wikimedia/mediawiki-core

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resources/src/mediawiki.page.ready/ready.js

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var checkboxShift = require( './checkboxShift.js' );
var config = require( './config.json' );
var teleportTarget = require( './teleportTarget.js' );

// Break out of framesets
if ( mw.config.get( 'wgBreakFrames' ) ) {
    // Note: In IE < 9 strict comparison to window is non-standard (the standard didn't exist yet)
    // it works only comparing to window.self or window.window (https://stackoverflow.com/q/4850978/319266)
    if ( window.top !== window.self ) {
        // Un-trap us from framesets
        window.top.location.href = location.href;
    }
}

mw.hook( 'wikipage.content' ).add( function ( $content ) {
    var modules = [];

    var $collapsible;
    if ( config.collapsible ) {
        $collapsible = $content.find( '.mw-collapsible' );
        if ( $collapsible.length ) {
            modules.push( 'jquery.makeCollapsible' );
        }
    }

    var $sortable;
    if ( config.sortable ) {
        $sortable = $content.find( 'table.sortable' );
        if ( $sortable.length ) {
            modules.push( 'jquery.tablesorter' );
        }
    }

    if ( modules.length ) {
        // Both modules are preloaded by Skin::getDefaultModules()
        mw.loader.using( modules ).then( function () {
            // For tables that are both sortable and collapsible,
            // it must be made sortable first and collapsible second.
            // This is because jquery.tablesorter stumbles on the
            // elements inserted by jquery.makeCollapsible (T64878)
            if ( $sortable && $sortable.length ) {
                $sortable.tablesorter();
            }
            if ( $collapsible && $collapsible.length ) {
                $collapsible.makeCollapsible();
            }
        } );
    }
    if ( $content[ 0 ] && $content[ 0 ].isConnected === false ) {
        mw.log.warn( 'wikipage.content hook should not be fired on unattached content' );
    }

    checkboxShift( $content.find( 'input[type="checkbox"]:not(.noshiftselect)' ) );
} );

// Add toolbox portlet to toggle all collapsibles if there are any
require( './toggleAllCollapsibles.js' );

// Handle elements outside the wikipage content
$( function () {
    /**
     * There is a bug on iPad and maybe other browsers where if initial-scale is not set
     * the page cannot be zoomed. If the initial-scale is set on the server side, this will result
     * in an unwanted zoom on mobile devices. To avoid this we check innerWidth and set the initial-scale
     * on the client where needed. The width must be synced with the value in Skin::initPage.
     * More information on this bug in [[phab:T311795]].
     *
     * @ignore
     */
    function fixViewportForTabletDevices() {
        var $viewport = $( 'meta[name=viewport]' );
        var content = $viewport.attr( 'content' );
        var scale = window.outerWidth / window.innerWidth;
        // This adjustment is limited to tablet devices. It must be a non-zero value to work.
        // (these values correspond to @width-breakpoint-tablet and @width-breakpoint-desktop
        if ( window.innerWidth >= 720 && window.innerWidth <= 1000 &&
            content && content.indexOf( 'initial-scale' ) === -1
        ) {
            // Note: If the value is 1 the font-size adjust feature will not work on iPad
            $viewport.attr( 'content', 'width=1000,initial-scale=' + scale );
        }
    }

    // Add accesskey hints to the tooltips
    $( '[accesskey]' ).updateTooltipAccessKeys();

    var node = document.querySelector( '.mw-indicators' );
    if ( node && node.children.length ) {
        /**
         * Fired when a page's status indicators are being added to the DOM.
         *
         * @event ~'wikipage.indicators'
         * @memberof Hooks
         * @param {jQuery} $content jQuery object with the elements of the indicators
         * @see https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Page_status_indicators
         */
        mw.hook( 'wikipage.indicators' ).fire( $( node.children ) );
    }

    var $content = $( '#mw-content-text' );
    // Avoid unusable events, and the errors they cause, for custom skins that
    // do not display any content (T259577).
    if ( $content.length ) {
        /**
         * Fired when wiki content has been added to the DOM.
         *
         * This should only be fired after $content has been attached.
         *
         * This includes the ready event on a page load (including post-edit loads)
         * and when content has been previewed with LivePreview.
         *
         * @event ~'wikipage.content'
         * @memberof Hooks
         * @param {jQuery} $content The most appropriate element containing the content,
         *   such as #mw-content-text (regular content root) or #wikiPreview (live preview
         *   root)
         */
        mw.hook( 'wikipage.content' ).fire( $content );
    }

    var $nodes = $( '.catlinks[data-mw="interface"]' );
    if ( $nodes.length ) {
        /**
         * Fired when categories are being added to the DOM.
         *
         * It is encouraged to fire it before the main DOM is changed (when $content
         * is still detached).  However, this order is not defined either way, so you
         * should only rely on $content itself.
         *
         * This includes the ready event on a page load (including post-edit loads)
         * and when content has been previewed with LivePreview.
         *
         * @event ~'wikipage.categories'
         * @memberof Hooks
         * @param {jQuery} $content The most appropriate element containing the content,
         *   such as .catlinks
         */
        mw.hook( 'wikipage.categories' ).fire( $nodes );
    }

