| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #if !defined(XALAN_EXTENSIONNSHANDLER_HEADER_GUARD) |
| #define XALAN_EXTENSIONNSHANDLER_HEADER_GUARD |
| |
| |
| // Base include file. Must be first. |
| #include "XSLTDefinitions.hpp" |
| |
| |
| |
| // Base class |
| #include "ExtensionFunctionHandler.hpp" |
| |
| |
| |
| #include <xalanc/Include/XalanSet.hpp> |
| |
| |
| |
| #include <xalanc/XalanDOM/XalanDOMString.hpp> |
| |
| |
| |
| #include <xalanc/PlatformSupport/DOMStringHelper.hpp> |
| |
| |
| |
| namespace XALAN_CPP_NAMESPACE { |
| |
| |
| |
| class Stylesheet; |
| class StylesheetExecutionContext; |
| class XalanElement; |
| class XalanNode; |
| class XalanQName; |
| |
| |
| |
| class XALAN_XSLT_EXPORT ExtensionNSHandler : public ExtensionFunctionHandler |
| { |
| public: |
| |
| /** |
| * Construct a new extension namespace handler for a given extension NS. |
| * This doesn't do anything - just hang on to the namespace URI. |
| * |
| * @param namespaceUri extension namespace URI being implemented |
| */ |
| ExtensionNSHandler( |
| const XalanDOMString& namespaceUri, |
| MemoryManager& theManager); |
| |
| static ExtensionNSHandler* |
| create( |
| const XalanDOMString& namespaceUri, |
| MemoryManager& theManager); |
| |
| /** |
| * Construct a new extension namespace handler given all the information |
| * needed. |
| * |
| * @param namespaceUri extension namespace URI being implemented |
| * @param elemNames string containing list of elements of extension NS |
| * @param funcNames string containing list of functions of extension NS |
| * @param lang language of code implementing the extension |
| * @param srcURL value of src attribute (if any) - treated as a URL |
| * or a classname depending on the value of lang. If |
| * srcURL is not null, then scriptSrc is ignored. |
| * @param scriptSrc the actual script code (if any) |
| */ |
| ExtensionNSHandler( |
| MemoryManager& theManager, |
| const XalanDOMString& namespaceUri, |
| const XalanDOMString& elemNames, |
| const XalanDOMString& funcNames, |
| const XalanDOMString& lang, |
| const XalanDOMString& srcURL, |
| const XalanDOMString& src); |
| |
| /** |
| * Set function local parts of extension NS. Super does the work; I |
| * just record that a component desc has been loaded. |
| * |
| * @param functions whitespace separated list of function names defined |
| * by this extension namespace |
| */ |
| virtual void |
| setFunctions(const XalanDOMString& funcNames); |
| |
| /** |
| * Set the script data for this extension NS. Deferred to super for |
| * actual work - only record that a component desc has been loaded. |
| * |
| * @param lang language of the script |
| * @param srcURL value of src attribute (if any) - treated as a URL |
| * or a classname depending on the value of lang. If |
| * srcURL is not null, then scriptSrc is ignored. |
| * @param scriptSrc the actual script code (if any) |
| */ |
| virtual void |
| setScript( |
| const XalanDOMString& lang, |
| const XalanDOMString& srcURL, |
| const XalanDOMString& scriptSrc); |
| |
| /** |
| * Set element local parts of extension NS. |
| * |
| * @param elemNames whitespace separated list of element names defined |
| * by this extension namespace |
| */ |
| void |
| setElements(const XalanDOMString& elemNames); |
| |
| /** |
| * Tests whether a certain element name is known within this namespace. |
| * |
| * @param element name of the element being tested |
| * @return true if known, false if not |
| */ |
| bool |
| isElementAvailable (const XalanDOMString& element) const; |
| |
| /** |
| * Process a call to this extension namespace via an element. As a side |
| * effect, the results are sent to the XSLTProcessor's result tree. |
| * |
| * @param localPart element name's local part |
| * @param element extension element being processed |
| * @param stylesheetTree compiled stylesheet tree |
| * @param mode current mode |
| * @param sourceTree root of the source tree (but don't assume it's a |
| * document) |
| * @param sourceNode current context node |
| * @exception XSLProcessorException thrown if something goes wrong |
| * while running the extension handler |
| * @exception MalformedURLException if loading trouble |
| * @exception FileNotFoundException if loading trouble |
| * @exception IOException if loading trouble |
| * @exception SAXException if parsing trouble |
| */ |
| void |
| processElement ( |
| StylesheetExecutionContext& executionContext, |
| const XalanDOMString& localPart, |
| const XalanElement* element, |
| Stylesheet& stylesheetTree, |
| const XalanNode* sourceTree, |
| const XalanNode* sourceNode, |
| const XalanQName& mode); |
| |
| protected: |
| |
| /** |
| * Start the component up by executing any script that needs to run |
| * at startup time. This needs to happen before any functions can be |
| * called on the component. |
| * |
| */ |
| virtual void |
| startupComponent(); |
| |
| private: |
| |
| typedef XalanSet<XalanDOMString> ExtensionSetType; |
| |
| // Extension elements of this namespace |
| ExtensionSetType m_elements; |
| |
| // True when info from the component description has been loaded. This gets |
| // set as soon as any of the info has been specified. If this is false, |
| // when processElement or processFunction is called it will use the |
| // namespace URI as a URL and try to load that location as the component |
| // description |
| bool m_componentDescLoaded; |
| |
| /** |
| * Load the component spec for this extension namespace taking the URI |
| * of this namespace as the URL to read from. |
| */ |
| void |
| loadComponentDescription(); |
| |
| /** |
| * extract the text nodes and CDATA content children of the given |
| * elem and return as a string. Any other types of node children |
| * are ignored |
| * |
| * @param elem element whose text and cdata children are to be |
| * concatenated together. |
| * |
| * @return string resulting from concatanating the text/cdata child |
| * nodes' values. |
| */ |
| static XalanDOMString& |
| getScriptString(const XalanElement& elem, XalanDOMString& theResult); |
| }; |
| |
| |
| |
| } |
| |
| |
| |
| #endif // XALAN_EXTENSIONNSHANDLER_HEADER_GUARD |