Refactor dialogues: Simplify a lot and remove the tie-in to the main

menu class.

Makefile

@@ -1,5 +1,5 @@
 OBJS=menu.oo main.oo utils.oo gui.oo dialogue_box.oo menu_messages.oo \
-	timer.oo game_info.oo widget.oo virtual_keyboard.oo
+	timer.oo game_info.oo widget.oo virtual_keyboard.oo listener.oo
 
 all: menu
 
@@ -15,7 +15,7 @@ gui.oo: gui.cpp gui.hh Makefile font.hh menu.hh sdl_ttf_font.hh \
 	file_browser.hh timer.hh game_info.hh widget.hh options_menu.cpp \
 	network_menu.cpp
 
-virtual_keyboard.oo: virtual_keyboard.hh virtual_keyboard.cpp widget.hh
+virtual_keyboard.oo: virtual_keyboard.hh virtual_keyboard.cpp widget.hh listener.hh
 
 game_info.oo: game_info.hh game_info.cpp
 
@@ -23,7 +23,9 @@ utils.oo: utils.cpp utils.hh Makefile
 
 timer.oo: timer.cpp timer.hh utils.hh Makefile
 
-dialogue_box.oo: dialogue_box.cpp dialogue_box.hh menu.hh Makefile
+dialogue_box.oo: dialogue_box.cpp dialogue_box.hh menu.hh listener.hh
+
+listener.oo: listener.cpp listener.hh
 
 main.oo: menu.hh utils.hh sdl_ttf_font.hh Makefile
 

dialogue_box.cpp

@@ -1,10 +1,24 @@
 #include "dialogue_box.hh"
 
-DialogueBox::DialogueBox(Font *font, const char *msgs[], int cancel) : Menu(font)
+void DialogueListener::escapeCallback(DialogueBox *which, int selected)
+{
+	Gui::gui->popDialogueBox();
+}
+
+void DialogueListener::selectCallback(DialogueBox *which, int selected)
+{
+	Gui::gui->popDialogueBox();
+}
+
+DialogueBox::DialogueBox(const char *msgs[], int cancel) : Menu(NULL), ListenerManager()
 {
-	this->m_selected = -1;
 	this->m_cancel = cancel;
 
+	this->setFont(Gui::gui->default_font);
+	this->setSelectedBackground(NULL, NULL, NULL,
+			Gui::gui->bg_left, Gui::gui->bg_middle,
+			Gui::gui->bg_right);
+
 	this->setText(msgs, NULL);
 	/* Place on the second to last entry */
 	this->cur_sel = this->n_entries - 2;
@@ -12,6 +26,7 @@ DialogueBox::DialogueBox(Font *font, const char *msgs[], int cancel) : Menu(font
 
 int DialogueBox::selectNext(event_t ev)
 {
+	printf("Al vobb: %d!\n", ev);
 	/* No up/down movement please! */
 	if (ev == KEY_UP || ev == KEY_DOWN)
 		return this->cur_sel;
@@ -20,7 +35,10 @@ int DialogueBox::selectNext(event_t ev)
 
 void DialogueBox::selectCallback(int which)
 {
-	this->m_selected = this->p_submenus[0].sel;
+	for (int i = 0; i < this->nListeners(); i++)
+		if (this->listeners[i])
+			((DialogueListener*)this->listeners[i])->selectCallback(this,
+					this->p_submenus[0].sel);
 }
 
 void DialogueBox::hoverCallback(int which)
@@ -29,5 +47,22 @@ void DialogueBox::hoverCallback(int which)
 
 void DialogueBox::escapeCallback(int which)
 {
-	this->m_selected = this->m_cancel;
+	for (int i = 0; i < this->nListeners(); i++)
+		if (this->listeners[i])
+			((DialogueListener*)this->listeners[i])->selectCallback(this,
+					this->p_submenus[0].sel);
 }
+
+void DialogueBox::draw(SDL_Surface *where)
+{
+	 int d_x = where->w / 2 - Gui::gui->dialogue_bg->w / 2;
+	 int d_y = where->h / 2 - Gui::gui->dialogue_bg->h / 2;
+
+	 SDL_Rect dst = (SDL_Rect){d_x, d_y,
+		 Gui::gui->dialogue_bg->w, Gui::gui->dialogue_bg->h};
+	 SDL_BlitSurface(Gui::gui->dialogue_bg, NULL, where, &dst);
+
+	 Menu::draw(where, d_x + 10, d_y + 10,
+			 Gui::gui->dialogue_bg->w - 10, Gui::gui->dialogue_bg->h - 10);
+}
+

dialogue_box.hh

@@ -2,11 +2,24 @@
 #define __DIALOGUE_BOX_HH__
 
 #include "menu.hh"
+#include "listener.hh"
+#include "gui_view.hh"
+#include "gui.hh"
 
