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// Copyright 2022 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_FUCHSIA_COMPONENT_SUPPORT_ANNOTATIONS_MANAGER_H_
#define COMPONENTS_FUCHSIA_COMPONENT_SUPPORT_ANNOTATIONS_MANAGER_H_
#include <fuchsia/element/cpp/fidl.h>
#include <lib/fidl/cpp/binding_set.h>
#include <memory>
#include <string_view>
#include <vector>
#include "base/containers/flat_map.h"
namespace fuchsia_component_support {
// Constructs an Annotation with the specified `value` set, either directly
// as `text`, or in a VMO `buffer`, depending on its size.
fuchsia::element::Annotation MakeAnnotation(std::string_view key,
std::string_view value);
// Helper functions for constructing numeric and boolean annotations.
fuchsia::element::Annotation MakeBoolAnnotation(std::string_view key,
bool value);
fuchsia::element::Annotation MakeIntAnnotation(std::string_view key, int value);
struct AnnotationKeyCompare {
bool operator()(const fuchsia::element::AnnotationKey& key1,
const fuchsia::element::AnnotationKey& key2) const;
};
// Manages annotations associated with a session Element, or View.
class AnnotationsManager {
public:
AnnotationsManager();
~AnnotationsManager();
// Sets, updates, or deletes one or more Annotations.
// Returns false if the supplied inputs are invalid according to the
// `fuchsia.element.AnnotationController.UpdateAnnotations()` API
// specification, e.g. if `to_update` contains duplicate entries.
bool UpdateAnnotations(
std::vector<fuchsia::element::Annotation> to_set,
std::vector<fuchsia::element::AnnotationKey> to_delete = {});
// Returns a copy of the current set of Annotations.
std::vector<fuchsia::element::Annotation> GetAnnotations() const;
// Connects a new `AnnotationController` client to this manager.
void Connect(
fidl::InterfaceRequest<fuchsia::element::AnnotationController> request);
private:
class ControllerImpl;
// Holds all currently-active annotations.
base::flat_map<fuchsia::element::AnnotationKey,
fuchsia::element::AnnotationValue,
AnnotationKeyCompare>
annotations_;
// Bindings to active clients of this instance.
fidl::BindingSet<fuchsia::element::AnnotationController,
std::unique_ptr<ControllerImpl>>
bindings_;
};
} // namespace fuchsia_component_support
#endif // COMPONENTS_FUCHSIA_COMPONENT_SUPPORT_ANNOTATIONS_MANAGER_H_
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