MediaWiki:Common.js

/* Any JavaScript here will be loaded for all users on every page load. */

/* Test if an element has a certain class
 *
 * @deprecated:  Use $(element).hasClass() instead.
 */
 
/**
 * Test if an element has a certain class
 * @deprecated:  Use $(element).hasClass() instead.
 */
mw.log.deprecate( window, 'hasClass', function ( element, className ) {
    return $( element ).hasClass( className );
}, 'Use jQuery.hasClass() instead' );

/**
 * Collapsible tables *********************************************************
 *
 * Description: Allows tables to be collapsed, showing only the header.
 */
 
var autoCollapse = 2;
var collapseCaption = 'hide';
var expandCaption = 'show';
var tableIndex = 0;

function collapseTable( tableIndex ) {
    var Button = document.getElementById( 'collapseButton' + tableIndex );
    var Table = document.getElementById( 'collapsibleTable' + tableIndex );

    if ( !Table || !Button ) {
        return false;
    }

    var Rows = Table.rows;
    var i;

    if ( Button.firstChild.data === collapseCaption ) {
        for ( i = 1; i < Rows.length; i++ ) {
            Rows[i].style.display = 'none';
        }
        Button.firstChild.data = expandCaption;
    } else {
        for ( i = 1; i < Rows.length; i++ ) {
            Rows[i].style.display = Rows[0].style.display;
        }
        Button.firstChild.data = collapseCaption;
    }
}

function createClickHandler( tableIndex ) {
    return function ( e ) {
        e.preventDefault();
        collapseTable( tableIndex );
    };
}

function createCollapseButtons( $content ) {
    var NavigationBoxes = {};
    var $Tables = $content.find( 'table' );
    var i;

    $Tables.each( function( i, table ) {
        if ( $(table).hasClass( 'collapsible' ) ) {

            /* only add button and increment count if there is a header row to work with */
            var HeaderRow = table.getElementsByTagName( 'tr' )[0];
            if ( !HeaderRow ) {
                return;
            }
            var Header = table.getElementsByTagName( 'th' )[0];
            if ( !Header ) {
                return;
            }

            NavigationBoxes[ tableIndex ] = table;
            table.setAttribute( 'id', 'collapsibleTable' + tableIndex );

            var Button     = document.createElement( 'span' );
            var ButtonLink = document.createElement( 'a' );
            var ButtonText = document.createTextNode( collapseCaption );
            // Styles are declared in [[MediaWiki:Common.css]]
            Button.className = 'collapseButton';

            ButtonLink.style.color = Header.style.color;
            ButtonLink.setAttribute( 'id', 'collapseButton' + tableIndex );
            ButtonLink.setAttribute( 'href', '#' );
            $( ButtonLink ).on( 'click', createClickHandler( tableIndex ) );
            ButtonLink.appendChild( ButtonText );

            Button.appendChild( document.createTextNode( '[' ) );
            Button.appendChild( ButtonLink );
            Button.appendChild( document.createTextNode( ']' ) );

            Header.insertBefore( Button, Header.firstChild );
            tableIndex++;
        }
    } );

    for ( i = 0;  i < tableIndex; i++ ) {
        if ( $( NavigationBoxes[i] ).hasClass( 'collapsed' ) ||
            ( tableIndex >= autoCollapse && $( NavigationBoxes[i] ).hasClass( 'autocollapse' ) )
        ) {
            collapseTable( i );
        }
        else if ( $( NavigationBoxes[i] ).hasClass ( 'innercollapse' ) ) {
            var element = NavigationBoxes[i];
            while ((element = element.parentNode)) {
                if ( $( element ).hasClass( 'outercollapse' ) ) {
                    collapseTable ( i );
                    break;
                }
            }
        }
    }
}

mw.hook( 'wikipage.content' ).add( createCollapseButtons );

/** Dynamic Navigation Bars (experimental) *************************************
 *
 *  Description: See [[Wikipedia:NavFrame]].
 *  Maintainers: UNMAINTAINED
 */
 
/* set up the words in your language */
var NavigationBarHide = '[' + collapseCaption + ']';
var NavigationBarShow = '[' + expandCaption + ']';
var indexNavigationBar = 0;