-class DialogueBox : public Menu
+class DialogueBox;
+
+class DialogueListener : public Listener
 {
 public:
-	DialogueBox(Font *font, const char *msgs[], int cancel = 1);
+	virtual void selectCallback(DialogueBox *which, int selected);
+
+	virtual void escapeCallback(DialogueBox *which, int selected);
+};
+
+class DialogueBox : public Menu, public ListenerManager
+{
+public:
+	DialogueBox(const char *msgs[], int cancel = 1);
 
 	virtual void selectCallback(int which);
 
@@ -16,13 +29,14 @@ public:
 
 	virtual int selectNext(event_t ev);
 
-	int selected()
+	virtual void draw(SDL_Surface *where);
+
+	int cancelIndex()
 	{
-		return this->m_selected;
+		return this->m_cancel;
 	}
 
 protected:
-	int m_selected;
 	int m_cancel;
 };
 

gui.cpp

@@ -38,6 +38,18 @@ GuiView::GuiView()
 {
 }
 
+void GuiView::updateTheme()
+{
+}
+
+void GuiView::viewPushCallback()
+{
+}
+
+void GuiView::viewPopCallback()
+{
+}
+
 Gui::Gui()
 {
 	this->focus = NULL;
@@ -66,6 +78,8 @@ Gui::Gui()
 	this->metadata_base_path = METADATA_ROOT_PATH;
 	this->game_base_path = GAME_ROOT_PATH;
 
+	this->dlg = NULL;
+
 	/* Create the views */
 	this->mv = new MainView();
 	this->dv = new DiscView();
@@ -146,6 +160,9 @@ void Gui::runLogic(void)
 
 	if (!this->is_active || !cur_view)
 		return;
+	if (this->dlg)
+		this->dlg->runLogic();
+	else
 		cur_view->runLogic();
 	this->timerController->tick();
 }
@@ -158,14 +175,29 @@ void Gui::pushView(GuiView *view)
 	this->views = (GuiView**)xrealloc(this->views,
 			sizeof(GuiView*) * this->n_views);
 	this->views[cur] = view;
+	view->viewPushCallback();
+}
+
+void Gui::pushDialogueBox(DialogueBox *dlg)
+{
+	this->dlg = dlg;
+}
+
+DialogueBox *Gui::popDialogueBox()
+{
+	DialogueBox *out = this->dlg;
+	this->dlg = NULL;
+
+	return out;
 }
 
 GuiView *Gui::popView()
 {
 	GuiView *cur = this->peekView();
 
-	if (cur)
+	if (!cur)
-		delete cur;
+		return NULL;
+	cur->viewPopCallback();
 
 	this->n_views--;
 	if (this->n_views <= 0)
@@ -181,7 +213,7 @@ GuiView *Gui::popView()
 
 	this->views = (GuiView**)xrealloc(this->views,
 			sizeof(GuiView*) * this->n_views);
-	return this->views[this->n_views - 1];
+	return cur;
 }
 
 void Gui::exitMenu()
@@ -199,6 +231,11 @@ void Gui::pushEvent(SDL_Event *ev)
 
 	if (!this->is_active || !cur_view)
 		return;
+	if (this->dlg)
+	{
+		this->dlg->pushEvent(ev);
+		return;
+	}
 	cur_view->pushEvent(ev);
 }
 
@@ -211,6 +248,8 @@ void Gui::draw(SDL_Surface *where)
 
 	 SDL_BlitSurface(this->background, NULL, screen, NULL);
 	 cur_view->draw(where);
+	 if (this->dlg)
+		 this->dlg->draw(where);
 }
 
 void Gui::activate()

gui.hh

@@ -9,6 +9,7 @@
 #include "gui_view.hh"
 
 class MainView;
+class DialogueBox;
 class DiscView;
 class OptionsView;
 class NetworkView;
@@ -35,6 +36,10 @@ public:
 
 	void pushView(GuiView *view);
 
+	void pushDialogueBox(DialogueBox *dlg);
+
+	DialogueBox *popDialogueBox();
+
 	GuiView *popView();
 
 	GuiView *peekView()
@@ -72,6 +77,8 @@ public:
 	Font *small_font;
 	TimerController *timerController;
 
