/**
 * @RDE_HEADER@
 * An Input Widget for coordinates
 * $Id$
 * $HeadURL$
 * $Author$
 *
 * Created by Christian Ehrlicher, SLSE, 2016-09-08
 */
#pragma once

#include <LtsCoordTrans/ltscoordwidget_export.h>
#include <LtsCoordTrans/lts_coord_trans.h>
#include <QWidget>

class QToolButton;

namespace LtsCoordWidget
{
class LtsCoordInputWidgetHandler;
class LTSCOORDWIDGET_EXPORT LtsCoordWidget : public QWidget
{
  Q_OBJECT
public:
  enum class DisplayType
  {
    MGRS5,// display coordinate as MGRS with 5 digits (= m)
    MGRS7,// display coordinate as MGRS with 7 digits (= mm)
    UTM,  // display coordinate as UTM
    WGS84, // display coordinate as WGS84 (degree)
    MGRS = DisplayType::MGRS5 // display coordinate as MGRS (default precision = MGRS5)
  };
  Q_ENUM(DisplayType)
  Q_PROPERTY(DisplayType displayType READ displayType WRITE setDisplayType)
  Q_PROPERTY(bool withResetButton READ withResetButton WRITE setWithResetButton)
  Q_PROPERTY(bool showToolTip READ showToolTip WRITE setShowToolTip)
  Q_PROPERTY(bool mgrsSquareEditable READ mgrsSquareEditable WRITE setMgrsSquareEditable)

  /**
   * @brief Create a new LtsCoordWidget with default display type (= MGRS)
   */
  explicit LtsCoordWidget(QWidget *parent = nullptr)
    : LtsCoordWidget(LtsCoordWidget::DisplayType::MGRS, parent)
  {}

  /**
   * @brief Create a new LtsCoordWidget with given display type
   */
  explicit LtsCoordWidget(DisplayType dt, QWidget *parent = nullptr);

  QPointF coordinate() const;
  DisplayType displayType() const;
  bool withResetButton() const;
  bool showToolTip() const;
  bool mgrsSquareEditable() const;
  bool event(QEvent *event) override;
public Q_SLOTS:
  /**
   * @brief Set the current visible coordinate
   * @param geoCoord the coordinate to display (in wgs84, radian)
   * @param bUseAsDefaultValue if true, the reset button will be visible and reset to the given value if pressed
   */
  void setCoordinate(const QPointF &geoCoord, bool bUseAsDefaultValue = true);
  void setCoordinate(double lon, double lat, bool bUseAsDefaultValue = true);
  void setDisplayType(LtsCoordWidget::DisplayType dt);
  void setWithResetButton(bool bWith);
  void setShowToolTip(bool bShow);
  void setMgrsSquareEditable(bool bEditable);
  void setWithSurroundingMgrsSquares(bool bEnable);
  void setMgrsSquares(const QVector<LtsCoordTrans::UtmCoordinate> &geoCoords);
  void clear();

Q_SIGNALS:
  void coordinateChanged(const QPointF &newGeoCoord);
  void invalidCoordinate();
private:
  void rebuildUi();
  void updateToolTip();
private Q_SLOTS:
  void onResetToDefaultCoordinate();
private:
  bool m_bWithResetButton = false;
  bool m_bShowToolTip = true;
  bool m_bMgrsSquareEditable = false;
  LtsCoordWidget::DisplayType m_displayType = LtsCoordWidget::DisplayType::MGRS;
  LtsCoordInputWidgetHandler *m_inputWidgetHandler = nullptr;
  QPointF m_coordinate;
  QPointF m_defaultCoordinate;
};
}