HRESULT STDMETHODCALLTYPE SumatraUIAutomationTextRange::GetText(int maxLength, BSTR *text)
{
if (text == NULL)
return E_POINTER;
if (!document->IsDocumentLoaded())
return E_FAIL;
if (IsNullRange() || IsEmptyRange()) {
*text = SysAllocString(L""); // 0-sized not-null string
return S_OK;
}
TextSelection selection(document->GetDM()->engine(), document->GetDM()->textCache);
selection.StartAt(startPage, startGlyph);
selection.SelectUpTo(endPage, endGlyph);
ScopedMem<WCHAR> selected_text(selection.ExtractText(L"\r\n"));
size_t selected_text_length = str::Len(selected_text);
// -1 and [0, inf) are allowed
if (maxLength > -2) {
if (maxLength != -1 && selected_text_length > (size_t)maxLength)
selected_text[maxLength] = '\0'; // truncate
*text = SysAllocString(selected_text);
if (*text)
return S_OK;
else
return E_OUTOFMEMORY;
} else {
return E_INVALIDARG;
}
}
HRESULT STDMETHODCALLTYPE SumatraUIAutomationTextRange::Select(void) {
if (!document->IsDocumentLoaded())
return E_FAIL;
if (IsNullRange() || IsEmptyRange()) {
document->GetDM()->textSelection->Reset();
} else {
document->GetDM()->textSelection->Reset();
document->GetDM()->textSelection->StartAt(startPage, startGlyph);
document->GetDM()->textSelection->SelectUpTo(endPage, endGlyph);
}
return S_OK;
}
