+ name_widget_ = new QComboBox(parent);
+ name_widget_->setEditable(true);
+ name_widget_->setCompleter(nullptr);
+
+ for (unsigned int i = 0; i < countof(ChannelNames); i++)
+ name_widget_->insertItem(i, ChannelNames[i]);
+
+ const int index = name_widget_->findText(base_->name(), Qt::MatchExactly);
+
+ if (index == -1) {
+ name_widget_->insertItem(0, base_->name());
+ name_widget_->setCurrentIndex(0);
+ } else {
+ name_widget_->setCurrentIndex(index);
+ }
+
+ connect(name_widget_, SIGNAL(editTextChanged(const QString&)),
+ this, SLOT(on_nameedit_changed(const QString&)));
+
+ form->addRow(tr("Name"), name_widget_);
+
+ add_colour_option(parent, form);
+}
+
+QMenu* Signal::create_context_menu(QWidget *parent)
+{
+ QMenu *const menu = Trace::create_context_menu(parent);
+
+ menu->addSeparator();
+
+ QAction *const disable = new QAction(tr("Disable"), this);
+ disable->setShortcuts(QKeySequence::Delete);
+ connect(disable, SIGNAL(triggered()), this, SLOT(on_disable()));
+ menu->addAction(disable);
+
+ return menu;
+}
+
+void Signal::delete_pressed()
+{
+ on_disable();
+}
+
+void Signal::on_name_changed(const QString &text)
+{
+ // On startup, this event is fired when a session restores signal
+ // names. However, the name widget hasn't yet been created.
+ if (!name_widget_)
+ return;
+
+ if (text != name_widget_->currentText())
+ name_widget_->setEditText(text);
+
+ Trace::on_name_changed(text);
+}
+
+void Signal::on_disable()
+{
+ base_->set_enabled(false);
+}
+
+void Signal::on_enabled_changed(bool enabled)
+{
+ (void)enabled;
+
+ if (owner_)
+ owner_->extents_changed(true, true);