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 <QStandardItemModel>
#include <QStandardItem>
#include "qgspanelwidget.h"
#include "qgspanelwidgetstack.h"

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

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

    explicit QgsFieldConditionalFormatWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr );

    Q_DECL_DEPRECATED void viewRules() SIP_DEPRECATED;

    void setLayer( QgsVectorLayer *layer );

    // TODO QGIS 4.0 - make private

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

    Q_DECL_DEPRECATED void loadStyle( const QgsConditionalStyle &style ) SIP_DEPRECATED;

    Q_DECL_DEPRECATED void reset() SIP_DEPRECATED;

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

    static QList<QgsConditionalStyle> defaultPresets();

  signals:

    void rulesUpdated( const QString &fieldName );

  private:
    QgsVectorLayer *mLayer = nullptr;
    int mEditIndex = -1;
    bool mEditing = false;
    bool mPanelHandled = false;
    QStandardItemModel *mModel = nullptr;

    QList<QgsConditionalStyle> mPresets;

    QList<QgsConditionalStyle> getStyles();

  private slots:

    void ruleClicked( const QModelIndex &index );
    void reloadStyles();
    void addNewRule();
    void fieldChanged( const QString &fieldName );
    void deleteCurrentRule();

};

class GUI_EXPORT QgsEditConditionalFormatRuleWidget : public QgsPanelWidget, private Ui::QgsEditConditionalRuleWidget
{
    Q_OBJECT

  public:

    explicit QgsEditConditionalFormatRuleWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr );

    void setLayer( QgsVectorLayer *layer );

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

    void loadStyle( const QgsConditionalStyle &style );

    QgsConditionalStyle currentStyle() const;

    void setRule( const QString &rule );

  signals:

    void ruleSaved();

    void ruleDeleted();

    void canceled();

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

    void setFormattingFromStyle( const QgsConditionalStyle &style );

  private slots:
    void setExpression();
    void presetSet( int index );
    bool isCustomSet();

};

#endif // QGSFIELDCONDITIONALFORMATWIDGET_H