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46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef Patternist_DelegatingDynamicContext_H
53 #define Patternist_DelegatingDynamicContext_H
55 #include <private/qdynamiccontext_p.h>
56 #include <private/qexpression_p.h>
65 * @short Base class for dynamic contexts that are
66 * created from an existing one.
68 * In some cases multiple DynamicContext instances must be used in
69 * order to maintain somekind of scope. This class delegates
70 * the DynamicContext interface onto another DynamicContext instance,
71 * allowing the sub-class to only implement what it needs to.
73 * @author Frans Englich <frans.englich@nokia.com>
75 class DelegatingDynamicContext : public DynamicContext
78 virtual xsInteger contextPosition() const;
79 virtual Item contextItem() const;
80 virtual xsInteger contextSize();
82 virtual ItemCacheCell &itemCacheCell(const VariableSlotID slot);
83 virtual ItemSequenceCacheCell::Vector &itemSequenceCacheCells(const VariableSlotID slot);
85 virtual void setRangeVariable(const VariableSlotID slotNumber,
86 const Item &newValue);
87 virtual Item rangeVariable(const VariableSlotID slotNumber) const;
89 virtual void setExpressionVariable(const VariableSlotID slotNumber,
90 const Expression::Ptr &newValue);
91 virtual Expression::Ptr expressionVariable(const VariableSlotID slotNumber) const;
93 virtual void setFocusIterator(const Item::Iterator::Ptr &it);
94 virtual Item::Iterator::Ptr focusIterator() const;
96 virtual Item::Iterator::Ptr positionIterator(const VariableSlotID slot) const;
97 virtual void setPositionIterator(const VariableSlotID slot,
98 const Item::Iterator::Ptr &newValue);
100 virtual QAbstractMessageHandler * messageHandler() const;
101 virtual QExplicitlySharedDataPointer<DayTimeDuration> implicitTimezone() const;
102 virtual QDateTime currentDateTime() const;
103 virtual QAbstractXmlReceiver *outputReceiver() const;
104 virtual NodeBuilder::Ptr nodeBuilder(const QUrl &baseURI) const;
105 virtual ResourceLoader::Ptr resourceLoader() const;
106 virtual ExternalVariableLoader::Ptr externalVariableLoader() const;
107 virtual NamePool::Ptr namePool() const;
108 virtual QSourceLocation locationFor(const SourceLocationReflection *const reflection) const;
109 virtual void addNodeModel(const QAbstractXmlNodeModel::Ptr &nm);
110 virtual const QAbstractUriResolver *uriResolver() const;
111 virtual ItemCacheCell &globalItemCacheCell(const VariableSlotID slot);
112 virtual ItemSequenceCacheCell::Vector &globalItemSequenceCacheCells(const VariableSlotID slot);
113 virtual Item currentItem() const;
114 virtual TemplateParameterHash &templateParameterStore();
116 virtual DynamicContext::Ptr previousContext() const;
117 virtual QExplicitlySharedDataPointer<TemplateMode> currentTemplateMode() const;
120 DelegatingDynamicContext(const DynamicContext::Ptr &prevContext);
122 const DynamicContext::Ptr m_prevContext;