Namespace Xslt
Class CExtensionHandler

class CExtensionHandler: public CInterface {
public:
    CExtensionHandler();
    virtual ~CExtensionHandler();
public:
    virtual XTopLevelExtensionContext 
        CreateTopLevelExtensionContext() = 0;
    virtual bool IsExtensionElementAvailable(
        const CString &strNamespaceUri,
        const CString &strLocalName) = 0;
    virtual XExtensionElement CreateExtensionElement(
        const XExtensionStaticContext &pExtensionStaticContext) = 0;
    virtual bool IsExtensionFunctionAvailable(
        const CString &strNamespaceUri,
        const CString &strLocalName) = 0;
    virtual XExtensionFunction FindExtensionFunction(
        const CString &strNamespaceUri,
        const CString &strLocalName) = 0;
    virtual void AddExtensionPackage(
        const XExtensionPackage &pExtensionPackage) = 0;
    virtual XExtensionPackage FindExtensionPackage(
        const CString &strNamespaceUri) = 0;
    };

The abstract interface for handling all extension elements and extension functions supported by the particular XSLT implementation.

Implementation of the interface defined by this class is supplied by the toolkit; toolkit users do not need to implement this interface.

Since:

1.00.00

Version:

1.00.00

Author:

Alexey Gokhberg

See Also:

CTopLevelExtensionContext, CExtensionElement, CExtensionFunction, CExtensionPackage

CExtensionHandler

CExtensionHandler();

Constructs the extension handler.

~CExtensionHandler

virtual ~CExtensionHandler();

Destroys the extension handler.

CreateTopLevelExtensionContext

virtual XTopLevelExtensionContext 
    CreateTopLevelExtensionContext() = 0;

Creates the top-level extension context.

Returns:

the newly created extension context

IsExtensionElementAvailable

virtual bool IsExtensionElementAvailable(
    const CString &strNamespaceUri,
    const CString &strLocalName) = 0;

Tests whether the extension element with the given name is supported by this extension handler.

Parameters:

strNamespaceUri - the namespace URI of the element

strLocalName - the local name of the element

Returns:

true if the extension element with the given name is supported by this extension handler; false otherwise

CreateExtensionElement

virtual XExtensionElement CreateExtensionElement(
    const XExtensionStaticContext &pExtensionStaticContext) = 0;

Creates an extension element in the given extension static context.

Parameters:

pExtensionStaticContext - the extension static context

Returns:

the newly created extension element

IsExtensionFunctionAvailable

virtual bool IsExtensionFunctionAvailable(
    const CString &strNamespaceUri,
    const CString &strLocalName) = 0;

Tests whether the extension function with the given name is supported by this extension handler.

Parameters:

strNamespaceUri - the namespace URI of the function

strLocalName - the local name of the function

Returns:

true if the extension function with the given name is supported by this extension handler; false otherwise

FindExtensionFunction

virtual XExtensionFunction FindExtensionFunction(
    const CString &strNamespaceUri,
    const CString &strLocalName) = 0;

Looks ip extension function with the given name in the list of functions supported by this extension handler.

Parameters:

strNamespaceUri - the namespace URI of the function

strLocalName - the local name of the function

Returns:

the extension function with the given name, or NULL if the function with this name is not supported by this extension handler

AddExtensionPackage

virtual void AddExtensionPackage(
    const XExtensionPackage &pExtensionPackage) = 0;

Adds the extension package to the list of packages supported by this extension handler.

Parameters:

pExtensionPackage - the extension package to add

FindExtensionPackage

virtual XExtensionPackage FindExtensionPackage(
    const CString &strNamespaceUri) = 0;

Looks up the extension package with the given namepace URI in the list of packages supported by this extension handler.

Parameters:

strNamespaceUri - the namespace URI of the package

Returns:

the extension package with the given namespace URI, or NULL if there is no such package in the list of packages supported by this extension handler