resources/mediawiki.page/mediawiki.page.watch.ajax.js

   1 /**
   2  * Animate watch/unwatch links to use asynchronous API requests to
   3  * watch pages, rather than navigating to a different URI.
   4  */
   5 ( function ( mw, $ ) {
   6         /**
   7          * The name of the page to watch or unwatch.
   8          */
   9         var title = mw.config.get( 'wgRelevantPageName', mw.config.get( 'wgPageName' ) );
  10
  11         /**
  12          * Update the link text, link href attribute and (if applicable)
  13          * "loading" class.
  14          *
  15          * @param $link {jQuery} Anchor tag of (un)watch link.
  16          * @param action {String} One of 'watch', 'unwatch'.
  17          * @param state {String} [optional] 'idle' or 'loading'. Default is 'idle'.
  18          */
  19         function updateWatchLink( $link, action, state ) {
  20                 var accesskeyTip, msgKey, $li, otherAction;
  21
  22                 // message keys 'watch', 'watching', 'unwatch' or 'unwatching'.
  23                 msgKey = state === 'loading' ? action + 'ing' : action;
  24                 otherAction = action === 'watch' ? 'unwatch' : 'watch';
  25                 accesskeyTip = $link.attr( 'title' ).match( mw.util.tooltipAccessKeyRegexp );
  26                 $li = $link.closest( 'li' );
  27
  28                 /**
  29                  * Trigger a 'watchpage' event for this List item.
  30                  * Announce the otherAction value as the first param.
  31                  * Used to monitor the state of watch link.
  32                  * TODO: Revise when system wide hooks are implemented
  33                  */
  34                 if ( state === undefined ) {
  35                         $li.trigger( 'watchpage.mw', otherAction );
  36                 }
  37
  38                 $link
  39                         .text( mw.msg( msgKey ) )
  40                         .attr( 'title', mw.msg( 'tooltip-ca-' + action ) +
  41                                 ( accesskeyTip ? ' ' + accesskeyTip[0] : '' )
  42                         )
  43                         .attr( 'href', mw.util.wikiScript() + '?' + $.param({
  44                                         title: title,
  45                                         action: action
  46                                 })
  47                         );
  48
  49                 // Most common ID style
  50                 if ( $li.prop( 'id' ) === 'ca-' + otherAction ) {
  51                         $li.prop( 'id', 'ca-' + action );
  52                 }
  53
  54                 // Special case for vector icon
  55                 if ( $li.hasClass( 'icon' ) ) {
  56                         if ( state === 'loading' ) {
  57                                 $link.addClass( 'loading' );
  58                         } else {
  59                                 $link.removeClass( 'loading' );
  60                         }
  61                 }
  62         }
  63
  64         /**
  65          * @todo This should be moved somewhere more accessible.
  66          * @param url {String}
  67          * @return {String} The extracted action, defaults to 'view'.
  68          */
  69         function mwUriGetAction( url ) {
  70                 var action, actionPaths, key, i, m, parts;
  71
  72                 actionPaths = mw.config.get( 'wgActionPaths' );
  73
  74                 // @todo Does MediaWiki give action path or query param
  75                 // precedence ? If the former, move this to the bottom
  76                 action = mw.util.getParamValue( 'action', url );
  77                 if ( action !== null ) {
  78                         return action;
  79                 }
  80
  81                 for ( key in actionPaths ) {
  82                         if ( actionPaths.hasOwnProperty( key ) ) {
  83                                 parts = actionPaths[key].split( '$1' );
  84                                 for ( i = 0; i < parts.length; i += 1 ) {
  85                                         parts[i] = $.escapeRE( parts[i] );
  86                                 }
  87                                 m = new RegExp( parts.join( '(.+)' ) ).exec( url );
  88                                 if ( m && m[1] ) {
  89                                         return key;
  90                                 }
  91
  92                         }
  93                 }
  94
  95                 return 'view';
  96         }
  97
  98         // Expose local methods
  99         mw.page.watch = {
 100                 updateWatchLink: updateWatchLink
 101         };
 102
 103         $( function () {
 104                 var $links = $( '.mw-watchlink a, a.mw-watchlink, ' +
 105                         '#ca-watch a, #ca-unwatch a, #mw-unwatch-link1, ' +
 106                         '#mw-unwatch-link2, #mw-watch-link2, #mw-watch-link1' );
 107
 108                 // Allowing people to add inline animated links is a little scary
 109                 $links = $links.filter( ':not( #bodyContent *, #content * )' );
 110
 111                 $links.click( function ( e ) {
 112                         var action, api, $link;
 113
 114                         action = mwUriGetAction( this.href );
 115
 116                         if ( action !== 'watch' && action !== 'unwatch' ) {
 117                                 // Could not extract target action from link url,
 118                                 // let native browsing handle it further
 119                                 return true;
 120                         }
 121                         e.preventDefault();
 122                         e.stopPropagation();
 123
 124                         $link = $( this );
 125
 126                         updateWatchLink( $link, action, 'loading' );
 127
 128                         api = new mw.Api();
 129                         api[action](
 130                                 title,
 131                                 // Success
 132                                 function ( watchResponse ) {
 133                                         var $li, otherAction;
 134
 135                                         otherAction = action === 'watch' ? 'unwatch' : 'watch';
 136                                         $li = $link.closest( 'li' );
 137
 138                                         mw.notify( $.parseHTML( watchResponse.message ), {
 139                                                 tag: 'watch-self'
 140                                         } );
 141
 142                                         // Set link to opposite
 143                                         updateWatchLink( $link, otherAction );
 144
 145                                         // Bug 12395 - update the watch checkbox on edit pages when the
 146                                         // page is watched or unwatched via the tab.
 147                                         if ( watchResponse.watched !== undefined ) {
 148                                                 $( '#wpWatchthis' ).prop( 'checked', true );
 149                                         } else {
 150                                                 $( '#wpWatchthis' ).prop( 'checked', false );
 151                                         }
 152                                 },
 153                                 // Error
 154                                 function () {
 155                                         var cleanTitle, msg, link;
 156
 157                                         // Reset link to non-loading mode
 158                                         updateWatchLink( $link, action );
 159
 160                                         // Format error message
 161                                         cleanTitle = title.replace( /_/g, ' ' );
 162                                         link = mw.html.element(
 163                                                 'a', {
 164                                                         href: mw.util.getUrl( title ),
 165                                                         title: cleanTitle
 166                                                 }, cleanTitle
 167                                         );
 168                                         msg = mw.message( 'watcherrortext', link );
 169
 170                                         // Report to user about the error
 171                                         mw.notify( msg, { tag: 'watch-self' } );
 172
 173                                 }
 174                         );
 175                 } );
 176         } );
 177
 178 }( mediaWiki, jQuery ) );