qgsmetadatawidget.h

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/***************************************************************************
                          QgsAbstractMetadataBasewidget.h  -  description
                             -------------------
    begin                : 17/05/2017
    copyright            : (C) 2017 by Etienne Trimaille
    email                : etienne at kartoza.com
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
#ifndef QgsAbstractMetadataBaseWIDGET_H
#define QgsAbstractMetadataBaseWIDGET_H

#include <QStandardItemModel>
#include <QStyledItemDelegate>
#include <QStringListModel>

#include "qgis_gui.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsdataprovider.h"
#include "qgslayermetadata.h"
#include "ui_qgsmetadatawidget.h"

class QgsMapLayer;
class QgsMapCanvas;

class GUI_EXPORT QgsMetadataWidget : public QWidget, private Ui::QgsMetadataWidgetBase
{
    Q_OBJECT
    Q_PROPERTY( QString title READ title WRITE setTitle NOTIFY titleChanged )

  public:

    enum Mode
    {
      LayerMetadata = 0, 
      ProjectMetadata, 
    };

    QgsMetadataWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr, QgsMapLayer *layer = nullptr );

    void setMode( Mode mode );

    Mode mode() const { return mMode; }

    void setMetadata( const QgsAbstractMetadataBase *metadata );

    QgsAbstractMetadataBase *metadata() SIP_FACTORY;

    void saveMetadata( QgsAbstractMetadataBase *metadata );

    bool checkMetadata();

    void crsChanged();

    void acceptMetadata();

    static QMap<QString, QString> parseLanguages();

    static QStringList parseLicenses();

    static QStringList parseLinkTypes();

    static QStringList parseMimeTypes();

    static QMap<QString, QString> parseTypes();

    void setMapCanvas( QgsMapCanvas *canvas );

    QString title() const;

  public slots:

    void setTitle( const QString &title );

  signals:

    void titleChanged( const QString &title );

  private slots:
    void removeSelectedCategories();
    void updatePanel();
    void fillSourceFromLayer();
    void fillCrsFromLayer();
    void fillCrsFromProvider();
    void addDefaultCategories();
    void addNewCategory();
    void addVocabulary();
    void removeSelectedVocabulary();
    void addLicence();
    void removeSelectedLicence();
    void addRight();
    void removeSelectedRight();
    void addConstraint();
    void removeSelectedConstraint();
    void addAddress();
    void removeSelectedAddress();
    void addLink();
    void removeSelectedLink();
    void addHistory();
    void removeSelectedHistory();

  private:

    void fillComboBox();
    void setUiFromMetadata();
    void syncFromCategoriesTabToKeywordsTab();

    Mode mMode = LayerMetadata;

    QStringList mDefaultCategories;
    QgsMapLayer *mLayer = nullptr;
    QgsCoordinateReferenceSystem mCrs;
    std::unique_ptr< QgsAbstractMetadataBase > mMetadata;
    QStandardItemModel *mConstraintsModel = nullptr;
    QStandardItemModel *mLinksModel = nullptr;
    QStringListModel *mCategoriesModel = nullptr;
    QStringListModel *mDefaultCategoriesModel = nullptr;
    QStringListModel *mRightsModel = nullptr;
    QStringListModel *mHistoryModel = nullptr;
};

#ifndef SIP_RUN


class LinkItemDelegate : public QStyledItemDelegate
{

    Q_OBJECT

  public:

    explicit LinkItemDelegate( QObject *parent = nullptr );

    QWidget *createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const override;
};

class ConstraintItemDelegate : public QStyledItemDelegate
{

    Q_OBJECT

  public:

    explicit ConstraintItemDelegate( QObject *parent = nullptr );

    QWidget *createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const override;
};

#endif
#endif