SpecialChar Class

Base class for special characters in the document.

ExpandedInheritance Hierarchy

Namespace:  Aspose.Words
Assembly:  Aspose.Words (in Aspose.Words.dll) Version: 20.10.0

ExpandedSyntax

public class SpecialChar : Inline

The SpecialChar type exposes the following members.

ExpandedProperties

  NameDescription
Public propertyCode exampleDocument
Gets the document to which this node belongs.
(Inherited from Node.)
Public propertyCode exampleFont
Provides access to the font formatting of this object.
(Inherited from Inline.)
Public propertyCode exampleIsComposite
Returns true if this node can contain other nodes.
(Inherited from Node.)
Public propertyCode exampleIsDeleteRevision
Returns true if this object was deleted in Microsoft Word while change tracking was enabled.
(Inherited from Inline.)
Public propertyCode exampleIsFormatRevision
Returns true if formatting of the object was changed in Microsoft Word while change tracking was enabled.
(Inherited from Inline.)
Public propertyCode exampleIsInsertRevision
Returns true if this object was inserted in Microsoft Word while change tracking was enabled.
(Inherited from Inline.)
Public propertyCode exampleIsMoveFromRevision
Returns true if this object was moved (deleted) in Microsoft Word while change tracking was enabled.
(Inherited from Inline.)
Public propertyCode exampleIsMoveToRevision
Returns true if this object was moved (inserted) in Microsoft Word while change tracking was enabled.
(Inherited from Inline.)
Public propertyCode exampleNextSibling
Gets the node immediately following this node.
(Inherited from Node.)
Public propertyCode exampleNodeType
Returns NodeType.SpecialChar.
(Overrides NodeNodeType.)
Public propertyCode exampleParentNode
Gets the immediate parent of this node.
(Inherited from Node.)
Public propertyCode exampleParentParagraph
Retrieves the parent Paragraph of this node.
(Inherited from Inline.)
Public propertyCode examplePreviousSibling
Gets the node immediately preceding this node.
(Inherited from Node.)
Public propertyCode exampleRange
Returns a Range object that represents the portion of a document that is contained in this node.
(Inherited from Node.)

ExpandedMethods

  NameDescription
Public methodAccept
Accepts a visitor.
(Overrides NodeAccept(DocumentVisitor).)
Public methodCode exampleClone
Creates a duplicate of the node.
(Inherited from Node.)
Public methodEquals (Inherited from Object.)
Public methodCode exampleGetAncestor(Type)
Gets the first ancestor of the specified object type.
(Inherited from Node.)
Public methodCode exampleGetAncestor(NodeType)
Gets the first ancestor of the specified NodeType.
(Inherited from Node.)
Public methodGetHashCode (Inherited from Object.)
Public methodGetText
Gets the special character that this node represents.
(Overrides NodeGetText.)
Public methodGetType (Inherited from Object.)
Public methodCode exampleNextPreOrder
Gets next node according to the pre-order tree traversal algorithm.
(Inherited from Node.)
Public methodCode examplePreviousPreOrder
Gets the previous node according to the pre-order tree traversal algorithm.
(Inherited from Node.)
Public methodCode exampleRemove
Removes itself from the parent.
(Inherited from Node.)
Public methodToString (Inherited from Object.)
Public methodCode exampleToString(SaveFormat)
Exports the content of the node into a string in the specified format.
(Inherited from Node.)
Public methodCode exampleToString(SaveOptions)
Exports the content of the node into a string using the specified save options.
(Inherited from Node.)

ExpandedRemarks

A Microsoft Word document can include a number of special characters that represent fields, form fields, shapes, OLE objects, footnotes etc. For the list of special characters see ControlChar.

SpecialChar is an inline-node and can only be a child of Paragraph.

SpecialChar char is used as a base class for more specific classes that represent special characters that Aspose.Words provides programmatic access for. The SpecialChar class is also used itself to represent special character for which Aspose.Words does not provide detailed programmatic access.

