nav_object_database.cpp

/***************************************************************************
 *   Copyright (C) 2010 by David S. Register                               *
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, see <https://www.gnu.org/licenses/>. *
 **************************************************************************/
 
#include <wx/string.h>
 
#include "model/navobj_db.h"
#include "model/nav_object_database.h"
#include "model/navutil_base.h"
#include "model/route.h"
#include "model/routeman.h"
#include "model/select.h"
#include "model/track.h"
 
#ifdef __ANDROID__
#include <QDebug>
#endif
 
NavObjectCollection1::NavObjectCollection1() : pugi::xml_document() {}
 
NavObjectCollection1::~NavObjectCollection1() {}
 
RoutePoint *GPXLoadWaypoint1(pugi::xml_node &wpt_node, wxString def_symbol_name,
                             wxString GUID, bool b_fullviz, bool b_layer,
                             bool b_layerviz, int layer_id, bool b_nameviz) {
  bool bviz = false;
  bool bviz_name = false;
  bool bshared = false;
  bool b_propvizname = false;
  bool b_propviz = false;
 
  wxString SymString = def_symbol_name;  // default icon
  wxString NameString;
  wxString DescString;
  wxString TideStation;
  double plan_speed = 0.0;
  wxString etd;
  wxString TypeString;
  wxString GuidString = GUID;  // default
  wxString TimeString;
  wxDateTime dt;
  RoutePoint *pWP;
 
  HyperlinkList *linklist = NULL;
 
  double rlat = wpt_node.attribute("lat").as_double();
  double rlon = wpt_node.attribute("lon").as_double();
  double ArrivalRadius = 0;
  int l_iWaypointRangeRingsNumber = -1;
  float l_fWaypointRangeRingsStep = -1;
  int l_pWaypointRangeRingsStepUnits = -1;
  bool l_bWaypointRangeRingsVisible = false;
  long l_iWaypointScaleMin = 2147483646;
  long l_iWaypoinScaleMax = 0;
  bool l_bWaypointUseScale = false;
  wxColour l_wxcWaypointRangeRingsColour;
  l_wxcWaypointRangeRingsColour.Set("#FFFFFF");
 
  for (pugi::xml_node child = wpt_node.first_child(); child != 0;
       child = child.next_sibling()) {
    const char *pcn = child.name();
 
    if (!strcmp(pcn, "sym")) {
      SymString = wxString::FromUTF8(child.first_child().value());
    } else if (!strcmp(pcn, "time"))
      TimeString = wxString::FromUTF8(child.first_child().value());
 
    else if (!strcmp(pcn, "name")) {
      NameString = wxString::FromUTF8(child.first_child().value());
      if (NameString.StartsWith("@~~")) {
        // Convert the legacy tidal event definition and change the name so
        // that it does not kick in next time and cause overiding subsequent
        // changes
        TideStation = NameString.Right(NameString.length() - 3);
        NameString.Replace("@~~", "@-~");
      }
    }
 
    else if (!strcmp(pcn, "desc")) {
      DescString = wxString::FromUTF8(child.first_child().value());
    }
 
    else if (!strcmp(pcn, "type")) {
      TypeString = wxString::FromUTF8(child.first_child().value());
    }
 
    else  // Read hyperlink
      if (!strcmp(pcn, "link")) {
        wxString HrefString;
        wxString HrefTextString;
        wxString HrefTypeString;
        if (linklist == NULL) linklist = new HyperlinkList;
        HrefString = wxString::FromUTF8(child.first_attribute().value());
 
        for (pugi::xml_node child1 = child.first_child(); child1;
             child1 = child1.next_sibling()) {
          wxString LinkString = wxString::FromUTF8(child1.name());
 
          if (LinkString == "text")
            HrefTextString = wxString::FromUTF8(child1.first_child().value());
          if (LinkString == "type")
            HrefTypeString = wxString::FromUTF8(child1.first_child().value());
        }
 
        Hyperlink *link = new Hyperlink;
        link->Link = HrefString;
        link->DescrText = HrefTextString;
        link->LType = HrefTypeString;
        linklist->push_back(link);
      }
 
      //    OpenCPN Extensions....
      else if (!strcmp(pcn, "extensions")) {
        for (pugi::xml_node ext_child = child.first_child(); ext_child;
             ext_child = ext_child.next_sibling()) {
          wxString ext_name = wxString::FromUTF8(ext_child.name());
          if (ext_name == "opencpn:guid") {
            GuidString = wxString::FromUTF8(ext_child.first_child().value());
          } else if (ext_name == "opencpn:viz") {
            b_propviz = true;
            wxString s = wxString::FromUTF8(ext_child.first_child().value());
            long v = 0;
            if (s.ToLong(&v)) bviz = (v != 0);
          } else if (ext_name == "opencpn:viz_name") {
            b_propvizname = true;
            wxString s = wxString::FromUTF8(ext_child.first_child().value());
            long v = 0;
            if (s.ToLong(&v)) bviz_name = (v != 0);
          } else if (ext_name == "opencpn:shared") {
            wxString s = wxString::FromUTF8(ext_child.first_child().value());
            long v = 0;
            if (s.ToLong(&v)) bshared = (v != 0);
          }
          if (ext_name == "opencpn:arrival_radius") {
            wxString::FromUTF8(ext_child.first_child().value())
                .ToDouble(&ArrivalRadius);
          }
          if (ext_name == "opencpn:waypoint_range_rings") {
            for (pugi::xml_attribute attr = ext_child.first_attribute(); attr;
                 attr = attr.next_attribute()) {
              if (wxString::FromUTF8(attr.name()) == "number")
                l_iWaypointRangeRingsNumber = attr.as_int();
              else if (wxString::FromUTF8(attr.name()) == "step")
                l_fWaypointRangeRingsStep = attr.as_float();
              else if (wxString::FromUTF8(attr.name()) == "units")
                l_pWaypointRangeRingsStepUnits = attr.as_int();
              else if (wxString::FromUTF8(attr.name()) == "visible")
                l_bWaypointRangeRingsVisible = attr.as_bool();
              else if (wxString::FromUTF8(attr.name()) == "colour")
                l_wxcWaypointRangeRingsColour.Set(
                    wxString::FromUTF8(attr.as_string()));
            }
          }
          if (ext_name == "opencpn:scale_min_max") {
            for (pugi::xml_attribute attr = ext_child.first_attribute(); attr;
                 attr = attr.next_attribute()) {
              if (wxString::FromUTF8(attr.name()) == "UseScale")
                l_bWaypointUseScale = attr.as_bool();
              else if (wxString::FromUTF8(attr.name()) == "ScaleMin")
                l_iWaypointScaleMin = attr.as_int();
              else if (wxString::FromUTF8(attr.name()) == "ScaleMax")
                l_iWaypoinScaleMax = attr.as_float();
            }
          }
          if (ext_name == "opencpn:tidestation") {
            TideStation = wxString::FromUTF8(ext_child.first_child().value());
          }
          if (ext_name == "opencpn:rte_properties") {
            for (pugi::xml_attribute attr = ext_child.first_attribute(); attr;
                 attr = attr.next_attribute()) {
              if (!strcmp(attr.name(), "planned_speed"))
                plan_speed = attr.as_double();
              else if (!strcmp(attr.name(), "etd"))
                // The timestamp is serialized without timezone information,
                // e.g., etd="2025-04-03T20:00:27"
                // So assume the ETD has always been saved in UTC.
                etd = attr.as_string();
            }
          }
        }  // for
      }  // extensions
  }  // for
 
