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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_ASH_CLIPBOARD_CLIPBOARD_IMAGE_MODEL_FACTORY_IMPL_H_
#define CHROME_BROWSER_UI_ASH_CLIPBOARD_CLIPBOARD_IMAGE_MODEL_FACTORY_IMPL_H_
#include <list>
#include <memory>
#include <string>
#include "ash/public/cpp/clipboard_image_model_factory.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/timer/timer.h"
#include "base/unguessable_token.h"
#include "chrome/browser/ui/ash/clipboard/clipboard_image_model_request.h"
// Implements the singleton ClipboardImageModelFactory.
class ClipboardImageModelFactoryImpl : public ash::ClipboardImageModelFactory {
public:
ClipboardImageModelFactoryImpl();
ClipboardImageModelFactoryImpl(ClipboardImageModelFactoryImpl&) = delete;
ClipboardImageModelFactoryImpl& operator=(ClipboardImageModelFactoryImpl&) =
delete;
~ClipboardImageModelFactoryImpl() override;
private:
// ash::ClipboardImageModelFactory:
void Render(const base::UnguessableToken& id,
const std::string& html_markup,
const gfx::Size& bounding_box_size,
ImageModelCallback callback) override;
void CancelRequest(const base::UnguessableToken& id) override;
void Activate() override;
void Deactivate() override;
void RenderCurrentPendingRequests() override;
void OnShutdown() override;
// Starts the first request in |pending_list_|.
void StartNextRequest();
// Called when |request_| has been idle for 2 minutes, to clean up resources.
void OnRequestIdle();
// Whether ClipboardImageModelFactoryImpl is activated. If not, requests are
// queued until Activate().
bool active_ = false;
// Whether ClipboardImageModelFactoryImpl will render all requests until the
// |pending_list_| is empty. When true, all requests will be rendered
// regardless of |active_|.
bool active_until_empty_ = false;
// Requests which are waiting to be run.
std::list<ClipboardImageModelRequest::Params> pending_list_;
// The active request. Expensive to keep in memory and expensive to create,
// deleted OnRequestIdle.
std::unique_ptr<ClipboardImageModelRequest> request_;
// Timer used to clean up |request_| if it is not used for 2 minutes.
base::DelayTimer idle_timer_;
base::WeakPtrFactory<ClipboardImageModelFactoryImpl> weak_ptr_factory_{this};
};
#endif // CHROME_BROWSER_UI_ASH_CLIPBOARD_CLIPBOARD_IMAGE_MODEL_FACTORY_IMPL_H_
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