docs/_build/html/_static/sidebar.js

   1 /*
   2  * sidebar.js
   3  * ~~~~~~~~~~
   4  *
   5  * This script makes the Sphinx sidebar collapsible.
   6  *
   7  * .sphinxsidebar contains .sphinxsidebarwrapper.  This script adds
   8  * in .sphixsidebar, after .sphinxsidebarwrapper, the #sidebarbutton
   9  * used to collapse and expand the sidebar.
  10  *
  11  * When the sidebar is collapsed the .sphinxsidebarwrapper is hidden
  12  * and the width of the sidebar and the margin-left of the document
  13  * are decreased. When the sidebar is expanded the opposite happens.
  14  * This script saves a per-browser/per-session cookie used to
  15  * remember the position of the sidebar among the pages.
  16  * Once the browser is closed the cookie is deleted and the position
  17  * reset to the default (expanded).
  18  *
  19  * :copyright: Copyright 2007-2014 by the Sphinx team, see AUTHORS.
  20  * :license: BSD, see LICENSE for details.
  21  *
  22  */
  23
  24 $(function() {
  25
  26
  27
  28
  29
  30
  31
  32
  33   // global elements used by the functions.
  34   // the 'sidebarbutton' element is defined as global after its
  35   // creation, in the add_sidebar_button function
  36   var bodywrapper = $('.bodywrapper');
  37   var sidebar = $('.sphinxsidebar');
  38   var sidebarwrapper = $('.sphinxsidebarwrapper');
  39
  40   // for some reason, the document has no sidebar; do not run into errors
  41   if (!sidebar.length) return;
  42
  43   // original margin-left of the bodywrapper and width of the sidebar
  44   // with the sidebar expanded
  45   var bw_margin_expanded = bodywrapper.css('margin-left');
  46   var ssb_width_expanded = sidebar.width();
  47
  48   // margin-left of the bodywrapper and width of the sidebar
  49   // with the sidebar collapsed
  50   var bw_margin_collapsed = '.8em';
  51   var ssb_width_collapsed = '.8em';
  52
  53   // colors used by the current theme
  54   var dark_color = $('.related').css('background-color');
  55   var light_color = $('.document').css('background-color');
  56
  57   function sidebar_is_collapsed() {
  58     return sidebarwrapper.is(':not(:visible)');
  59   }
  60
  61   function toggle_sidebar() {
  62     if (sidebar_is_collapsed())
  63       expand_sidebar();
  64     else
  65       collapse_sidebar();
  66   }
  67
  68   function collapse_sidebar() {
  69     sidebarwrapper.hide();
  70     sidebar.css('width', ssb_width_collapsed);
  71     bodywrapper.css('margin-left', bw_margin_collapsed);
  72     sidebarbutton.css({
  73         'margin-left': '0',
  74         'height': bodywrapper.height()
  75     });
  76     sidebarbutton.find('span').text('»');
  77     sidebarbutton.attr('title', _('Expand sidebar'));
  78     document.cookie = 'sidebar=collapsed';
  79   }
  80
  81   function expand_sidebar() {
  82     bodywrapper.css('margin-left', bw_margin_expanded);
  83     sidebar.css('width', ssb_width_expanded);
  84     sidebarwrapper.show();
  85     sidebarbutton.css({
  86         'margin-left': ssb_width_expanded-12,
  87         'height': bodywrapper.height()
  88     });
  89     sidebarbutton.find('span').text('«');
  90     sidebarbutton.attr('title', _('Collapse sidebar'));
  91     document.cookie = 'sidebar=expanded';
  92   }
  93
  94   function add_sidebar_button() {
  95     sidebarwrapper.css({
  96         'float': 'left',
  97         'margin-right': '0',
  98         'width': ssb_width_expanded - 28
  99     });
 100     // create the button
 101     sidebar.append(
 102         '<div id="sidebarbutton"><span>&laquo;</span></div>'
 103     );
 104     var sidebarbutton = $('#sidebarbutton');
 105     light_color = sidebarbutton.css('background-color');
 106     // find the height of the viewport to center the '<<' in the page
 107     var viewport_height;
 108     if (window.innerHeight)
 109           viewport_height = window.innerHeight;
 110     else
 111           viewport_height = $(window).height();
 112     sidebarbutton.find('span').css({
 113         'display': 'block',
 114         'margin-top': (viewport_height - sidebar.position().top - 20) / 2
 115     });
 116
 117     sidebarbutton.click(toggle_sidebar);
 118     sidebarbutton.attr('title', _('Collapse sidebar'));
 119     sidebarbutton.css({
 120         'color': '#FFFFFF',
 121         'border-left': '1px solid ' + dark_color,
 122         'font-size': '1.2em',
 123         'cursor': 'pointer',
 124         'height': bodywrapper.height(),
 125         'padding-top': '1px',
 126         'margin-left': ssb_width_expanded - 12
 127     });
 128
 129     sidebarbutton.hover(
 130       function () {
 131           $(this).css('background-color', dark_color);
 132       },
 133       function () {
 134           $(this).css('background-color', light_color);
 135       }
 136     );
 137   }
 138
 139   function set_position_from_cookie() {
 140     if (!document.cookie)
 141       return;
 142     var items = document.cookie.split(';');
 143     for(var k=0; k<items.length; k++) {
 144       var key_val = items[k].split('=');
 145       var key = key_val[0].replace(/ /, "");  // strip leading spaces
 146       if (key == 'sidebar') {
 147         var value = key_val[1];
 148         if ((value == 'collapsed') && (!sidebar_is_collapsed()))
 149           collapse_sidebar();
 150         else if ((value == 'expanded') && (sidebar_is_collapsed()))
 151           expand_sidebar();
 152       }
 153     }
 154   }
 155
 156   add_sidebar_button();
 157   var sidebarbutton = $('#sidebarbutton');
 158   set_position_from_cookie();
 159 });