  // Create waypoint
 
  if (b_layer) {
    if (GuidString.IsEmpty()) GuidString = pWayPointMan->CreateGUID(NULL);
  }
 
  pWP = new RoutePoint(rlat, rlon, SymString, NameString, GuidString,
                       false);  // do not add to global WP list yet...
  pWP->m_MarkDescription = DescString;
  pWP->m_TideStation = TideStation;
  pWP->m_bIsolatedMark = bshared;  // This is an isolated mark
  pWP->SetWaypointArrivalRadius(ArrivalRadius);
  pWP->SetWaypointRangeRingsNumber(l_iWaypointRangeRingsNumber);
  pWP->SetWaypointRangeRingsStep(l_fWaypointRangeRingsStep);
  pWP->SetWaypointRangeRingsStepUnits(l_pWaypointRangeRingsStepUnits);
  pWP->SetShowWaypointRangeRings(l_bWaypointRangeRingsVisible);
 
  // Migrate from O4.x XML format.
  // In O5, the attribute "range rings visible" is synonymous with ( "range
  // rings number" != 0 ) So, if we see an attribute "visible"=false in
  // importing from XML, we must set "number" = 0 to be consistent
  if (!l_bWaypointRangeRingsVisible) pWP->SetWaypointRangeRingsNumber(0);
 
  pWP->SetWaypointRangeRingsColour(l_wxcWaypointRangeRingsColour);
  pWP->SetScaMin(l_iWaypointScaleMin);
  pWP->SetScaMax(l_iWaypoinScaleMax);
  pWP->SetUseSca(l_bWaypointUseScale);
  pWP->SetPlannedSpeed(plan_speed);
  pWP->SetETD(etd);
 
  pWP->m_bShowNameData = bviz_name;
  if (b_propvizname)
    pWP->m_bShowName = bviz_name;
  else if (b_fullviz)
    pWP->m_bShowName = true;
  else
    pWP->m_bShowName = false;
 
  // Special case handling of un-named points in a route
  if (!b_nameviz && !b_propvizname) pWP->m_bShowName = false;
 
  if (b_propviz)
    pWP->m_bIsVisible = bviz;
  else if (b_fullviz)
    pWP->m_bIsVisible = true;
 
  if (b_layer) {
    pWP->m_bIsInLayer = true;
    pWP->m_LayerID = layer_id;
    pWP->m_bIsVisible = b_layerviz;
    pWP->SetListed(false);
  }
 
  pWP->SetShared(bshared);
 
  if (TimeString.Len()) {
    pWP->m_timestring = TimeString;
    pWP->SetCreateTime(wxInvalidDateTime);  // cause deferred timestamp parsing
  }
 
  if (linklist) {
    delete pWP->m_HyperlinkList;  // created in RoutePoint ctor
    pWP->m_HyperlinkList = linklist;
  }
 
  return pWP;
}
 
static TrackPoint *GPXLoadTrackPoint1(pugi::xml_node &wpt_node) {
  wxString TimeString;
 
  double rlat = wpt_node.attribute("lat").as_double();
  double rlon = wpt_node.attribute("lon").as_double();
 
  for (pugi::xml_node child = wpt_node.first_child(); child != 0;
       child = child.next_sibling()) {
    const char *pcn = child.name();
    if (!strcmp(pcn, "time"))
      TimeString = wxString::FromUTF8(child.first_child().value());
 
    //    OpenCPN Extensions....
    else if (!strcmp(pcn, "extensions")) {
      for (pugi::xml_node ext_child = child.first_child(); ext_child;
           ext_child = ext_child.next_sibling()) {
        wxString ext_name = wxString::FromUTF8(ext_child.name());
        if (ext_name == "opencpn:action") {
        }
      }  // for
    }  // extensions
  }  // for
 
  // Create trackpoint
  return new TrackPoint(rlat, rlon, TimeString);
}
 
Track *GPXLoadTrack1(pugi::xml_node &trk_node, bool b_fullviz, bool b_layer,
                     bool b_layerviz, int layer_id) {
  wxString TrackName;
  wxString DescString;
  unsigned short int GPXSeg;
  bool b_propviz = false;
  bool b_viz = true;
  Track *pTentTrack = NULL;
  HyperlinkList *linklist = NULL;
 
  wxString Name = wxString::FromUTF8(trk_node.name());
  if (Name == "trk") {
    pTentTrack = new Track();
    GPXSeg = 0;
 
    TrackPoint *pWp = NULL;
 
    for (pugi::xml_node tschild = trk_node.first_child(); tschild;
         tschild = tschild.next_sibling()) {
      wxString ChildName = wxString::FromUTF8(tschild.name());
      if (ChildName == "trkseg") {
        GPXSeg += 1;
 
