Port all apps to GApplication.

LibGUI/GApplication.cpp

@@ -2,8 +2,18 @@
 #include <LibGUI/GEventLoop.h>
 #include <LibGUI/GMenuBar.h>
 
+static GApplication* s_the;
+
+GApplication& GApplication::the()
+{
+    ASSERT(s_the);
+    return *s_the;
+}
+
 GApplication::GApplication(int argc, char** argv)
 {
+    ASSERT(!s_the);
+    s_the = this;
     m_event_loop = make<GEventLoop>();
 }
 
@@ -16,6 +26,11 @@ int GApplication::exec()
     return m_event_loop->exec();
 }
 
+void GApplication::exit(int exit_code)
+{
+    m_event_loop->exit(exit_code);
+}
+
 void GApplication::set_menubar(OwnPtr<GMenuBar>&& menubar)
 {
     m_menubar = move(menubar);

LibGUI/GApplication.h

@@ -7,9 +7,12 @@ class GMenuBar;
 
 class GApplication {
 public:
+    static GApplication& the();
     GApplication(int argc, char** argv);
+    ~GApplication();
 
     int exec();
+    void exit(int);
 
     void set_menubar(OwnPtr<GMenuBar>&&);
 

LibGUI/GStyle.cpp

@@ -1,7 +1,7 @@
 #include <LibGUI/GStyle.h>
 #include <SharedGraphics/Painter.h>
 
-GStyle* s_the;
+static GStyle* s_the;
 
 GStyle& GStyle::the()
 {

LibGUI/Makefile

@@ -24,6 +24,7 @@ LIBGUI_OBJS = \
     GMenuBar.o \
     GMenu.o \
     GMenuItem.o \
+    GApplication.o \
     GWindow.o
 
 OBJS = $(SHAREDGRAPHICS_OBJS) $(LIBGUI_OBJS)