LibGUI+WindowServer: Add support for enabled/disabled actions.

The enabled state of a GAction now propagates both to any toolbar buttons
and any menu items linked to the action. Toolbar buttons are painted in
a grayed out style when disabled. Menu items are gray when disabled. :^)

1 files changed, 16 insertions, 4 deletions

diff --git a/Servers/WindowServer/WSMenuItem.cpp b/Servers/WindowServer/WSMenuItem.cpp
index 49041e0034..95823c86ac 100644
--- a/Servers/WindowServer/WSMenuItem.cpp
+++ b/Servers/WindowServer/WSMenuItem.cpp
@@ -1,18 +1,30 @@
 #include "WSMenuItem.h"
+#include "WSMenu.h"
 
-WSMenuItem::WSMenuItem(unsigned identifier, const String& text, const String& shortcut_text)
-    : m_type(Text)
+WSMenuItem::WSMenuItem(WSMenu& menu, unsigned identifier, const String& text, const String& shortcut_text, bool enabled)
+    : m_menu(menu)
+    , m_type(Text)
+    , m_enabled(enabled)
     , m_identifier(identifier)
     , m_text(text)
     , m_shortcut_text(shortcut_text)
 {
 }
 
-WSMenuItem::WSMenuItem(Type type)
-    : m_type(type)
+WSMenuItem::WSMenuItem(WSMenu& menu, Type type)
+    : m_menu(menu)
+    , m_type(type)
 {
 }
 
 WSMenuItem::~WSMenuItem()
 {
 }
+
+void WSMenuItem::set_enabled(bool enabled)
+{
+    if (m_enabled == enabled)
+        return;
+    m_enabled = enabled;
+    m_menu.redraw();
+}