MediaWiki:Common.js

/**
 * Dynamic Navigation Bars. See [[Wikipedia:NavFrame]]
 * 
 * Based on script from en.wikipedia.org, 2008-09-15.
 *
 * @source www.mediawiki.org/wiki/MediaWiki:Gadget-NavFrame.js
 * @maintainer Helder.wiki, 2012–2013
 * @maintainer Krinkle, 2013
 */
( function () {
 
// Set up the words in your language
var collapseCaption = 'hide';
var expandCaption = 'show';
 
var navigationBarHide = '[' + collapseCaption + ']';
var navigationBarShow = '[' + expandCaption + ']';
 
/**
 * Shows and hides content and picture (if available) of navigation bars.
 *
 * @param {number} indexNavigationBar The index of navigation bar to be toggled
 * @param {jQuery.Event} e Event object
 */
function toggleNavigationBar( indexNavigationBar, e ) {
        var navChild,
                navToggle = document.getElementById( 'NavToggle' + indexNavigationBar ),
                navFrame = document.getElementById( 'NavFrame' + indexNavigationBar );
 
        // Prevent browser from jumping to href "#"
        e.preventDefault();
 
        if ( !navFrame || !navToggle ) {
                return false;
        }
 
        // If shown now
        if ( navToggle.firstChild.data == navigationBarHide ) {
                for ( navChild = navFrame.firstChild; navChild != null; navChild = navChild.nextSibling ) {
                        if ( hasClass( navChild, 'NavPic' ) ) {
                                navChild.style.display = 'none';
                        }
                        if ( hasClass( navChild, 'NavContent' ) ) {
                                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( 'NavPic' ) || $( navChild ).hasClass( 'NavContent' ) ) {
                                navChild.style.display = 'block';
                        }
                }
                navToggle.firstChild.data = navigationBarHide;
        }
}
 
/**
 * Adds show/hide-button to navigation bars.
 *
 * @param {jQuery} $content
 */
function createNavigationBarToggleButton( $content ) {
        var i, j, navFrame, navToggle, navToggleText, navChild,
                indexNavigationBar = 0,
                navFrames = $content.find( 'div.NavFrame' ).toArray();
 
        // Iterate over all (new) nav frames
        for ( i = 0; i < navFrames.length; i++ ) {
                navFrame = navFrames[i];
                // If found a navigation bar
                indexNavigationBar++;
                navToggle = document.createElement( 'a' );
                navToggle.className = 'NavToggle';
                navToggle.setAttribute( 'id', 'NavToggle' + indexNavigationBar );
                navToggle.setAttribute( 'href', '#' );
                $( navToggle ).on( 'click', $.proxy( toggleNavigationBar, null, indexNavigationBar ) );
 
                navToggleText = document.createTextNode( navigationBarHide );
                for ( navChild = navFrame.firstChild; navChild != null; navChild = navChild.nextSibling ) {
                        if ( $( navChild ).hasClass( 'NavPic' ) || $( navChild ).hasClass( 'NavContent' ) ) {
                                if ( navChild.style.display == 'none' ) {
                                        navToggleText = document.createTextNode( navigationBarShow );
                                        break;
                                }
                        }
                }
 
                navToggle.appendChild( navToggleText );
                // Find the NavHead and attach the toggle link (Must be this complicated because Moz's firstChild handling is borked)
                for ( j = 0; j < navFrame.childNodes.length; j++ ) {
                        if ( $( navFrame.childNodes[j] ).hasClass( 'NavHead' ) ) {
                                navFrame.childNodes[j].appendChild( navToggle );
                        }
                }
                navFrame.setAttribute( 'id', 'NavFrame' + indexNavigationBar );
        }
}
 
mw.hook( 'wikipage.content' ).add( createNavigationBarToggleButton );
 
}());