MediaWiki:Common.js

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


/** Wikipedia's Collapsible tables *********************************************************
*
*  Description: Allows tables to be collapsed, showing only the header. See
*               [http://meta.wikimedia.org/wiki/Help:Collapsing].
*/
 
var autoCollapse = 2;
var collapseCaption = "hide";
var expandCaption = "show";
 
function hasClass( element, className ) {
var Classes = element.className.split( " " );
for ( var i = 0; i < Classes.length; i++ ) {
if ( Classes[i] == className ) {
return ( true );
}
}
return ( false );
}
 
function collapseTable( tableIndex )
{
var Button = document.getElementById( "collapseButton" + tableIndex );
var Table = document.getElementById( "collapsibleTable" + tableIndex );
 
if ( !Table || !Button ) {
return false;
}
 
var Rows = Table.getElementsByTagName( "tr" ); 
 
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" ) ) {
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.style.styleFloat = "right";
Button.style.cssFloat = "right";
Button.style.fontWeight = "normal";
Button.style.textAlign = "right";
Button.style.width = "6em";
 
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( "]" ) );
 
var Header = Tables[i].getElementsByTagName( "tr" )[0].getElementsByTagName( "th" )[0];
/* only add button and increment count if there is a header row to work with */
if (Header) {
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 );