    $nodes = $( 'table.diff[data-mw="interface"]' );
    if ( $nodes.length ) {
        /**
         * Fired when the diff is added to a page containing a diff.
         *
         * Similar to the {@link Hooks~'wikipage.content' wikipage.content hook}
         * $diff may still be detached when the hook is fired.
         *
         * @event ~'wikipage.diff'
         * @memberof Hooks
         * @param {jQuery} $diff The root element of the MediaWiki diff (`table.diff`).
         */
        mw.hook( 'wikipage.diff' ).fire( $nodes.eq( 0 ) );
    }

    $( '#t-print a' ).on( 'click', function ( e ) {
        window.print();
        e.preventDefault();
    } );

    var $permanentLink = $( '#t-permalink a' );
    function updatePermanentLinkHash() {
        if ( mw.util.getTargetFromFragment() ) {
            $permanentLink[ 0 ].hash = location.hash;
        } else {
            $permanentLink[ 0 ].hash = '';
        }
    }
    if ( $permanentLink.length ) {
        $( window ).on( 'hashchange', updatePermanentLinkHash );
        updatePermanentLinkHash();
    }

    /**
     * Fired when a trusted UI element to perform a logout has been activated.
     *
     * This will end the user session, and either redirect to the given URL
     * on success, or queue an error message via {@link mw.notification}.
     *
     * @event ~'skin.logout'
     * @memberof Hooks
     * @param {string} href Full URL
     */
    var LOGOUT_EVENT = 'skin.logout';
    function logoutViaPost( href ) {
        mw.notify(
            mw.message( 'logging-out-notify' ),
            { tag: 'logout', autoHide: false }
        );
        var api = new mw.Api();
        api.postWithToken( 'csrf', {
            action: 'logout'
        } ).then(
            function () {
                location.href = href;
            },
            function ( err, data ) {
                mw.notify(
                    api.getErrorMessage( data ),
                    { type: 'error', tag: 'logout', autoHide: false }
                );
            }
        );
    }
    // Turn logout to a POST action
    mw.hook( LOGOUT_EVENT ).add( logoutViaPost );
    $( config.selectorLogoutLink ).on( 'click', function ( e ) {
        mw.hook( LOGOUT_EVENT ).fire( this.href );
        e.preventDefault();
    } );
    fixViewportForTabletDevices();

    teleportTarget.attach();
} );

/**
 * @private
 * @param {HTMLElement} element
 * @return {boolean} Whether the element is a search input.
 */
function isSearchInput( element ) {
    return element.id === 'searchInput' ||
        element.classList.contains( 'mw-searchInput' );
}

/**
 * Load a given module when a search input is focused.
 *
 * @memberof module:mediawiki.page.ready
 * @param {string} moduleName Name of a module
 */
function loadSearchModule( moduleName ) {
    // T251544: Collect search performance metrics to compare Vue search with
    // mediawiki.searchSuggest performance. Marks and Measures will only be
    // recorded on the Vector skin.
    //
    // Vue search isn't loaded through this function so we are only collecting
    // legacy search performance metrics here.

    var shouldTestSearch = !!( moduleName === 'mediawiki.searchSuggest' &&
        mw.config.get( 'skin' ) === 'vector' &&
        window.performance &&
        performance.mark &&
        performance.measure &&
        // eslint-disable-next-line compat/compat
        performance.getEntriesByName ),
        loadStartMark = 'mwVectorLegacySearchLoadStart',
        loadEndMark = 'mwVectorLegacySearchLoadEnd';

    function requestSearchModule() {
        if ( shouldTestSearch ) {
            performance.mark( loadStartMark );
        }
        mw.loader.using( moduleName, function () {
            if ( shouldTestSearch && performance.getEntriesByName( loadStartMark ).length ) {
                performance.mark( loadEndMark );
                performance.measure( 'mwVectorLegacySearchLoadStartToLoadEnd', loadStartMark, loadEndMark );
            }
        } );
    }

    // Load the module once a search input is focussed.
    function eventListener( e ) {
        if ( isSearchInput( e.target ) ) {
            requestSearchModule();

            document.removeEventListener( 'focusin', eventListener );
        }
    }

    // Load the module now if the search input is already focused,
    // because the user started typing before the JavaScript arrived.
    if ( document.activeElement && isSearchInput( document.activeElement ) ) {
        requestSearchModule();
        return;
    }

    document.addEventListener( 'focusin', eventListener );
}

// Skins may decide to disable this behaviour or use an alternative module.
if ( config.search ) {
    loadSearchModule( 'mediawiki.searchSuggest' );
}

try {
    // Load the post-edit notification module if a notification has been scheduled.
    // Use `sessionStorage` directly instead of 'mediawiki.storage' to minimize dependencies.
    if ( sessionStorage.getItem( 'mw-PostEdit' + mw.config.get( 'wgPageName' ) ) ) {
        mw.loader.load( 'mediawiki.action.view.postEdit' );
    }
} catch ( err ) {}

/**
 * @exports mediawiki.page.ready
 */
module.exports = {
    loadSearchModule,
    /** @type {module:mediawiki.page.ready.CheckboxHack} */
    checkboxHack: require( './checkboxHack.js' ),
    /**
     * A container for displaying elements that overlay the page, such as dialogs.
     *
     * @type {HTMLElement}
     */
    teleportTarget: teleportTarget.target
};