From 198c5dba77b50abbea65f0a3502f5711a8f7dddb Mon Sep 17 00:00:00 2001
From: Thiemo Kreuz <thiemo.kreuz@wikimedia.de>
Date: Tue, 13 Jul 2021 12:33:52 +0200
Subject: [PATCH] Make button to add undocumented template parameter work

Thanks to the widget now being an actual ButtonElement.

Bug: T274544
Change-Id: I1b0ef28b0aa115a027a07f3ae53c583598483e96
---
 .../widgets/ve.ui.MWTransclusionOutlineTemplateWidget.js   | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/modules/ve-mw/ui/widgets/ve.ui.MWTransclusionOutlineTemplateWidget.js b/modules/ve-mw/ui/widgets/ve.ui.MWTransclusionOutlineTemplateWidget.js
index 4ead53799a..8741cf60a1 100644
--- a/modules/ve-mw/ui/widgets/ve.ui.MWTransclusionOutlineTemplateWidget.js
+++ b/modules/ve-mw/ui/widgets/ve.ui.MWTransclusionOutlineTemplateWidget.js
@@ -38,7 +38,8 @@ ve.ui.MWTransclusionOutlineTemplateWidget = function VeUiMWTransclusionOutlineTe
 	var addParameterButton = new ve.ui.MWTransclusionOutlineButtonWidget( {
 		icon: 'parameter',
 		label: ve.msg( 'visualeditor-dialog-transclusion-add-param' )
-	} );
+	} )
+		.connect( this, { click: 'onAddParameterButtonClick' } );
 
 	this.parameters = new OO.ui.FieldsetLayout( {
 		items: checkboxes
@@ -131,3 +132,7 @@ ve.ui.MWTransclusionOutlineTemplateWidget.prototype.onCheckboxChange = function
 		}
 	}
 };
+
+ve.ui.MWTransclusionOutlineTemplateWidget.prototype.onAddParameterButtonClick = function () {
+	this.templateModel.addParameter( new ve.dm.MWParameterModel( this.templateModel ) );
+};