Add typing listener (to store strings), deregister listeners on delete

main_menu.cpp

@@ -1,5 +1,15 @@
 #include "menu.hh"
 
+class KeyboardTypingListener : public StringListener
+{
+	virtual void stringCallback(const char *str)
+	{
+		printf("string: %s\n", str);
+		/* Remove thyself! */
+		delete this;
+	}
+};
+
 class MainView;
 class MainMenu : public Menu, KeyListener
 {
@@ -75,6 +85,8 @@ public:
 			Gui::gui->pushView(Gui::gui->kv);
 			Gui::gui->kv->activate();
 			Gui::gui->kv->registerKeyListener(this);
+			if (this->p_submenus[2].sel == 0)
+				Gui::gui->kv->registerStringListener(new KeyboardTypingListener());
 			break;
 
 		case 11:

virtual_keyboard.cpp

@@ -376,3 +376,14 @@ void VirtualKeyboard::updateTheme()
 
 /* The singleton */
 VirtualKeyboard *VirtualKeyboard::kbd;
+
+
+KeyListener::~KeyListener()
+{
+	VirtualKeyboard::kbd->unregisterKeyListener(this);
+}
+
+StringListener::~StringListener()
+{
+	VirtualKeyboard::kbd->unregisterStringListener(this);
+}

virtual_keyboard.hh

@@ -23,6 +23,8 @@ struct virtkey;
 class KeyListener
 {
 public:
+	~KeyListener();
+
 	/* Each key is a string */
 	virtual void keyCallback(bool shift, const char *str) = 0;
 };
@@ -30,6 +32,8 @@ public:
 class StringListener
 {
 public:
+	~StringListener();
+
 	virtual void stringCallback(const char *str) = 0;
 };