+	DialogueBox *dlg;
+
 	MainView *mv;
 	DiscView *dv;
 	OptionsView *ov;

listener.hh

@@ -0,0 +1,34 @@
+#ifndef __LISTENER_HH__
+#define __LISTENER_HH__
+
+#include <string.h>
+
+class Listener
+{
+	/* Implemented by the child */
+};
+
+class ListenerManager
+{
+public:
+	ListenerManager();
+
+	void registerListener(Listener *l);
+
+	void unregisterListener(Listener *l);
+
+	void flushListeners()
+	{
+		memset(this->listeners, 0, sizeof(this->listeners));
+	}
+
+	int nListeners()
+	{
+		return sizeof(this->listeners) / sizeof(*this->listeners);
+	}
+
+protected:
+	Listener *listeners[8];
+};
+
+#endif /* __LISTENER_HH__ */

main_menu.cpp

@@ -1,4 +1,5 @@
 #include "menu.hh"
+#include "dialogue_box.hh"
 
 class KeyboardTypingListener : public KeyboardListener
 {
@@ -15,63 +16,31 @@ class KeyboardTypingListener : public KeyboardListener
 	}
 };
 
+class ExitListener : public DialogueListener
+{
+	void escapeCallback(DialogueBox *which, int selected)
+	{
+		delete this;
+	}
+
+	void selectCallback(DialogueBox *which, int selected)
+	{
+		if (selected != which->cancelIndex())
+			exit(0);
+		Gui::gui->popView();
+		delete this;
+	}
+};
+
 class MainView;
 class MainMenu : public Menu
 {
 	friend class MainView;
 
-	class ExitDialogue : public DialogueBox
-	{
-	public:
-		ExitDialogue(Font *font) : DialogueBox(font, exit_dialogue_messages, 1)
-		{
-		}
-
-		void selectCallback(int which)
-		{
-			this->m_selected = this->p_submenus[0].sel;
-			/* Do the exit */
-			if (this->m_selected != this->m_cancel)
-				exit(1);
-		}
-	};
-
 public:
 	MainMenu(Font *font, HelpBox *help) : Menu(font)
 	{
 		this->help = help;
-		/* The dialogue box is only present when needed */
-		this->dialogue = NULL;
-	}
-
-	~MainMenu()
-	{
-		if (this->dialogue)
-			delete this->dialogue;
-	}
-
-	void runLogic()
-	{
-		if (this->dialogue)
-		{
-			this->dialogue->runLogic();
-			if (this->dialogue->selected() >= 0)
-			{
-				delete this->dialogue;
-				this->dialogue = NULL;
-			}
-			return;
-		}
-
-		Menu::runLogic();
-	}
-
-	void pushEvent(SDL_Event *ev)
-	{
-		if (this->dialogue)
-			this->dialogue->pushEvent(ev);
-		else
-			Menu::pushEvent(ev);
 	}
 
 	virtual void selectCallback(int which)
@@ -105,10 +74,9 @@ public:
 			break;
 
 		case 11: /* Exit */
-			this->dialogue = new ExitDialogue(this->font);
+			DialogueBox *exit_dialogue = new DialogueBox(exit_dialogue_messages, 1);
-			this->dialogue->setSelectedBackground(NULL, NULL, NULL,
+			exit_dialogue->registerListener(new ExitListener());
-					this->submenu_bg_left, this->submenu_bg_middle,
+			Gui::gui->pushDialogueBox(exit_dialogue);
-					this->submenu_bg_right);
 			break;
 		}
 	}
@@ -124,7 +92,6 @@ public:
 	}
 
 private:
-	DialogueBox *dialogue;
 	HelpBox *help;
 };
 
@@ -180,17 +147,6 @@ public:
 
 		 this->menu->draw(where, 50, 70, 300, 400);
 		 this->help->draw(where, 354, 24, 264, 210);
-		 if (this->menu->dialogue) {
-			 int d_x = where->w / 2 - Gui::gui->dialogue_bg->w / 2;
-			 int d_y = where->h / 2 - Gui::gui->dialogue_bg->h / 2;
-
-			 dst = (SDL_Rect){d_x, d_y,
-				 Gui::gui->dialogue_bg->w, Gui::gui->dialogue_bg->h};
-			 SDL_BlitSurface(Gui::gui->dialogue_bg, NULL, where, &dst);
-
-			 this->menu->dialogue->draw(where, d_x + 10, d_y + 10,
-					 Gui::gui->dialogue_bg->w - 10, Gui::gui->dialogue_bg->h - 10);
-		 }
 	}
 
 protected:

menu.hh

@@ -55,7 +55,7 @@ public:
 
 	void setText(const char **messages, int *submenu_defaults = NULL);
 
