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/*
* sidebar.js
* ~~~~~~~~~~
*
* This script makes the Sphinx sidebar collapsible.
*
* .sphinxsidebar contains .sphinxsidebarwrapper. This script adds
* in .sphixsidebar, after .sphinxsidebarwrapper, the #sidebarbutton
* used to collapse and expand the sidebar.
*
* When the sidebar is collapsed the .sphinxsidebarwrapper is hidden
* and the width of the sidebar and the margin-left of the document
* are decreased. When the sidebar is expanded the opposite happens.
* This script saves a per-browser/per-session cookie used to
* remember the position of the sidebar among the pages.
* Once the browser is closed the cookie is deleted and the position
* reset to the default (expanded).
*
* :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
* :license: BSD, see LICENSE for details.
*
*/
$(function() {
// global elements used by the functions.
// the 'sidebarbutton' element is defined as global after its
// creation, in the add_sidebar_button function
var bodywrapper = $('.bodywrapper');
var sidebar = $('.sphinxsidebar');
var sidebarwrapper = $('.sphinxsidebarwrapper');
// for some reason, the document has no sidebar; do not run into errors
if (!sidebar.length) return;
// original margin-left of the bodywrapper and width of the sidebar
// with the sidebar expanded
var bw_margin_expanded = bodywrapper.css('margin-left');
var ssb_width_expanded = sidebar.width();
// margin-left of the bodywrapper and width of the sidebar
// with the sidebar collapsed
var bw_margin_collapsed = '.8em';
var ssb_width_collapsed = '.8em';
// colors used by the current theme
var dark_color = $('.related').css('background-color');
var light_color = $('.document').css('background-color');
function sidebar_is_collapsed() {
return sidebarwrapper.is(':not(:visible)');
}
function toggle_sidebar() {
if (sidebar_is_collapsed())
expand_sidebar();
else
collapse_sidebar();
}
function collapse_sidebar() {
sidebarwrapper.hide();
sidebar.css('width', ssb_width_collapsed);
bodywrapper.css('margin-left', bw_margin_collapsed);
sidebarbutton.css({
'margin-left': '0',
'height': bodywrapper.height()
});
sidebarbutton.find('span').text('»');
sidebarbutton.attr('title', _('Expand sidebar'));
document.cookie = 'sidebar=collapsed';
}
function expand_sidebar() {
bodywrapper.css('margin-left', bw_margin_expanded);
sidebar.css('width', ssb_width_expanded);
sidebarwrapper.show();
sidebarbutton.css({
'margin-left': ssb_width_expanded-12,
'height': bodywrapper.height()
});
sidebarbutton.find('span').text('«');
sidebarbutton.attr('title', _('Collapse sidebar'));
document.cookie = 'sidebar=expanded';
}
function add_sidebar_button() {
sidebarwrapper.css({
'float': 'left',
'margin-right': '0',
'width': ssb_width_expanded - 28
});
// create the button
sidebar.append(
'<div id="sidebarbutton"><span>«</span></div>'
);
var sidebarbutton = $('#sidebarbutton');
light_color = sidebarbutton.css('background-color');
// find the height of the viewport to center the '<<' in the page
var viewport_height;
if (window.innerHeight)
viewport_height = window.innerHeight;
else
viewport_height = $(window).height();
sidebarbutton.find('span').css({
'display': 'block',
'margin-top': (viewport_height - sidebar.position().top - 20) / 2
});
sidebarbutton.click(toggle_sidebar);
sidebarbutton.attr('title', _('Collapse sidebar'));
sidebarbutton.css({
'color': '#FFFFFF',
'border-left': '1px solid ' + dark_color,
'font-size': '1.2em',
'cursor': 'pointer',
'height': bodywrapper.height(),
'padding-top': '1px',
'margin-left': ssb_width_expanded - 12
});
sidebarbutton.hover(
function () {
$(this).css('background-color', dark_color);
},
function () {
$(this).css('background-color', light_color);
}
);
}
function set_position_from_cookie() {
if (!document.cookie)
return;
var items = document.cookie.split(';');
for(var k=0; k<items.length; k++) {
var key_val = items[k].split('=');
var key = key_val[0].replace(/ /, ""); // strip leading spaces
if (key == 'sidebar') {
var value = key_val[1];
if ((value == 'collapsed') && (!sidebar_is_collapsed()))
collapse_sidebar();
else if ((value == 'expanded') && (sidebar_is_collapsed()))
expand_sidebar();
}
}
}
add_sidebar_button();
var sidebarbutton = $('#sidebarbutton');
set_position_from_cookie();
});
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