resources/jquery/jquery.makeCollapsible.js

   1 /**
   2  * jQuery makeCollapsible
   3  *
   4  * This will enable collapsible-functionality on all passed elements.
   5  * Will prevent binding twice to the same element.
   6  * Initial state is expanded by default, this can be overriden by adding class
   7  * "mw-collapsed" to the "mw-collapsible" element.
   8  * Elements made collapsible have class "mw-made-collapsible".
   9  * Except for tables and lists, the inner content is wrapped in "mw-collapsible-content".
  10  *
  11  * @author Krinkle <krinklemail@gmail.com>
  12  *
  13  * Dual license:
  14  * @license CC-BY 3.0 <http://creativecommons.org/licenses/by/3.0>
  15  * @license GPL2 <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
  16  */
  17 ( function( $, mw ) {
  18
  19 $.fn.makeCollapsible = function() {
  20
  21         return this.each(function() {
  22                 var _fn = 'jquery.makeCollapsible> ';
  23
  24                 // Define reused variables and functions
  25                 var     $that = $(this).addClass( 'mw-collapsible' ), // case: $( '#myAJAXelement' ).makeCollapsible()
  26                         that = this,
  27                         collapsetext = $(this).attr( 'data-collapsetext' ),
  28                         expandtext = $(this).attr( 'data-expandtext' ),
  29                         toggleElement = function( $collapsible, action, $defaultToggle, instantHide ) {
  30                                 // Validate parameters
  31                                 if ( !$collapsible.jquery ) { // $collapsible must be an instance of jQuery
  32                                         return;
  33                                 }
  34                                 if ( action != 'expand' && action != 'collapse' ) {
  35                                         // action must be string with 'expand' or 'collapse'
  36                                         return;
  37                                 }
  38                                 if ( typeof $defaultToggle == 'undefined' ) {
  39                                         $defaultToggle = null;
  40                                 }
  41                                 if ( $defaultToggle !== null && !($defaultToggle instanceof $) ) {
  42                                         // is optional (may be undefined), but if defined it must be an instance of jQuery.
  43                                         // If it's not, abort right away.
  44                                         // After this $defaultToggle is either null or a valid jQuery instance.
  45                                         return;
  46                                 }
  47
  48                                 var $containers = null;
  49
  50                                 if ( action == 'collapse' ) {
  51
  52                                         // Collapse the element
  53                                         if ( $collapsible.is( 'table' ) ) {
  54                                                 // Hide all table rows of this table
  55                                                 // Slide doens't work with tables, but fade does as of jQuery 1.1.3
  56                                                 // http://stackoverflow.com/questions/467336#920480
  57                                                 $containers = $collapsible.find( '>tbody>tr' );
  58                                                 if ( $defaultToggle ) {
  59                                                         // Exclude tablerow containing togglelink
  60                                                         $containers.not( $defaultToggle.closest( 'tr' ) ).stop(true, true).fadeOut();
  61                                                 } else {
  62                                                         if ( instantHide ) {
  63                                                                 $containers.hide();
  64                                                         } else {
  65                                                                 $containers.stop( true, true ).fadeOut();
  66                                                         }
  67                                                 }
  68
  69                                         } else if ( $collapsible.is( 'ul' ) || $collapsible.is( 'ol' ) ) {
  70                                                 $containers = $collapsible.find( '> li' );
  71                                                 if ( $defaultToggle ) {
  72                                                         // Exclude list-item containing togglelink
  73                                                         $containers.not( $defaultToggle.parent() ).stop( true, true ).slideUp();
  74                                                 } else {
  75                                                         if ( instantHide ) {
  76                                                                 $containers.hide();
  77                                                         } else {
  78                                                                 $containers.stop( true, true ).slideUp();
  79                                                         }
  80                                                 }
  81
  82                                         } else { // <div>, <p> etc.
