mediawiki-skins-Vector/resources/skins.vector.js/dropdownMenus.js
Jan Drewniak 936bb1d739 Append icon to links created via mw.util.addPortletLink
For modern Vector, the preferred way to place an icon
beside a link is with a dedicated <span> element instead
of a `:before` pseudo-element.

This change appends a <span> element with an icon to
links created by mw.util.addPortletLink instead of
using the `.mw-ui-icon-before` class.

Bug: T314798
Change-Id: I019470d9ca38a6bd63a690882bed03b5f1ac03c4
2022-08-16 15:50:34 -04:00

120 lines
3.8 KiB
JavaScript

/** @interface CheckboxHack */
var
checkboxHack = /** @type {CheckboxHack} */ require( /** @type {string} */( 'mediawiki.page.ready' ) ).checkboxHack,
CHECKBOX_HACK_CONTAINER_SELECTOR = '.vector-menu-dropdown',
CHECKBOX_HACK_CHECKBOX_SELECTOR = '.vector-menu-checkbox',
CHECKBOX_HACK_BUTTON_SELECTOR = '.vector-menu-heading',
CHECKBOX_HACK_TARGET_SELECTOR = '.vector-menu-content';
/**
* Enhance dropdownMenu functionality and accessibility using core's checkboxHack.
*/
function bind() {
// Search for all dropdown containers using the CHECKBOX_HACK_CONTAINER_SELECTOR.
var containers = document.querySelectorAll( CHECKBOX_HACK_CONTAINER_SELECTOR );
Array.prototype.forEach.call( containers, function ( container ) {
var
checkbox = container.querySelector( CHECKBOX_HACK_CHECKBOX_SELECTOR ),
button = container.querySelector( CHECKBOX_HACK_BUTTON_SELECTOR ),
target = container.querySelector( CHECKBOX_HACK_TARGET_SELECTOR );
if ( !( checkbox && button && target ) ) {
return;
}
checkboxHack.bind( window, checkbox, button, target );
} );
}
/**
* Create an icon element to be appended inside the anchor tag.
*
* @param {HTMLElement|null} menuElement
* @param {HTMLElement|null} parentElement
* @param {string|null} id
*
* @return {HTMLElement|undefined}
*/
function createIconElement( menuElement, parentElement, id ) {
// Dropdowns which do not have the noicon class are icon capable.
var isIconCapable = menuElement &&
menuElement.classList.contains( 'vector-menu-dropdown' ) &&
!menuElement.classList.contains( 'vector-menu-dropdown-noicon' );
if ( !isIconCapable || !parentElement ) {
return;
}
var iconElement = document.createElement( 'span' );
iconElement.classList.add( 'mw-ui-icon' );
if ( id ) {
// The following class allows gadgets developers to style or hide an icon.
// * mw-ui-icon-vector-gadget-<id>
// The class is considered stable and should not be removed without
// a #user-notice.
iconElement.classList.add( 'mw-ui-icon-vector-gadget-' + id );
}
return iconElement;
}
/**
* Adds icon placeholder for gadgets to use.
*
* @typedef {Object} PortletLinkData
* @property {string|null} id
*/
/**
* @param {HTMLElement} item
* @param {PortletLinkData} data
*/
function addPortletLinkHandler( item, data ) {
var link = item.querySelector( 'a' );
var $menu = $( item ).parents( '.vector-menu' );
var menuElement = $menu.length && $menu.get( 0 ) || null;
var iconElement = createIconElement( menuElement, link, data.id );
// The views menu has limited space so we need to decide whether there is space
// to accomodate the new item and if not to redirect to the more dropdown.
/* eslint-disable no-jquery/no-global-selector */
if ( $menu.prop( 'id' ) === 'p-views' ) {
// @ts-ignore if undefined as NaN will be ignored
var availableWidth = $( '.mw-article-toolbar-container' ).width() -
// @ts-ignore
$( '#p-namespaces' ).width() - $( '#p-variants' ).width() -
// @ts-ignore
$( '#p-views' ).width() - $( '#p-cactions' ).width();
var moreDropdown = document.querySelector( '#p-cactions ul' );
// If the screen width is less than 720px then the views menu is hidden
if ( moreDropdown && ( availableWidth < 0 || window.innerWidth < 720 ) ) {
moreDropdown.appendChild( item );
// reveal if hidden
mw.util.showPortlet( 'p-cactions' );
}
}
if ( link && iconElement ) {
link.prepend( iconElement );
}
}
// Enhance previously added items.
Array.prototype.forEach.call(
document.querySelectorAll( '.mw-list-item-js' ),
function ( item ) {
addPortletLinkHandler( item, {
id: item.getAttribute( 'id' )
} );
}
);
mw.hook( 'util.addPortletLink' ).add( addPortletLinkHandler );
module.exports = {
dropdownMenus: function dropdownMenus() { bind(); },
addPortletLinkHandler: addPortletLinkHandler
};