# Namespace OptimaJet.Workflow.Core.Designer

## Classes

-   [DesignerRequest](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/DesignerRequest/)
    
    Contains request data passed to [IDesignerAction.ExecuteDesignerApi(DesignerRequest)](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/IDesignerAction/) for a named Designer extension operation.
    
-   [DesignerResponse](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/DesignerResponse/)
    
    Encapsulates the result of a Workflow Designer action and indicates whether the response contains an error.
    
-   [NewtonsoftDefaultValueJsonConverter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/NewtonsoftDefaultValueJsonConverter/)
    
    Provides a JsonConverter that converts [CodeActionParameterDefinition.DefaultValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionParameterDefinition/) between its string representation and JSON values.
    
-   [NewtonsoftStringTypeConverter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/NewtonsoftStringTypeConverter/)
    
    Provides a JsonConverter that serializes and deserializes [Type](https://learn.microsoft.com/dotnet/api/system.type) values as URL-encoded friendly type names.
    
-   [ParsedType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/ParsedType/)
    
    Represents the parsed components of a CLR [Type](https://learn.microsoft.com/dotnet/api/system.type) name, including generic arguments, array ranks, and nullable value-type syntax.
    
-   [ParsedType.ArrayDimension](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/ParsedType.ArrayDimension/)
    
    Represents an array specifier and its rank within a [ParsedType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/ParsedType/).
    
-   [ProcessDisplayedState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/ProcessDisplayedState/)
    
    Represents the state of a process displayed in the designer.
    
-   [ProcessDisplayedStateGenerator](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/ProcessDisplayedStateGenerator/)
    
    Generates [ProcessTreeDisplayedState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/ProcessTreeDisplayedState/) objects for displaying processes and their subprocesses in the designer.
    
-   [ProcessTreeDisplayedState](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/ProcessTreeDisplayedState/)
    
    Represents the displayed state of a process and its descendant subprocesses in the designer.
    
-   [SystemStringEnumConverter<T>](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/SystemStringEnumConverter-T/)
    
    Converts JSON strings to and from enumeration values of type `T`. Deserialization parses enumeration names without regard to case, while serialization uses [Enum.ToString()](https://learn.microsoft.com/dotnet/api/system.enum.tostring#system-enum-tostring).
    
-   [SystemTextDefaultValueJsonConverter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/SystemTextDefaultValueJsonConverter/)
    
    Provides a [JsonConverter<T>](https://learn.microsoft.com/dotnet/api/system.text.json.serialization.jsonconverter-1) that converts [CodeActionParameterDefinition.DefaultValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionParameterDefinition/) between its string representation and JSON values.
    
-   [SystemTextStringTypeConverter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/SystemTextStringTypeConverter/)
    
    Provides a [JsonConverter<T>](https://learn.microsoft.com/dotnet/api/system.text.json.serialization.jsonconverter-1) that serializes [Type](https://learn.microsoft.com/dotnet/api/system.type) values as URL-encoded names produced by [ParsedType.GetFriendlyName(Type)](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/ParsedType/) and deserializes those names.
    

## Interfaces

-   [IDesignerAction](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/IDesignerAction/)
    
    Defines a handler for a custom Workflow Designer operation registered through [WorkflowRuntime.RegisterDesignerAction(string, IDesignerAction)](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime/WorkflowRuntime/).
    

## Enums

-   [Operations](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/Operations/)
    
    Defines the built-in operation names accepted by [Designer.DesignerAPI(WorkflowRuntime, NameValueCollection, out bool, Stream, bool)](https://api.workflowengine.io/core/OptimaJet.Workflow/Designer/) and [Designer.DesignerAPIAsync(WorkflowRuntime, NameValueCollection, Stream, bool)](https://api.workflowengine.io/core/OptimaJet.Workflow/Designer/).
    
-   [RequestElements](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/RequestElements/)
    
    Defines the standard request element names read by [Designer.DesignerAPI(WorkflowRuntime, NameValueCollection, out bool, Stream, bool)](https://api.workflowengine.io/core/OptimaJet.Workflow/Designer/) and [Designer.DesignerAPIAsync(WorkflowRuntime, NameValueCollection, Stream, bool)](https://api.workflowengine.io/core/OptimaJet.Workflow/Designer/).