Codechange: Add EditBoxGainedFocus method to VideoDriver base class

src/console_gui.cpp

@@ -374,6 +374,11 @@ struct IConsoleWindow : Window
 		this->Scroll(-wheel);
 	}
 
+	void OnFocus() override
+	{
+		VideoDriver::GetInstance()->EditBoxGainedFocus();
+	}
+
 	void OnFocusLost() override
 	{
 		VideoDriver::GetInstance()->EditBoxLostFocus();

src/video/video_driver.hpp

@@ -93,6 +93,11 @@ public:
 	 */
 	virtual void EditBoxLostFocus() {}
 
+	/**
+	 * An edit box gained the input focus
+	 */
+	virtual void EditBoxGainedFocus() {}
+
 	/**
 	 * Get the currently active instance of the video driver.
 	 */

src/window.cpp

@@ -499,11 +499,20 @@ bool Window::SetFocusedWidget(int widget_index)
 		if (this->nested_focus->type == WWT_EDITBOX) VideoDriver::GetInstance()->EditBoxLostFocus();
 	}
 	this->nested_focus = this->GetWidget<NWidgetCore>(widget_index);
+	if (this->nested_focus->type == WWT_EDITBOX) VideoDriver::GetInstance()->EditBoxGainedFocus();
 	return true;
 }
 
 /**
- * Called when window looses focus
+ * Called when window gains focus
+ */
+void Window::OnFocus()
+{
+	if (this->nested_focus != nullptr && this->nested_focus->type == WWT_EDITBOX) VideoDriver::GetInstance()->EditBoxGainedFocus();
+}
+
+/**
+ * Called when window loses focus
  */
 void Window::OnFocusLost()
 {

src/window_gui.h

@@ -592,10 +592,7 @@ public:
 	 */
 	virtual void SetStringParameters(int widget) const {}
 
-	/**
-	 * Called when window gains focus
-	 */
-	virtual void OnFocus() {}
+	virtual void OnFocus();
 
 	virtual void OnFocusLost();