layoutatomvisitorbase.hxx

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#ifndef INCLUDED_OOX_SOURCE_DRAWINGML_DIAGRAM_LAYOUTATOMVISITORBASE_HXX
#define INCLUDED_OOX_SOURCE_DRAWINGML_DIAGRAM_LAYOUTATOMVISITORBASE_HXX

#include "diagram.hxx"
#include "diagramlayoutatoms.hxx"

namespace oox::drawingml {

struct LayoutAtomVisitor
{
    virtual ~LayoutAtomVisitor() {}
    virtual void visit(ConstraintAtom& rAtom) = 0;
    virtual void visit(RuleAtom& rAtom) = 0;
    virtual void visit(AlgAtom& rAtom) = 0;
    virtual void visit(ForEachAtom& rAtom) = 0;
    virtual void visit(ConditionAtom& rAtom) = 0;
    virtual void visit(ChooseAtom& rAtom) = 0;
    virtual void visit(LayoutNode& rAtom) = 0;
    virtual void visit(ShapeAtom& rAtom) = 0;
};

// basic visitor implementation that follows if/else and for-each nodes
// and keeps track of current position in data tree
class LayoutAtomVisitorBase : public LayoutAtomVisitor
{
public:
    LayoutAtomVisitorBase(const Diagram& rDgm, const dgm::Point* pRootPoint) :
        mrDgm(rDgm),
        mpCurrentNode(pRootPoint),
        mnCurrIdx(0),
        mnCurrStep(0),
        mnCurrCnt(0),
        meLookFor(LAYOUT_NODE)
    {}

    void defaultVisit(LayoutAtom const& rAtom);

    using LayoutAtomVisitor::visit;
    virtual void visit(ForEachAtom& rAtom) override;
    virtual void visit(ConditionAtom& rAtom) override;
    virtual void visit(ChooseAtom& rAtom) override;
    virtual void visit(LayoutNode& rAtom) override;

protected:
    const Diagram& mrDgm;
    const dgm::Point* mpCurrentNode;
    sal_Int32 mnCurrIdx;
    sal_Int32 mnCurrStep;
    sal_Int32 mnCurrCnt;
    enum {LAYOUT_NODE, CONSTRAINT, ALGORITHM, RULE} meLookFor;
};

class ShallowPresNameVisitor : public LayoutAtomVisitorBase
{
public:
    explicit ShallowPresNameVisitor(const Diagram& rDgm, const dgm::Point* pRootPoint) :
        LayoutAtomVisitorBase(rDgm, pRootPoint),
        mnCnt(0)
    {}

    using LayoutAtomVisitorBase::visit;
    virtual void visit(ConstraintAtom& rAtom) override;
    virtual void visit(RuleAtom& rAtom) override;
    virtual void visit(AlgAtom& rAtom) override;
    virtual void visit(ForEachAtom& rAtom) override;
    virtual void visit(LayoutNode& rAtom) override;
    virtual void visit(ShapeAtom& rAtom) override;

    size_t getCount() const { return mnCnt; }

private:
    size_t mnCnt;
};

}

#endif

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