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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_COMMON_EVENT_MATCHER_H_
#define EXTENSIONS_COMMON_EVENT_MATCHER_H_
#include <memory>
#include "base/values.h"
#include "extensions/common/mojom/event_dispatcher.mojom-forward.h"
namespace extensions {
extern const char kEventFilterServiceTypeKey[];
// Matches EventFilteringInfos against a set of criteria. This is intended to
// be used by EventFilter which performs efficient URL matching across
// potentially many EventMatchers itself. This is why this class only exposes
// MatchNonURLCriteria() - URL matching is handled by EventFilter.
class EventMatcher {
public:
EventMatcher(std::unique_ptr<base::Value::Dict> filter, int routing_id);
EventMatcher(const EventMatcher&) = delete;
EventMatcher& operator=(const EventMatcher&) = delete;
~EventMatcher();
// Returns true if `event_info` satisfies this matcher's criteria, not taking
// into consideration any URL criteria.
bool MatchNonURLCriteria(const mojom::EventFilteringInfo& event_info) const;
// Retrieves the number of specified URL filters.
int GetURLFilterCount() const;
// Retrieves the URL filter at the index `i`.
const base::Value::Dict* GetURLFilter(int i);
// Returns true if there are any specified URL filters.
bool HasURLFilters() const;
base::Value::Dict* value() const { return filter_.get(); }
int routing_id() const { return routing_id_; }
private:
// Returns the number of specified window types in the filter.
int GetWindowTypeCount() const;
// Populates `window_type_out` with the window type at index `i`,
// return true if successful.
bool GetWindowType(int i, std::string* window_type_out) const;
// Returns the filter for service type, if one exists. Otherwise, returns
// an empty string.
std::string GetServiceTypeFilter() const;
// Returns the specified instance ID in the filter, or 0 if none was
// specified.
int GetInstanceID() const;
// Contains a dictionary that corresponds to a single event filter, eg:
//
// {url: [{hostSuffix: 'google.com'}]}
//
// The valid filter keys are event-specific.
const std::unique_ptr<base::Value::Dict> filter_;
const int routing_id_;
};
} // namespace extensions
#endif // EXTENSIONS_COMMON_EVENT_MATCHER_H_
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