views: Implement focus and blur event.

atom/browser/native_window_views.cc

@@ -62,6 +62,8 @@ NativeWindowViews::NativeWindowViews(content::WebContents* web_contents,
   options.Get(switches::kResizable, &resizable_);
   options.Get(switches::kTitle, &title_);
 
+  window_->AddObserver(this);
+
   views::Widget::InitParams params;
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.delegate = this;
@@ -95,6 +97,7 @@ NativeWindowViews::NativeWindowViews(content::WebContents* web_contents,
 }
 
 NativeWindowViews::~NativeWindowViews() {
+  window_->RemoveObserver(this);
 }
 
 void NativeWindowViews::Close() {
@@ -291,6 +294,17 @@ void NativeWindowViews::UpdateDraggableRegions(
   draggable_region_.reset(draggable_region);
 }
 
+void NativeWindowViews::OnWidgetActivationChanged(
+    views::Widget* widget, bool active) {
+  if (widget != window_.get())
+    return;
+
+  if (active)
+    NotifyWindowFocus();
+  else
+    NotifyWindowBlur();
+}
+
 void NativeWindowViews::DeleteDelegate() {
   NotifyWindowClosed();
 }

atom/browser/native_window_views.h

@@ -12,6 +12,7 @@
 
 #include "atom/browser/ui/accelerator_util.h"
 #include "ui/views/widget/widget_delegate.h"
+#include "ui/views/widget/widget_observer.h"
 
 namespace views {
 class UnhandledKeyboardEventHandler;
@@ -21,7 +22,8 @@ class Widget;
 namespace atom {
 
 class NativeWindowViews : public NativeWindow,
-                          public views::WidgetDelegateView {
+                          public views::WidgetDelegateView,
+                          public views::WidgetObserver {
  public:
   explicit NativeWindowViews(content::WebContents* web_contents,
                             const mate::Dictionary& options);
@@ -74,6 +76,10 @@ class NativeWindowViews : public NativeWindow,
   virtual void UpdateDraggableRegions(
       const std::vector<DraggableRegion>& regions) OVERRIDE;
 
+  // views::WidgetObserver:
+  virtual void OnWidgetActivationChanged(
+      views::Widget* widget, bool active) OVERRIDE;
+
   // views::WidgetDelegate:
   virtual void DeleteDelegate() OVERRIDE;
   virtual views::View* GetInitiallyFocusedView() OVERRIDE;

atom/browser/ui/message_box_views.cc

@@ -199,7 +199,11 @@ views::View* MessageDialog::GetInitiallyFocusedView() {
 }
 
 ui::ModalType MessageDialog::GetModalType() const {
+#if defined(USE_X11)
+  return ui::MODAL_TYPE_NONE;
+#else
   return ui::MODAL_TYPE_WINDOW;
+#endif
 }
 
 gfx::Size MessageDialog::GetPreferredSize() {