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/**
* jQuery makeCollapsible
*
* This will enable collapsible-functionality on all passed elements.
* - Will prevent binding twice to the same element.
* - Initial state is expanded by default, this can be overriden by adding class
* "mw-collapsed" to the "mw-collapsible" element.
* - Elements made collapsible have jQuery data "mw-made-collapsible" set to true.
* - The inner content is wrapped in a "div.mw-collapsible-content" (except for tables and lists).
*
* @author Krinkle, 2011-2012
*
* Dual license:
* @license CC-BY 3.0 <http://creativecommons.org/licenses/by/3.0>
* @license GPL2 <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
*/
( function ( $, mw ) {
var lpx = 'jquery.makeCollapsible> ';
/**
* @param {jQuery} $collapsible
* @param {string} action The action this function will take ('expand' or 'collapse').
* @param {jQuery|null} [optional] $defaultToggle
* @param {Object|undefined} options
*/
function toggleElement( $collapsible, action, $defaultToggle, options ) {
var $collapsibleContent, $containers;
options = options || {};
// Validate parameters
// $collapsible must be an instance of jQuery
if ( !$collapsible.jquery ) {
return;
}
if ( action !== 'expand' && action !== 'collapse' ) {
// action must be string with 'expand' or 'collapse'
return;
}
if ( $defaultToggle === undefined ) {
$defaultToggle = null;
}
if ( $defaultToggle !== null && !$defaultToggle.jquery ) {
// is optional (may be undefined), but if defined it must be an instance of jQuery.
// If it's not, abort right away.
// After this $defaultToggle is either null or a valid jQuery instance.
return;
}
// Handle different kinds of elements
if ( !options.plainMode && $collapsible.is( 'table' ) ) {
// Tables
$containers = $collapsible.find( '> tbody > tr' );
if ( $defaultToggle ) {
// Exclude table row containing togglelink
$containers = $containers.not( $defaultToggle.closest( 'tr' ) );
}
if ( action === 'collapse' ) {
// Hide all table rows of this table
// Slide doesn't work with tables, but fade does as of jQuery 1.1.3
// http://stackoverflow.com/questions/467336#920480
if ( options.instantHide ) {
$containers.hide();
} else {
$containers.stop( true, true ).fadeOut();
}
} else {
$containers.stop( true, true ).fadeIn();
}
} else if ( !options.plainMode && ( $collapsible.is( 'ul' ) || $collapsible.is( 'ol' ) ) ) {
// Lists
$containers = $collapsible.find( '> li' );
if ( $defaultToggle ) {
// Exclude list-item containing togglelink
$containers = $containers.not( $defaultToggle.parent() );
}
if ( action === 'collapse' ) {
if ( options.instantHide ) {
$containers.hide();
} else {
$containers.stop( true, true ).slideUp();
}
} else {
$containers.stop( true, true ).slideDown();
}
} else {
// Everything else: <div>, <p> etc.
$collapsibleContent = $collapsible.find( '> .mw-collapsible-content' );
// If a collapsible-content is defined, act on it
if ( !options.plainMode && $collapsibleContent.length ) {
if ( action === 'collapse' ) {
if ( options.instantHide ) {
$collapsibleContent.hide();
} else {
$collapsibleContent.slideUp();
}
} else {
$collapsibleContent.slideDown();
}
// Otherwise assume this is a customcollapse with a remote toggle
// .. and there is no collapsible-content because the entire element should be toggled
} else {
if ( action === 'collapse' ) {
if ( options.instantHide ) {
$collapsible.hide();
} else {
if ( $collapsible.is( 'tr' ) || $collapsible.is( 'td' ) || $collapsible.is( 'th' ) ) {
$collapsible.fadeOut();
} else {
$collapsible.slideUp();
}
}
} else {
if ( $collapsible.is( 'tr' ) || $collapsible.is( 'td' ) || $collapsible.is( 'th' ) ) {
$collapsible.fadeIn();
} else {
$collapsible.slideDown();
}
}
}
}
}
/**
* Handles clicking on the collapsible element toggle and other
* situations where a collapsible element is toggled (e.g. the initial
* toggle for collapsed ones).
