Fix focus movement in ui::Entry widget on Mac OS X platform

src/ui/entry.cpp

@@ -279,6 +279,9 @@ bool Entry::onProcessMessage(Message* msg)
                 case kKeyV: cmd = EntryCmd::Paste; break;
               }
             }
+            else if (getManager()->isFocusMovementKey(msg)) {
+              break;
+            }
             else if (keymsg->unicodeChar() >= 32) {
               // Ctrl and Alt must be unpressed to insert a character
               // in the text-field.

src/ui/manager.cpp

@@ -1029,6 +1029,20 @@ void Manager::removeMessageFilterFor(Widget* widget)
   }
 }
 
+bool Manager::isFocusMovementKey(Message* msg)
+{
+  switch (static_cast<KeyMessage*>(msg)->scancode()) {
+
+    case kKeyTab:
+    case kKeyLeft:
+    case kKeyRight:
+    case kKeyUp:
+    case kKeyDown:
+      return true;
+  }
+  return false;
+}
+
 /* configures the window for begin the loop */
 void Manager::_openWindow(Window* window)
 {

src/ui/manager.h

@@ -24,8 +24,7 @@ namespace ui {
   class Timer;
   class Window;
 
-  class Manager : public Widget
-  {
+  class Manager : public Widget {
   public:
     static Manager* getDefault() {
       return m_defaultManager;
@@ -79,6 +78,8 @@ namespace ui {
 
     LayoutIO* getLayoutIO();
 
+    bool isFocusMovementKey(Message* msg);
+
     void _openWindow(Window* window);
     void _closeWindow(Window* window, bool redraw_background);