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// Copyright 2014 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 MOJO_SERVICES_VIEW_MANAGER_ACCESS_POLICY_H_
#define MOJO_SERVICES_VIEW_MANAGER_ACCESS_POLICY_H_
#include "mojo/services/public/interfaces/view_manager/view_manager_constants.mojom.h"
#include "mojo/services/view_manager/ids.h"
namespace mojo {
namespace service {
class Node;
class View;
// AccessPolicy is used by ViewManagerServiceImpl to determine what a connection
// is allowed to do.
class AccessPolicy {
public:
virtual ~AccessPolicy() {}
// Unless otherwise mentioned all arguments have been validated. That is the
// |node| and/or |view| arguments are non-null unless otherwise stated (eg
// CanSetView() is allowed to take a NULL view).
virtual bool CanRemoveNodeFromParent(const Node* node) const = 0;
virtual bool CanAddNode(const Node* parent, const Node* child) const = 0;
virtual bool CanReorderNode(const Node* node,
const Node* relative_node,
OrderDirection direction) const = 0;
virtual bool CanDeleteNode(const Node* node) const = 0;
virtual bool CanGetNodeTree(const Node* node) const = 0;
// Used when building a node tree (GetNodeTree()) to decide if we should
// descend into |node|.
virtual bool CanDescendIntoNodeForNodeTree(const Node* node) const = 0;
virtual bool CanEmbed(const Node* node) const = 0;
virtual bool CanChangeNodeVisibility(const Node* node) const = 0;
virtual bool CanSetNodeContents(const Node* node) const = 0;
virtual bool CanSetNodeBounds(const Node* node) const = 0;
// Returns whether the connection should notify on a hierarchy change.
// |new_parent| and |old_parent| are initially set to the new and old parents
// but may be altered so that the client only sees a certain set of nodes.
virtual bool ShouldNotifyOnHierarchyChange(
const Node* node,
const Node** new_parent,
const Node** old_parent) const = 0;
virtual bool ShouldSendViewDeleted(const ViewId& view_id) const = 0;
};
} // namespace service
} // namespace mojo
#endif // MOJO_SERVICES_VIEW_MANAGER_ACCESS_POLICY_H_
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