1 files changed, 71 insertions, 0 deletions
diff --git a/chromium/ui/base/win/window_event_target.h b/chromium/ui/base/win/window_event_target.h
new file mode 100644
index 00000000000..c7bb6700d8c
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+++ b/chromium/ui/base/win/window_event_target.h
@@ -0,0 +1,71 @@
+// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef UI_BASE_WIN_WINDOW_EVENT_TARGET_H_
+#define UI_BASE_WIN_WINDOW_EVENT_TARGET_H_
+
+#include <windows.h>
+
+#include "base/basictypes.h"
+#include "ui/base/ui_base_export.h"
+
+namespace ui {
+
+// This interface is implemented by classes who get input events forwarded to
+// them from others. E.g. would be a win32 parent child relationship where the
+// child forwards input events to the parent after doing minimal processing.
+class UI_BASE_EXPORT WindowEventTarget {
+ public:
+  static const char kWin32InputEventTarget[];
+
+  // Handles mouse events like WM_MOUSEMOVE, WM_LBUTTONDOWN, etc.
+  // The |message| parameter identifies the message.
+  // The |w_param| and |l_param| values are dependent on the type of the
+  // message.
+  // Returns the result of processing the message.
+  virtual LRESULT HandleMouseMessage(unsigned int message,
+                                     WPARAM w_param,
+                                     LPARAM l_param) = 0;
+
+  // Handles keyboard events like WM_KEYDOWN/WM_KEYUP, etc.
+  // The |message| parameter identifies the message.
+  // The |w_param| and |l_param| values are dependent on the type of the
+  // message.
+  // Returns the result of processing the message.
+  virtual LRESULT HandleKeyboardMessage(unsigned int message,
+                                        WPARAM w_param,
+                                        LPARAM l_param) = 0;
+
+  // Handles WM_TOUCH events.
+  // The |message| parameter identifies the message.
+  // The |w_param| and |l_param| values are as per MSDN docs.
+  // Returns the result of processing the message.
+  virtual LRESULT HandleTouchMessage(unsigned int message,
+                                     WPARAM w_param,
+                                     LPARAM l_param) = 0;
+
+  // Handles scroll messages like WM_VSCROLL and WM_HSCROLL.
+  // The |message| parameter identifies the scroll message.
+  // The |w_param| and |l_param| values are dependent on the type of scroll.
+  virtual LRESULT HandleScrollMessage(unsigned int message,
+                                      WPARAM w_param,
+                                      LPARAM l_param) = 0;
+
+  // Handles the WM_NCHITTEST message
+  // The |message| parameter identifies the message.
+  // The |w_param| and |l_param| values are as per MSDN docs.
+  // Returns the result of processing the message.
+  virtual LRESULT HandleNcHitTestMessage(unsigned int message,
+                                         WPARAM w_param,
+                                         LPARAM l_param) = 0;
+ protected:
+  WindowEventTarget();
+  virtual ~WindowEventTarget();
+};
+
+}  // namespace ui
+
+#endif  // UI_BASE_WIN_WINDOW_EVENT_TARGET_H_
+
+