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// Copyright (c) 2012 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 CHROME_COMMON_EXTENSIONS_PERMISSIONS_MEDIA_GALLERIES_PERMISSION_H_
#define CHROME_COMMON_EXTENSIONS_PERMISSIONS_MEDIA_GALLERIES_PERMISSION_H_
#include <set>
#include <string>
#include "chrome/common/extensions/permissions/api_permission.h"
namespace base {
class Value;
}
namespace IPC {
class Message;
}
namespace extensions {
class Extension;
// There's room to share code with related classes, see http://crbug.com/147531
// There are two kinds of media galleries permissions, location permissions
// and access type permissions.
//
// The default location permission (no permission parameter) does not grant
// access to any galleries, but lets the user grant access on a per gallery
// basis. The other location permission "all-auto-detected" gives the user
// access to all auto detected galleries. This includes per platform default
// galleries and removable devices that are detected as media devices.
//
// Access type will include several different types in the future, but right
// now we only have one access type, "read." Future access types may include
// "write," "delete," and "add-file."
//
// <media galleries permissions>
// := 'all-auto-detected' | 'read' | <media galleries permissions>
class MediaGalleriesPermission : public APIPermission {
public:
enum PermissionTypes {
kNone = 0,
kAllAutoDetected,
kRead,
};
struct CheckParam : APIPermission::CheckParam {
explicit CheckParam(PermissionTypes permission) : permission(permission) {
}
PermissionTypes permission;
};
explicit MediaGalleriesPermission(const APIPermissionInfo* info);
virtual ~MediaGalleriesPermission();
// Returns true if the passed |extension| has the read permission parameter.
static bool HasReadAccess(const Extension& extension);
// Returns true if the passed |extension| has the all galleries permission
// parameter.
static bool HasAllGalleriesAccess(const Extension& extension);
// Converts a string to a PermissionType. Return kNone for an unrecognized
// input.
static PermissionTypes PermissionStringToType(const std::string& str);
// Converts a PermissionType to a string.
static const char* PermissionTypeToString(PermissionTypes type);
// Returns true if this permission has PermissionMessages.
virtual bool HasMessages() const OVERRIDE;
// Returns the localized permission messages of this permission.
virtual PermissionMessages GetMessages() const OVERRIDE;
// Returns true if the given permission in param is allowed.
virtual bool Check(
const APIPermission::CheckParam* param) const OVERRIDE;
// Returns true if |rhs| is a subset of this.
virtual bool Contains(const APIPermission* rhs) const OVERRIDE;
// Returns true if |rhs| is equal to this.
virtual bool Equal(const APIPermission* rhs) const OVERRIDE;
// Parses the rhs from |value|. Returns false if error happens.
virtual bool FromValue(const base::Value* value) OVERRIDE;
// Stores this into a new created |value|.
virtual void ToValue(base::Value** value) const OVERRIDE;
// Clones this.
virtual APIPermission* Clone() const OVERRIDE;
// Returns a new API permission rhs which equals this - |rhs|.
virtual APIPermission* Diff(const APIPermission* rhs) const OVERRIDE;
// Returns a new API permission rhs which equals the union of this and
// |rhs|.
virtual APIPermission* Union(const APIPermission* rhs) const OVERRIDE;
// Returns a new API permission rhs which equals the intersect of this and
// |rhs|.
virtual APIPermission* Intersect(const APIPermission* rhs) const OVERRIDE;
// IPC functions
// Writes this into the given IPC message |m|.
virtual void Write(IPC::Message* m) const OVERRIDE;
// Reads from the given IPC message |m|.
virtual bool Read(const IPC::Message* m, PickleIterator* iter) OVERRIDE;
// Logs this rhs.
virtual void Log(std::string* log) const OVERRIDE;
private:
std::set<PermissionTypes> permissions_;
};
} // namespace extensions
#endif // CHROME_COMMON_EXTENSIONS_PERMISSIONS_MEDIA_GALLERIES_PERMISSION_H_
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