qgsfieldconditionalformatwidget.h

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/***************************************************************************
    qgsfieldconditionalformatwidget.h
    ---------------------
    begin                : August 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 QGSFIELDCONDITIONALFORMATWIDGET_H
#define QGSFIELDCONDITIONALFORMATWIDGET_H

#include <QWidget>
#include "qgis.h"
#include <QStandardItemModel>
#include <QStandardItem>

#include "ui_qgsfieldconditionalformatwidget.h"
#include "qgsconditionalstyle.h"
#include "qgis_gui.h"

class GUI_EXPORT QgsFieldConditionalFormatWidget : public QWidget, private Ui::QgsFieldConditionalWidget
{
    Q_OBJECT
  public:

    explicit QgsFieldConditionalFormatWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr );

    void viewRules();

    void setLayer( QgsVectorLayer *layer );

    void editStyle( int index, const QgsConditionalStyle &style );

    void loadStyle( const QgsConditionalStyle &style );

    void reset();

    void setPresets( const QList<QgsConditionalStyle> &styles );

    QList<QgsConditionalStyle> defaultPresets() const;

  signals:

    void rulesUpdated( const QString &fieldName );

  public slots:

  private:
    QgsVectorLayer *mLayer = nullptr;
    int mEditIndex = 0;
    bool mEditing = false;
    QStandardItemModel *mModel = nullptr;
    QStandardItemModel *mPresetsModel = nullptr;
    QList<QgsConditionalStyle> mPresets;

    QList<QgsConditionalStyle> getStyles();

    void setFormattingFromStyle( const QgsConditionalStyle &style );

  private slots:
    void setExpression();
    void presetSet( int index );
    bool isCustomSet();
    void ruleClicked( const QModelIndex &index );
    void reloadStyles();
    void cancelRule();
    void deleteRule();
    void saveRule();
    void addNewRule();
    void fieldChanged( const QString &fieldName );

};

#endif // QGSFIELDCONDITIONALFORMATWIDGET_H