From: Mikko Rasa <tdb@tdb.fi>
Date: Mon, 16 Sep 2019 16:30:45 +0000 (+0300)
Subject: Remember the last input focus of a Container and restore it when focused
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgltk.git;a=commitdiff_plain;h=5bb0cc92a28a7862571249a2512bcd23ed272344

Remember the last input focus of a Container and restore it when focused
---

diff --git a/source/container.cpp b/source/container.cpp
index 2322733..03dff11 100644
--- a/source/container.cpp
+++ b/source/container.cpp
@@ -17,6 +17,7 @@ Container::Container():
 	pointer_focus(0),
 	pointer_grabbed(false),
 	input_focus(0),
+	saved_input_focus(0),
 	touch_focus(0)
 { }
 
@@ -312,8 +313,16 @@ bool Container::character(wchar_t ch)
 		return false;
 }
 
+void Container::focus_in()
+{
+	if(saved_input_focus && saved_input_focus->get_parent()==this)
+		set_input_focus(saved_input_focus);
+	Widget::focus_in();
+}
+
 void Container::focus_out()
 {
+	saved_input_focus = input_focus;
 	set_input_focus(0);
 	Widget::focus_out();
 }
diff --git a/source/container.h b/source/container.h
index 3117236..f16a9ba 100644
--- a/source/container.h
+++ b/source/container.h
@@ -42,6 +42,7 @@ protected:
 	Widget *pointer_focus;
 	bool pointer_grabbed;
 	Widget *input_focus;
+	Widget *saved_input_focus;
 	Widget *touch_focus;
 
 	Container();
@@ -85,6 +86,7 @@ public:
 	virtual bool key_press(unsigned, unsigned);
 	virtual bool key_release(unsigned, unsigned);
 	virtual bool character(wchar_t);
+	virtual void focus_in();
 	virtual void focus_out();
 	virtual bool navigate(Navigation);
 	virtual void animate(const Time::TimeDelta &);