ExpandedExamples

Implements the Visitor Pattern to remove all content formatted as hidden from the document.
public void RemoveHiddenContentFromDocument()
{
    // Open the document we want to remove hidden content from
    Document doc = new Document(MyDir + "Hidden content.docx");

    // Create an object that inherits from the DocumentVisitor class
    RemoveHiddenContentVisitor hiddenContentRemover = new RemoveHiddenContentVisitor();

    // We can run it over the entire the document like so
    doc.Accept(hiddenContentRemover);

    // Or we can run it on only a specific node
    Paragraph para = (Paragraph) doc.GetChild(NodeType.Paragraph, 4, true);
    para.Accept(hiddenContentRemover);

    // Or over a different type of node like below
    Table table = (Table) doc.GetChild(NodeType.Table, 0, true);
    table.Accept(hiddenContentRemover);

    doc.Save(ArtifactsDir + "Font.RemoveHiddenContentFromDocument.docx");
}

/// <summary>
/// This class when executed will remove all hidden content from the Document. Implemented as a Visitor.
/// </summary>
public class RemoveHiddenContentVisitor : DocumentVisitor
{
    /// <summary>
    /// Called when a FieldStart node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitFieldStart(FieldStart fieldStart)
    {
        if (fieldStart.Font.Hidden)
            fieldStart.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a FieldEnd node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitFieldEnd(FieldEnd fieldEnd)
    {
        if (fieldEnd.Font.Hidden)
            fieldEnd.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a FieldSeparator node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitFieldSeparator(FieldSeparator fieldSeparator)
    {
        if (fieldSeparator.Font.Hidden)
            fieldSeparator.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a Run node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitRun(Run run)
    {
        if (run.Font.Hidden)
            run.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a Paragraph node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitParagraphStart(Paragraph paragraph)
    {
        if (paragraph.ParagraphBreakFont.Hidden)
            paragraph.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a FormField is encountered in the document.
    /// </summary>
    public override VisitorAction VisitFormField(FormField formField)
    {
        if (formField.Font.Hidden)
            formField.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a GroupShape is encountered in the document.
    /// </summary>
    public override VisitorAction VisitGroupShapeStart(GroupShape groupShape)
    {
        if (groupShape.Font.Hidden)
            groupShape.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a Shape is encountered in the document.
    /// </summary>
    public override VisitorAction VisitShapeStart(Shape shape)
    {
        if (shape.Font.Hidden)
            shape.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a Comment is encountered in the document.
    /// </summary>
    public override VisitorAction VisitCommentStart(Comment comment)
    {
        if (comment.Font.Hidden)
            comment.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a Footnote is encountered in the document.
    /// </summary>
    public override VisitorAction VisitFootnoteStart(Footnote footnote)
    {
        if (footnote.Font.Hidden)
            footnote.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a SpecialCharacter is encountered in the document.
    /// </summary>
    public override VisitorAction VisitSpecialChar(SpecialChar specialChar)
    {
        if (specialChar.Font.Hidden)
            specialChar.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when visiting of a Table node is ended in the document.
    /// </summary>
    public override VisitorAction VisitTableEnd(Table table)
    {
        // Currently there is no way to tell if a particular Table/Row/Cell is hidden. 
        // Instead, if the content of a table is hidden, then all inline child nodes of the table should be 
        // hidden and thus removed by previous visits as well. This will result in the container being empty
        // If this is the case, we know to remove the table node.
        // 
        // Note that a table which is not hidden but simply has no content will not be affected by this algorithm,
        // as technically they are not completely empty (for example a properly formed Cell will have at least 
        // an empty paragraph in it)
        if (!table.HasChildNodes)
            table.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when visiting of a Cell node is ended in the document.
    /// </summary>
    public override VisitorAction VisitCellEnd(Cell cell)
    {
        if (!cell.HasChildNodes && cell.ParentNode != null)
            cell.Remove();

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when visiting of a Row node is ended in the document.
    /// </summary>
    public override VisitorAction VisitRowEnd(Row row)
    {
        if (!row.HasChildNodes && row.ParentNode != null)
            row.Remove();

        return VisitorAction.Continue;
    }
}

ExpandedSee Also