From 9ef9547b31544637aca600ac65107d5b8028c39a Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Mon, 16 Sep 2019 19:33:29 +0300
Subject: [PATCH] Add a set_modal function for Dialog

---
 source/dialog.cpp | 12 ++++++++++++
 source/dialog.h   |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/source/dialog.cpp b/source/dialog.cpp
index 7b47b66..0b22e98 100644
--- a/source/dialog.cpp
+++ b/source/dialog.cpp
@@ -16,6 +16,18 @@ void Dialog::add_button(Button &button, int code)
 	button.signal_clicked.connect(sigc::bind(sigc::mem_fun(this, &Dialog::response), code));
 }
 
+void Dialog::set_modal(bool m)
+{
+	if(m)
+	{
+		set_focus();
+		if(state&FOCUS)
+			signal_grab_pointer.emit();
+	}
+	else
+		signal_ungrab_pointer.emit();
+}
+
 void Dialog::button_release(int x, int y, unsigned button)
 {
 	Panel::button_release(x, y, button);
diff --git a/source/dialog.h b/source/dialog.h
index f7ec239..10519b1 100644
--- a/source/dialog.h
+++ b/source/dialog.h
@@ -37,6 +37,10 @@ public:
 	response handlers and delete the dialog. */
 	void add_button(Button &, int);
 
+	/** Sets the modality of the dialog.  When modal, the user can't navigate
+	away from the dialog. */
+	void set_modal(bool);
+
 	virtual void button_release(int, int, unsigned);
 	virtual bool key_release(unsigned, unsigned);
 protected:
-- 
2.45.2