MediaWiki:Common.js: Difference between revisions

/** 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 );

};

})();