*
* @param {jQuery} $toggle the clickable toggle itself
* @param {jQuery} $collapsible the collapsible element
* @param {jQuery.Event|null} e either the event or null if unavailable
* @param {Object|undefined} options
*/
function togglingHandler( $toggle, $collapsible, event, options ) {
var wasCollapsed, $textContainer, collapseText, expandText;
if ( event ) {
// Don't fire if a link was clicked, if requested (for premade togglers by default)
if ( options.linksPassthru && $.nodeName( event.target, 'a' ) ) {
return true;
} else {
event.preventDefault();
event.stopPropagation();
}
}
wasCollapsed = $collapsible.hasClass( 'mw-collapsed' );
// Toggle the state of the collapsible element (that is, expand or collapse)
$collapsible.toggleClass( 'mw-collapsed', !wasCollapsed );
// Toggle the mw-collapsible-toggle classes, if requested (for default and premade togglers by default)
if ( options.toggleClasses ) {
$toggle
.toggleClass( 'mw-collapsible-toggle-collapsed', !wasCollapsed )
.toggleClass( 'mw-collapsible-toggle-expanded', wasCollapsed );
}
// Toggle the text ("Show"/"Hide"), if requested (for default togglers by default)
if ( options.toggleText ) {
collapseText = options.toggleText.collapseText;
expandText = options.toggleText.expandText;
$textContainer = $toggle.find( '> a' );
if ( !$textContainer.length ) {
$textContainer = $toggle;
}
$textContainer.text( wasCollapsed ? collapseText : expandText );
}
// And finally toggle the element state itself
toggleElement( $collapsible, wasCollapsed ? 'expand' : 'collapse', $toggle, options );
}
/**
* Toggles collapsible and togglelink class and updates text label.
*
* @param {jQuery} $that
* @param {jQuery.Event} e
* @param {Object|undefined} options
*/
function toggleLinkDefault( $that, e, options ) {
var $collapsible = $that.closest( '.mw-collapsible' );
options = $.extend( { toggleClasses: true }, options );
togglingHandler( $that, $collapsible, e, options );
}
/**
* Toggles collapsible and togglelink class.
*
* @param {jQuery} $that
* @param {jQuery.Event} e
* @param {Object|undefined} options
*/
function toggleLinkPremade( $that, e, options ) {
var $collapsible = $that.eq( 0 ).closest( '.mw-collapsible' );
options = $.extend( { toggleClasses: true, linksPassthru: true }, options );
togglingHandler( $that, $collapsible, e, options );
}
/**
* Toggles customcollapsible.
*
* @param {jQuery} $that
* @param {jQuery.Event} e
* @param {Object|undefined} options
* @param {jQuery} $collapsible
*/
function toggleLinkCustom( $that, e, options, $collapsible ) {
options = $.extend( {}, options );
togglingHandler( $that, $collapsible, e, options );
}
/**
* Make any element collapsible.
*
* Supported options:
* - collapseText: text to be used for the toggler when clicking it would
* collapse the element. Default: the 'data-collapsetext' attribute of
* the collapsible element or the content of 'collapsible-collapse'
* message.
* - expandText: text to be used for the toggler when clicking it would
* expand the element. Default: the 'data-expandtext' attribute of
* the collapsible element or the content of 'collapsible-expand'
* message.
* - collapsed: boolean, whether to collapse immediately. By default
* collapse only if the elements has the 'mw-collapsible' class.
* - $customTogglers: jQuerified list of elements to be used as togglers
* for this collapsible element. By default, if the collapsible element
* has an id attribute like 'mw-customcollapsible-XXX', elements with a
* *class* of 'mw-customtoggle-XXX' are made togglers for it.
* - plainMode: boolean, whether to use a "plain mode" when making the
* element collapsible - that is, hide entire tables and lists (instead
* of hiding only all rows but first of tables, and hiding each list
* item separately for lists) and don't wrap other elements in
* div.mw-collapsible-content. May only be used with custom togglers.
*/
$.fn.makeCollapsible = function ( options ) {
return this.each(function () {
var $collapsible, collapsetext, expandtext, $toggle, $toggleLink, $firstItem, collapsibleId,
$customTogglers, firstval;
if ( options === undefined ) {
options = {};
}
// Ensure class "mw-collapsible" is present in case .makeCollapsible()
// is called on element(s) that don't have it yet.
$collapsible = $(this).addClass( 'mw-collapsible' );
// Return if it has been enabled already.
if ( $collapsible.data( 'mw-made-collapsible' ) ) {
return;
} else {
$collapsible.data( 'mw-made-collapsible', true );
}
// Use custom text or default?
