qgslayerdefinition.h

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/***************************************************************************
    qgslayerdefinition.h
    ---------------------
    begin                : January 2015
    copyright            : (C) 2015 by Nathan Woodrow
    email                : woodrow dot nathan 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 QGSLAYERDEFINITION_H
#define QGSLAYERDEFINITION_H

#include "qgslayertreegroup.h"

class CORE_EXPORT QgsLayerDefinition
{
  public:
    static bool loadLayerDefinition( const QString & path, QgsLayerTreeGroup* rootGroup, QString &errorMessage );
    static bool loadLayerDefinition( QDomDocument doc, QgsLayerTreeGroup* rootGroup, QString &errorMessage, const QString& relativeBasePath = QString() );
    static bool exportLayerDefinition( QString path, const QList<QgsLayerTreeNode*>& selectedTreeNodes, QString &errorMessage );
    static bool exportLayerDefinition( QDomDocument doc, const QList<QgsLayerTreeNode*>& selectedTreeNodes, QString &errorMessage, const QString& relativeBasePath = QString() );

    class CORE_EXPORT DependencySorter
    {
      public:
        DependencySorter( const QDomDocument& doc );

        DependencySorter( const QString& fileName );

        QVector<QDomNode> sortedLayerNodes() const { return mSortedLayerNodes; }

        QStringList sortedLayerIds() const { return mSortedLayerIds; }

        bool hasCycle() const { return mHasCycle; }

        bool hasMissingDependency() const { return mHasMissingDependency; }

      private:
        QVector<QDomNode> mSortedLayerNodes;
        QStringList mSortedLayerIds;
        bool mHasCycle;
        bool mHasMissingDependency;
        void init( const QDomDocument& doc );
    };
};

#endif // QGSLAYERDEFINITION_H