Tab dragging as implemented as a mus API.

components/mus/ws/window_tree.h

 // Copyright 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 COMPONENTS_MUS_WS_WINDOW_TREE_H_
 #define COMPONENTS_MUS_WS_WINDOW_TREE_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 148 matching lines @@
   bool SetWindowOpacity(const ClientWindowId& window_id, float opacity);
   bool SetFocus(const ClientWindowId& window_id);
   bool Embed(const ClientWindowId& window_id,
              mojom::WindowTreeClientPtr client);
   void DispatchInputEvent(ServerWindow* target, const ui::Event& event);
 
   bool IsWaitingForNewTopLevelWindow(uint32_t wm_change_id);
   void OnWindowManagerCreatedTopLevelWindow(uint32_t wm_change_id,
                                             uint32_t client_change_id,
                                             const ServerWindow* window);
+  void OnMoveLoopCompleted(uint32_t client_change_id, bool completed);
   void AddActivationParent(const ClientWindowId& window_id);
 
   // Calls through to the client.
   void OnChangeCompleted(uint32_t change_id, bool success);
   void OnAccelerator(uint32_t accelerator_id, const ui::Event& event);
 
   // Called when |tree|'s jankiness changes (see janky_ for definition).
   // Notifies the window manager client so it can update UI for the affected
   // window(s).
   void ClientJankinessChanged(WindowTree* tree);
@@ skipping 211 matching lines @@
   void SetClientArea(
       Id transport_window_id,
       const gfx::Insets& insets,
       mojo::Array<gfx::Rect> transport_additional_client_areas) override;
   void SetHitTestMask(Id transport_window_id, const gfx::Rect& mask) override;
   void GetWindowManagerClient(
       mojo::AssociatedInterfaceRequest<mojom::WindowManagerClient> internal)
       override;
   void GetCursorLocationMemory(const GetCursorLocationMemoryCallback& callback)
       override;
+  void PerformWindowMove(uint32_t change_id,
+                         Id window_id,
+                         const gfx::Point& cursor) override;
+  void CancelWindowMove(Id window_id) override;
 
   // mojom::WindowManagerClient:
   void AddAccelerator(uint32_t id,
                       mojom::EventMatcherPtr event_matcher,
                       const AddAcceleratorCallback& callback) override;
   void RemoveAccelerator(uint32_t id) override;
   void AddActivationParent(Id transport_window_id) override;
   void RemoveActivationParent(Id transport_window_id) override;
   void ActivateNextWindow() override;
   void SetUnderlaySurfaceOffsetAndExtendedHitArea(
       Id window_id,
       int32_t x_offset,
       int32_t y_offset,
       const gfx::Insets& hit_area) override;
   void WmResponse(uint32_t change_id, bool response) override;
   void WmRequestClose(Id transport_window_id) override;
   void WmSetFrameDecorationValues(
       mojom::FrameDecorationValuesPtr values) override;
   void WmSetNonClientCursor(uint32_t window_id,
                             mojom::Cursor cursor_id) override;
   void OnWmCreatedTopLevelWindow(uint32_t change_id,
                                  Id transport_window_id) override;
+  void OnWmMoveLoopCompleted(uint32_t change_id,
+                             Id transport_window_id,
+                             bool succeeded) override;
 
   // AccessPolicyDelegate:
   bool HasRootForAccessPolicy(const ServerWindow* window) const override;
   bool IsWindowKnownForAccessPolicy(const ServerWindow* window) const override;
   bool IsWindowRootOfAnotherTreeForAccessPolicy(
       const ServerWindow* window) const override;
 
   WindowServer* window_server_;
 
   UserId user_id_;
@@ skipping 47 matching lines @@
   std::unique_ptr<WaitingForTopLevelWindowInfo>
       waiting_for_top_level_window_info_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTree);
 };
 
 }  // namespace ws
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_WS_WINDOW_TREE_H_