String GlyphsSelection::GetXMLCopy()
{
// handle single-text case
bool singleText = (firstGlyph.textNode == lastGlyph.textNode);
if (singleText) {
int startOffset = firstGlyph.StartOffset();
int endOffset = lastGlyph.EndOffset();
return firstGlyph.textNode->GetText()->SubstringData(startOffset, endOffset - startOffset);
}
// get info about the structure
DisplayNode* ancestor = firstGlyph.CommonAncestorWith(lastGlyph);
bool startsWithText = (firstGlyph.textNode->Parent() == ancestor);
bool endsWithText = (lastGlyph.textNode->Parent() == ancestor);
// find out where the first and last embedded elements are
// first
ElementDisplayNode* firstElementDisplayNode = NULL;
if (!startsWithText) {
// it's the element the first glyph is in
DisplayNode* firstElementNode = firstGlyph.textNode;
while (firstElementNode) {
if (firstElementNode->Parent() == ancestor)
break;
firstElementNode = firstElementNode->Parent();
}
firstElementDisplayNode = dynamic_cast<ElementDisplayNode*>(firstElementNode);
}
else {
firstElementDisplayNode =
dynamic_cast<ElementDisplayNode*>(firstGlyph.textNode->NextSibling());
}
if (firstElementDisplayNode == NULL)
throw InternalException("GlyphsSelection::GetXMLCopy: Couldn't find firstElementNode.");
Node* firstElement = firstElementDisplayNode->GetElement();
// last
ElementDisplayNode* lastElementDisplayNode = NULL;
if (!endsWithText) {
// it's the element the last glyph is in
DisplayNode* lastElementNode = lastGlyph.textNode;
while (lastElementNode) {
if (lastElementNode->Parent() == ancestor)
break;
lastElementNode = lastElementNode->Parent();
}
lastElementDisplayNode = dynamic_cast<ElementDisplayNode*>(lastElementNode);
}
else {
lastElementDisplayNode =
dynamic_cast<ElementDisplayNode*>(lastGlyph.textNode->PreviousSibling());
}
if (lastElementDisplayNode == NULL)
throw InternalException("GlyphsSelection::GetXMLCopy: Couldn't find lastElementNode.");
Node* lastElement = lastElementDisplayNode->GetElement();
// write the selection
XMLStringWriter writer(NULL);
if (startsWithText) {
Text* startText = firstGlyph.textNode->GetText();
int startOffset = firstGlyph.StartOffset();
String startData =
startText->SubstringData(startOffset, startText->Length() - startOffset);
writer.AppendString(startData);
}
for (Node* node = firstElement; ; node = node->NextSibling()) {
writer.AppendNode(node);
if (node == lastElement)
break;
}
if (endsWithText) {
Text* endText = lastGlyph.textNode->GetText();
int endOffset = lastGlyph.EndOffset();
String endData = endText->SubstringData(0, endOffset);
writer.AppendString(endData);
}
return writer.GetString();
}
