Aspose::Words::Markup::StructuredDocumentTag::Accept method
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[
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]StructuredDocumentTag::Accept method
Accepts a visitor.
bool Aspose::Words::Markup::StructuredDocumentTag::Accept(System::SharedPtr<Aspose::Words::DocumentVisitor> visitor) override
Parameter | Type | Description |
---|---|---|
visitor | System::SharedPtr<Aspose::Words::DocumentVisitor> | The visitor that will visit the nodes. |
ReturnValue
True if all nodes were visited; false if DocumentVisitor stopped the operation before visiting all nodes.
Remarks
Enumerates over this node and all of its children. Each node calls a corresponding method on DocumentVisitor.
For more info see the Visitor design pattern.
Examples
Shows how to print the node structure of every structured document tag in a document.
void StructuredDocumentTagToText()
{
auto doc = MakeObject<Document>(MyDir + u"DocumentVisitor-compatible features.docx");
auto visitor = MakeObject<ExDocumentVisitor::StructuredDocumentTagNodePrinter>();
// When we get a composite node to accept a document visitor, the visitor visits the accepting node,
// and then traverses all the node's children in a depth-first manner.
// The visitor can read and modify each visited node.
doc->Accept(visitor);
std::cout << visitor->GetText() << std::endl;
}
class StructuredDocumentTagNodePrinter : public DocumentVisitor
{
public:
StructuredDocumentTagNodePrinter() : mVisitorIsInsideStructuredDocumentTag(false), mDocTraversalDepth(0)
{
mBuilder = MakeObject<System::Text::StringBuilder>();
mVisitorIsInsideStructuredDocumentTag = false;
}
String GetText()
{
return mBuilder->ToString();
}
VisitorAction VisitRun(SharedPtr<Run> run) override
{
if (mVisitorIsInsideStructuredDocumentTag)
{
IndentAndAppendLine(String(u"[Run] \"") + run->GetText() + u"\"");
}
return VisitorAction::Continue;
}
VisitorAction VisitStructuredDocumentTagStart(SharedPtr<StructuredDocumentTag> sdt) override
{
IndentAndAppendLine(String(u"[StructuredDocumentTag start] Title: ") + sdt->get_Title());
mDocTraversalDepth++;
return VisitorAction::Continue;
}
VisitorAction VisitStructuredDocumentTagEnd(SharedPtr<StructuredDocumentTag> sdt) override
{
mDocTraversalDepth--;
IndentAndAppendLine(u"[StructuredDocumentTag end]");
return VisitorAction::Continue;
}
private:
bool mVisitorIsInsideStructuredDocumentTag;
int mDocTraversalDepth;
SharedPtr<System::Text::StringBuilder> mBuilder;
void IndentAndAppendLine(String text)
{
for (int i = 0; i < mDocTraversalDepth; i++)
{
mBuilder->Append(u"| ");
}
mBuilder->AppendLine(text);
}
};
See Also
- Class DocumentVisitor
- Class StructuredDocumentTag
- Namespace Aspose::Words::Markup
- Library Aspose.Words for C++