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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_RENDERER_MESSAGE_TARGET_H_
#define EXTENSIONS_RENDERER_MESSAGE_TARGET_H_
#include <string>
#include "extensions/common/extension_id.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
namespace extensions {
// Represents a target of an extension message. This could be:
// 1. An Extension. Either an extension page is messaging another extension
// page (e.g., popup messaging background page), a content script is
// messaging an extension page, or a separate extension or web page is
// messaging an extension page. Any calls to chrome.runtime.connect() or
// chrome.runtime.sendMessage() target extensions.
// 2. A tab (i.e., a content script running in a web page). Any calls to
// chrome.tabs.connect() or chrome.tabs.sendMessage() target tabs.
// 3. A native application. An extension is using native messaging to
// communicate with a third-party application. Any calls to
// chrome.runtime.connectNative() or chrome.runtime.sendNativeMessage()
// target native applications.
struct MessageTarget {
enum Type {
TAB,
EXTENSION,
NATIVE_APP,
};
static MessageTarget ForTab(int tab_id, int frame_id);
static MessageTarget ForExtension(const ExtensionId& extension_id);
static MessageTarget ForNativeApp(const std::string& native_app_name);
MessageTarget(MessageTarget&& other);
MessageTarget(const MessageTarget& other);
~MessageTarget();
Type type;
// Only valid for Type::EXTENSION.
absl::optional<ExtensionId> extension_id;
// Only valid for Type::NATIVE_APP.
absl::optional<std::string> native_application_name;
// Only valid for Type::TAB.
absl::optional<int> tab_id;
absl::optional<int> frame_id;
bool operator==(const MessageTarget& other) const;
private:
MessageTarget(Type type);
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_MESSAGE_TARGET_H_
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