LUA: Add Widget close() method to Gui bindings

Change-Id: I48d32c2fc9c65010be1bb7a340faebedc4ce3f4a
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/libs/utils/layoutbuilder.cpp

@@ -746,6 +746,11 @@ void Widget::activateWindow()
     access(this)->activateWindow();
 }
 
+void Widget::close()
+{
+    access(this)->close();
+}
+
 QWidget *Widget::emerge() const
 {
     return access(this);

src/libs/utils/layoutbuilder.h

@@ -230,6 +230,7 @@ public:
     void setNormalMargins(int = 0);
     void setContentsMargins(int left, int top, int right, int bottom);
     void activateWindow();
+    void close();
 };
 
 class QTCREATOR_UTILS_EXPORT Label : public Widget

src/plugins/lua/bindings/gui.cpp

@@ -368,6 +368,8 @@ void setupGuiModule()
             &Widget::show,
             "activateWindow",
             &Widget::activateWindow,
+            "close",
+            &Widget::close,
             sol::base_classes,
             sol::bases<Object, Thing>());
 

src/plugins/lua/meta/gui.lua

@@ -41,6 +41,9 @@ function gui.widget:show() end
 ---Sets the top-level widget containing this widget to be the active window. (see [QWidget::activateWindow](https://doc.qt.io/qt-5/qwidget.html#activateWindow))
 function gui.widget:activateWindow() end
 
+---Closes the widget. (see [QWidget::close](https://doc.qt.io/qt-5/qwidget.html#close))
+function gui.widget:close() end
+
 ---Column layout
 ---@class Column : Layout
 local column = {}