qgsdualview.h

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/***************************************************************************
    qgsdualview.h
     --------------------------------------
    Date                 : 10.2.2013
    Copyright            : (C) 2013 Matthias Kuhn
    Email                : matthias dot kuhn at gmx dot ch
 ***************************************************************************
 *                                                                         *
 *   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 QGSFEATURELIST_H
#define QGSFEATURELIST_H

#include <QStackedWidget>

#include "ui_qgsdualviewbase.h"

#include "qgsattributeeditorcontext.h"
#include "qgsattributetablefiltermodel.h"
#include "qgscachedfeatureiterator.h"
#include "qgsdistancearea.h"

class QgsAttributeForm;
class QgsFeatureRequest;
class QSignalMapper;
class QgsMapLayerAction;

class GUI_EXPORT QgsDualView : public QStackedWidget, private Ui::QgsDualViewBase
{
    Q_OBJECT
    Q_ENUMS( ViewMode )

  public:

    enum ViewMode
    {
      AttributeTable = 0,
      AttributeEditor = 1
    };

    explicit QgsDualView( QWidget* parent = 0 );

    void init( QgsVectorLayer* layer, QgsMapCanvas* mapCanvas, const QgsFeatureRequest& request = QgsFeatureRequest(), QgsAttributeEditorContext context = QgsAttributeEditorContext() );

    void setView( ViewMode view );

    void setFilterMode( QgsAttributeTableFilterModel::FilterMode filterMode );

    QgsAttributeTableFilterModel::FilterMode filterMode() { return mFilterModel->filterMode(); }

    void setSelectedOnTop( bool selectedOnTop );

    int featureCount();

    int filteredFeatureCount();

    void setFilteredFeatures( QgsFeatureIds filteredFeatures );

    QgsFeatureIds filteredFeatures() { return mFilterModel->filteredFeatures(); }

    QgsAttributeTableModel* masterModel() const { return mMasterModel; }

    void setRequest( const QgsFeatureRequest& request );

    void setFeatureSelectionManager( QgsIFeatureSelectionManager* featureSelectionManager );

  protected:
    void columnBoxInit();

  public slots:
    void setCurrentEditSelection( const QgsFeatureIds& fids );

    bool saveEditChanges();

  signals:
    void displayExpressionChanged( const QString expression );

    void filterChanged();

  private slots:

    void on_mFeatureList_aboutToChangeEditSelection( bool& ok );

    void on_mFeatureList_currentEditSelectionChanged( const QgsFeature& feat );

    void previewExpressionBuilder();

    void previewColumnChanged( QObject* previewAction );

    void viewWillShowContextMenu( QMenu* menu, QModelIndex atIndex );

    void previewExpressionChanged( const QString expression );

    void featureFormAttributeChanged();

    virtual void progress( int i, bool& cancel );

    virtual void finished();

  private:
    void initLayerCache( QgsVectorLayer *layer );
    void initModels( QgsMapCanvas* mapCanvas, const QgsFeatureRequest& request );

    QgsAttributeEditorContext mEditorContext;
    QgsAttributeTableModel* mMasterModel;
    QgsAttributeTableFilterModel* mFilterModel;
    QgsFeatureListModel* mFeatureListModel;
    QgsAttributeForm* mAttributeForm;
    QgsCachedFeatureIterator* mFeatureCache;
    QSignalMapper* mPreviewActionMapper;
    QMenu* mPreviewColumnsMenu;
    QgsVectorLayerCache* mLayerCache;
    QProgressDialog* mProgressDlg;
    QgsIFeatureSelectionManager* mFeatureSelectionManager;
    QgsDistanceArea mDistanceArea;
    QString mDisplayExpression;

    friend class TestQgsDualView;
};

class GUI_EXPORT QgsAttributeTableAction : public QAction
{
    Q_OBJECT

  public:
    QgsAttributeTableAction( const QString &name, QgsDualView *dualView, int action, const QModelIndex &fieldIdx ) :
        QAction( name, dualView ), mDualView( dualView ), mAction( action ), mFieldIdx( fieldIdx )
    {}

  public slots:
    void execute();
    void featureForm();

  private:
    QgsDualView* mDualView;
    int mAction;
    QModelIndex mFieldIdx;
};

class GUI_EXPORT QgsAttributeTableMapLayerAction : public QAction
{
    Q_OBJECT

  public:
    QgsAttributeTableMapLayerAction( const QString &name, QgsDualView *dualView, QgsMapLayerAction* action, const QModelIndex &fieldIdx ) :
        QAction( name, dualView ), mDualView( dualView ), mAction( action ), mFieldIdx( fieldIdx )
    {}

  public slots:
    void execute();

  private:
    QgsDualView* mDualView;
    QgsMapLayerAction* mAction;
    QModelIndex mFieldIdx;
};

#endif // QGSFEATURELIST_H