        //    Official GPX spec calls for trkseg to have children trkpt
        for (pugi::xml_node tpchild = tschild.first_child(); tpchild;
             tpchild = tpchild.next_sibling()) {
          wxString tpChildName = wxString::FromUTF8(tpchild.name());
          if (tpChildName == "trkpt") {
            pWp = ::GPXLoadTrackPoint1(tpchild);
            if (pWp) {
              pTentTrack->AddPoint(pWp);  // defer BBox calculation
              pWp->m_GPXTrkSegNo = GPXSeg;
            }
          }
        }
      } else if (ChildName == "name")
        TrackName = wxString::FromUTF8(tschild.first_child().value());
      else if (ChildName == "desc")
        DescString = wxString::FromUTF8(tschild.first_child().value());
      else
 
          if (ChildName == "link") {
        wxString HrefString;
        wxString HrefTextString;
        wxString HrefTypeString;
        if (linklist == NULL) linklist = new HyperlinkList;
        HrefString = wxString::FromUTF8(tschild.first_attribute().value());
 
        for (pugi::xml_node child1 = tschild.first_child(); child1;
             child1 = child1.next_sibling()) {
          wxString LinkString = wxString::FromUTF8(child1.name());
 
          if (LinkString == "text")
            HrefTextString = wxString::FromUTF8(child1.first_child().value());
          if (LinkString == "type")
            HrefTypeString = wxString::FromUTF8(child1.first_child().value());
        }
 
        Hyperlink *link = new Hyperlink;
        link->Link = HrefString;
        link->DescrText = HrefTextString;
        link->LType = HrefTypeString;
        linklist->push_back(link);
      }
 
      else if (ChildName == "extensions") {
        for (pugi::xml_node ext_child = tschild.first_child(); ext_child;
             ext_child = ext_child.next_sibling()) {
          wxString ext_name = wxString::FromUTF8(ext_child.name());
          if (ext_name == "opencpn:start") {
            pTentTrack->m_TrackStartString =
                wxString::FromUTF8(ext_child.first_child().value());
          } else if (ext_name == "opencpn:end") {
            pTentTrack->m_TrackEndString =
                wxString::FromUTF8(ext_child.first_child().value());
          }
 
          else if (ext_name == "opencpn:viz") {
            wxString viz = wxString::FromUTF8(ext_child.first_child().value());
            b_propviz = true;
            b_viz = (viz == "1");
          } else if (ext_name == "opencpn:style") {
            for (pugi::xml_attribute attr = ext_child.first_attribute(); attr;
                 attr = attr.next_attribute()) {
              if (!strcmp(attr.name(), "style"))
                pTentTrack->m_style = (wxPenStyle)attr.as_int();
              else if (!strcmp(attr.name(), "width"))
                pTentTrack->m_width = attr.as_int();
            }
          }
 
          else if (ext_name == "opencpn:guid") {
            pTentTrack->m_GUID =
                wxString::FromUTF8(ext_child.first_child().value());
          }
 
          else if (ext_name.EndsWith("TrackExtension"))  // Parse GPXX color
          {
            for (pugi::xml_node gpxx_child = ext_child.first_child();
                 gpxx_child; gpxx_child = gpxx_child.next_sibling()) {
              wxString gpxx_name = wxString::FromUTF8(gpxx_child.name());
              if (gpxx_name.EndsWith("DisplayColor"))
                pTentTrack->m_Colour =
                    wxString::FromUTF8(gpxx_child.first_child().value());
            }
          }
        }  // extensions
      }
    }
 
    pTentTrack->SetName(TrackName);
    pTentTrack->m_TrackDescription = DescString;
 
    if (b_propviz)
      pTentTrack->SetVisible(b_viz);
    else {
      if (b_fullviz) pTentTrack->SetVisible();
    }
 
    if (b_layer) {
      pTentTrack->SetVisible(b_layerviz);
      pTentTrack->m_bIsInLayer = true;
      pTentTrack->m_LayerID = layer_id;
      pTentTrack->SetListed(false);
    }
 
    pTentTrack->SetCurrentTrackSeg(GPXSeg);
  }
 
  if (linklist) {
    delete pTentTrack->m_TrackHyperlinkList;  // created in TrackPoint ctor
    pTentTrack->m_TrackHyperlinkList = linklist;
  }
 
  return pTentTrack;
}
 
Route *GPXLoadRoute1(pugi::xml_node &wpt_node, bool b_fullviz, bool b_layer,
                     bool b_layerviz, int layer_id, bool b_change,
                     bool load_points) {
  wxString RouteName;
  wxString DescString;
  bool b_propviz = false;
  bool b_propSWPviz = false;
  bool b_viz = true;
  bool swpViz = false;
  Route *pTentRoute = NULL;
 
  wxString Name = wxString::FromUTF8(wpt_node.name());
  if (Name == "rte") {
    pTentRoute = new Route();
    HyperlinkList *linklist = NULL;
 
    RoutePoint *pWp = NULL;
    bool route_existing = false;
    pTentRoute->m_TimeDisplayFormat = RTE_TIME_DISP_UTC;
 
    for (pugi::xml_node tschild = wpt_node.first_child(); tschild;
         tschild = tschild.next_sibling()) {
      wxString ChildName = wxString::FromUTF8(tschild.name());
 
      // load extentions first to determine if the route still exists
      if (ChildName == "extensions") {
        for (pugi::xml_node ext_child = tschild.first_child(); ext_child;
             ext_child = ext_child.next_sibling()) {
          wxString ext_name = wxString::FromUTF8(ext_child.name());
 
          if (ext_name == "opencpn:start") {
            pTentRoute->m_RouteStartString =
                wxString::FromUTF8(ext_child.first_child().value());
          } else if (ext_name == "opencpn:end") {
            pTentRoute->m_RouteEndString =
                wxString::FromUTF8(ext_child.first_child().value());
          }
 
          else if (ext_name == "opencpn:viz") {
            wxString viz = wxString::FromUTF8(ext_child.first_child().value());
            b_propviz = true;
            b_viz = (viz == "1");
          }
 
          else if (ext_name == "opencpn:sharedWPviz") {
            wxString viz = wxString::FromUTF8(ext_child.first_child().value());
            b_propSWPviz = true;
            swpViz = (viz == "1");
          } else if (ext_name == "opencpn:style") {
            for (pugi::xml_attribute attr = ext_child.first_attribute(); attr;
                 attr = attr.next_attribute()) {
              if (!strcmp(attr.name(), "style"))
                pTentRoute->m_style = (wxPenStyle)attr.as_int();
              else if (!strcmp(attr.name(), "width"))
                pTentRoute->m_width = attr.as_int();
            }
          }
 
          else if (ext_name == "opencpn:guid") {
            pTentRoute->m_GUID =
                wxString::FromUTF8(ext_child.first_child().value());
          }
 
          else if (ext_name == "opencpn:planned_speed") {
            pTentRoute->m_PlannedSpeed = atof(ext_child.first_child().value());
          }
 
          else if (ext_name == "opencpn:planned_departure") {
            ParseGPXDateTime(
                pTentRoute->m_PlannedDeparture,
                wxString::FromUTF8(ext_child.first_child().value()));
          }
 
