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// 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.
#ifndef EXTENSIONS_BROWSER_MOJO_STASH_BACKEND_H_
#define EXTENSIONS_BROWSER_MOJO_STASH_BACKEND_H_
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "extensions/common/mojo/stash.mojom.h"
#include "mojo/public/cpp/bindings/interface_request.h"
namespace extensions {
// A backend that provides access to StashService for a single extension.
class StashBackend {
public:
explicit StashBackend(const base::Closure& on_handle_readable);
~StashBackend();
// Creates a StashService that forwards calls to this StashBackend and bind it
// to |request|.
void BindToRequest(mojo::InterfaceRequest<StashService> request);
// Adds the StashedObjects contained within |stash| to the stash.
void AddToStash(mojo::Array<StashedObjectPtr> stash);
// Returns all StashedObjects added to the stash since the last call to
// RetrieveStash.
mojo::Array<StashedObjectPtr> RetrieveStash();
private:
class StashEntry;
// Invoked when a handle is readable.
void OnHandleReady();
// The objects that have been stashed.
std::vector<scoped_ptr<StashEntry>> stashed_objects_;
// The callback to call when a handle is readable.
const base::Closure on_handle_readable_;
// Whether a handle has become readable since the last RetrieveStash() call.
bool has_notified_;
base::WeakPtrFactory<StashBackend> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(StashBackend);
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_MOJO_STASH_BACKEND_H_
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