Enable save button when removing item from UsersMultiselectWidget list

UsersMultiselectWidget uses a hidden input to store values. Hidden inputs do not trigger onChange events. The onChange event must be trigger manually.

Bug: T173973
Change-Id: Ib9ec31791f1fe7bdde8d91ae16a2111f4320c615

diff --git a/resources/src/mediawiki.widgets/mw.widgets.UsersMultiselectWidget.js b/resources/src/mediawiki.widgets/mw.widgets.UsersMultiselectWidget.js
index 832cb2b..d250ad8 100644 (file)
--- a/resources/src/mediawiki.widgets/mw.widgets.UsersMultiselectWidget.js
+++ b/resources/src/mediawiki.widgets/mw.widgets.UsersMultiselectWidget.js
@@ -152,6 +152,9 @@
        mw.widgets.UsersMultiselectWidget.prototype.updateHiddenInput = function () {
                if ( 'hiddenInput' in this ) {
                        this.hiddenInput.val( this.getSelectedUsernames().join( '\n' ) );
+                       // Hidden inputs do not trigger onChange.
+                       // @see https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/hidden
+                       this.hiddenInput.trigger( 'change' );
                }
        };