mediawiki-skins-Vector/vector.js

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/**
* Vector-specific scripts
*/
jQuery( function ( $ ) {
/**
* Collapsible tabs
*/
var $cactions = $( '#p-cactions' ),
$tabContainer = $( '#p-views ul' ),
rAF = window.requestAnimationFrame || setTimeout,
// Avoid forced style calculation during page load
initialCactionsWidth = function () {
var width = $cactions.width();
initialCactionsWidth = function () {
return width;
};
return width;
};
rAF( initialCactionsWidth );
/**
* Focus search input at the very end
*/
$( '#searchInput' ).attr( 'tabindex', $( document ).lastTabIndex() + 1 );
/**
* Dropdown menu accessibility
*/
$( 'div.vectorMenu' ).each( function () {
var $el = $( this );
$el.find( '> h3 > a' ).parent()
.attr( 'tabindex', '0' )
// For accessibility, show the menu when the h3 is clicked (bug 24298/46486)
.on( 'click keypress', function ( e ) {
if ( e.type === 'click' || e.which === 13 ) {
$el.toggleClass( 'menuForceShow' );
e.preventDefault();
}
} )
// When the heading has focus, also set a class that will change the arrow icon
.focus( function () {
$el.find( '> a' ).addClass( 'vectorMenuFocus' );
} )
.blur( function () {
$el.find( '> a' ).removeClass( 'vectorMenuFocus' );
} )
.find( '> a:first' )
// As the h3 can already be focused there's no need for the link to be focusable
.attr( 'tabindex', '-1' );
} );
// Bind callback functions to animate our drop down menu in and out
// and then call the collapsibleTabs function on the menu
$tabContainer
.on( 'beforeTabCollapse', function () {
// If the dropdown was hidden, show it
if ( $cactions.hasClass( 'emptyPortlet' ) ) {
$cactions
.removeClass( 'emptyPortlet' )
.find( 'h3' )
.css( 'width', '1px' ).animate( { width: initialCactionsWidth() }, 'normal' );
}
} )
.on( 'beforeTabExpand', function () {
// If we're removing the last child node right now, hide the dropdown
if ( $cactions.find( 'li' ).length === 1 ) {
$cactions.find( 'h3' ).animate( { width: '1px' }, 'normal', function () {
$( this ).attr( 'style', '' )
.parent().addClass( 'emptyPortlet' );
} );
}
} )
.collapsibleTabs( {
expandCondition: function ( eleWidth ) {
// (This looks a bit awkward because we're doing expensive queries as late as possible.)
var distance = $.collapsibleTabs.calculateTabDistance();
// If there are at least eleWidth + 1 pixels of free space, expand.
// We add 1 because .width() will truncate fractional values but .offset() will not.
if ( distance >= eleWidth + 1 ) {
return true;
} else {
// Maybe we can still expand? Account for the width of the "Actions" dropdown if the
// expansion would hide it.
if ( $cactions.find( 'li' ).length === 1 ) {
return distance >= eleWidth + 1 - initialCactionsWidth();
} else {
return false;
}
}
},
collapseCondition: function () {
// (This looks a bit awkward because we're doing expensive queries as late as possible.)
// TODO The dropdown itself should probably "fold" to just the down-arrow (hiding the text)
// if it can't fit on the line?
// If there's an overlap, collapse.
if ( $.collapsibleTabs.calculateTabDistance() < 0 ) {
// But only if the width of the tab to collapse is smaller than the width of the dropdown
// we would have to insert. An example language where this happens is Lithuanian (lt).
if ( $cactions.hasClass( 'emptyPortlet' ) ) {
return $tabContainer.children( 'li.collapsible:last' ).width() > initialCactionsWidth();
} else {
return true;
}
} else {
return false;
}
}
} );
} );