  83                                                 var $collapsibleContent = $collapsible.find( '> .mw-collapsible-content' );
  84
  85                                                 // If a collapsible-content is defined, collapse it
  86                                                 if ( $collapsibleContent.length ) {
  87                                                         if ( instantHide ) {
  88                                                                 $collapsibleContent.hide();
  89                                                         } else {
  90                                                                 $collapsibleContent.slideUp();
  91                                                         }
  92
  93                                                 // Otherwise assume this is a customcollapse with a remote toggle
  94                                                 // .. and there is no collapsible-content because the entire element should be toggled
  95                                                 } else {
  96                                                         if ( $collapsible.is( 'tr' ) || $collapsible.is( 'td' ) || $collapsible.is( 'th' ) ) {
  97                                                                 $collapsible.fadeOut();
  98                                                         } else {
  99                                                                 $collapsible.slideUp();
 100                                                         }
 101                                                 }
 102                                         }
 103
 104                                 } else {
 105
 106                                         // Expand the element
 107                                         if ( $collapsible.is( 'table' ) ) {
 108                                                 $containers = $collapsible.find( '>tbody>tr' );
 109                                                 if ( $defaultToggle ) {
 110                                                         // Exclude tablerow containing togglelink
 111                                                         $containers.not( $defaultToggle.parent().parent() ).stop(true, true).fadeIn();
 112                                                 } else {
 113                                                         $containers.stop(true, true).fadeIn();
 114                                                 }
 115
 116                                         } else if ( $collapsible.is( 'ul' ) || $collapsible.is( 'ol' ) ) {
 117                                                 $containers = $collapsible.find( '> li' );
 118                                                 if ( $defaultToggle ) {
 119                                                         // Exclude list-item containing togglelink
 120                                                         $containers.not( $defaultToggle.parent() ).stop( true, true ).slideDown();
 121                                                 } else {
 122                                                         $containers.stop( true, true ).slideDown();
 123                                                 }
 124
 125                                         } else { // <div>, <p> etc.
 126                                                 var $collapsibleContent = $collapsible.find( '> .mw-collapsible-content' );
 127
 128                                                 // If a collapsible-content is defined, collapse it
 129                                                 if ( $collapsibleContent.length ) {
 130                                                         $collapsibleContent.slideDown();
 131
 132                                                 // Otherwise assume this is a customcollapse with a remote toggle
 133                                                 // .. and there is no collapsible-content because the entire element should be toggled
 134                                                 } else {
 135                                                         if ( $collapsible.is( 'tr' ) || $collapsible.is( 'td' ) || $collapsible.is( 'th' ) ) {
 136                                                                 $collapsible.fadeIn();
 137                                                         } else {
 138                                                                 $collapsible.slideDown();
 139                                                         }
 140                                                 }
 141                                         }
 142                                 }
 143                         },
 144                         // Toggles collapsible and togglelink class and updates text label
 145                         toggleLinkDefault = function( that, e ) {
 146                                 var     $that = $(that),
 147                                         $collapsible = $that.closest( '.mw-collapsible.mw-made-collapsible' ).toggleClass( 'mw-collapsed' );
 148                                 e.preventDefault();
 149                                 e.stopPropagation();
 150
 151                                 // It's expanded right now
 152                                 if ( !$that.hasClass( 'mw-collapsible-toggle-collapsed' ) ) {
