Terminal strip editor: remember the manufacturer filter of each strip

The manufacturer chosen to filter the terminals of the Width column is
stored in the data of the terminal strip (information "manufacturer" of
terminal_strip_data, written only when set), and selected again when the
strip is shown in the editor. Each strip keeps its own manufacturer.
Older versions ignore this information.

TerminalStripEditor::apply() now starts from the current data of the strip
instead of a new TerminalStripData: the uuid of the strip was replaced by
a new one at each apply, and the new information would have been lost.

sources/TerminalStrip/ui/terminalstripeditor.cpp

@@ -130,6 +130,7 @@ void TerminalStripEditor::setCurrentStrip(TerminalStrip *strip_)
 		ui->m_name_le         ->setText(strip_->name());
 		ui->m_comment_le      ->setText(strip_->comment());
 		ui->m_description_te  ->setPlainText(strip_->description());
+		setManufacturerFilter(strip_->manufacturer());
 		ui->m_move_to_cb->addItem(tr("Independent terminals"), QUuid());
 
 		const auto project_{strip_->project()};
@@ -202,12 +203,14 @@ void TerminalStripEditor::apply()
 	{
 		m_project->undoStack()->beginMacro(tr("Modify terminal strip properties"));
 
-		TerminalStripData data;
+			//Start from the current data : keep the uuid of the strip
+		TerminalStripData data = m_current_strip->data();
 		data.m_installation = ui->m_installation_le->text();
 		data.m_location     = ui->m_location_le->text();
 		data.m_name         = ui->m_name_le->text();
 		data.m_comment      = ui->m_comment_le->text();
 		data.m_description  = ui->m_description_te->toPlainText();
+		data.m_manufacturer = ui->m_manufacturer_cb->currentData().toString();
 
 		m_project->undoStack()->push(new ChangeTerminalStripData(m_current_strip, data, nullptr));
 
@@ -269,6 +272,21 @@ void TerminalStripEditor::clear()
         m_model->deleteLater();
         m_model = nullptr;
     }
+    setManufacturerFilter(QString());
+}
+
+/**
+ * @brief TerminalStripEditor::setManufacturerFilter
+ * Select @a manufacturer in the manufacturer combo box : only the terminals
+ * of this manufacturer are proposed in the Width column.
+ * Each terminal strip stores its own manufacturer (TerminalStripData),
+ * an empty or unknown manufacturer proposes all the manufacturers.
+ * @param manufacturer
+ */
+void TerminalStripEditor::setManufacturerFilter(const QString &manufacturer)
+{
+	const auto index_ = ui->m_manufacturer_cb->findData(manufacturer);
+	ui->m_manufacturer_cb->setCurrentIndex(index_ > 0 ? index_ : 0);
 }
 
 /**