Libreoffice API (UNO) : text and data from xTextField - c++

Question

How can I get xTextFields from .odt document properly?
I tried something like that, but it doesn't work (Any returns a nullptr address):
Reference <XTextFieldsSupplier> xTextFieldsSupplier (xTextDoc, UNO_QUERY);
if (!xTextFieldsSupplier.is())
return { };
Reference<XNameAccess> xTextFieldsInfo = xTextFieldsSupplier->getTextFieldMasters();
if (!xTextFieldsInfo.is())
return { };
Sequence<OUString> xTextFieldsNames = xTextFieldsInfo->getElementNames();
Any any;
for (::rtl::OUString* field = xTextFieldsNames.begin();
field != xTextFieldsNames.end();
field++) {
std::stringstream field_string;
field_string << *field;
QString fieldName = QString::fromStdString(field_string.str());
any = xTextFieldsInfo->getByName(*field);
Reference< XTextField > xField(any, UNO_QUERY);
// other code to work with xField
}
UPD:
I got a solution that helped me here:
Libreoffice API (UNO): need to change user's xTextField text

Answer 1

XTextFieldsSupplier has two methods, and it looks like you chose the wrong one. The method to get text fields is getTextFields().
Example code:
Reference< XEnumerationAccess > xFieldsEnumAccess = xTextFieldsSupplier->getTextFields();
Reference< XEnumeration > xFieldsEnum = xFieldsEnumAccess->createEnumeration();
Reference< XTextRange > xTextRange;
while ( xFieldsEnum->hasMoreElements() )
{
Any aNextElement = xFieldsEnum->nextElement();
Reference< XTextField > xField(aNextElement, UNO_QUERY);
OUString presentation = xField->getPresentation(true);
xTextRange = xText->getEnd();
xTextRange->setString(presentation + OUString::createFromAscii("\n"));
}
If you want to deal with text field masters instead, then your code is mostly correct.
Any aFieldMaster;
aFieldMaster = xNamedFieldMasters->getByName(*field);
EDIT:
Here is where xText comes from.
Reference < XTextDocument > xTextDocument (xComponent,UNO_QUERY);
Reference< XText > xText = xTextDocument->getText();
EDIT 2:
Here is an example of changing a text field. Start with a new Writer document and go to Insert -> Field -> More Fields. Under the Functions tab, double-click Input Field. Enter "hello" in the text box area and press OK.
Then, run the following code.
Reference< XServiceInfo > xInfo (xField, UNO_QUERY);
OUString sContent;
if (xInfo->supportsService("com.sun.star.text.TextField.Input"))
{
Reference< XPropertySet > xProps (xField, UNO_QUERY);
Any aContent = xProps->getPropertyValue(OUString::createFromAscii("Content"));
aContent >>= sContent;
sContent += OUString::createFromAscii(" there");
aContent <<= sContent;
xProps->setPropertyValue(OUString::createFromAscii("Content"), aContent);
Reference< XRefreshable > xRefreshable (xFieldsEnumAccess, UNO_QUERY);
xRefreshable->refresh();
}
Now, the field contains "hello there".
For more information, please review Andrew's Macro Document section 5.18 User Fields.