ITextStructureNavigator Interface

Provides methods to navigate text, such as getting word extents.

Namespace:  Microsoft.VisualStudio.Text.Operations
Assembly:  Microsoft.VisualStudio.Text.Logic (in Microsoft.VisualStudio.Text.Logic.dll)

Syntax

声明
Public Interface ITextStructureNavigator

public interface ITextStructureNavigator

public interface class ITextStructureNavigator

type ITextStructureNavigator =  interface end

public interface ITextStructureNavigator

The ITextStructureNavigator type exposes the following members.

Properties

	Name	Description
	ContentType	Gets the content type that this navigator supports.

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Methods

	Name	Description
	GetExtentOfWord	Gets the extent of the word at the given position.
	GetSpanOfEnclosing	Gets the span of the enclosing syntactic element of the specified snapshot span.
	GetSpanOfFirstChild	Gets the span of the first child syntactic element of the specified snapshot span.
	GetSpanOfNextSibling	Gets the span of the next sibling syntactic element of the specified snapshot span.
	GetSpanOfPreviousSibling	Gets the span of the previous sibling syntactic element of the specified snapshot span.

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Remarks

Implement this interface if you need to provide a special definition of a word extent in your language or content type, or if you need to define a special relationship between sibling or parent/child syntactic elements. To use it in your extension, you must also implement (in a separate class) the ITextStructureNavigatorProvider so that it creates a navigator of your type, and export this class for your content type. In this case the ITextStructureNavigatorSelectorService will assign your navigator to buffers that have the correct content type.

Examples

For an example of how to use the navigator and the navigator provider to get word extents, see Walkthrough: Displaying SmartTags.

See Also

Reference

Microsoft.VisualStudio.Text.Operations Namespace