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// Copyright 2018 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_AURA_MUS_EMBED_ROOT_H_
#define UI_AURA_MUS_EMBED_ROOT_H_
#include <memory>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/unguessable_token.h"
#include "services/ui/common/types.h"
#include "ui/aura/aura_export.h"
namespace aura {
class EmbedRootDelegate;
class Window;
class WindowTreeClient;
class WindowTreeHost;
namespace client {
class FocusClient;
}
// EmbedRoot represents a secondary embedding from the perspective of the
// embedded client. More specifically an EmbedRoot allows a remote client to
// embed this client in one of the remote client's Windows.
//
// See EmbedRootDelegate for details on how to use.
//
// EmbedRoot is created by way of WindowTreeClient::CreateEmbedRoot().
class AURA_EXPORT EmbedRoot {
public:
~EmbedRoot();
// Token for the embedding. Empty until OnEmbedTokenAvailable() is called on
// the delegate.
const base::UnguessableToken& token() const { return token_; }
// Window for the embedding, null until the OnEmbed() is called on the
// delegate.
aura::Window* window();
private:
friend class WindowTreeClient;
friend class WindowTreeClientPrivate;
EmbedRoot(WindowTreeClient* window_tree_client,
EmbedRootDelegate* delegate,
ui::ClientSpecificId window_id);
// Callback from WindowTreeClient once the token has been determined.
void OnScheduledEmbedForExistingClient(const base::UnguessableToken& token);
// Called from WindowTreeClient when the embedding is established.
void OnEmbed(std::unique_ptr<WindowTreeHost> window_tree_host);
// Called from WindowTreeClient when unembedded from the Window.
void OnUnembed();
WindowTreeClient* window_tree_client_;
EmbedRootDelegate* delegate_;
base::UnguessableToken token_;
std::unique_ptr<client::FocusClient> focus_client_;
std::unique_ptr<WindowTreeHost> window_tree_host_;
base::WeakPtrFactory<EmbedRoot> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(EmbedRoot);
};
} // namespace aura
#endif // UI_AURA_MUS_EMBED_ROOT_H_
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