1 files changed, 55 insertions, 0 deletions
diff --git a/chromium/ash/wm/default_window_resizer.h b/chromium/ash/wm/default_window_resizer.h
new file mode 100644
index 00000000000..621acd39f3b
--- /dev/null
+++ b/chromium/ash/wm/default_window_resizer.h
@@ -0,0 +1,55 @@
+// Copyright (c) 2012 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 ASH_WM_DEFAULT_WINDOW_RESIZER_H_
+#define ASH_WM_DEFAULT_WINDOW_RESIZER_H_
+
+#include "ash/wm/window_resizer.h"
+#include "base/compiler_specific.h"
+
+namespace ash {
+
+// WindowResizer is used by ToplevelWindowEventFilter to handle dragging, moving
+// or resizing a window. All coordinates passed to this are in the parent
+// windows coordiantes.
+class ASH_EXPORT DefaultWindowResizer : public WindowResizer {
+ public:
+  virtual ~DefaultWindowResizer();
+
+  // Creates a new DefaultWindowResizer. The caller takes ownership of the
+  // returned object. Returns NULL if not resizable.
+  static DefaultWindowResizer* Create(aura::Window* window,
+                                      const gfx::Point& location,
+                                      int window_component,
+                                      aura::client::WindowMoveSource source);
+
+  // Returns true if the drag will result in changing the window in anyway.
+  bool is_resizable() const { return details_.is_resizable; }
+
+  bool changed_size() const {
+    return !(details_.bounds_change & kBoundsChange_Repositions);
+  }
+  aura::Window* target_window() const { return details_.window; }
+
+  // WindowResizer:
+  virtual void Drag(const gfx::Point& location, int event_flags) OVERRIDE;
+  virtual void CompleteDrag(int event_flags) OVERRIDE;
+  virtual void RevertDrag() OVERRIDE;
+  virtual aura::Window* GetTarget() OVERRIDE;
+  virtual const gfx::Point& GetInitialLocation() const OVERRIDE;
+
+ private:
+  explicit DefaultWindowResizer(const Details& details);
+
+  const Details details_;
+
+  // Set to true once Drag() is invoked and the bounds of the window change.
+  bool did_move_or_resize_;
+
+  DISALLOW_COPY_AND_ASSIGN(DefaultWindowResizer);
+};
+
+}  // namespace aura
+
+#endif  // ASH_WM_DEFAULT_WINDOW_RESIZER_H_