MacViews: Implement text input.

ui/views/cocoa/bridged_native_widget.h

Index: ui/views/cocoa/bridged_native_widget.h
diff --git a/ui/views/cocoa/bridged_native_widget.h b/ui/views/cocoa/bridged_native_widget.h
index 3e21bbf9e83b7089065fa26fcf95f2551df5d513..64cf81d71129b0974eccf1e128be71d3f9d4fcd9 100644
--- a/ui/views/cocoa/bridged_native_widget.h
+++ b/ui/views/cocoa/bridged_native_widget.h
@@ -9,6 +9,7 @@
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
+#import "ui/views/focus/focus_manager.h"
 #include "ui/views/ime/input_method_delegate.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/widget.h"
@@ -29,7 +30,8 @@ class View;
 // A bridge to an NSWindow managed by an instance of NativeWidgetMac or
 // DesktopNativeWidgetMac. Serves as a helper class to bridge requests from the
 // NativeWidgetMac to the Cocoa window. Behaves a bit like an aura::Window.
-class VIEWS_EXPORT BridgedNativeWidget : public internal::InputMethodDelegate {
+class VIEWS_EXPORT BridgedNativeWidget : public internal::InputMethodDelegate,
+                                         public FocusChangeListener {
  public:
   // Creates one side of the bridge. |parent| must not be NULL.
   explicit BridgedNativeWidget(NativeWidgetMac* parent);
@@ -39,6 +41,10 @@ class VIEWS_EXPORT BridgedNativeWidget : public internal::InputMethodDelegate {
   void Init(base::scoped_nsobject<NSWindow> window,
             const Widget::InitParams& params);
 
+  // Sets or clears the focus manager to use for tracking focused views.
+  // This does NOT take ownership of |focus_manager|.
+  void SetFocusManager(FocusManager* focus_manager);
+
   // Set or clears the views::View bridged by the content view. This does NOT
   // take ownership of |view|.
   void SetRootView(views::View* view);
@@ -66,6 +72,13 @@ class VIEWS_EXPORT BridgedNativeWidget : public internal::InputMethodDelegate {
   base::scoped_nsobject<ViewsNSWindowDelegate> window_delegate_;
   base::scoped_nsobject<BridgedContentView> bridged_view_;
   scoped_ptr<ui::InputMethod> input_method_;
+  FocusManager* focus_manager_;  // Weak. Owned by our Widget.
+
+  // Overridden from FocusChangeListener:
+  virtual void OnWillChangeFocus(View* focused_before,
+                                 View* focused_now) OVERRIDE;
+  virtual void OnDidChangeFocus(View* focused_before,
+                                View* focused_now) OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(BridgedNativeWidget);
 };