resources/src/mediawiki.action/mediawiki.action.edit.editWarning.js

   1 /*
   2  * Javascript for module editWarning
   3  */
   4 ( function ( mw, $ ) {
   5         $( function () {
   6                 // Check if EditWarning is enabled and if we need it
   7                 if ( $( '#wpTextbox1' ).length === 0 ) {
   8                         return true;
   9                 }
  10                 // Get the original values of some form elements
  11                 $( '#wpTextbox1, #wpSummary' ).each( function () {
  12                         $( this ).data( 'origtext', $( this ).val() );
  13                 } );
  14                 var savedWindowOnBeforeUnload;
  15                 $( window )
  16                         .on( 'beforeunload.editwarning', function () {
  17                                 var retval;
  18
  19                                 // Check if the current values of some form elements are the same as
  20                                 // the original values
  21                                 if (
  22                                         mw.config.get( 'wgAction' ) === 'submit' ||
  23                                                 $( '#wpTextbox1' ).data( 'origtext' ) !== $( '#wpTextbox1' ).val() ||
  24                                                 $( '#wpSummary' ).data( 'origtext' ) !== $( '#wpSummary' ).val()
  25                                 ) {
  26                                         // Return our message
  27                                         retval = mw.msg( 'editwarning-warning' );
  28                                 }
  29
  30                                 // Unset the onbeforeunload handler so we don't break page caching in Firefox
  31                                 savedWindowOnBeforeUnload = window.onbeforeunload;
  32                                 window.onbeforeunload = null;
  33                                 if ( retval !== undefined ) {
  34                                         // ...but if the user chooses not to leave the page, we need to rebind it
  35                                         setTimeout( function () {
  36                                                 window.onbeforeunload = savedWindowOnBeforeUnload;
  37                                         }, 1 );
  38                                         return retval;
  39                                 }
  40                         } )
  41                         .on( 'pageshow.editwarning', function () {
  42                                 // Re-add onbeforeunload handler
  43                                 if ( !window.onbeforeunload ) {
  44                                         window.onbeforeunload = savedWindowOnBeforeUnload;
  45                                 }
  46                         } );
  47
  48                 // Add form submission handler
  49                 $( '#editform' ).submit( function () {
  50                         // Unbind our handlers
  51                         $( window ).off( '.editwarning' );
  52                 } );
  53         } );
  54
  55 }( mediaWiki, jQuery ) );