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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 CONTENT_BROWSER_FONT_ACCESS_FONT_ACCESS_MANAGER_H_
#define CONTENT_BROWSER_FONT_ACCESS_FONT_ACCESS_MANAGER_H_
#include <map>
#include <memory>
#include <vector>
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/thread_annotations.h"
#include "base/threading/sequence_bound.h"
#include "base/types/pass_key.h"
#include "content/common/content_export.h"
#include "content/public/browser/global_routing_id.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "third_party/blink/public/mojom/font_access/font_access.mojom.h"
namespace content {
class FontEnumerationCache;
// The ownership hierarchy for this class is:
//
// StoragePartitionImpl (1) <- (1) FontAccessManager
//
// FontAccessManager (1) <- (*) BindingContext
//
// BindingContext (1) <- (1) GlobalRenderFrameHostId
//
// Legend:
//
// <- : owns
// <-- : corresponds to
// (N) : N is a number or *, which denotes zero or more
//
// In English:
// * There's one FontAccessManager per StoragePartitionImpl
// * Frames are bound to FontAccessManager via a BindingContext.
class CONTENT_EXPORT FontAccessManager
: public blink::mojom::FontAccessManager {
public:
// Factory method for production instances.
static std::unique_ptr<FontAccessManager> Create();
// Factory method with dependency injection support for testing.
static std::unique_ptr<FontAccessManager> CreateForTesting(
base::SequenceBound<FontEnumerationCache> font_enumeration_cache);
// The constructor is public for internal use of std::make_unique.
//
// Production code should call FontAccessManager::Create(). Testing code
// should call FontAccessManager::CreateForTesting().
FontAccessManager(
base::SequenceBound<FontEnumerationCache> font_enumeration_cache,
base::PassKey<FontAccessManager>);
FontAccessManager(const FontAccessManager&) = delete;
FontAccessManager& operator=(const FontAccessManager&) = delete;
~FontAccessManager() override;
void BindReceiver(
GlobalRenderFrameHostId frame_id,
mojo::PendingReceiver<blink::mojom::FontAccessManager> receiver);
// blink::mojom::FontAccessManager:
void EnumerateLocalFonts(EnumerateLocalFontsCallback callback) override;
void SkipPrivacyChecksForTesting(bool skip) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
skip_privacy_checks_for_testing_ = skip;
}
private:
struct BindingContext {
GlobalRenderFrameHostId frame_id;
};
void DidRequestPermission(EnumerateLocalFontsCallback callback,
blink::mojom::PermissionStatus status);
SEQUENCE_CHECKER(sequence_checker_);
base::SequenceBound<FontEnumerationCache> font_enumeration_cache_
GUARDED_BY_CONTEXT(sequence_checker_);
// Registered clients.
mojo::ReceiverSet<blink::mojom::FontAccessManager, BindingContext> receivers_
GUARDED_BY_CONTEXT(sequence_checker_);
const scoped_refptr<base::TaskRunner> results_task_runner_;
bool skip_privacy_checks_for_testing_ GUARDED_BY_CONTEXT(sequence_checker_) =
false;
base::WeakPtrFactory<FontAccessManager> weak_ptr_factory_
GUARDED_BY_CONTEXT(sequence_checker_){this};
};
} // namespace content
#endif // CONTENT_BROWSER_FONT_ACCESS_FONT_ACCESS_MANAGER_H_
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