--- /dev/null
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2018 Soeren Apel <soeren@apelpie.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "subwindow.hpp"
+
+using std::out_of_range;
+
+namespace pv {
+namespace subwindows {
+namespace decoder_selector {
+
+DecoderCollectionItem::DecoderCollectionItem(const vector<QVariant>& data,
+ shared_ptr<DecoderCollectionItem> parent) :
+ data_(data),
+ parent_(parent)
+{
+}
+
+void DecoderCollectionItem::appendSubItem(shared_ptr<DecoderCollectionItem> item)
+{
+ subItems_.push_back(item);
+}
+
+shared_ptr<DecoderCollectionItem> DecoderCollectionItem::subItem(int row) const
+{
+ try {
+ return subItems_.at(row);
+ } catch (out_of_range) {
+ return nullptr;
+ }
+}
+
+shared_ptr<DecoderCollectionItem> DecoderCollectionItem::parent() const
+{
+ return parent_;
+}
+
+shared_ptr<DecoderCollectionItem> DecoderCollectionItem::findSubItem(
+ const QVariant& value, int column)
+{
+ for (shared_ptr<DecoderCollectionItem> item : subItems_)
+ if (item->data(column) == value)
+ return item;
+
+ return nullptr;
+}
+
+int DecoderCollectionItem::subItemCount() const
+{
+ return subItems_.size();
+}
+
+int DecoderCollectionItem::columnCount() const
+{
+ return data_.size();
+}
+
+int DecoderCollectionItem::row() const
+{
+ if (parent_)
+ for (uint i = 0; i < parent_->subItems_.size(); i++)
+ if (parent_->subItems_.at(i).get() == const_cast<DecoderCollectionItem*>(this))
+ return i;
+
+ return 0;
+}
+
+QVariant DecoderCollectionItem::data(int column) const
+{
+ try {
+ return data_.at(column);
+ } catch (out_of_range) {
+ return QVariant();
+ }
+}
+
+} // namespace decoder_selector
+} // namespace subwindows
+} // namespace pv