Added focusable property to Widget

changelog.txt

@@ -4,6 +4,7 @@ TGUI 0.8.6  (TBD)
 - Added SelectionChanged signal to TextBox
 - Added getSelectionStart and getSelectionEnd functions to TextBox
 - Added mousePressed and mouseReleased to respond to different mouse buttons in custom widgets
+- Added focusable property to widgets
 
 
 TGUI 0.8.5  (6 April 2019)

include/TGUI/Widget.hpp

@@ -497,8 +497,30 @@ namespace tgui
 
 
         /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-        /// @brief Returns whether the widget can gain focus
+        /// @brief Changes whether a widget could be focused
-        /// @return Can the widget be focused?
+        ///
+        /// @param focusable  Should it be possible for the widget to gain focus?
+        ///
+        /// By default all widgets are focusable.
+        /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+        void setFocusable(bool focusable);
+
+
+        /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+        /// @brief Returns whether a widget could be focused
+        ///
+        /// @return Should it be possible for the widget to gain focus?
+        ///
+        /// By default all widgets are focusable.
+        /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+        bool isFocusable() const;
+
+
+        /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+        /// @brief Returns whether the widget can currently gain focus
+        /// @return Can the widget be focused right now?
+        ///
+        /// A widget has to be visible, enabled and focusable for this function to return true.
         /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
         virtual bool canGainFocus() const;
 
@@ -822,6 +844,9 @@ namespace tgui
         // Is the widget focused?
         bool m_focused = false;
 
+        // Can the widget be focused?
+        bool m_focusable = true;
+
         // Keep track of the elapsed time.
         sf::Time m_animationTimeElapsed;
 

src/TGUI/Widget.cpp

@@ -716,9 +716,23 @@ namespace tgui
 
     /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
+    void Widget::setFocusable(bool focusable)
+    {
+        m_focusable = focusable;
+    }
+
+    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+    bool Widget::isFocusable() const
+    {
+        return m_focusable;
+    }
+
+    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
     bool Widget::canGainFocus() const
     {
-        return m_enabled && m_visible;
+        return m_enabled && m_visible && m_focusable;
     }
 
     /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

tests/Widget.cpp

@@ -49,6 +49,15 @@ TEST_CASE("[Widget]")
         REQUIRE(widget->isEnabled());
     }
 
+    SECTION("Focusable")
+    {
+        REQUIRE(widget->isFocusable());
+        widget->setFocusable(false);
+        REQUIRE(!widget->isFocusable());
+        widget->setFocusable(true);
+        REQUIRE(widget->isFocusable());
+    }
+
     SECTION("Parent")
     {
         tgui::Panel::Ptr panel1 = tgui::Panel::create();