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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 COMPONENTS_PAINT_PREVIEW_BROWSER_PAINT_PREVIEW_FILE_MIXIN_H_
#define COMPONENTS_PAINT_PREVIEW_BROWSER_PAINT_PREVIEW_FILE_MIXIN_H_
#include <optional>
#include <string_view>
#include "base/files/file_path.h"
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "base/task/sequenced_task_runner.h"
#include "components/keyed_service/core/keyed_service.h"
#include "components/paint_preview/browser/file_manager.h"
#include "ui/accessibility/ax_tree_update.h"
namespace paint_preview {
class PaintPreviewFileMixin {
public:
enum class ProtoReadStatus : int {
kOk = 0,
kNoProto,
kDeserializationError,
kExpired,
};
using OnReadProtoCallback =
base::OnceCallback<void(ProtoReadStatus,
std::unique_ptr<PaintPreviewProto>)>;
using OnReadAXTree =
base::OnceCallback<void(std::unique_ptr<ui::AXTreeUpdate>)>;
// Creates an instance for a profile. FileManager's root directory will be set
// to |profile_dir|/paint_preview/|ascii_feature_name|.
PaintPreviewFileMixin(const base::FilePath& profile_dir,
std::string_view ascii_feature_name);
PaintPreviewFileMixin(const PaintPreviewFileMixin&) = delete;
PaintPreviewFileMixin& operator=(const PaintPreviewFileMixin&) = delete;
virtual ~PaintPreviewFileMixin();
// Returns the file manager for the directory associated with the profile.
scoped_refptr<FileManager> GetFileManager() { return file_manager_; }
// Returns the task runner that IO tasks should be scheduled on.
scoped_refptr<base::SequencedTaskRunner> GetTaskRunner() {
return task_runner_;
}
base::WeakPtr<PaintPreviewFileMixin> GetWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
// Acquires the PaintPreviewProto that is associated with |key| and sends it
// to |on_read_proto_callback|. The default implementation attempts to invoke
// GetFileManager()->DeserializePaintPreviewProto(). If |expiry_horizon| is
// provided a proto that was last modified earlier than 'now - expiry_horizon'
// will return the kExpired status.
virtual void GetCapturedPaintPreviewProto(
const DirectoryKey& key,
std::optional<base::TimeDelta> expiry_horizon,
OnReadProtoCallback on_read_proto_callback);
// Writes an Accessibility Tree snapshot to the directory listed in key.
void WriteAXTreeUpdate(const DirectoryKey& key,
base::OnceCallback<void(bool)> finished_callback,
ui::AXTreeUpdate& ax_tree_update);
// Gets an Accessibility Tree snapshot for key.
void GetAXTreeUpdate(const DirectoryKey& key, OnReadAXTree callback);
private:
scoped_refptr<base::SequencedTaskRunner> task_runner_;
scoped_refptr<FileManager> file_manager_;
base::WeakPtrFactory<PaintPreviewFileMixin> weak_ptr_factory_{this};
};
} // namespace paint_preview
#endif // COMPONENTS_PAINT_PREVIEW_BROWSER_PAINT_PREVIEW_FILE_MIXIN_H_
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