forms/source/xforms/pathexpression.hxx

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  19
  20 #ifndef INCLUDED_FORMS_SOURCE_XFORMS_PATHEXPRESSION_HXX
  21 #define INCLUDED_FORMS_SOURCE_XFORMS_PATHEXPRESSION_HXX
  22
  23 #include "computedexpression.hxx"
  24
  25 #include <vector>
  26
  27 // forward declaractions
  28 namespace com::sun::star::xml::dom
  29 {
  30 class XNodeList;
  31 namespace events
  32 {
  33 class XEventListener;
  34 }
  35 }
  36
  37 namespace xforms
  38 {
  39 /** PathExpression represents an XPath Expression and caches results */
  40 class PathExpression final : public ComputedExpression
  41 {
  42 public:
  43     typedef std::vector<css::uno::Reference<css::xml::dom::XNode>> NodeVector_t;
  44
  45 private:
  46     /// the node-list result from the last bind (cached from mxResult)
  47     NodeVector_t maNodes;
  48
  49     /// get expression for evaluation
  50     OUString _getExpressionForEvaluation() const;
  51
  52 public:
  53     PathExpression();
  54     ~PathExpression();
  55
  56     /// set the expression string
  57     /// (overridden to do remove old listeners)
  58     /// (also defines simple expressions)
  59     void setExpression(const OUString& rExpression);
  60
  61     /// evaluate the expression relative to the content node.
  62     void evaluate(const xforms::EvaluationContext& rContext);
  63
  64     // get the result of this expression as node/node list/...
  65     css::uno::Reference<css::xml::dom::XNode> getNode() const;
  66     const NodeVector_t& getNodeList() const { return maNodes; }
  67     css::uno::Reference<css::xml::dom::XNodeList> getXNodeList() const;
  68 };
  69
  70 } // namespace xforms
  71
  72 #endif
  73
  74 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */