views: Add WindowStateWatcher

atom/browser/ui/views/window_state_watcher.cc

@@ -0,0 +1,28 @@
+// Copyright (c) 2014 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/browser/ui/views/window_state_watcher.h"
+
+#include "ui/events/platform/platform_event_source.h"
+
+namespace atom {
+
+WindowStateWatcher::WindowStateWatcher(NativeWindowViews* window)
+    : window_(window),
+      widget_(window->GetAcceleratedWidget()) {
+  ui::PlatformEventSource::GetInstance()->AddPlatformEventObserver(this);
+}
+
+WindowStateWatcher::~WindowStateWatcher() {
+  ui::PlatformEventSource::GetInstance()->RemovePlatformEventObserver(this);
+}
+
+void WindowStateWatcher::WillProcessEvent(const ui::PlatformEvent& event) {
+  LOG(ERROR) << "WillProcessEvent";
+}
+
+void WindowStateWatcher::DidProcessEvent(const ui::PlatformEvent& event) {
+}
+
+}  // namespace atom

atom/browser/ui/views/window_state_watcher.h

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+// Copyright (c) 2014 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "ui/events/platform/platform_event_observer.h"
+
+#include "atom/browser/native_window_views.h"
+
+namespace atom {
+
+class WindowStateWatcher : public ui::PlatformEventObserver {
+ public:
+  explicit WindowStateWatcher(NativeWindowViews* window);
+  virtual ~WindowStateWatcher();
+
+ protected:
+  // ui::PlatformEventObserver:
+  void WillProcessEvent(const ui::PlatformEvent& event) override;
+  void DidProcessEvent(const ui::PlatformEvent& event) override;
+
+ private:
+  NativeWindowViews* window_;
+  gfx::AcceleratedWidget widget_;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowStateWatcher);
+};
+
+}  // namespace atom