PLC Manager

sources/ui/plclinkwidget.h

@@ -0,0 +1,87 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech 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.
+
+	QElectroTech 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 QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef PLCLINKWIDGET_H
+#define PLCLINKWIDGET_H
+
+#include "abstractelementpropertieseditorwidget.h"
+
+#include <QHash>
+#include <QPointer>
+#include <QSet>
+
+class QTreeWidgetItem;
+class QTreeWidget;
+class QLineEdit;
+class QPushButton;
+class QLabel;
+class Element;
+
+/**
+	@brief The PlcLinkWidget class
+	Provides a dedicated widget for linking a PLC-Slave to a PLC-Master IO entry.
+	Displays all PLC-Masters as expandable items, each showing their IO entries.
+	Each IO entry can only be linked to one slave. Already-linked entries are
+	shown as struck-through and greyed out.
+*/
+class PlcLinkWidget : public AbstractElementPropertiesEditorWidget
+{
+	Q_OBJECT
+
+	public:
+		explicit PlcLinkWidget(Element *elmt, QWidget *parent = nullptr);
+		~PlcLinkWidget() override = default;
+
+		void setElement(Element *element) override;
+		void apply() override;
+		QUndoCommand *associatedUndo() const override;
+		QString title() const override;
+
+	public slots:
+		void updateUi() override;
+
+	private:
+		void buildPlcTree();
+		void hideButtons();
+		void showButtons();
+
+	private slots:
+		void on_m_search_field_textEdited(const QString &text);
+		void on_m_tree_widget_customContextMenuRequested(const QPoint &pos);
+		void on_m_unlink_pb_clicked();
+		void on_m_show_this_pb_clicked();
+
+	private:
+		QLabel *m_label{nullptr};
+		QPushButton *m_unlink_pb{nullptr};
+		QPushButton *m_show_this_pb{nullptr};
+		QLineEdit *m_search_field{nullptr};
+		QTreeWidget *m_tree_widget{nullptr};
+		QLabel *m_hidden_masters_label{nullptr};
+
+		// Maps IO child items to (master, io_index)
+		struct PlcIoEntry {
+			QPointer<Element> master;
+			int ioIndex = -1;
+		};
+		QHash<QTreeWidgetItem*, PlcIoEntry> m_io_entry_hash;
+
+		Element *m_element_to_link = nullptr;
+		int m_pending_io_index = -1;
+};
+
+#endif // PLCLINKWIDGET_H