          else if (ext_name == "opencpn:time_display") {
            pTentRoute->m_TimeDisplayFormat =
                wxString::FromUTF8(ext_child.first_child().value());
          } else if (ext_name.EndsWith("RouteExtension"))  // Parse GPXX color
          {
            for (pugi::xml_node gpxx_child = ext_child.first_child();
                 gpxx_child; gpxx_child = gpxx_child.next_sibling()) {
              wxString gpxx_name = wxString::FromUTF8(gpxx_child.name());
              if (gpxx_name.EndsWith("DisplayColor"))
                pTentRoute->m_Colour =
                    wxString::FromUTF8(gpxx_child.first_child().value());
            }
          }
        }
        if (!b_change) {
          if (RouteExists(pTentRoute->m_GUID)) {  // we are loading a different
                                                  // route with the same guid so
                                                  // let's generate a new guid
            pTentRoute->m_GUID = pWayPointMan->CreateGUID(NULL);
            route_existing = true;
          }
        }
      }  // extension
      else if (load_points && ChildName == "rtept") {
        RoutePoint *tpWp =
            ::GPXLoadWaypoint1(tschild, "square", "", b_fullviz, b_layer,
                               b_layerviz, layer_id, false);
        RoutePoint *erp = NULL;
        if (!b_layer) erp = ::WaypointExists(tpWp->m_GUID);
        // 1) if b_change is true, that means we are after crash - load the
        // route and points as found in source file 2) if route_existing, we are
        // loading a different route with the same guid. In this case load
        // points as found in
        // source file, changing the guid, but keep existing "isolated point" as
        // found in the DB
        // 3) in all other cases keep existing points if found and load new
        // points if not found
        bool new_wpt = true;
        if (b_change) {
          pWp = tpWp;
        } else {
          if (erp != NULL &&
              (!route_existing || (route_existing && tpWp->IsShared()))) {
            pWp = erp;
            new_wpt = false;
          } else {
            if (route_existing) tpWp->m_GUID = pWayPointMan->CreateGUID(NULL);
            pWp = tpWp;
          }
        }
 
        pTentRoute->AddPoint(pWp, false, true);  // defer BBox calculation
        pWp->m_bIsInRoute = true;                // Hack
 
        if (new_wpt) {
          if (erp == NULL) {
            pWayPointMan->AddRoutePoint(pWp);
          }
        } else {
          delete tpWp;
        }
      } else if (ChildName == "name") {
        RouteName = wxString::FromUTF8(tschild.first_child().value());
      } else if (ChildName == "desc") {
        DescString = wxString::FromUTF8(tschild.first_child().value());
      }
 
      if (ChildName == "link") {
        wxString HrefString;
        wxString HrefTextString;
        wxString HrefTypeString;
        if (linklist == NULL) linklist = new HyperlinkList;
        HrefString = wxString::FromUTF8(tschild.first_attribute().value());
 
        for (pugi::xml_node child1 = tschild.first_child(); child1;
             child1 = child1.next_sibling()) {
          wxString LinkString = wxString::FromUTF8(child1.name());
 
          if (LinkString == "text")
            HrefTextString = wxString::FromUTF8(child1.first_child().value());
          if (LinkString == "type")
            HrefTypeString = wxString::FromUTF8(child1.first_child().value());
        }
 
        Hyperlink *link = new Hyperlink;
        link->Link = HrefString;
        link->DescrText = HrefTextString;
        link->LType = HrefTypeString;
        linklist->push_back(link);
      }
 
      else
        // TODO: This is wrong, left here just to save data of the 3.3 beta
        // series users.
        if (ChildName.EndsWith("RouteExtension"))  // Parse GPXX color
        {
          for (pugi::xml_node gpxx_child = tschild.first_child(); gpxx_child;
               gpxx_child = gpxx_child.next_sibling()) {
            wxString gpxx_name = wxString::FromUTF8(gpxx_child.name());
            if (gpxx_name.EndsWith("DisplayColor"))
              pTentRoute->m_Colour =
                  wxString::FromUTF8(gpxx_child.first_child().value());
          }
        }
    }
 
    pTentRoute->m_RouteNameString = RouteName;
    pTentRoute->m_RouteDescription = DescString;
    if (linklist) {
      pTentRoute->m_HyperlinkList = linklist;
    }
 
    if (b_propviz) {
      pTentRoute->SetVisible(b_viz);
    } else if (b_fullviz) {
      pTentRoute->SetVisible();
    }
 
    if (b_propSWPviz) pTentRoute->SetSharedWPViz(swpViz);
 
    if (b_layer) {
      pTentRoute->SetVisible(b_layerviz);
      pTentRoute->m_bIsInLayer = true;
      pTentRoute->m_LayerID = layer_id;
      pTentRoute->SetListed(false);
    }
  }
 
  return pTentRoute;
}
 
static bool GPXCreateWpt(pugi::xml_node node, RoutePoint *pr,
                         unsigned int flags) {
  wxString s;
  pugi::xml_node child;
  pugi::xml_attribute attr;
 
  s.Printf("%.9f", pr->m_lat);
  node.append_attribute("lat") = s.mb_str();
  s.Printf("%.9f", pr->m_lon);
  node.append_attribute("lon") = s.mb_str();
 
  if (flags & OUT_TIME) {
    child = node.append_child("time");
    if (pr->m_timestring.Len())
      child.append_child(pugi::node_pcdata)
          .set_value(pr->m_timestring.mb_str());
    else {
      wxDateTime dt = pr->GetCreateTime();
      if (!dt.IsValid()) dt = wxDateTime::Now();
 
      wxString t = dt.ToUTC()
                       .FormatISODate()
                       .Append("T")
                       .Append(dt.ToUTC().FormatISOTime())
                       .Append("Z");
      child.append_child(pugi::node_pcdata).set_value(t.mb_str());
    }
  }
 
  if ((!pr->GetName().IsEmpty() && (flags & OUT_NAME)) ||
      (flags & OUT_NAME_FORCE)) {
    wxCharBuffer buffer = pr->GetName().ToUTF8();
    if (buffer.data()) {
      child = node.append_child("name");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  if ((!pr->GetDescription().IsEmpty() && (flags & OUT_DESC)) ||
      (flags & OUT_DESC_FORCE)) {
    wxCharBuffer buffer = pr->GetDescription().ToUTF8();
    if (buffer.data()) {
      child = node.append_child("desc");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  // Hyperlinks
  if (flags & OUT_HYPERLINKS) {
    HyperlinkList *linklist = pr->m_HyperlinkList;
    if (linklist && linklist->size()) {
      for (Hyperlink *link : *pr->m_HyperlinkList) {
        pugi::xml_node child_link = node.append_child("link");
        ;
        wxCharBuffer buffer = link->Link.ToUTF8();
        if (buffer.data()) child_link.append_attribute("href") = buffer.data();
 
