NDocument Class

In This Topic

The NDocument class is a component, which implements core DOM document features and serves as base class for all types of diagram documents

Object Model

Syntax

Visual Basic
C#

'Declaration
 
<System.Xml.Serialization.XmlIncludeAttribute(Nevron.Diagram.NDrawingDocument)>
<System.ComponentModel.DesignerCategoryAttribute("Component")>
<System.SerializableAttribute()>
Public MustInherit Class NDocument 
   Inherits System.ComponentModel.Component
   Implements INContextMenuEditable, INDiagramElement, INDiagramElementContainer, INInvalidatable, INSerializationCallback, Nevron.Dom.INAttributeContainer, Nevron.Dom.INAttributeObserver, Nevron.Dom.INDocument, Nevron.Dom.INElement, Nevron.Dom.INElementContainer, Nevron.Dom.INHistoryCallback, Nevron.Dom.INIdentifiable, Nevron.Dom.INNode, Nevron.Dom.INNodeContainer, Nevron.Dom.INServiceProvider, Nevron.Dom.INUniquelyIdentifiable, Nevron.INReferenceHolder, Nevron.INReferenceProvider, Nevron.Serialization.INCustomDeserializationCallback

'Usage
 
Dim instance As NDocument

[System.Xml.Serialization.XmlInclude(Nevron.Diagram.NDrawingDocument)]
[System.ComponentModel.DesignerCategory("Component")]
[System.Serializable()]
public abstract class NDocument : System.ComponentModel.Component, INContextMenuEditable, INDiagramElement, INDiagramElementContainer, INInvalidatable, INSerializationCallback, Nevron.Dom.INAttributeContainer, Nevron.Dom.INAttributeObserver, Nevron.Dom.INDocument, Nevron.Dom.INElement, Nevron.Dom.INElementContainer, Nevron.Dom.INHistoryCallback, Nevron.Dom.INIdentifiable, Nevron.Dom.INNode, Nevron.Dom.INNodeContainer, Nevron.Dom.INServiceProvider, Nevron.Dom.INUniquelyIdentifiable, Nevron.INReferenceHolder, Nevron.INReferenceProvider, Nevron.Serialization.INCustomDeserializationCallback

Remarks

The NDocument class is the root of a diagram elements hierarchy and as such it implements the core Nevron DOM INDocument interface.

The services exposed by the document are maintained in an instance of the NServiceManager class, which is accessible from the ServiceManager property. Currently the NDocument class registers the following services:

All events are routed to this service. A reference to this service can be obtained from the EventSinkService property.
This service is used by elements to invalidate themselves (request to be repainted) in all views. A reference to this service can be obtained from the SmartPaintService property.
This service is used by elements to record history operations and transactions. A reference to this service can be obtained from the HistoryService property.

A single document can be displayed by multiple views. The NDocument class is responsible for maintainging a list of the views currently displaying it.

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      System.ComponentModel.Component
         Nevron.Diagram.NDocument
            Nevron.Diagram.NDrawingDocument
            Nevron.Diagram.NLibraryDocument

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

NDocument Members
Nevron.Diagram Namespace

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