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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_DOM_DISTILLER_CORE_DOM_DISTILLER_SERVICE_H_
#define COMPONENTS_DOM_DISTILLER_CORE_DOM_DISTILLER_SERVICE_H_
#include <memory>
#include <vector>
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "components/dom_distiller/core/article_entry.h"
#include "components/dom_distiller/core/distilled_page_prefs.h"
#include "components/dom_distiller/core/distiller_page.h"
#include "components/dom_distiller/core/distiller_ui_handle.h"
class GURL;
namespace dom_distiller {
class DistilledContentStore;
class DistillerFactory;
class DistillerPageFactory;
class TaskTracker;
class ViewerHandle;
class ViewRequestDelegate;
// Service for interacting with the Dom Distiller.
// Construction, destruction, and usage of this service must happen on the same
// thread. Callbacks will be called on that same thread.
class DomDistillerServiceInterface {
public:
virtual ~DomDistillerServiceInterface() = default;
// Request to view an article by url.
// Use CreateDefaultDistillerPage() to create a default |distiller_page|.
// The provided |distiller_page| is only used if there is not already a
// distillation task in progress for the given |url|.
virtual std::unique_ptr<ViewerHandle> ViewUrl(
ViewRequestDelegate* delegate,
std::unique_ptr<DistillerPage> distiller_page,
const GURL& url) = 0;
// Creates a default DistillerPage.
virtual std::unique_ptr<DistillerPage> CreateDefaultDistillerPage(
const gfx::Size& render_view_size) = 0;
virtual std::unique_ptr<DistillerPage> CreateDefaultDistillerPageWithHandle(
std::unique_ptr<SourcePageHandle> handle) = 0;
// Returns the DistilledPagePrefs owned by the instance of
// DomDistillerService.
virtual DistilledPagePrefs* GetDistilledPagePrefs() = 0;
// Returns the DistillerUIHandle owned by the instance of
// DomDistillerService.
virtual DistillerUIHandle* GetDistillerUIHandle() = 0;
DomDistillerServiceInterface(const DomDistillerServiceInterface&) = delete;
DomDistillerServiceInterface& operator=(const DomDistillerServiceInterface&) =
delete;
protected:
DomDistillerServiceInterface() = default;
};
// Provide a view of the article list and ways of interacting with it.
class DomDistillerService : public DomDistillerServiceInterface {
public:
DomDistillerService(
std::unique_ptr<DistillerFactory> distiller_factory,
std::unique_ptr<DistillerPageFactory> distiller_page_factory,
std::unique_ptr<DistilledPagePrefs> distilled_page_prefs,
std::unique_ptr<DistillerUIHandle> distiller_ui_handle);
~DomDistillerService() override;
// DomDistillerServiceInterface implementation.
std::unique_ptr<ViewerHandle> ViewUrl(
ViewRequestDelegate* delegate,
std::unique_ptr<DistillerPage> distiller_page,
const GURL& url) override;
std::unique_ptr<DistillerPage> CreateDefaultDistillerPage(
const gfx::Size& render_view_size) override;
std::unique_ptr<DistillerPage> CreateDefaultDistillerPageWithHandle(
std::unique_ptr<SourcePageHandle> handle) override;
DistilledPagePrefs* GetDistilledPagePrefs() override;
DistillerUIHandle* GetDistillerUIHandle() override;
base::WeakPtr<DomDistillerService> GetWeakPtr();
bool HasTaskTrackerForTesting(const GURL& url) const;
private:
void CancelTask(TaskTracker* task);
TaskTracker* CreateTaskTracker(const ArticleEntry& entry);
TaskTracker* GetTaskTrackerForUrl(const GURL& url) const;
// Gets the task tracker for the given |url|. If no appropriate
// tracker exists, this will create one and put it in the |TaskTracker|
// parameter passed into this function, initialize it, and add it to
// |tasks_|. Return whether a |TaskTracker| needed to be created.
bool GetOrCreateTaskTrackerForUrl(const GURL& url,
TaskTracker** task_tracker);
std::unique_ptr<DistilledContentStore> content_store_;
std::unique_ptr<DistillerFactory> distiller_factory_;
std::unique_ptr<DistillerPageFactory> distiller_page_factory_;
std::unique_ptr<DistilledPagePrefs> distilled_page_prefs_;
// An object for accessing chrome-specific UI controls including external
// feedback and opening the distiller settings.
std::unique_ptr<DistillerUIHandle> distiller_ui_handle_;
typedef std::vector<std::unique_ptr<TaskTracker>> TaskList;
TaskList tasks_;
base::WeakPtrFactory<DomDistillerService> weak_ptr_factory_;
};
} // namespace dom_distiller
#endif // COMPONENTS_DOM_DISTILLER_CORE_DOM_DISTILLER_SERVICE_H_
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