 153                                         // Change link to "Show"
 154                                         $that.removeClass( 'mw-collapsible-toggle-expanded' ).addClass( 'mw-collapsible-toggle-collapsed' );
 155                                         if ( $that.find( '> a' ).length ) {
 156                                                 $that.find( '> a' ).text( expandtext );
 157                                         } else {
 158                                                 $that.text( expandtext );
 159                                         }
 160                                         // Collapse element
 161                                         toggleElement( $collapsible, 'collapse', $that );
 162
 163                                 // It's collapsed right now
 164                                 } else {
 165                                         // Change link to "Hide"
 166                                         $that.removeClass( 'mw-collapsible-toggle-collapsed' ).addClass( 'mw-collapsible-toggle-expanded' );
 167                                         if ( $that.find( '> a' ).length ) {
 168                                                 $that.find( '> a' ).text( collapsetext );
 169                                         } else {
 170                                                 $that.text( collapsetext );
 171                                         }
 172                                         // Expand element
 173                                         toggleElement( $collapsible, 'expand', $that );
 174                                 }
 175                                 return;
 176                         },
 177                         // Toggles collapsible and togglelink class
 178                         toggleLinkPremade = function( $that, e ) {
 179                                 var     $collapsible = $that.eq(0).closest( '.mw-collapsible.mw-made-collapsible' ).toggleClass( 'mw-collapsed' );
 180                                 if ( $(e.target).is('a') ) {
 181                                         return true;
 182                                 }
 183                                 e.preventDefault();
 184                                 e.stopPropagation();
 185
 186                                 // It's expanded right now
 187                                 if ( !$that.hasClass( 'mw-collapsible-toggle-collapsed' ) ) {
 188                                         // Change toggle to collapsed
 189                                         $that.removeClass( 'mw-collapsible-toggle-expanded' ).addClass( 'mw-collapsible-toggle-collapsed' );
 190                                         // Collapse element
 191                                         toggleElement( $collapsible, 'collapse', $that );
 192
 193                                 // It's collapsed right now
 194                                 } else {
 195                                         // Change toggle to expanded
 196                                         $that.removeClass( 'mw-collapsible-toggle-collapsed' ).addClass( 'mw-collapsible-toggle-expanded' );
 197                                         // Expand element
 198                                         toggleElement( $collapsible, 'expand', $that );
 199                                 }
 200                                 return;
 201                         },
 202                         // Toggles customcollapsible
 203                         toggleLinkCustom = function( $that, e, $collapsible ) {
 204                                 // For the initial state call of customtogglers there is no event passed
 205                                 if (e) {
 206                                         e.preventDefault();
 207                                 e.stopPropagation();
 208                                 }
 209                                 // Get current state and toggle to the opposite
 210                                 var action = $collapsible.hasClass( 'mw-collapsed' ) ? 'expand' : 'collapse';
 211                                 $collapsible.toggleClass( 'mw-collapsed' );
 212                                 toggleElement( $collapsible, action, $that );
 213
 214                         };
 215
 216                 // Use custom text or default ?
 217                 if( !collapsetext ) {
 218                         collapsetext = mw.msg( 'collapsible-collapse' );
 219                 }
 220                 if ( !expandtext ) {
 221                         expandtext = mw.msg( 'collapsible-expand' );
 222                 }
 223
 224                 // Create toggle link with a space around the brackets (&nbsp;[text]&nbsp;)
 225                 var $toggleLink =
 226                         $( '<a href="#"></a>' )
 227                                 .text( collapsetext )
 228                                 .wrap( '<span class="mw-collapsible-toggle"></span>' )
 229                                 .parent()
 230                                 .prepend( '&nbsp;[' )
 231                                 .append( ']&nbsp;' )
 232                                 .bind( 'click.mw-collapse', function(e) {
 233                                         toggleLinkDefault( this, e );
 234                                 } );
 235
 236                 // Return if it has been enabled already.