        buffer = link->DescrText.ToUTF8();
        if (buffer.data()) {
          child = child_link.append_child("text");
          child.append_child(pugi::node_pcdata).set_value(buffer.data());
        }
 
        buffer = link->LType.ToUTF8();
        if (buffer.data() && strlen(buffer.data()) > 0) {
          child = child_link.append_child("type");
          child.append_child(pugi::node_pcdata).set_value(buffer.data());
        }
      }
    }
  }
 
  if (flags & OUT_SYM_FORCE) {
    child = node.append_child("sym");
    if (!pr->GetIconName().IsEmpty()) {
      child.append_child(pugi::node_pcdata)
          .set_value(pr->GetIconName().mb_str());
    } else {
      child.append_child("empty");
    }
  }
 
  if (flags & OUT_TYPE) {
    child = node.append_child("type");
    child.append_child(pugi::node_pcdata).set_value("WPT");
  }
 
  if ((flags & OUT_GUID) || (flags & OUT_VIZ) || (flags & OUT_VIZ_NAME) ||
      (flags & OUT_SHARED) || (flags & OUT_EXTENSION) ||
      (flags & OUT_TIDE_STATION) || (flags & OUT_RTE_PROPERTIES)) {
    pugi::xml_node child_ext = node.append_child("extensions");
 
    if (!pr->m_GUID.IsEmpty() && (flags & OUT_GUID)) {
      child = child_ext.append_child("opencpn:guid");
      child.append_child(pugi::node_pcdata).set_value(pr->m_GUID.mb_str());
    }
 
    if ((flags & OUT_VIZ) && !pr->m_bIsVisible) {
      child = child_ext.append_child("opencpn:viz");
      child.append_child(pugi::node_pcdata).set_value("0");
    }
 
    if ((flags & OUT_VIZ_NAME) && pr->m_bShowName) {
      child = child_ext.append_child("opencpn:viz_name");
      child.append_child(pugi::node_pcdata).set_value("1");
    }
 
    if ((flags & OUT_SHARED) && pr->IsShared()) {
      child = child_ext.append_child("opencpn:shared");
      child.append_child(pugi::node_pcdata).set_value("1");
    }
    if (flags & OUT_ARRIVAL_RADIUS) {
      child = child_ext.append_child("opencpn:arrival_radius");
      s.Printf("%.3f", pr->GetWaypointArrivalRadius());
      child.append_child(pugi::node_pcdata).set_value(s.mbc_str());
    }
    if (flags & OUT_WAYPOINT_RANGE_RINGS) {
      child = child_ext.append_child("opencpn:waypoint_range_rings");
      pugi::xml_attribute viz = child.append_attribute("visible");
      viz.set_value(pr->m_bShowWaypointRangeRings);
      pugi::xml_attribute number = child.append_attribute("number");
      number.set_value(pr->m_iWaypointRangeRingsNumber);
      pugi::xml_attribute step = child.append_attribute("step");
      step.set_value(pr->m_fWaypointRangeRingsStep);
      pugi::xml_attribute units = child.append_attribute("units");
      units.set_value(pr->m_iWaypointRangeRingsStepUnits);
 
      // Color specification in GPX file must be fully opaque
      if (pr->m_wxcWaypointRangeRingsColour.IsOk()) {
        pr->m_wxcWaypointRangeRingsColour.Set(
            pr->m_wxcWaypointRangeRingsColour.Red(),
            pr->m_wxcWaypointRangeRingsColour.Green(),
            pr->m_wxcWaypointRangeRingsColour.Blue(), wxALPHA_OPAQUE);
      } else {
        pr->m_wxcWaypointRangeRingsColour.Set(0, 0, 0, wxALPHA_OPAQUE);
      }
 
      pugi::xml_attribute colour = child.append_attribute("colour");
      colour.set_value(
          pr->m_wxcWaypointRangeRingsColour.GetAsString(wxC2S_HTML_SYNTAX)
              .utf8_str());
    }
    if (flags & OUT_WAYPOINT_SCALE) {
      child = child_ext.append_child("opencpn:scale_min_max");
      pugi::xml_attribute use = child.append_attribute("UseScale");
      use.set_value(pr->GetUseSca());
      pugi::xml_attribute sca = child.append_attribute("ScaleMin");
      sca.set_value(pr->GetScaMin());
      pugi::xml_attribute max = child.append_attribute("ScaleMax");
      max.set_value(pr->GetScaMax());
    }
    if ((flags & OUT_TIDE_STATION) && !pr->m_TideStation.IsEmpty()) {
      child = child_ext.append_child("opencpn:tidestation");
      child.append_child(pugi::node_pcdata)
          .set_value(pr->m_TideStation.mb_str());
    }
    if ((flags & OUT_RTE_PROPERTIES) &&
        (pr->GetPlannedSpeed() > 0.0001 || pr->m_manual_etd)) {
      child = child_ext.append_child("opencpn:rte_properties");
      if (pr->GetPlannedSpeed() > 0.0001) {
        pugi::xml_attribute use = child.append_attribute("planned_speed");
        use.set_value(
            wxString::Format("%.1lf", pr->GetPlannedSpeed()).mb_str());
      }
      if (pr->m_manual_etd && pr->GetManualETD().IsValid()) {
        pugi::xml_attribute use = child.append_attribute("etd");
        // Currently, the serialization format is YYYY-MM-DDTHH:MM:SS
        // without timezone information, e.g., etd="2025-04-03T20:00:27"
        // TODO: serialize using ISO 8601 or RFC 3339 format to ensure
        // the serialized date/time is unambiguous.
        use.set_value(pr->GetManualETD().FormatISOCombined().mb_str());
      }
    }
  }
 
  return true;
}
 
static bool GPXCreateTrkpt(pugi::xml_node node, TrackPoint *pt,
                           unsigned int flags) {
  wxString s;
  pugi::xml_node child;
  pugi::xml_attribute attr;
 
  s.Printf("%.9f", pt->m_lat);
  node.append_attribute("lat") = s.mb_str();
  s.Printf("%.9f", pt->m_lon);
  node.append_attribute("lon") = s.mb_str();
 
  if (flags & OUT_TIME && pt->HasValidTimestamp()) {
    child = node.append_child("time");
    child.append_child(pugi::node_pcdata).set_value(pt->GetTimeString());
  }
 
  return true;
}
 
static bool GPXCreateTrk(pugi::xml_node node, Track *pTrack,
                         unsigned int flags) {
  pugi::xml_node child;
 
  if (pTrack->GetName().Len()) {
    wxCharBuffer buffer = pTrack->GetName().ToUTF8();
    if (buffer.data()) {
      child = node.append_child("name");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  if (pTrack->m_TrackDescription.Len()) {
    wxCharBuffer buffer = pTrack->m_TrackDescription.ToUTF8();
    if (buffer.data()) {
      child = node.append_child("desc");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  // Hyperlinks
  HyperlinkList *linklist = pTrack->m_TrackHyperlinkList;
  if (linklist && linklist->size()) {
    for (Hyperlink *link : *linklist) {
      pugi::xml_node child_link = node.append_child("link");
      wxCharBuffer buffer = link->Link.ToUTF8();
      if (buffer.data()) child_link.append_attribute("href") = buffer.data();
 
      buffer = link->DescrText.ToUTF8();
      if (buffer.data()) {
        child = child_link.append_child("text");
        child.append_child(pugi::node_pcdata).set_value(buffer.data());
      }
 
      buffer = link->LType.ToUTF8();
      if (buffer.data() && strlen(buffer.data()) > 0) {
        child = child_link.append_child("type");
        child.append_child(pugi::node_pcdata).set_value(buffer.data());
      }
    }
  }
 
  pugi::xml_node child_ext = node.append_child("extensions");
 
  child = child_ext.append_child("opencpn:guid");
  child.append_child(pugi::node_pcdata).set_value(pTrack->m_GUID.mb_str());
 
  child = child_ext.append_child("opencpn:viz");
  child.append_child(pugi::node_pcdata)
      .set_value(pTrack->IsVisible() == true ? "1" : "0");
 
  if (pTrack->m_TrackStartString.Len()) {
    wxCharBuffer buffer = pTrack->m_TrackStartString.ToUTF8();
    if (buffer.data()) {
      child = child_ext.append_child("opencpn:start");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  if (pTrack->m_TrackEndString.Len()) {
    wxCharBuffer buffer = pTrack->m_TrackEndString.ToUTF8();
    if (buffer.data()) {
      child = child_ext.append_child("opencpn:end");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  if (pTrack->m_width != WIDTH_UNDEFINED ||
      pTrack->m_style != wxPENSTYLE_INVALID) {
    child = child_ext.append_child("opencpn:style");
 
    if (pTrack->m_width != WIDTH_UNDEFINED)
      child.append_attribute("width") = pTrack->m_width;
    if (pTrack->m_style != wxPENSTYLE_INVALID)
      child.append_attribute("style") = pTrack->m_style;
  }
 
  if (pTrack->m_Colour != "") {
    pugi::xml_node gpxx_ext = child_ext.append_child("gpxx:TrackExtension");
    child = gpxx_ext.append_child("gpxx:DisplayColor");
    child.append_child(pugi::node_pcdata).set_value(pTrack->m_Colour.mb_str());
  }
 
  if (flags & RT_OUT_NO_RTPTS) return true;
 
  int node2 = 0;
  TrackPoint *prp;
 
  unsigned short int GPXTrkSegNo1 = 1;
 
  do {
    unsigned short int GPXTrkSegNo2 = GPXTrkSegNo1;
 
    pugi::xml_node seg = node.append_child("trkseg");
 
    while (node2 < pTrack->GetnPoints()) {
      prp = pTrack->GetPoint(node2);
      GPXTrkSegNo1 = prp->m_GPXTrkSegNo;
      if (GPXTrkSegNo1 != GPXTrkSegNo2) break;
 
      GPXCreateTrkpt(seg.append_child("trkpt"), prp, OPT_TRACKPT);
 
      node2++;
    }
  } while (node2 < pTrack->GetnPoints());
 
  return true;
}
 
static bool GPXCreateRoute(pugi::xml_node node, Route *pRoute) {
  pugi::xml_node child;
 
  if (pRoute->m_RouteNameString.Len()) {
    wxCharBuffer buffer = pRoute->m_RouteNameString.ToUTF8();
    if (buffer.data()) {
      child = node.append_child("name");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  if (pRoute->m_RouteDescription.Len()) {
    wxCharBuffer buffer = pRoute->m_RouteDescription.ToUTF8();
    if (buffer.data()) {
      child = node.append_child("desc");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  // Hyperlinks
  HyperlinkList *linklist = pRoute->m_HyperlinkList;
  if (linklist && linklist->size()) {
    for (Hyperlink *link : *linklist) {
      pugi::xml_node child_link = node.append_child("link");
      wxCharBuffer buffer = link->Link.ToUTF8();
      if (buffer.data()) child_link.append_attribute("href") = buffer.data();
 
      buffer = link->DescrText.ToUTF8();
      if (buffer.data()) {
        child = child_link.append_child("text");
        child.append_child(pugi::node_pcdata).set_value(buffer.data());
      }
      buffer = link->LType.ToUTF8();
      if (buffer.data() && strlen(buffer.data()) > 0) {
        child = child_link.append_child("type");
        child.append_child(pugi::node_pcdata).set_value(buffer.data());
      }
    }
  }
 
  pugi::xml_node child_ext = node.append_child("extensions");
 
  child = child_ext.append_child("opencpn:guid");
  child.append_child(pugi::node_pcdata).set_value(pRoute->m_GUID.mb_str());
 
  child = child_ext.append_child("opencpn:viz");
  child.append_child(pugi::node_pcdata)
      .set_value(pRoute->IsVisible() == true ? "1" : "0");
 
  if (pRoute->ContainsSharedWP()) {
    child = child_ext.append_child("opencpn:sharedWPviz");
    child.append_child(pugi::node_pcdata)
        .set_value(pRoute->GetSharedWPViz() == true ? "1" : "0");
  }
 
  if (pRoute->m_RouteStartString.Len()) {
    wxCharBuffer buffer = pRoute->m_RouteStartString.ToUTF8();
    if (buffer.data()) {
      child = child_ext.append_child("opencpn:start");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  if (pRoute->m_RouteEndString.Len()) {
    wxCharBuffer buffer = pRoute->m_RouteEndString.ToUTF8();
    if (buffer.data()) {
      child = child_ext.append_child("opencpn:end");
      child.append_child(pugi::node_pcdata).set_value(buffer.data());
    }
  }
 
