113 lines
4.0 KiB
Plaintext
113 lines
4.0 KiB
Plaintext
#ifndef OSGINTROSPECTION_CUSTOMATTRIBUTEPROVIDER_
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#define OSGINTROSPECTION_CUSTOMATTRIBUTEPROVIDER_
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#include <osgIntrospection/Export>
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#include <osgIntrospection/CustomAttribute>
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#include <vector>
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#include <typeinfo>
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namespace osgIntrospection
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{
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// forward declarations
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class Type;
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class CustomAttribute;
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class CustomAttributeProvider;
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// vector of attributes
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typedef std::vector<const CustomAttribute *> CustomAttributeList;
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// vector of attribute providers
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typedef std::vector<const CustomAttributeProvider *> CustomAttributeProviderList;
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/// This is the base class for custom attribute providers, that is objects
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/// that can be assigned a list of custom attributes. Methods defined in
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/// this class provide the means for adding, retrieving and searching for
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/// attributes.
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class OSGINTROSPECTION_EXPORT CustomAttributeProvider
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{
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public:
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/// Returns the const list of custom attributes.
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inline const CustomAttributeList &getCustomAttributes() const
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{
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return attribs_;
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}
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/// Returns the list of custom attributes.
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inline CustomAttributeList &getCustomAttributes()
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{
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return attribs_;
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}
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/// Adds a new attribute to the list.
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inline CustomAttributeProvider *addAttribute(const CustomAttribute *attr)
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{
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attribs_.push_back(attr);
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return this;
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}
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/// Returns whether at least one attribute of the given type is
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/// present in the attribute list. If the inherit parameter is
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/// set to true, the search is forwarded to base types.
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bool isDefined(const Type &type, bool inherit) const;
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/// Returns whether at least one attribute of the given type is
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/// present in the attribute list. If the inherit parameter is
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/// set to true, the search is forwarded to base types.
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/// [template version]
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template<typename T> inline bool isDefined(bool inherit) const
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{
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for (CustomAttributeList::const_iterator i=attribs_.begin(); i!=attribs_.end(); ++i)
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if (typeid(**i) == typeid(T)) return true;
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if (inherit)
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{
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CustomAttributeProviderList providers;
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getInheritedProviders(providers);
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for (CustomAttributeProviderList::const_iterator i=providers.begin(); i!=providers.end(); ++i)
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{
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if ((*i)->isDefined<T>(true)) return true;
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}
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}
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return false;
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}
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/// Searchs for an attribute of the given type and returns a pointer
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/// to it if found, a null pointer otherwise. If the inherit parameter
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/// is set to true, the search is forwarded to base types.
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const CustomAttribute *getAttribute(const Type &type, bool inherit) const;
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/// Searchs for an attribute of the given type and returns a pointer
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/// to it if found, a null pointer otherwise. If the inherit parameter
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/// is set to true, the search is forwarded to base types.
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/// [template version]
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template<typename T> inline const T *getAttribute(bool inherit) const
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{
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for (CustomAttributeList::const_iterator i=attribs_.begin(); i!=attribs_.end(); ++i)
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if (typeid(**i) == typeid(T)) return static_cast<const T *>(*i);
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if (inherit)
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{
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CustomAttributeProviderList providers;
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getInheritedProviders(providers);
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for (CustomAttributeProviderList::const_iterator i=providers.begin(); i!=providers.end(); ++i)
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{
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const T *ca = (*i)->getAttribute<T>(true);
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if (ca) return ca;
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}
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}
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return 0;
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}
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protected:
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virtual void getInheritedProviders(CustomAttributeProviderList &providers) const = 0;
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virtual ~CustomAttributeProvider() {}
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private:
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CustomAttributeList attribs_;
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};
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}
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#endif
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