MediaWiki:Common.js: Difference between revisions

Revision as of 02:12, 19 June 2013

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

/** Collapsible tables *********************************************************
 *
 *  Description: Allows tables to be collapsed, showing only the header. See
 *                         http://www.mediawiki.org/wiki/Manual:Collapsible_tables.
 *  Maintainers: [[en:User:R. Koot]]
 */
 
var autoCollapse = 2;
var collapseCaption = 'hide';
var expandCaption = 'show';
 
function collapseTable( tableIndex ) {
        var Button = document.getElementById( 'collapseButton' + tableIndex );
        var Table = document.getElementById( 'collapsibleTable' + tableIndex );
 
        if ( !Table || !Button ) {
                return false;
        }
 
        var Rows = Table.rows;
 
        if ( Button.firstChild.data == collapseCaption ) {
                for ( var i = 1; i < Rows.length; i++ ) {
                        Rows[i].style.display = 'none';
                }
                Button.firstChild.data = expandCaption;
        } else {
                for ( var i = 1; i < Rows.length; i++ ) {
                        Rows[i].style.display = Rows[0].style.display;
                }
                Button.firstChild.data = collapseCaption;
        }
}
 
function createCollapseButtons() {
        var tableIndex = 0;
        var NavigationBoxes = new Object();
        var Tables = document.getElementsByTagName( 'table' );
 
        for ( var i = 0; i < Tables.length; i++ ) {
                if ( hasClass( Tables[i], 'collapsible' ) ) {
 
                        /* only add button and increment count if there is a header row to work with */
                        var HeaderRow = Tables[i].getElementsByTagName( 'tr' )[0];
                        if ( !HeaderRow ) {
                                continue;
                        }
                        var Header = HeaderRow.getElementsByTagName( 'th' )[0];
                        if ( !Header ) {
                                continue;
                        }
 
                        NavigationBoxes[tableIndex] = Tables[i];
                        Tables[i].setAttribute( 'id', 'collapsibleTable' + tableIndex );
 
                        var Button = document.createElement( 'span' );
                        var ButtonLink = document.createElement( 'a' );
                        var ButtonText = document.createTextNode( collapseCaption );
 
                        Button.className = 'collapseButton'; // Styles are declared in [[MediaWiki:Common.css]]
 
                        ButtonLink.style.color = Header.style.color;
                        ButtonLink.setAttribute( 'id', 'collapseButton' + tableIndex );
                        ButtonLink.setAttribute( 'href', "javascript:collapseTable(" + tableIndex + ");" );
                        ButtonLink.appendChild( ButtonText );
 
                        Button.appendChild( document.createTextNode( '[' ) );
                        Button.appendChild( ButtonLink );
                        Button.appendChild( document.createTextNode( ']' ) );
 
                        Header.insertBefore( Button, Header.childNodes[0] );
                        tableIndex++;
                }
        }
 
        for ( var i = 0;  i < tableIndex; i++ ) {
                if ( hasClass( NavigationBoxes[i], 'collapsed' ) || ( tableIndex >= autoCollapse && hasClass( NavigationBoxes[i], 'autocollapse' ) ) ) {
                        collapseTable( i );
                } else if ( hasClass( NavigationBoxes[i], 'innercollapse' ) ) {
                        var element = NavigationBoxes[i];
                        while ( element = element.parentNode ) {
                                if ( hasClass( element, 'outercollapse' ) ) {
                                        collapseTable( i );
                                        break;
                                }
                        }
                }
        }
}
 
addOnloadHook( createCollapseButtons );
 
/** Test if an element has a certain class **************************************
 *
 * Description: Uses regular expressions and caching for better performance.
 * Maintainers: [[User:Mike Dillon]], [[User:R. Koot]], [[User:SG]]
 */
 
var hasClass = ( function() {
        var reCache = {};
        return function( element, className ) {
                return ( reCache[className] ? reCache[className] : ( reCache[className] = new RegExp( "(?:\\s|^)" + className + "(?:\\s|$)" ) ) ).test( element.className );
        };
})();
 
/*******************************************************************/
/** Infobox Javascript **************************************
 *
 * From the Harry Potter Wikia
 */


function addAlternatingRowColors() {
	var infoboxes = getElementsByClass('infobox', document.getElementById('content'));
 
	if( infoboxes.length == 0 )
		return;
 
	for( var k = 0; k < infoboxes.length; k++ ) {
		var infobox = infoboxes[k];
 
		var rows = infobox.getElementsByTagName('tr');
		var changeColor = false;
 
		for( var i = 0; i < rows.length; i++ ) {
			if(rows[i].className.indexOf('infoboxstopalt') != -1)
			break;
 
			var ths = rows[i].getElementsByTagName('th');
 
			if( ths.length > 0 ) {
				continue;
			}
 
			if(changeColor)
				rows[i].style.backgroundColor = '#f9f9f9';
			changeColor = !changeColor;
		}
	}
}
 
function addHideButtons() {
	if(typeof getElementsByClass != 'function') {
		return;
	}
	var hidables = getElementsByClass('hidable');
 
	for( var i = 0; i < hidables.length; i++ ) {
		var box = hidables[i];
		var button = getElementsByClass('hidable-button', box, 'span');
 
		if( button != null && button.length > 0 ) {
			button = button[0];
 
			button.onclick = toggleHidable;
			button.appendChild( document.createTextNode('[Hide]') );
 
			if( new ClassTester('start-hidden').isMatch(box) )
				button.onclick('bypass');
		}
	}
}
 
function toggleHidable(bypassStorage) {
	if(typeof getElementsByClass != 'function') {
		return;
	}
 
	var parent = getParentByClass('hidable', this);
	var content = getElementsByClass('hidable-content', parent);
	var nowShown;
 
	if( content != null && content.length > 0 ) {
		content = content[0];
 
		if( content.style.display == 'none' ) {
			content.style.display = content.oldDisplayStyle;
			this.firstChild.nodeValue = '[Hide]';
			nowShown = true;
		} else {
			content.oldDisplayStyle = content.style.display;
			content.style.display = 'none';
			this.firstChild.nodeValue = '[Show]';
			nowShown = false;
		}
 
		if( window.storagePresent && ( typeof( bypassStorage ) == 'undefined' || bypassStorage != 'bypass' ) ) {
			var page = window.pageName.replace(/\W/g, '_');
			var items = getElementsByClass('hidable');
			var item = -1;
 
			for( var i = 0; i < items.length; i++ ) {
				if( items[i] == parent ) {
					item = i;
					break;
				}
			}
 
			if( item == -1 ) {
				return;
			}
 
			var storage = globalStorage[window.location.hostname];
			storage.setItem('hidableshow-' + item + '_' + page, nowShown);
		}
	}
}