Difference between revisions of "MediaWiki:Common.js"

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/* Any JavaScript here will be loaded for all users on every page load. */
 
/* 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: [[**MAINTAINERS**]]
 
*/
 
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 );
 
}
 
}
 
}
 
 
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);
 
};
 
})();
 

Latest revision as of 21:14, 3 May 2012

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