Gets mash to use WmToplevelWindowEventHandler

mash/wm/frame/move_loop.h

-// Copyright 2015 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 MASH_WM_FRAME_MOVE_LOOP_H_
-#define MASH_WM_FRAME_MOVE_LOOP_H_
-
-#include <stdint.h>
-
-#include <memory>
-
-#include "base/macros.h"
-#include "components/mus/public/cpp/window_observer.h"
-#include "components/mus/public/interfaces/input_events.mojom.h"
-#include "ui/gfx/geometry/point.h"
-#include "ui/gfx/geometry/rect.h"
-
-namespace ui {
-class PointerEvent;
-}
-
-namespace mash {
-namespace wm {
-
-// MoveLoop is responsible for moving/resizing windows.
-class MoveLoop : public mus::WindowObserver {
- public:
-  enum MoveResult {
-    // The move is still ongoing.
-    CONTINUE,
-
-    // The move is done and the MoveLoop should be destroyed.
-    DONE,
-  };
-
-  enum class HorizontalLocation {
-    LEFT,
-    RIGHT,
-    OTHER,
-  };
-
-  enum class VerticalLocation {
-    TOP,
-    BOTTOM,
-    OTHER,
-  };
-
-  ~MoveLoop() override;
-
-  // If a move/resize loop should occur for the specified parameters creates
-  // and returns a new MoveLoop. All events should be funneled to the MoveLoop
-  // until done (Move()). |ht_location| is one of the constants defined by
-  // HitTestCompat.
-  static std::unique_ptr<MoveLoop> Create(mus::Window* target,
-                                          int ht_location,
-                                          const ui::PointerEvent& event);
-
-  // Processes an event for a move/resize loop.
-  MoveResult Move(const ui::PointerEvent& event);
-
-  // If possible reverts any changes made during the move loop.
-  void Revert();
-
- private:
-  enum class Type {
-    MOVE,
-    RESIZE,
-  };
-
-  MoveLoop(mus::Window* target,
-           const ui::PointerEvent& event,
-           Type type,
-           HorizontalLocation h_loc,
-           VerticalLocation v_loc);
-
-  // Determines the type of move from the specified HitTestCompat value.
-  // Returns true if a move/resize should occur.
-  static bool DetermineType(int ht_location,
-                            Type* type,
-                            HorizontalLocation* h_loc,
-                            VerticalLocation* v_loc);
-
-  // Does the actual move/resize.
-  void MoveImpl(const ui::PointerEvent& event);
-
-  // Cancels the loop. This sets |target_| to null and removes the observer.
-  // After this the MoveLoop is still ongoing and won't stop until the
-  // appropriate event is received.
-  void Cancel();
-
-  gfx::Rect DetermineBoundsFromDelta(const gfx::Vector2d& delta);
-
-  // mus::WindowObserver:
-  void OnTreeChanged(const TreeChangeParams& params) override;
-  void OnWindowBoundsChanged(mus::Window* window,
-                             const gfx::Rect& old_bounds,
-                             const gfx::Rect& new_bounds) override;
-  void OnWindowVisibilityChanged(mus::Window* window) override;
-
-  // The window this MoveLoop is acting on. |target_| is set to null if the
-  // window unexpectedly changes while the move is in progress.
-  mus::Window* target_;
-
-  const Type type_;
-  const HorizontalLocation h_loc_;
-  const VerticalLocation v_loc_;
-
-  // The id of the pointer that triggered the move.
-  const int32_t pointer_id_;
-
-  // Location of the event (in screen coordinates) that triggered the move.
-  const gfx::Point initial_event_screen_location_;
-
-  // Original bounds of the window.
-  const gfx::Rect initial_window_bounds_;
-
-  const gfx::Rect initial_user_set_bounds_;
-
-  // Set to true when MoveLoop changes the bounds of |target_|. The move is
-  // canceled if the bounds change unexpectedly during the move.
-  bool changing_bounds_;
-
-  DISALLOW_COPY_AND_ASSIGN(MoveLoop);
-};
-
-}  // namespace wm
-}  // namespace mash
-
-#endif  // MASH_WM_FRAME_MOVE_LOOP_H_