collapsetext = options.collapseText || $collapsible.attr( 'data-collapsetext' ) || mw.msg( 'collapsible-collapse' );
expandtext = options.expandText || $collapsible.attr( 'data-expandtext' ) || mw.msg( 'collapsible-expand' );
// Create toggle link with a space around the brackets ( [text] )
$toggleLink =
$( '<a href="#"></a>' )
.text( collapsetext )
.wrap( '<span class="mw-collapsible-toggle"></span>' )
.parent()
.prepend( ' [' )
.append( '] ' )
.on( 'click.mw-collapse', function ( e, opts ) {
opts = $.extend( { toggleText: { collapseText: collapsetext, expandText: expandtext } }, options, opts );
toggleLinkDefault( $(this), e, opts );
} );
// Check if this element has a custom position for the toggle link
// (ie. outside the container or deeper inside the tree)
if ( options.$customTogglers ) {
$customTogglers = $( options.$customTogglers );
} else {
collapsibleId = $collapsible.attr( 'id' ) || '';
if ( collapsibleId.indexOf( 'mw-customcollapsible-' ) === 0 ) {
mw.log( lpx + 'Found custom collapsible: #' + collapsibleId );
$customTogglers = $( '.' + collapsibleId.replace( 'mw-customcollapsible', 'mw-customtoggle' ) );
// Double check that there is actually a customtoggle link
if ( !$customTogglers.length ) {
mw.log( lpx + '#' + collapsibleId + ': Missing toggler!' );
}
}
}
// Bind the custom togglers
if ( $customTogglers && $customTogglers.length ) {
$customTogglers.on( 'click.mw-collapse', function ( e, opts ) {
opts = $.extend( {}, options, opts );
toggleLinkCustom( $(this), e, opts, $collapsible );
} );
// Initial state
if ( options.collapsed || $collapsible.hasClass( 'mw-collapsed' ) ) {
// Remove here so that the toggler goes in the right direction,
// It re-adds the class.
$collapsible.removeClass( 'mw-collapsed' );
toggleLinkCustom( $customTogglers, null, $.extend( { instantHide: true }, options ), $collapsible );
}
// If this is not a custom case, do the default:
// Wrap the contents and add the toggle link
} else {
// Elements are treated differently
if ( $collapsible.is( 'table' ) ) {
// The toggle-link will be in one the the cells (td or th) of the first row
$firstItem = $collapsible.find( 'tr:first th, tr:first td' );
$toggle = $firstItem.find( '> .mw-collapsible-toggle' );
// If theres no toggle link, add it to the last cell
if ( !$toggle.length ) {
$firstItem.eq(-1).prepend( $toggleLink );
} else {
$toggleLink = $toggle.off( 'click.mw-collapse' ).on( 'click.mw-collapse', function ( e, opts ) {
opts = $.extend( {}, options, opts );
toggleLinkPremade( $toggle, e, opts );
} );
}
} else if ( $collapsible.is( 'ul' ) || $collapsible.is( 'ol' ) ) {
// The toggle-link will be in the first list-item
$firstItem = $collapsible.find( 'li:first' );
$toggle = $firstItem.find( '> .mw-collapsible-toggle' );
// If theres no toggle link, add it
if ( !$toggle.length ) {
// Make sure the numeral order doesn't get messed up, force the first (soon to be second) item
// to be "1". Except if the value-attribute is already used.
// If no value was set WebKit returns "", Mozilla returns '-1', others return null or undefined.
firstval = $firstItem.attr( 'value' );
if ( firstval === undefined || !firstval || firstval === '-1' || firstval === -1 ) {
$firstItem.attr( 'value', '1' );
}
$collapsible.prepend( $toggleLink.wrap( '<li class="mw-collapsible-toggle-li"></li>' ).parent() );
} else {
$toggleLink = $toggle.off( 'click.mw-collapse' ).on( 'click.mw-collapse', function ( e, opts ) {
opts = $.extend( {}, options, opts );
toggleLinkPremade( $toggle, e, opts );
} );
}
} else { // <div>, <p> etc.
// The toggle-link will be the first child of the element
$toggle = $collapsible.find( '> .mw-collapsible-toggle' );
// If a direct child .content-wrapper does not exists, create it
if ( !$collapsible.find( '> .mw-collapsible-content' ).length ) {
$collapsible.wrapInner( '<div class="mw-collapsible-content"></div>' );
}
// If theres no toggle link, add it
if ( !$toggle.length ) {
$collapsible.prepend( $toggleLink );
} else {
$toggleLink = $toggle.off( 'click.mw-collapse' ).on( 'click.mw-collapse', function ( e, opts ) {
opts = $.extend( {}, options, opts );
toggleLinkPremade( $toggle, e, opts );
} );
}
}
}
// Initial state (only for those that are not custom,
// because the initial state of those has been taken care of already).
if (
( options.collapsed || $collapsible.hasClass( 'mw-collapsed' ) ) &&
( !$customTogglers || !$customTogglers.length )
) {
$collapsible.removeClass( 'mw-collapsed' );
// The collapsible element could have multiple togglers
// To toggle the initial state only click one of them (ie. the first one, eq(0) )
// Else it would go like: hide,show,hide,show for each toggle link.
// This is just like it would be in reality (only one toggle is clicked at a time).
$toggleLink.eq( 0 ).trigger( 'click', [ { instantHide: true } ] );
}
} );
};
}( jQuery, mediaWiki ) );