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/**
* JavaScript for the CategoryTree extension.
*
* © 2006 Daniel Kinzler
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Extensions
* @author Daniel Kinzler, brightbyte.de
*/
( function ( $, mw ) {
var loadChildren;
/**
* Expands a given node (loading it's children if not loaded)
*
* @param {jQuery} $link
*/
function expandNode( $link ) {
// Show the children node
var $children = $link.parents( '.CategoryTreeItem' )
.siblings( '.CategoryTreeChildren' );
$children.show();
$link
.text( mw.msg( 'categorytree-collapse-bullet' ) )
.attr( 'title', mw.msg( 'categorytree-collapse' ) )
.data( 'ct-state', 'expanded' );
if ( !$link.data( 'ct-loaded' ) ) {
loadChildren( $link, $children );
}
}
/**
* Collapses a node
*
* @param {jQuery} $link
*/
function collapseNode( $link ) {
// Hide the children node
$link.parents( '.CategoryTreeItem' )
.siblings( '.CategoryTreeChildren' ).hide();
$link
.text( mw.msg( 'categorytree-expand-bullet' ) )
.attr( 'title', mw.msg( 'categorytree-expand' ) )
.data( 'ct-state', 'collapsed' );
}
/**
* Handles clicks on the expand buttons, and calls the appropriate function
*
* @context {Element} CategoryTreeToggle
*/
function handleNode() {
var $link = $( this );
if ( $link.data( 'ct-state' ) === 'collapsed' ) {
expandNode( $link );
} else {
collapseNode( $link );
}
}
/**
* Attach click handler to buttons
*
* @param {jQuery} $content
*/
function attachHandler( $content ) {
$content.find( '.CategoryTreeToggle' )
.click( handleNode )
.attr( 'title', function () {
return mw.msg(
$( this ).data( 'ct-state' ) === 'collapsed' ?
'categorytree-expand' :
'categorytree-collapse'
);
} )
.addClass( 'CategoryTreeToggleHandlerAttached' );
}
/**
* Loads children for a node via an HTTP call
*
* @param {jQuery} $link
* @param {jQuery} $children
*/
loadChildren = function ( $link, $children ) {
var $linkParentCTTag, ctTitle, ctMode, ctOptions;
/**
* Error callback
*/
function error() {
var $retryLink;
$retryLink = $( '<a>' )
.text( mw.msg( 'categorytree-retry' ) )
.attr( {
role: 'button',
tabindex: 0
} )
.on( 'click keypress', function ( e ) {
if (
e.type === 'click' ||
e.type === 'keypress' && e.which === 13
) {
loadChildren( $link, $children );
}
} );
$children
.text( mw.msg( 'categorytree-error' ) + ' ' )
.append( $retryLink );
}
$link.data( 'ct-loaded', true );
$children.append(
$( '<i class="CategoryTreeNotice"></i>' )
.text( mw.msg( 'categorytree-loading' ) )
);
$linkParentCTTag = $link.parents( '.CategoryTreeTag' );
// Element may not have a .CategoryTreeTag parent, fallback to defauls
// Probably a CategoryPage (@todo: based on what?)
ctTitle = $link.data( 'ct-title' );
ctMode = $linkParentCTTag.data( 'ct-mode' );
ctMode = typeof ctMode === 'number' ? ctMode : undefined;
ctOptions = $linkParentCTTag.attr( 'data-ct-options' );
if ( !ctOptions ) {
ctOptions = mw.config.get( 'wgCategoryTreePageCategoryOptions' );
}
// Mode and options have defaults or fallbacks, title does not.
// Don't make a request if there is no title.
if ( typeof ctTitle !== 'string' ) {
error();
return;
}
new mw.Api().get( {
action: 'categorytree',
category: ctTitle,
options: ctOptions,
uselang: mw.config.get( 'wgUserLanguage' ),
formatversion: 2
} ).done( function ( data ) {
data = data.categorytree.html;
if ( data === '' ) {
switch ( ctMode ) {
// CategoryTreeMode::CATEGORIES = 0
case 0:
data = mw.msg( 'categorytree-no-subcategories' );
break;
// CategoryTreeMode::PAGES = 10
case 10:
data = mw.msg( 'categorytree-no-pages' );
break;
// CategoryTreeMode::PARENTS = 100
case 100:
data = mw.msg( 'categorytree-no-parent-categories' );
break;
// CategoryTreeMode::ALL = 20
default:
data = mw.msg( 'categorytree-nothing-found' );
}
data = $( '<i class="CategoryTreeNotice"></i>' ).text( data );
}
$children.html( data );
attachHandler( $children );
} )
.fail( error );
};
// Register click events
mw.hook( 'wikipage.content' ).add( attachHandler );
$( function () {
// Attach click handler for sidebar
attachHandler( $( '#p-categorytree-portlet' ) );
} );
}( jQuery, mediaWiki ) );
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