  if (pRoute->m_PlannedSpeed != ROUTE_DEFAULT_SPEED) {
    child = child_ext.append_child("opencpn:planned_speed");
    wxString s;
    s.Printf("%.2f", pRoute->m_PlannedSpeed);
    child.append_child(pugi::node_pcdata).set_value(s.mb_str());
  }
 
  if (pRoute->m_PlannedDeparture.IsValid()) {
    child = child_ext.append_child("opencpn:planned_departure");
    wxString t = pRoute->m_PlannedDeparture.FormatISODate()
                     .Append("T")
                     .Append(pRoute->m_PlannedDeparture.FormatISOTime())
                     .Append("Z");
    child.append_child(pugi::node_pcdata).set_value(t.mb_str());
  }
 
  child = child_ext.append_child("opencpn:time_display");
  child.append_child(pugi::node_pcdata)
      .set_value(pRoute->m_TimeDisplayFormat.mb_str());
 
  if (pRoute->m_width != WIDTH_UNDEFINED ||
      pRoute->m_style != wxPENSTYLE_INVALID) {
    child = child_ext.append_child("opencpn:style");
 
    if (pRoute->m_width != WIDTH_UNDEFINED)
      child.append_attribute("width") = pRoute->m_width;
    if (pRoute->m_style != wxPENSTYLE_INVALID)
      child.append_attribute("style") = pRoute->m_style;
  }
 
  pugi::xml_node gpxx_ext = child_ext.append_child("gpxx:RouteExtension");
  child = gpxx_ext.append_child("gpxx:IsAutoNamed");
  child.append_child(pugi::node_pcdata).set_value("false");
 
  if (pRoute->m_Colour != "") {
    child = gpxx_ext.append_child("gpxx:DisplayColor");
    child.append_child(pugi::node_pcdata).set_value(pRoute->m_Colour.mb_str());
  }
 
  RoutePointList *pRoutePointList = pRoute->pRoutePointList;
  for (RoutePoint *prp : *pRoutePointList) {
    GPXCreateWpt(node.append_child("rtept"), prp, OPT_ROUTEPT);
  }
  return true;
}
 
bool InsertRouteA(Route *pTentRoute, NavObjectCollection1 *navobj) {
  if (!pTentRoute) return false;
 
  bool bAddroute = true;
  //    If the route has only 1 point, don't load it.
  if (pTentRoute->GetnPoints() < 2) bAddroute = false;
 
  //    TODO  All this trouble for a tentative route.......Should make some
  //    Route methods????
  if (bAddroute) {
    pRouteList->push_back(pTentRoute);
 
    //    Do the (deferred) calculation of BBox
    pTentRoute->FinalizeForRendering();
 
    //    Add the selectable points and segments
 
    int ip = 0;
    float prev_rlat = 0., prev_rlon = 0.;
    RoutePoint *prev_pConfPoint = NULL;
 
    for (RoutePoint *prp : *pTentRoute->pRoutePointList) {
      if (ip)
        pSelect->AddSelectableRouteSegment(prev_rlat, prev_rlon, prp->m_lat,
                                           prp->m_lon, prev_pConfPoint, prp,
                                           pTentRoute);
      pSelect->AddSelectableRoutePoint(prp->m_lat, prp->m_lon, prp);
      prev_rlat = prp->m_lat;
      prev_rlon = prp->m_lon;
      prev_pConfPoint = prp;
 
      ip++;
    }
  } else {
    // walk the route, deleting points used only by this route
    for (RoutePoint *prp : *pTentRoute->pRoutePointList) {
      // check all other routes to see if this point appears in any other route
      Route *pcontainer_route = g_pRouteMan->FindRouteContainingWaypoint(prp);
      if (pcontainer_route == NULL) {
        // Take this point out of this (and only) track/route
        prp->m_bIsInRoute = false;
        if (!prp->IsShared()) {
          if (navobj) {
            delete prp;
          }
        }
      }
    }
 
    delete pTentRoute;
  }
  return bAddroute;
}
 
bool InsertTrack(Track *pTentTrack, bool bApplyChanges) {
  if (!pTentTrack) return false;
 
  bool bAddtrack = true;
  //    If the track has only 1 point, don't load it.
  //    This usually occurs if some points were discarded as being co-incident.
  if (!bApplyChanges && pTentTrack->GetnPoints() < 2) bAddtrack = false;
 
  //    TODO  All this trouble for a tentative track.......Should make some
  //    Track methods????
  if (bAddtrack) {
    g_TrackList.push_back(pTentTrack);
 
    //    Do the (deferred) calculation of Track BBox
    //        pTentTrack->FinalizeForRendering();
 
    //    Add the selectable points and segments
 
    float prev_rlat = 0., prev_rlon = 0.;
    TrackPoint *prev_pConfPoint = NULL;
 
    for (int i = 0; i < pTentTrack->GetnPoints(); i++) {
      TrackPoint *prp = pTentTrack->GetPoint(i);
 
      if (i)
        pSelect->AddSelectableTrackSegment(prev_rlat, prev_rlon, prp->m_lat,
                                           prp->m_lon, prev_pConfPoint, prp,
                                           pTentTrack);
 
      prev_rlat = prp->m_lat;
      prev_rlon = prp->m_lon;
      prev_pConfPoint = prp;
    }
  } else
    delete pTentTrack;
 
  return bAddtrack;
}
 
bool InsertWpt(RoutePoint *pWp, bool overwrite) {
  bool res = false;
  RoutePoint *pExisting =
      WaypointExists(pWp->GetName(), pWp->m_lat, pWp->m_lon);
  if (!pExisting || overwrite) {
    if (NULL != pWayPointMan) {
      if (pExisting) {
        pWayPointMan->DestroyWaypoint(pExisting);
      }
      pWayPointMan->AddRoutePoint(pWp);
      res = true;
    }
    pSelect->AddSelectableRoutePoint(pWp->m_lat, pWp->m_lon, pWp);
  }
  return res;
}
 
static void UpdateRouteA(Route *pTentRoute, NavObjectCollection1 *navobj) {
  if (!pTentRoute) return;
  if (pTentRoute->GetnPoints() < 2) return;
 
  // first delete the route to be modified if exists
  Route *pExisting = ::RouteExists(pTentRoute->m_GUID);
  if (pExisting) {
    g_pRouteMan->DeleteRoute(pExisting);
  }
 