-	void runLogic();
+	virtual void runLogic();
 
 	void draw(SDL_Surface *where,
 			int x, int y, int w, int h);

virtual_keyboard.cpp

@@ -78,7 +78,7 @@ static const char *shifted_names[KEY_COLS * KEY_ROWS] = {
 	NULL,              NULL,        NULL,        NULL,        NULL,        NULL,        "f2",        "f4",        "f6",        "f8",        "Ins",       NULL,        NULL,        NULL,        NULL,
 };
 
-VirtualKeyboard::VirtualKeyboard(Font *font) : GuiView()
+VirtualKeyboard::VirtualKeyboard(Font *font) : GuiView(), ListenerManager()
 {
 	this->font = font;
 	this->sel_x = 0;
@@ -90,8 +90,6 @@ VirtualKeyboard::VirtualKeyboard(Font *font) : GuiView()
 	this->buf_len = 255;
 	this->buf = (struct virtkey*)xmalloc(sizeof(struct virtkey) * this->buf_len);
 	memset(this->buf, 0, sizeof(struct virtkey) * this->buf_len);
-
-	this->flushListeners();
 }
 
 void VirtualKeyboard::draw(SDL_Surface *where, int x_base, int y_base, int w, int h)
@@ -259,36 +257,6 @@ const char VirtualKeyboard::keycodeToChar(int kc)
 	return s[0];
 }
 
-void VirtualKeyboard::registerListener(KeyboardListener *kl)
-{
-	int n_listeners = sizeof(this->listeners) / sizeof(*this->listeners);
-	int i;
-
-	/* Don't register already registered listeners */
-	for (i = 0; i < n_listeners; i++)
-		if (this->listeners[i] == kl)
-			return;
-	/* Find a free spot */
-	for (i = 0; i < n_listeners; i++)
-		if (!this->listeners[i])
-			break;
-
-	panic_if(i == n_listeners,
-			"No free listeners!\n");
-	this->listeners[i] = kl;
-}
-
-void VirtualKeyboard::unregisterListener(KeyboardListener *kl)
-{
-	int n_listeners = sizeof(this->listeners) / sizeof(*this->listeners);
-
-	for (int i = 0; i < n_listeners; i++)
-	{
-		if (this->listeners[i] == kl)
-			this->listeners[i] = NULL;
-	}
-}
-
 void VirtualKeyboard::activate()
 {
 	this->is_active = true;
@@ -362,16 +330,11 @@ void VirtualKeyboard::pushKey(struct virtkey *vk)
 	for (int i = 0; i < n_listeners; i++)
 	{
 		if (this->listeners[i])
-			this->listeners[i]->keyCallback(this->shift_on,
+			((KeyboardListener*)this->listeners[i])->keyCallback(this->shift_on,
 					vk->name);
 	}
 }
 
-void VirtualKeyboard::flushListeners()
-{
-	memset(this->listeners, 0, sizeof(this->listeners));
-}
-
 void VirtualKeyboard::deactivate()
 {
 	this->is_active = false;
@@ -390,7 +353,7 @@ void VirtualKeyboard::done()
 	for (int i = 0; i < n_listeners; i++)
 	{
 		if (this->listeners[i])
-			this->listeners[i]->stringCallback(buf);
+			((KeyboardListener*)this->listeners[i])->stringCallback(buf);
 	}
 	free(buf);
 	this->deactivate();

virtual_keyboard.hh

@@ -17,10 +17,11 @@
 #include "widget.hh"
 #include "gui_view.hh"
 #include "font.hh"
+#include "listener.hh"
 
 struct virtkey; 
 
-class KeyboardListener
+class KeyboardListener : public Listener
 {
 public:
 	~KeyboardListener();
@@ -35,14 +36,11 @@ public:
 	}
 };
 
-class VirtualKeyboard : public GuiView
+class VirtualKeyboard : public GuiView, public ListenerManager
 {
 public:
 	VirtualKeyboard(Font *font);
 
-	void registerListener(KeyboardListener *kl);
-	void unregisterListener(KeyboardListener *kl);
-
 	/* Conversions */
 	const char *keycodeToString(int kc);
 	const char keycodeToChar(int kc);
@@ -77,8 +75,6 @@ public:
 	/* Singleton object */
 	static VirtualKeyboard *kbd;
 private:
-	KeyboardListener *listeners[8];
-
 	void selectNext(int dx, int dy);
 
 	void toggleShift();
@@ -87,8 +83,6 @@ private:
 
 	void done();
 
-	void flushListeners();
-
 	Font *font;
 	int sel_x;
 	int sel_y;