/**
 * Shows and hides content and picture (if available) of navigation bars
 * Parameters:
 *     indexNavigationBar: the index of navigation bar to be toggled
 **/
window.toggleNavigationBar = function ( indexNavigationBar, event ) {
    var NavToggle = document.getElementById( 'NavToggle' + indexNavigationBar );
    var NavFrame = document.getElementById( 'NavFrame' + indexNavigationBar );
    var NavChild;

    if ( !NavFrame || !NavToggle ) {
        return false;
    }

    /* if shown now */
    if ( NavToggle.firstChild.data === NavigationBarHide ) {
        for ( NavChild = NavFrame.firstChild; NavChild != null; NavChild = NavChild.nextSibling ) {
            if ( $( NavChild ).hasClass( 'NavContent' ) || $( NavChild ).hasClass( 'NavPic' ) ) {
                NavChild.style.display = 'none';
            }
        }
    NavToggle.firstChild.data = NavigationBarShow;

    /* if hidden now */
    } else if ( NavToggle.firstChild.data === NavigationBarShow ) {
        for ( NavChild = NavFrame.firstChild; NavChild != null; NavChild = NavChild.nextSibling ) {
            if ( $( NavChild ).hasClass( 'NavContent' ) || $( NavChild ).hasClass( 'NavPic' ) ) {
                NavChild.style.display = 'block';
            }
        }
        NavToggle.firstChild.data = NavigationBarHide;
    }

    event.preventDefault();
};

/* adds show/hide-button to navigation bars */
function createNavigationBarToggleButton( $content ) {
    var NavChild;
    /* iterate over all < div >-elements */
    var $divs = $content.find( 'div' );
    $divs.each( function ( i, NavFrame ) {
        /* if found a navigation bar */
        if ( $( NavFrame ).hasClass( 'NavFrame' ) ) {

            indexNavigationBar++;
            var NavToggle = document.createElement( 'a' );
            NavToggle.className = 'NavToggle';
            NavToggle.setAttribute( 'id', 'NavToggle' + indexNavigationBar );
            NavToggle.setAttribute( 'href', '#' );
            $( NavToggle ).on( 'click', $.proxy( window.toggleNavigationBar, window, indexNavigationBar ) );

            var isCollapsed = $( NavFrame ).hasClass( 'collapsed' );
            /**
             * Check if any children are already hidden.  This loop is here for backwards compatibility:
             * the old way of making NavFrames start out collapsed was to manually add style="display:none"
             * to all the NavPic/NavContent elements.  Since this was bad for accessibility (no way to make
             * the content visible without JavaScript support), the new recommended way is to add the class
             * "collapsed" to the NavFrame itself, just like with collapsible tables.
             */
            for ( NavChild = NavFrame.firstChild; NavChild != null && !isCollapsed; NavChild = NavChild.nextSibling ) {
                if ( $( NavChild ).hasClass( 'NavPic' ) || $( NavChild ).hasClass( 'NavContent' ) ) {
                    if ( NavChild.style.display === 'none' ) {
                        isCollapsed = true;
                    }
                }
            }
            if ( isCollapsed ) {
                for ( NavChild = NavFrame.firstChild; NavChild != null; NavChild = NavChild.nextSibling ) {
                    if ( $( NavChild ).hasClass( 'NavPic' ) || $( NavChild ).hasClass( 'NavContent' ) ) {
                        NavChild.style.display = 'none';
                    }
                }
            }
            var NavToggleText = document.createTextNode( isCollapsed ? NavigationBarShow : NavigationBarHide );
            NavToggle.appendChild( NavToggleText );

            /* Find the NavHead and attach the toggle link (Must be this complicated because Moz's firstChild handling is borked) */
            for( var j = 0; j < NavFrame.childNodes.length; j++ ) {
                if ( $( NavFrame.childNodes[j] ).hasClass( 'NavHead' ) ) {
                    NavToggle.style.color = NavFrame.childNodes[j].style.color;
                    NavFrame.childNodes[j].appendChild( NavToggle );
                }
            }
            NavFrame.setAttribute( 'id', 'NavFrame' + indexNavigationBar );
        }
    } );
}

mw.hook( 'wikipage.content' ).add( createNavigationBarToggleButton );