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// Copyright 2013 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_COMMON_PERMISSIONS_PERMISSION_MESSAGE_PROVIDER_H_
#define EXTENSIONS_COMMON_PERMISSIONS_PERMISSION_MESSAGE_PROVIDER_H_
#include <vector>
#include "extensions/common/manifest.h"
#include "extensions/common/permissions/permission_message.h"
namespace extensions {
class PermissionIDSet;
class PermissionSet;
// The PermissionMessageProvider interprets permissions, translating them
// into warning messages to show to the user. It also determines whether
// a new set of permissions entails showing new warning messages.
class PermissionMessageProvider {
public:
PermissionMessageProvider() {}
virtual ~PermissionMessageProvider() {}
// Return the global permission message provider.
static const PermissionMessageProvider* Get();
// Calculates and returns the full list of permission messages for the given
// |permissions|. This involves converting the given PermissionIDs into
// localized messages, as well as coalescing and parameterizing any messages
// that require the permission ID's argument in their message.
virtual PermissionMessages GetPermissionMessages(
const PermissionIDSet& permissions) const = 0;
// Returns true if |new_permissions| has a greater privilege level than
// |old_permissions|.
// Whether certain permissions are considered varies by extension type.
// TODO(sashab): Add an implementation of this method that uses
// PermissionIDSet instead, then deprecate this one.
virtual bool IsPrivilegeIncrease(const PermissionSet& old_permissions,
const PermissionSet& new_permissions,
Manifest::Type extension_type) const = 0;
// Given the permissions for an extension, finds the IDs of all the
// permissions for that extension (including API, manifest and host
// permissions).
// TODO(sashab): This uses the legacy PermissionSet type. Deprecate or rename
// this type, and make this take as little as is needed to work out the
// PermissionIDSet.
virtual PermissionIDSet GetAllPermissionIDs(
const PermissionSet& permissions,
Manifest::Type extension_type) const = 0;
};
} // namespace extensions
#endif // EXTENSIONS_COMMON_PERMISSIONS_PERMISSION_MESSAGE_PROVIDER_H_
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