qgsmaplayerstylemanager.h

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/***************************************************************************
  qgsmaplayerstylemanager.h
  --------------------------------------
  Date                 : January 2015
  Copyright            : (C) 2015 by Martin Dobias
  Email                : wonder dot sk at gmail dot 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 QGSMAPLAYERSTYLEMANAGER_H
#define QGSMAPLAYERSTYLEMANAGER_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgsmaplayerstyle.h"
 
#include <QByteArray>
#include <QMap>
#include <QObject>
#include <QStringList>
 
class QDomElement;
 
class QgsMapLayer;

class CORE_EXPORT QgsMapLayerStyleManager : public QObject
{
    Q_OBJECT
  public:

    QgsMapLayerStyleManager( QgsMapLayer *layer SIP_TRANSFERTHIS );

    QgsMapLayer *layer() const { return mLayer; }

    void reset();

    void readXml( const QDomElement &mgrElement );
    void writeXml( QDomElement &mgrElement ) const;

    QStringList styles() const;

    QMap<QString, QgsMapLayerStyle> mapLayerStyles() const;

    QgsMapLayerStyle style( const QString &name ) const;

    bool addStyle( const QString &name, const QgsMapLayerStyle &style );

    bool addStyleFromLayer( const QString &name );

    bool removeStyle( const QString &name );

    bool renameStyle( const QString &name, const QString &newName );

    QString currentStyle() const;

    bool setCurrentStyle( const QString &name );

    bool setOverrideStyle( const QString &styleDef );
    bool restoreOverrideStyle();

    static bool isDefault( const QString &styleName );

    void copyStylesFrom( QgsMapLayerStyleManager *other );
 
  signals:
    void styleAdded( const QString &name );
    void styleRemoved( const QString &name );
    void styleRenamed( const QString &oldName, const QString &newName );
    void currentStyleChanged( const QString &currentName );
 
  private:
    QgsMapLayer *mLayer = nullptr;
    QMap<QString, QgsMapLayerStyle> mStyles;
    QString mCurrentStyle;
    QgsMapLayerStyle *mOverriddenOriginalStyle = nullptr;
    static QString defaultStyleName();
};
 
#endif // QGSMAPLAYERSTYLEMANAGER_H