qgsdualview.h

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/***************************************************************************
    qgsdualview.h
     --------------------------------------
    Date                 : 10.2.2013
    Copyright            : (C) 2013 Matthias Kuhn
    Email                : matthias at opengis 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 QGSDUALVIEW_H
#define QGSDUALVIEW_H

#include <QStackedWidget>
#include "qgis.h"

#include "ui_qgsdualviewbase.h"

#include "qgsattributeeditorcontext.h"
#include "qgsattributetablefiltermodel.h"
#include "qgsdistancearea.h"
#include "qgsattributeform.h"
#include "qgis_gui.h"

class QgsFeatureRequest;
class QSignalMapper;
class QgsMapLayerAction;
class QgsScrollArea;

class GUI_EXPORT QgsDualView : public QStackedWidget, private Ui::QgsDualViewBase
{
    Q_OBJECT

  public:

    enum ViewMode
    {

      AttributeTable = 0,

      AttributeEditor = 1
    };

    Q_ENUM( ViewMode );

    explicit QgsDualView( QWidget *parent SIP_TRANSFERTHIS = nullptr );

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

    void setView( ViewMode view );

    ViewMode view() const;

    void setFilterMode( QgsAttributeTableFilterModel::FilterMode filterMode );

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

    void setSelectedOnTop( bool selectedOnTop );

    int featureCount();

    int filteredFeatureCount();

    void setFilteredFeatures( const QgsFeatureIds &filteredFeatures );

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

    QgsAttributeTableModel *masterModel() const { return mMasterModel; }

    void setRequest( const QgsFeatureRequest &request );

    void setFeatureSelectionManager( QgsIFeatureSelectionManager *featureSelectionManager );

    QgsAttributeTableView *tableView() { return mTableView; }

    void setAttributeTableConfig( const QgsAttributeTableConfig &config );

    void setSortExpression( const QString &sortExpression, Qt::SortOrder sortOrder = Qt::AscendingOrder );

    QString sortExpression() const;

  public slots:

    void setCurrentEditSelection( const QgsFeatureIds &fids );

    bool saveEditChanges();

    void openConditionalStyles();

    void setMultiEditEnabled( bool enabled );

    void toggleSearchMode( bool enabled );

    void copyCellContent() const;

    void cancelProgress( );

  signals:

    void displayExpressionChanged( const QString &expression );

    void filterChanged();

    void filterExpressionSet( const QString &expression, QgsAttributeForm::FilterType type );

    void formModeChanged( QgsAttributeForm::Mode mode );

    void showContextMenuExternally( QgsActionMenu *menu, const QgsFeatureId fid );

  protected:
    void hideEvent( QHideEvent *event ) override;

  private slots:

    void mFeatureList_aboutToChangeEditSelection( bool &ok );

    void mFeatureList_currentEditSelectionChanged( const QgsFeature &feat );

    void previewExpressionBuilder();

    void previewColumnChanged( QAction *previewAction, const QString &expression );

    void viewWillShowContextMenu( QMenu *menu, const QModelIndex &atIndex );

    void widgetWillShowContextMenu( QgsActionMenu *menu, const QModelIndex &atIndex );

    void showViewHeaderMenu( QPoint point );

    void organizeColumns();

    void tableColumnResized( int column, int width );

    void hideColumn();

    void resizeColumn();

    void autosizeColumn();

    void modifySort();

    void previewExpressionChanged( const QString &expression );

    void onSortColumnChanged();

    void sortByPreviewExpression();

    void updateSelectedFeatures();

    void extentChanged();

    void featureFormAttributeChanged( const QString &attribute, const QVariant &value, bool attributeChanged );

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

    virtual void finished();

    void zoomToCurrentFeature();
    void panToCurrentFeature();

    void flashCurrentFeature();

    void rebuildFullLayerCache();

  private:

    void columnBoxInit();
    void initLayerCache( bool cacheGeometry );
    void initModels( QgsMapCanvas *mapCanvas, const QgsFeatureRequest &request, bool loadFeatures );
    void restoreRecentDisplayExpressions();
    void saveRecentDisplayExpressions() const;
    void setDisplayExpression( const QString &expression );
    void insertRecentlyUsedDisplayExpression( const QString &expression );

    QgsAttributeEditorContext mEditorContext;
    QgsAttributeTableModel *mMasterModel = nullptr;
    QgsAttributeTableFilterModel *mFilterModel = nullptr;
    QgsFeatureListModel *mFeatureListModel = nullptr;
    QgsAttributeForm *mAttributeForm = nullptr;
    QMenu *mPreviewColumnsMenu = nullptr;
    QMenu *mPreviewActionMenu = nullptr;
    QAction *mLastDisplayExpressionAction = nullptr;
    QMenu *mHorizontalHeaderMenu = nullptr;
    QgsVectorLayerCache *mLayerCache = nullptr;
    QPointer< QgsVectorLayer > mLayer = nullptr;
    QProgressDialog *mProgressDlg = nullptr;
    QgsIFeatureSelectionManager *mFeatureSelectionManager = nullptr;
    QgsDistanceArea mDistanceArea;
    QString mDisplayExpression;
    QgsAttributeTableConfig mConfig;
    QgsScrollArea *mAttributeEditorScrollArea = nullptr;
    QgsMapCanvas *mMapCanvas = nullptr;
    // If the current feature is set, while the form is still not initialized
    // we will temporarily save it in here and set it on init
    QgsFeature mTempAttributeFormFeature;

    friend class TestQgsDualView;
    friend class TestQgsAttributeTable;
};

class GUI_EXPORT QgsAttributeTableAction : public QAction
{
    Q_OBJECT

  public:

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

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

  private:
    QgsDualView *mDualView = nullptr;
    QUuid 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 = nullptr;
    QgsMapLayerAction *mAction = nullptr;
    QModelIndex mFieldIdx;
};

Q_DECLARE_METATYPE( QModelIndex );

#endif // QGSDUALVIEW_H