relative');
   var hide_text = 'Hide the prompts and output';
   var show_text = 'Show the prompts and output';
   var border_width = pre.css('border-top-width');
   var border_style = pre.css('border-top-style');
   var border_color = pre.css('border-top-color');
   var button_styles = {
       'cursor':'pointer', 'position': 'absolute', 'top': '0', 'right': '0',
       'border-color': border_color, 'border-style': border_style,
       'border-width': border_width, 'color': border_color, 'text-size': '75%',
       'font-family': 'monospace', 'padding-left': '0.2em', 'padding-right': '0.2em',
       'border-radius': '0 3px 0 0'
   }

   // create and add the button to all the code blocks that contain >>>
   div.each(function(index) {
       var jthis = $(this);
       if (jthis.find('.gp').length > 0) {
           var button = $('<span class="copybutton">&gt;&gt;&gt;</span>');
           button.css(button_styles)
           button.attr('title', hide_text);
           button.data('hidden', 'false');
           jthis.prepend(button);
       }
       // tracebacks (.gt) contain bare text elements that need to be
       // wrapped in a span to work with .nextUntil() (see later)
       jthis.find('pre:has(.gt)').contents().filter(function() {
           return ((this.nodeType == 3) && (this.data.trim().length > 0));
       }).wrap('<span>');
   });

   // define the behavior of the button when it's clicked
   $('.copybutton').click(function(e){
       e.preventDefault();
       var button = $(this);
       if (button.data('hidden') === 'false') {
           // hide the code output
           button.parent().find('.go, .gp, .gt').hide();
           button.next('pre').find('.gt').nextUntil('.gp, .go').css('visibility', 'hidden');
           button.css('text-decoration', 'line-through');
           button.attr('title', show_text);
           button.data('hidden', 'true');
       } else {
           // show the code output
           button.parent().find('.go, .gp, .gt').show();
           button.next('pre').find('.gt').nextUntil('.gp, .go').css('visibility', 'visible');
           button.css('text-decoration', 'none');
           button.attr('title', hide_text);
           button.data('hidden', 'false');
       }
   });
});