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context.hh
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49 
50 #ifndef VSI_CONTEXT_HH
51 #define VSI_CONTEXT_HH
52 
53 //== INCLUDES =================================================================
54 #include <QVector>
55 #include <QStringList>
56 #include <QXmlQuery>
57 
58 #include "element.hh"
59 
60 //== FORWARDDECLARATIONS ======================================================
61 class QScriptEngine;
62 
63 //== NAMESPACES ===============================================================
64 namespace VSI {
65 
66 //== FORWARDDECLARATIONS ======================================================
67 class Input;
68 class Output;
69 class InOut;
70 class Type;
71 
72 //== CLASS DEFINITION =========================================================
73 
76 class Context {
77 
78  public:
80  Context (QScriptEngine *_engine);
81 
83  ~Context ();
84 
86  void parse (QByteArray _xml);
87 
89  const QVector<Element *>& elements () const { return elements_; };
90 
92  QVector<Element *> elements (QString _category);
93 
95  Element *element (QString _name);
96 
98  QStringList categories ();
99 
101  void registerType (Type *_type);
102 
104  bool typeSupported (QString _type);
105 
107  Type *getType (QString _type);
108 
110  bool canConvert (QString _type1, QString _type2);
111 
113  QScriptEngine *scriptEngine () { return scriptEngine_; };
114 
116  static bool strToBool (QString _str);
117 
119  static QString getXmlString (QXmlQuery &_xml, QString _expr, QString _default = "");
120 
121  private:
122 
123  // parse element from xml
124  void parseElement (QXmlQuery &_xml);
125 
126  // parse element input from xml
127  Input *parseInput (QXmlQuery &_xml, Element *_e);
128 
129  // parse element output from xml
130  Output *parseOutput (QXmlQuery &_xml, Element *_e);
131 
132  // parse element function from xml
133  Function *parseFunction (QXmlQuery &_xml, Element *_e);
134 
135  // parse common input and output parts from xml
136  bool parseInOutBase (QXmlQuery &_xml, InOut *_io);
137 
138  private:
139  QVector <Element *> elements_;
140 
141  QMap <QString, Type*> supportedTypes_;
142 
143  QList <Type *> types_;
144 
145  QScriptEngine *scriptEngine_;
146 };
147 
148 //=============================================================================
149 }
150 //=============================================================================
151 
152 #endif
bool canConvert(QString _type1, QString _type2)
Can the given types be converted to each other.
Definition: context.cc:585
static bool strToBool(QString _str)
Converts the given string to bool.
Definition: context.cc:555
void registerType(Type *_type)
Registers a supported datatype.
Definition: context.cc:566
static QString getXmlString(QXmlQuery &_xml, QString _expr, QString _default="")
Gets the string of a xml query.
Definition: context.cc:540
Context(QScriptEngine *_engine)
Constructor.
Definition: context.cc:84
Element * element(QString _name)
Returns the element with a given name.
Definition: context.cc:163
~Context()
Destructor.
Definition: context.cc:140
QStringList categories()
List of categories.
Definition: context.cc:174
const QVector< Element * > & elements() const
Returns all available elements.
Definition: context.hh:89
bool typeSupported(QString _type)
Is the given type supported.
Definition: context.cc:577
QScriptEngine * scriptEngine()
Return script engine pointer.
Definition: context.hh:113
void parse(QByteArray _xml)
Parse xml content.
Definition: context.cc:188
Type * getType(QString _type)
Get type object for given type name.
Definition: context.cc:596