API Reference > presentation-frontend > Core > PresentationManager PresentationManager Class Frontend Presentation manager which basically just forwards all calls to the backend implementation. Implements IDisposable Methods Name Description compareHierarchies(props: HierarchyCompareOptions<IModelConnection, NodeKey, RulesetVariable>): Promise<PartialHierarchyModification[]> Compare two hierarchies. dispose(): void getContent(requestOptions: Paged<ExtendedContentRequestOptions<IModelConnection, Descriptor, KeySet, RulesetVariable>>): Promise<undefined | Content> getContent(requestOptions: Paged<ContentRequestOptions<IModelConnection, RulesetVariable>>, descriptorOrOverrides: Descriptor | DescriptorOverrides, keys: KeySet): Promise<undefined | Content> Retrieves the content based on the supplied content descriptor override. Deprecated getContentAndSize(requestOptions: Paged<ExtendedContentRequestOptions<IModelConnection, Descriptor, KeySet, RulesetVariable>>): Promise<undefined | { content: Content, size: number }> getContentAndSize(requestOptions: Paged<ContentRequestOptions<IModelConnection, RulesetVariable>>, descriptorOrOverrides: Descriptor | DescriptorOverrides, keys: KeySet): Promise<undefined | { content: Content, size: number }> Retrieves the content and content set size based on the supplied content descriptor override. Deprecated getContentDescriptor(requestOptions: ContentDescriptorRequestOptions<IModelConnection, KeySet, RulesetVariable>): Promise<undefined | Descriptor> getContentDescriptor(requestOptions: ContentRequestOptions<IModelConnection, RulesetVariable>, displayType: string, keys: KeySet, selection: undefined | SelectionInfo): Promise<undefined | Descriptor> Retrieves the content descriptor which describes the content and can be used to customize it. Deprecated getContentSetSize(requestOptions: ExtendedContentRequestOptions<IModelConnection, Descriptor, KeySet, RulesetVariable>): Promise<number> getContentSetSize(requestOptions: ContentRequestOptions<IModelConnection, RulesetVariable>, descriptorOrOverrides: Descriptor | DescriptorOverrides, keys: KeySet): Promise<number> Retrieves content set size based on the supplied content descriptor override. Deprecated getDisplayLabelDefinition(requestOptions: DisplayLabelRequestOptions<IModelConnection, InstanceKey>): Promise<LabelDefinition> getDisplayLabelDefinition(requestOptions: LabelRequestOptions<IModelConnection>, key: InstanceKey): Promise<LabelDefinition> Retrieves display label definition of specific item Deprecated getDisplayLabelDefinitions(requestOptions: DisplayLabelsRequestOptions<IModelConnection, InstanceKey>): Promise<LabelDefinition[]> getDisplayLabelDefinitions(requestOptions: LabelRequestOptions<IModelConnection>, keys: InstanceKey[]): Promise<LabelDefinition[]> Retrieves display label definition of specific items Deprecated getDistinctValues(requestOptions: ContentRequestOptions<IModelConnection, RulesetVariable>, descriptorOrOverrides: Descriptor | DescriptorOverrides, keys: KeySet, fieldName: string, maximumValueCount: number = 0): Promise<string[]> Retrieves distinct values of specific field from the content based on the supplied content descriptor override. Deprecated getElementProperties(requestOptions: ElementPropertiesRequestOptions<IModelConnection>): Promise<undefined | ElementProperties> Retrieves property data in a simplified format for a single element specified by ID. Beta getFilteredNodePaths(requestOptions: ExtendedHierarchyRequestOptions<IModelConnection, never, RulesetVariable>, filterText: string): Promise<NodePathElement[]> Retrieves paths from root nodes to nodes containing filter text in their label. getNodePaths(requestOptions: ExtendedHierarchyRequestOptions<IModelConnection, never, RulesetVariable>, paths: InstanceKey[][], markedIndex: number): Promise<NodePathElement[]> Retrieves paths from root nodes to children nodes according to specified keys. getNodes(requestOptions: Paged<ExtendedHierarchyRequestOptions<IModelConnection, NodeKey, RulesetVariable>>): Promise<Node[]> Retrieves nodes getNodes(requestOptions: Paged<HierarchyRequestOptions<IModelConnection, RulesetVariable>>, parentKey: undefined | NodeKey): Promise<Node[]> Retrieves nodes Deprecated getNodesAndCount(requestOptions: Paged<ExtendedHierarchyRequestOptions<IModelConnection, NodeKey, RulesetVariable>>): Promise<{ count: number, nodes: Node[] }> Retrieves total nodes count and a single page of nodes. getNodesAndCount(requestOptions: Paged<HierarchyRequestOptions<IModelConnection, RulesetVariable>>, parentKey: undefined | NodeKey): Promise<{ count: number, nodes: Node[] }> Retrieves total nodes count and a single page of nodes. Deprecated getNodesCount(requestOptions: ExtendedHierarchyRequestOptions<IModelConnection, NodeKey, RulesetVariable>): Promise<number> Retrieves nodes count. getNodesCount(requestOptions: HierarchyRequestOptions<IModelConnection, RulesetVariable>, parentKey: undefined | NodeKey): Promise<number> Retrieves nodes count. Deprecated getPagedDistinctValues(requestOptions: DistinctValuesRequestOptions<IModelConnection, Descriptor, KeySet, RulesetVariable>): Promise<PagedResponse<DisplayValueGroup>> Retrieves distinct values of specific field from the content based on the supplied content descriptor override. rulesets(): RulesetManager Get rulesets manager vars(rulesetId: string): RulesetVariablesManager Get ruleset variables manager for specific ruleset create(props?: PresentationManagerProps): PresentationManager Static Create a new PresentationManager instance Properties Name Type Description activeLocale undefined | string Get / set active locale used for localizing presentation data activeUnitSystem undefined | PresentationUnitSystem Get / set active unit system used to format property values with units Defined in presentation/frontend/src/presentation-frontend/PresentationManager.ts Line 100 Last Updated: 29 November, 2022