mus: move View Manager to components/mus/vm

components/mus/event_dispatcher.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 COMPONENTS_MUS_EVENT_DISPATCHER_H_
-#define COMPONENTS_MUS_EVENT_DISPATCHER_H_
-
-#include <map>
-
-#include "base/basictypes.h"
-#include "ui/mojo/events/input_event_constants.mojom.h"
-#include "ui/mojo/events/input_events.mojom.h"
-#include "ui/mojo/events/input_key_codes.mojom.h"
-
-namespace gfx {
-class Point;
-}
-
-namespace mus {
-
-class ServerView;
-class ViewTreeHostImpl;
-
-// Handles dispatching events to the right location as well as updating focus.
-class EventDispatcher {
- public:
-  explicit EventDispatcher(ViewTreeHostImpl* view_tree_host);
-  ~EventDispatcher();
-
-  void AddAccelerator(uint32_t id,
-                      mojo::KeyboardCode keyboard_code,
-                      mojo::EventFlags flags);
-  void RemoveAccelerator(uint32_t id);
-
-  void OnEvent(mojo::EventPtr event);
-
- private:
-  struct Accelerator {
-    Accelerator(mojo::KeyboardCode keyboard_code, mojo::EventFlags flags)
-        : keyboard_code(keyboard_code), flags(flags) {}
-
-    // So we can use this in a set.
-    bool operator<(const Accelerator& other) const {
-      if (keyboard_code == other.keyboard_code)
-        return flags < other.flags;
-      return keyboard_code < other.keyboard_code;
-    }
-
-    mojo::KeyboardCode keyboard_code;
-    mojo::EventFlags flags;
-  };
-
-  // Looks to see if there is an accelerator bound to the specified code/flags.
-  // If there is one, sets |accelerator_id| to the id of the accelerator invoked
-  // and returns true. If there is none, returns false so normal key event
-  // processing can continue.
-  bool FindAccelerator(const mojo::Event& event, uint32_t* accelerator_id);
-
-  // Returns the ServerView that should receive |event|. If |event| is a
-  // pointer-type event, then this function also updates the event location to
-  // make sure it is in the returned target's coordinate space.
-  ServerView* FindEventTarget(mojo::Event* event);
-
-  // Finds the deepest visible view that contains the specified location, and
-  // updates |location| to be in the returned view's coordinate space.
-  ServerView* FindDeepestVisibleView(ServerView* view, gfx::Point* location);
-
-  // Finds the deepest visible view for the specified location based on surface
-  // hit-testing. Updates |location| to be in the returned view's coordinate
-  // space.
-  ServerView* FindDeepestVisibleViewFromSurface(gfx::Point* location);
-
-  ViewTreeHostImpl* view_tree_host_;
-
-  using Entry = std::pair<uint32_t, Accelerator>;
-  std::map<uint32_t, Accelerator> accelerators_;
-
-  DISALLOW_COPY_AND_ASSIGN(EventDispatcher);
-};
-
-}  // namespace mus
-
-#endif  // COMPONENTS_MUS_EVENT_DISPATCHER_H_