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{% from 'templates/macros.tmpl' import license, source_files_for_generated_file %}
{{license()}}
{{source_files_for_generated_file(template_file, input_files)}}
#ifndef {{header_guard}}
#define {{header_guard}}
#include "base/containers/flat_map.h"
#include "third_party/blink/public/common/common_export.h"
#include "third_party/blink/public/mojom/runtime_feature_state/runtime_feature.mojom-shared.h"
#include "third_party/blink/public/common/runtime_feature_state/runtime_feature_state_read_context.h"
namespace blink {
// This class, and its parent class, contain the feature states for blink
// runtime features which have opted in via the
// browser_process_read_write_access and browser_process_read_access parameters
// in runtime_enabled_features.json5. It collapses feature values from selected
// sources such as base::features, enterprise policy, and origin trial into a
// final value that browser and renderer processes can use.
//
// Specifically, this class allows for read/write access from the browser
// process prior to a page's navigation committing. Post navigation commit this
// class is changed to a RuntimeFeatureStateReadContext which is not mutable
// from the browser process but may receive updates from a renderer process for
// features which allow overrides from origin trials.
class BLINK_COMMON_EXPORT RuntimeFeatureStateContext
: public RuntimeFeatureStateReadContext {
public:
explicit RuntimeFeatureStateContext() { PopulateInitialValues(); }
// Note: The Is*Enabled() functions are defined in the parent class.
{% for feature in browser_write_access_features %}
void Set{{feature.name}}Enabled(bool enabled) {
return SetIsEnabled(
blink::mojom::RuntimeFeature::k{{feature.name}},
enabled);
}
{% endfor %}
private:
void PopulateInitialValues();
void SetIsEnabled(blink::mojom::RuntimeFeature feature, bool enabled) {
feature_overrides_[feature] = enabled;
}
};
} // namespace blink
#endif // {{header_guard}}
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