X-Git-Url: http://git.tdb.fi/?p=libs%2Fgltk.git;a=blobdiff_plain;f=source%2Fdialog.h;fp=source%2Fdialog.h;h=cc5ed41d1cfa6a4d967b376a71114ec6f8636b59;hp=6f3556586939eeabf882a3661d8063d41dcd8d03;hb=b4d0a86b77fb5146f5a4f6c76690c16204210f1a;hpb=394e5c9969a30b604bfaf78fc05a8c2d5c98ab5b

diff --git a/source/dialog.h b/source/dialog.h
index 6f35565..cc5ed41 100644
--- a/source/dialog.h
+++ b/source/dialog.h
@@ -11,7 +11,7 @@ class Button;
 
 /**
 A Dialog is used for temporary interaction with the user.  When any of the
-Dialog's action buttons are clicked, it will emit a signal and delete itself.
+Dialog's action buttons are clicked, it will emit a signal and hide itself.
 */
 class MSPGLTK_API Dialog: public Panel
 {
@@ -27,10 +27,6 @@ public:
 
 	sigc::signal<void, int> signal_response;
 
-private:
-	bool stale = false;
-
-public:
 	const char *get_class() const override { return "dialog"; }
 
 	/** Adds an action button to the dialog.  Pressing the button will invoke
@@ -41,17 +37,47 @@ public:
 	away from the dialog. */
 	void set_modal(bool);
 
-	void button_release(int, int, unsigned) override;
-	bool key_release(unsigned, unsigned) override;
-	bool navigate(Navigation) override;
 protected:
 	void response(int);
-	void check_stale();
 
 	/** Called when an action button is pressed. */
 	virtual void on_response(int) { }
 };
 
+
+/**
+A dialog which automatically deletes itself after being responded to.
+*/
+template<typename D>
+class MSPGLTK_API AutoDialog: public D
+{
+private:
+	struct StaleChecker
+	{
+		AutoDialog *dialog;
+
+		StaleChecker(AutoDialog &d): dialog(&d) { }
+		~StaleChecker() { if(dialog->stale) delete dialog; }
+	};
+
+	bool stale = false;
+
+	template<typename... Args>
+	AutoDialog(Args &&... args): D(std::forward<Args>(args)...) { }
+
+public:
+	// Ensure that AutoDialog is always created with new.
+	template<typename... Args>
+	static AutoDialog *create(Args &&... args) { return new AutoDialog(std::forward<Args>(args)...); }
+
+	void button_release(int x, int y, unsigned b) override { StaleChecker sc(*this); D::button_release(x, y, b); }
+	bool key_release(unsigned k, unsigned m) override { StaleChecker sc(*this); return D::key_release(k, m); }
+	bool navigate(Navigation n) override { StaleChecker sc(*this); return D::navigate(n); }
+
+protected:
+	void on_response(int c) override { D::on_response(c); stale = true; }
+};
+
 } // namespace GLtk
 } // namespace Msp