blob: ccb01d4c09e71afc89630c5fceebac6ab31db9f3 [file] [log] [blame]
// 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.
#include "base/macros.h"
#include "ui/views/view_targeter.h"
#include "ui/views/views_export.h"
namespace views {
namespace internal {
class RootView;
} // namespace internal
class View;
class ViewTargeterDelegate;
// A derived class of ViewTargeter that defines targeting logic for cases
// needing to access the members of RootView. For example, when determining the
// target of a gesture event, we need to know if a previous gesture has already
// established the View to which all subsequent gestures should be targeted.
class VIEWS_EXPORT RootViewTargeter : public ViewTargeter {
RootViewTargeter(ViewTargeterDelegate* delegate,
internal::RootView* root_view);
~RootViewTargeter() override;
// ViewTargeter:
View* FindTargetForGestureEvent(View* root,
const ui::GestureEvent& gesture) override;
ui::EventTarget* FindNextBestTargetForGestureEvent(
ui::EventTarget* previous_target,
const ui::GestureEvent& gesture) override;
// A pointer to the RootView on which |this| is installed.
internal::RootView* root_view_;
} // namespace views