MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / resources / src / mediawiki.special / mediawiki.special.preferences.confirmClose.js

diff --git a/resources/src/mediawiki.special/mediawiki.special.preferences.confirmClose.js b/resources/src/mediawiki.special/mediawiki.special.preferences.confirmClose.js
new file mode 100644 (file)
index 0000000..45df37f
--- /dev/null
+++ b/resources/src/mediawiki.special/mediawiki.special.preferences.confirmClose.js
@@ -0,0 +1,63 @@
+/*!
+ * JavaScript for Special:Preferences: Enable save button and prevent the window being accidentally
+ * closed when any form field is changed.
+ */
+( function ( mw, $ ) {
+       $( function () {
+               var allowCloseWindow;
+
+               // Check if all of the form values are unchanged
+               function isPrefsChanged() {
+                       var inputs = $( '#mw-prefs-form :input[name]' ),
+                               input, $input, inputType,
+                               index, optIndex,
+                               opt;
+
+                       for ( index = 0; index < inputs.length; index++ ) {
+                               input = inputs[ index ];
+                               $input = $( input );
+
+                               // Different types of inputs have different methods for accessing defaults
+                               if ( $input.is( 'select' ) ) {
+                                       // <select> has the property defaultSelected for each option
+                                       for ( optIndex = 0; optIndex < input.options.length; optIndex++ ) {
+                                               opt = input.options[ optIndex ];
+                                               if ( opt.selected !== opt.defaultSelected ) {
+                                                       return true;
+                                               }
+                                       }
+                               } else if ( $input.is( 'input' ) ) { // <input> has defaultValue or defaultChecked
+                                       inputType = input.type;
+                                       if ( inputType === 'radio' || inputType === 'checkbox' ) {
+                                               if ( input.checked !== input.defaultChecked ) {
+                                                       return true;
+                                               }
+                                       } else if ( input.value !== input.defaultValue ) {
+                                               return true;
+                                       }
+                               }
+                       }
+
+                       return false;
+               }
+
+               // Disable the button to save preferences unless preferences have changed
+               // Check if preferences have been changed before JS has finished loading
+               if ( !isPrefsChanged() ) {
+                       $( '#prefcontrol' ).prop( 'disabled', true );
+                       $( '#preferences > fieldset' ).one( 'change keydown mousedown', function () {
+                               $( '#prefcontrol' ).prop( 'disabled', false );
+                       } );
+               }
+
+               // Set up a message to notify users if they try to leave the page without
+               // saving.
+               allowCloseWindow = mw.confirmCloseWindow( {
+                       test: isPrefsChanged,
+                       message: mw.msg( 'prefswarning-warning', mw.msg( 'saveprefs' ) ),
+                       namespace: 'prefswarning'
+               } );
+               $( '#mw-prefs-form' ).submit( $.proxy( allowCloseWindow, 'release' ) );
+               $( '#mw-prefs-restoreprefs' ).click( $.proxy( allowCloseWindow, 'release' ) );
+       } );
+}( mediaWiki, jQuery ) );