+
+ScreensPanel::Comparator::Comparator ()
+{
+ UErrorCode status = U_ZERO_ERROR;
+ _collator = ucol_open(nullptr, &status);
+ if (_collator) {
+ ucol_setAttribute(_collator, UCOL_NORMALIZATION_MODE, UCOL_ON, &status);
+ ucol_setAttribute(_collator, UCOL_STRENGTH, UCOL_PRIMARY, &status);
+ ucol_setAttribute(_collator, UCOL_ALTERNATE_HANDLING, UCOL_SHIFTED, &status);
+ }
+}
+
+ScreensPanel::Comparator::~Comparator ()
+{
+ if (_collator) {
+ ucol_close (_collator);
+ }
+}
+
+int
+ScreensPanel::Comparator::Compare (wxTreeListCtrl* tree_list, unsigned, wxTreeListItem a, wxTreeListItem b)
+{
+ auto utf8_a = wx_to_std(tree_list->GetItemText(a));
+ auto utf8_b = wx_to_std(tree_list->GetItemText(b));
+ if (_collator) {
+ UErrorCode error = U_ZERO_ERROR;
+ boost::scoped_array<uint16_t> utf16_a(new uint16_t[utf8_a.size() + 1]);
+ u_strFromUTF8(reinterpret_cast<UChar*>(utf16_a.get()), utf8_a.size() + 1, nullptr, utf8_a.c_str(), -1, &error);
+ boost::scoped_array<uint16_t> utf16_b(new uint16_t[utf8_b.size() + 1]);
+ u_strFromUTF8(reinterpret_cast<UChar*>(utf16_b.get()), utf8_b.size() + 1, nullptr, utf8_b.c_str(), -1, &error);
+ return ucol_strcoll(_collator, reinterpret_cast<UChar*>(utf16_a.get()), -1, reinterpret_cast<UChar*>(utf16_b.get()), -1);
+ } else {
+ return strcoll(utf8_a.c_str(), utf8_b.c_str());
+ }
+}