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// 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 UI_WM_CORE_VISIBILITY_CONTROLLER_H_
#define UI_WM_CORE_VISIBILITY_CONTROLLER_H_
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "ui/aura/client/visibility_client.h"
#include "ui/wm/wm_export.h"
namespace wm {
class WM_EXPORT VisibilityController
: public aura::client::VisibilityClient {
public:
VisibilityController();
~VisibilityController() override;
protected:
// Subclasses override if they want to call a different implementation of
// this function.
// TODO(beng): potentially replace by an actual window animator class in
// window_animations.h.
virtual bool CallAnimateOnChildWindowVisibilityChanged(aura::Window* window,
bool visible);
private:
// Overridden from aura::client::VisibilityClient:
void UpdateLayerVisibility(aura::Window* window, bool visible) override;
DISALLOW_COPY_AND_ASSIGN(VisibilityController);
};
// Suspends the animations for visibility changes during the lifetime of an
// instance of this class.
//
// Example:
//
// void ViewName::UnanimatedAction() {
// SuspendChildWindowVisibilityAnimations suspend(parent);
// // Perform unanimated action here.
// // ...
// // When the method finishes, visibility animations will return to their
// // previous state.
// }
//
class WM_EXPORT SuspendChildWindowVisibilityAnimations {
public:
// Suspend visibility animations of child windows.
explicit SuspendChildWindowVisibilityAnimations(aura::Window* window);
// Restore visibility animations to their original state.
~SuspendChildWindowVisibilityAnimations();
private:
// The window to manage.
aura::Window* window_;
// Whether the visibility animations on child windows were originally enabled.
const bool original_enabled_;
DISALLOW_COPY_AND_ASSIGN(SuspendChildWindowVisibilityAnimations);
};
// Tells |window| to animate visibility changes to its children.
void WM_EXPORT SetChildWindowVisibilityChangesAnimated(
aura::Window* window);
} // namespace wm
#endif // UI_WM_CORE_VISIBILITY_CONTROLLER_H_
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