 237                 if ( $that.hasClass( 'mw-made-collapsible' ) ) {
 238                         return;
 239                 } else {
 240                         $that.addClass( 'mw-made-collapsible' );
 241                 }
 242
 243                 // Check if this element has a custom position for the toggle link
 244                 // (ie. outside the container or deeper inside the tree)
 245                 // Then: Locate the custom toggle link(s) and bind them
 246                 if ( ( $that.attr( 'id' ) || '' ).indexOf( 'mw-customcollapsible-' ) === 0 ) {
 247
 248                         var thatId = $that.attr( 'id' ),
 249                                 $customTogglers = $( '.' + thatId.replace( 'mw-customcollapsible', 'mw-customtoggle' ) );
 250                         mw.log( _fn + 'Found custom collapsible: #' + thatId );
 251
 252                         // Double check that there is actually a customtoggle link
 253                         if ( $customTogglers.length ) {
 254                                 $customTogglers.bind( 'click.mw-collapse', function( e ) {
 255                                         toggleLinkCustom( $(this), e, $that );
 256                                 } );
 257                         } else {
 258                                 mw.log( _fn + '#' + thatId + ': Missing toggler!' );
 259                         }
 260
 261                         // Initial state
 262                         if ( $that.hasClass( 'mw-collapsed' ) ) {
 263                                 $that.removeClass( 'mw-collapsed' );
 264                                 toggleLinkCustom( $customTogglers, null, $that );
 265                         }
 266
 267                 // If this is not a custom case, do the default:
 268                 // Wrap the contents add the toggle link
 269                 } else {
 270
 271                         // Elements are treated differently
 272                         if ( $that.is( 'table' ) ) {
 273                                 // The toggle-link will be in one the the cells (td or th) of the first row
 274                                 var     $firstRowCells = $( 'tr:first th, tr:first td', that ),
 275                                         $toggle = $firstRowCells.find( '> .mw-collapsible-toggle' );
 276
 277                                 // If theres no toggle link, add it to the last cell
 278                                 if ( !$toggle.length ) {
 279                                         $firstRowCells.eq(-1).prepend( $toggleLink );
 280                                 } else {
 281                                         $toggleLink = $toggle.unbind( 'click.mw-collapse' ).bind( 'click.mw-collapse', function( e ) {
 282                                                 toggleLinkPremade( $toggle, e );
 283                                         } );
 284                                 }
 285
 286                         } else if ( $that.is( 'ul' ) || $that.is( 'ol' ) ) {
 287                                 // The toggle-link will be in the first list-item
 288                                 var     $firstItem = $( 'li:first', $that),
 289                                         $toggle = $firstItem.find( '> .mw-collapsible-toggle' );
 290
 291                                 // If theres no toggle link, add it
 292                                 if ( !$toggle.length ) {
 293                                         // Make sure the numeral order doesn't get messed up, force the first (soon to be second) item
 294                                         // to be "1". Except if the value-attribute is already used.
 295                                         // If no value was set WebKit returns "", Mozilla returns '-1', others return null or undefined.
 296                                         var firstval = $firstItem.attr( 'value' );
 297                                         if ( firstval === undefined || !firstval || firstval == '-1' ) {
 298                                                 $firstItem.attr( 'value', '1' );
 299                                         }
 300                                         $that.prepend( $toggleLink.wrap( '<li class="mw-collapsible-toggle-li"></li>' ).parent() );
 301                                 } else {
 302                                         $toggleLink = $toggle.unbind( 'click.mw-collapse' ).bind( 'click.mw-collapse', function( e ) {
 303                                                 toggleLinkPremade( $toggle, e );
 304                                         } );
 305                                 }
 306
 307                         } else { // <div>, <p> etc.
 308
 309                                 // The toggle-link will be the first child of the element
 310                                 var $toggle = $that.find( '> .mw-collapsible-toggle' );
 311
 312                                 // If a direct child .content-wrapper does not exists, create it
 313                                 if ( !$that.find( '> .mw-collapsible-content' ).length ) {
 314                                         $that.wrapInner( '<div class="mw-collapsible-content"></div>' );
 315                                 }
 316
 317                                 // If theres no toggle link, add it
 318                                 if ( !$toggle.length ) {
 319                                         $that.prepend( $toggleLink );
 320                                 } else {
 321                                         $toggleLink = $toggle.unbind( 'click.mw-collapse' ).bind( 'click.mw-collapse', function( e ) {
 322                                                 toggleLinkPremade( $toggle, e );
 323                                         } );
 324                                 }
 325                         }
 326                 }
 327
 328                 // Initial state (only for those that are not custom)
 329                 if ( $that.hasClass( 'mw-collapsed' ) && ( $that.attr( 'id' ) || '').indexOf( 'mw-customcollapsible-' ) !== 0 ) {
 330                         $that.removeClass( 'mw-collapsed' );
 331                         // The collapsible element could have multiple togglers
 332                         // To toggle the initial state only click one of them (ie. the first one, eq(0) )
 333                         // Else it would go like: hide,show,hide,show for each toggle link.
 334                         toggleElement( $that, 'collapse', $toggleLink.eq(0), /* instantHide = */ true );
 335                         $toggleLink.eq(0).click();
 336                 }
 337         } );
 338 };
 339 } )( jQuery, mediaWiki );