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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.
#include "mojo/services/view_manager/default_access_policy.h"
#include "mojo/services/view_manager/access_policy_delegate.h"
#include "mojo/services/view_manager/node.h"
namespace mojo {
namespace service {
DefaultAccessPolicy::DefaultAccessPolicy(ConnectionSpecificId connection_id,
AccessPolicyDelegate* delegate)
: connection_id_(connection_id),
delegate_(delegate) {
}
DefaultAccessPolicy::~DefaultAccessPolicy() {
}
bool DefaultAccessPolicy::CanRemoveNodeFromParent(const Node* node) const {
if (!WasCreatedByThisConnection(node))
return false; // Can only unparent nodes we created.
const Node* parent = node->GetParent();
return IsNodeInRoots(parent) || WasCreatedByThisConnection(parent);
}
bool DefaultAccessPolicy::CanAddNode(const Node* parent,
const Node* child) const {
return WasCreatedByThisConnection(child) &&
(IsNodeInRoots(parent) ||
(WasCreatedByThisConnection(parent) &&
!delegate_->IsNodeRootOfAnotherConnectionForAccessPolicy(parent)));
}
bool DefaultAccessPolicy::CanReorderNode(const Node* node,
const Node* relative_node,
OrderDirection direction) const {
return WasCreatedByThisConnection(node) &&
WasCreatedByThisConnection(relative_node);
}
bool DefaultAccessPolicy::CanDeleteNode(const Node* node) const {
return WasCreatedByThisConnection(node);
}
bool DefaultAccessPolicy::CanGetNodeTree(const Node* node) const {
return WasCreatedByThisConnection(node) || IsNodeInRoots(node);
}
bool DefaultAccessPolicy::CanDescendIntoNodeForNodeTree(
const Node* node) const {
return WasCreatedByThisConnection(node) &&
!delegate_->IsNodeRootOfAnotherConnectionForAccessPolicy(node);
}
bool DefaultAccessPolicy::CanEmbed(const Node* node) const {
return WasCreatedByThisConnection(node);
}
bool DefaultAccessPolicy::CanChangeNodeVisibility(const Node* node) const {
return WasCreatedByThisConnection(node) || IsNodeInRoots(node);
}
bool DefaultAccessPolicy::CanSetNodeContents(const Node* node) const {
// Once a node embeds another app, the embedder app is no longer able to
// call SetNodeContents() - this ability is transferred to the embedded app.
if (delegate_->IsNodeRootOfAnotherConnectionForAccessPolicy(node))
return false;
return WasCreatedByThisConnection(node) || IsNodeInRoots(node);
}
bool DefaultAccessPolicy::CanSetNodeBounds(const Node* node) const {
return WasCreatedByThisConnection(node);
}
bool DefaultAccessPolicy::ShouldNotifyOnHierarchyChange(
const Node* node,
const Node** new_parent,
const Node** old_parent) const {
if (!WasCreatedByThisConnection(node))
return false;
if (*new_parent && !WasCreatedByThisConnection(*new_parent) &&
!IsNodeInRoots(*new_parent)) {
*new_parent = NULL;
}
if (*old_parent && !WasCreatedByThisConnection(*old_parent) &&
!IsNodeInRoots(*old_parent)) {
*old_parent = NULL;
}
return true;
}
bool DefaultAccessPolicy::ShouldSendViewDeleted(const ViewId& view_id) const {
return view_id.connection_id == connection_id_;
}
bool DefaultAccessPolicy::IsNodeInRoots(const Node* node) const {
return delegate_->GetRootsForAccessPolicy().count(
NodeIdToTransportId(node->id())) > 0;
}
} // namespace service
} // namespace mojo
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