linksingleelementwidget.h

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/*
    Copyright 2006-2019 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 LINKSINGLEELEMENTWIDGET_H
#define LINKSINGLEELEMENTWIDGET_H

#include "element.h"
#include "abstractelementpropertieseditorwidget.h"

class QTreeWidgetItem;

namespace Ui {
    class LinkSingleElementWidget;
}

class LinkSingleElementWidget : public AbstractElementPropertiesEditorWidget
{
    Q_OBJECT

    public:
        explicit LinkSingleElementWidget(Element *elmt, QWidget *parent = nullptr);
        ~LinkSingleElementWidget() override;

        void setElement (Element *element) override;
        void apply() override;
        QUndoCommand *associatedUndo() const override;
        QString title() const override;

    public slots:
        void updateUi() override;
        void buildTree();

    public:
        bool setLiveEdit(bool live_edit) override;

    private :
        QList <Element *> availableElements();
        void setUpCompleter();
        void clearTreeWidget();
        void setUpHeaderLabels();

    private slots:
        void diagramWasRemovedFromProject();
        void showedElementWasDeleted();
        void linkTriggered();
        void hideButtons();
        void showButtons();
        void headerCustomContextMenuRequested(const QPoint &pos);
        
        void on_m_unlink_pb_clicked();
        void on_m_tree_widget_itemDoubleClicked(QTreeWidgetItem *item, int column);
        void on_m_tree_widget_customContextMenuRequested(const QPoint &pos);
        void on_m_show_linked_pb_clicked();
        void on_m_show_this_pb_clicked();
        
        void on_m_search_field_textEdited(const QString &arg1);
        
    private:
    Ui::LinkSingleElementWidget *ui;

    bool m_unlink = false;
    Element::kind m_filter;
    
    QHash <QTreeWidgetItem*, Element*> m_qtwi_elmt_hash;
    QHash <QTreeWidgetItem*, QStringList> m_qtwi_strl_hash;
    
    QTreeWidgetItem *m_qtwi_at_context_menu = nullptr,
                    *m_pending_qtwi = nullptr;
    
    Element *m_showed_element = nullptr,
            *m_element_to_link = nullptr;
    
    QMenu *m_context_menu;
    QAction *m_link_action,
            *m_show_qtwi,
            *m_show_element,
            *m_save_header_state;
};

#endif // LINKSINGLEELEMENTWIDGET_H