mediawiki-skins-Vector/components/tabs.less
Bartosz Dziewoński d82e4db35e Make dropdown menus keyboard-accessible without JavaScript
Instead of implementing keyboard (and mouse click) handling in
JavaScript, put an invisible <input type="checkbox"> into the
dropdown handle. It can be focused and toggled using keyboard
actions like a normal checkbox. This checkbox also takes over
the duties of handling mouse hovering and clicking.

Old JavaScript and CSS are left in place for compatibility with
cached page HTML, to be removed later in a follow-up.

Bug: T168080
Change-Id: I27532140b06c97921f1cfb64e44bff814d99a358
2018-01-03 21:58:51 +00:00

302 lines
6.2 KiB
Plaintext

/**
* Styling for namespace tabs (page, discussion) and views (read, edit, view history, watch and other actions)
*/
/* Navigation Labels */
div.vectorTabs h3 {
display: none;
}
/* Namespaces and Views */
div.vectorTabs {
float: left;
height: 2.5em;
.background-image('images/tab-break.png');
background-position: bottom left;
background-repeat: no-repeat;
padding-left: 1px;
ul {
float: left;
height: 100%;
list-style-type: none;
list-style-image: none;
margin: 0;
padding: 0;
.background-image('images/tab-break.png');
background-position: right bottom;
background-repeat: no-repeat;
li {
float: left;
line-height: 1.125em;
/* For IE6, overridden later to display:block by modern browsers */
display: inline-block;
height: 100%;
margin: 0;
padding: 0;
.background-image('images/tab-normal-fade.png');
background-position: bottom left;
background-repeat: repeat-x;
white-space: nowrap;
}
/* IGNORED BY IE6 which doesn't support child selector */
> li {
display: block;
}
}
li {
&.new {
a,
a:visited {
color: #a55858;
}
}
&.selected {
.background-image('images/tab-current-fade.png');
a,
a:visited {
color: #222;
text-decoration: none;
}
}
&.icon {
a {
background-position: bottom right;
background-repeat: no-repeat;
}
}
a {
/* For IE6, overridden later to display:block by modern browsers */
display: inline-block;
height: 1.9em;
padding-left: 0.625em; // equals `8px` at computed `font-size` of `12.8px`
padding-right: 0.625em;
color: @menu-link-color;
cursor: pointer;
font-size: 0.8em;
}
/* Ignored by IE6 which doesn't support child selector */
> a {
display: block;
}
}
span {
display: inline-block;
.background-image('images/tab-break.png');
background-position: bottom right;
background-repeat: no-repeat;
height: 100%;
a {
/* For IE6, overridden later to display:block by modern browsers */
display: inline-block;
padding-top: 1.25em;
}
/* Ignored by IE6 which doesn't support child selector */
> a {
float: left;
display: block;
}
}
}
/* Variants and Actions */
div.vectorMenu {
direction: ltr;
float: left;
cursor: pointer;
position: relative;
line-height: 1.125em;
}
div#mw-head div.vectorMenu h3 {
float: left;
.background-image('images/tab-break.png');
background-repeat: no-repeat;
background-position: bottom right;
font-size: 1em;
height: 2.5em;
// `padding-right` >= `1px` effectively moves the "background border" outside of the element to act like a real
// border. It is necessary for `div.vectorMenu div.menu` dropdown to align well.
padding-right: 0.5em; // equals `8px` at computed `font-size` of `14px` as visually harmonically with `padding-left` in `div.vectorMenu h3 span`
margin-right: -1px;
}
div.vectorMenu h3 {
span {
position: relative;
display: block;
font-size: 0.8em;
padding-left: 0.625em;
padding-top: 1.25em;
padding-right: 16px;
font-weight: normal;
color: #444;
&:after {
content: '';
position: absolute;
top: 1.25em;
right: 0;
bottom: 0;
left: 0;
.background-image-svg('images/arrow-down.svg', 'images/arrow-down.png');
background-position: 100% 50%;
background-repeat: no-repeat;
// Modify the color of the image from the default #222 to approx. #444 to match the text.
opacity: 0.85;
}
}
&:hover span,
&:focus span {
color: @content-font-color;
&:after {
opacity: 1;
}
}
}
div.vectorMenu .vectorMenuCheckbox:checked + h3 span:after,
div.vectorMenu.menuForceShow h3 span:after {
transform: scaleY( -1 );
}
div.vectorMenu .vectorMenuCheckbox:focus + h3 {
// Simulate browser focus ring
outline: dotted 1px; // Firefox style
outline: auto -webkit-focus-ring-color; // Webkit style
}
div.vectorMenu div.menu {
// Match the width of the dropdown "heading" (the tab)
min-width: 100%;
position: absolute;
top: 2.5em;
left: -1px;
background-color: @body-background-color;
border: 1px solid #a2a9b1;
border-top-width: 0;
clear: both;
box-shadow: 0 1px 1px 0 rgba( 0, 0, 0, 0.1 );
text-align: left;
display: none;
// Menus must overlap indicators (z-index: 1) and VisualEditor toolbar (z-index: 2)
z-index: 2;
}
div.vectorMenu:hover div.menu,
div.vectorMenu.menuForceShow div.menu {
display: block;
}
// This is in a separate block, so that browsers supporting :hover but not :checked still apply the rule above
// Support: IE8
div.vectorMenu .vectorMenuCheckbox:checked ~ div.menu {
display: block;
}
div.vectorMenu ul {
list-style-type: none;
list-style-image: none;
padding: 0;
margin: 0;
text-align: left;
}
// stylelint-disable selector-no-vendor-prefix, selector-type-no-unknown
/* Fixes old versions of FireFox */
div.vectorMenu ul,
x:-moz-any-link {
min-width: 5em;
}
/* Returns things back to normal in modern versions of FireFox */
div.vectorMenu ul,
x:-moz-any-link,
x:default {
min-width: 0;
}
// stylelint-enable selector-no-vendor-prefix, selector-type-no-unknown
div.vectorMenu li {
padding: 0;
margin: 0;
text-align: left;
line-height: 1em;
}
/* OVERRIDDEN BY COMPLIANT BROWSERS */
div.vectorMenu li a {
display: inline-block;
padding: 0.625em;
white-space: nowrap;
color: @menu-link-color;
cursor: pointer;
font-size: 0.8em;
}
/* IGNORED BY IE6 */
div.vectorMenu li > a {
display: block;
}
div.vectorMenu li.selected a,
div.vectorMenu li.selected a:visited {
color: #222;
text-decoration: none;
}
// Invisible checkbox covering the dropdown menu handle
.vectorMenuCheckbox {
cursor: pointer;
position: absolute;
top: 0;
left: 0;
z-index: 1;
opacity: 0;
width: 100%;
height: 100%;
margin: 0;
padding: 0;
// Hide the checkbox completely in browsers that don't support :checked
display: none;
}
:not( :checked ) > .vectorMenuCheckbox {
// When the browser supports :checked, display it
display: block;
}
// Expand vectorMenu as basic tabs in IE6
// (IE6 doesn't support :hover on DIV)
* html div.vectorMenu div.menu {
display: block;
position: static;
border: 0;
}
* html div#mw-head div.vectorMenu h3 {
display: none;
}
* html div.vectorMenu li {
float: left;
line-height: 1.125em;
border-right: 1px solid #a7d7f9;
}
* html div.vectorMenu li a {
padding-top: 1.25em;
}
@import 'watchstar.less';