  // create a new route
  Route *pChangeRoute = new Route();
  pRouteList->push_back(pChangeRoute);
 
  // update new route keeping the same gui
  pChangeRoute->m_GUID = pTentRoute->m_GUID;
  pChangeRoute->m_RouteNameString = pTentRoute->m_RouteNameString;
  pChangeRoute->m_RouteStartString = pTentRoute->m_RouteStartString;
  pChangeRoute->m_RouteEndString = pTentRoute->m_RouteEndString;
  pChangeRoute->SetVisible(pTentRoute->IsVisible());
 
  // Add points and segments to new route
  int ip = 0;
  float prev_rlat = 0., prev_rlon = 0.;
  RoutePoint *prev_pConfPoint = NULL;
 
  for (RoutePoint *prp : *pTentRoute->pRoutePointList) {
    // if some wpts have been not deleted, that means they should be used in
    // other routes or are isolated way points so need to be updated
    RoutePoint *ex_rp = ::WaypointExists(prp->m_GUID);
    if (ex_rp) {
      pSelect->DeleteSelectableRoutePoint(ex_rp);
      ex_rp->m_lat = prp->m_lat;
      ex_rp->m_lon = prp->m_lon;
      ex_rp->SetIconName(prp->GetIconName());
      ex_rp->m_MarkDescription = prp->m_MarkDescription;
      ex_rp->SetName(prp->GetName());
      ex_rp->m_TideStation = prp->m_TideStation;
      ex_rp->SetPlannedSpeed(prp->GetPlannedSpeed());
      pChangeRoute->AddPoint(ex_rp);
      pSelect->AddSelectableRoutePoint(prp->m_lat, prp->m_lon, ex_rp);
 
    } else {
      pChangeRoute->AddPoint(prp);
      pSelect->AddSelectableRoutePoint(prp->m_lat, prp->m_lon, prp);
      pWayPointMan->AddRoutePoint(prp);
    }
 
    if (ip)
      pSelect->AddSelectableRouteSegment(prev_rlat, prev_rlon, prp->m_lat,
                                         prp->m_lon, prev_pConfPoint, prp,
                                         pChangeRoute);
    prev_rlat = prp->m_lat;
    prev_rlon = prp->m_lon;
    prev_pConfPoint = prp;
 
    ip++;
  }
  //    Do the (deferred) calculation of BBox
  pChangeRoute->FinalizeForRendering();
}
 
Route *FindRouteContainingWaypoint(RoutePoint *pWP) {
  for (Route *proute : *pRouteList) {
    for (RoutePoint *prp : *proute->pRoutePointList) {
      if (prp == pWP) return proute;
    }
  }
 
  return NULL;  // not found
}
 
bool NavObjectCollection1::CreateNavObjGPXPoints() {
  //    Iterate over the Routepoint list, creating Nodes for
  //    Routepoints that are not in any Route
  //    as indicated by m_bIsolatedMark == false
 
  if (!pWayPointMan) return false;
 
  for (RoutePoint *pr : *pWayPointMan->GetWaypointList()) {
    if ((pr->m_bIsolatedMark) && !(pr->m_bIsInLayer) && !(pr->m_btemp)) {
      pugi::xml_node doc = root();
      pugi::xml_node gpx = doc.first_child();
      pugi::xml_node new_node = gpx.append_child("wpt");
 
      GPXCreateWpt(new_node, pr, OPT_WPT);
    }
  }
 
  return true;
}
 
bool NavObjectCollection1::CreateNavObjGPXRoutes() {
  // Routes
  if (!pRouteList) return false;
  for (Route *pRoute : *pRouteList) {
    if (!pRoute->m_bIsInLayer && !pRoute->m_btemp) {
      pugi::xml_node doc = root();
      pugi::xml_node gpx = doc.first_child();
      pugi::xml_node new_node = gpx.append_child("rte");
 
      GPXCreateRoute(new_node, pRoute);
    }
  }
 
  return true;
}
 
bool NavObjectCollection1::CreateNavObjGPXTracks() {
  // Tracks
  for (Track *pTrack : g_TrackList) {
    if (pTrack->GetnPoints()) {
      if (!pTrack->m_bIsInLayer && !pTrack->m_btemp) {
        pugi::xml_node doc = root();
        pugi::xml_node gpx = doc.first_child();
        pugi::xml_node new_node = gpx.append_child("trk");
 
        GPXCreateTrk(new_node, pTrack, 0);
      }
    }
  }
 
  return true;
}
 
bool NavObjectCollection1::CreateAllGPXObjects() {
  SetRootGPXNode();
 
  // CreateNavObjGPXPoints();
  // CreateNavObjGPXRoutes();
  //  CreateNavObjGPXTracks();
 
  return true;
}
 
bool NavObjectCollection1::AddGPXRoute(Route *pRoute) {
  SetRootGPXNode();
  pugi::xml_node doc = root();
  pugi::xml_node gpx = doc.first_child();
  pugi::xml_node new_node = gpx.append_child("rte");
 
  GPXCreateRoute(new_node, pRoute);
  return true;
}
 
bool NavObjectCollection1::AddGPXTrack(Track *pTrk) {
  SetRootGPXNode();
  pugi::xml_node doc = root();
  pugi::xml_node gpx = doc.first_child();
  pugi::xml_node new_node = gpx.append_child("trk");
 
  GPXCreateTrk(new_node, pTrk, 0);
  return true;
}
 
bool NavObjectCollection1::AddGPXWaypoint(RoutePoint *pWP) {
  SetRootGPXNode();
  pugi::xml_node doc = root();
  pugi::xml_node gpx = doc.first_child();
  pugi::xml_node new_node = gpx.append_child("wpt");
 
  GPXCreateWpt(new_node, pWP, OPT_WPT);
  return true;
}
 
void NavObjectCollection1::AddGPXRoutesList(RouteList *pRoutes) {
  SetRootGPXNode();
 
  for (Route *pRData : *pRoutes) {
    AddGPXRoute(pRData);
  }
}
 
void NavObjectCollection1::AddGPXTracksList(std::vector<Track *> *pTracks) {
  SetRootGPXNode();
 
  for (Track *pRData : *pTracks) {
    AddGPXTrack(pRData);
  }
}
 
bool NavObjectCollection1::AddGPXPointsList(RoutePointList *pRoutePoints) {
  SetRootGPXNode();
 
  for (RoutePoint *pRP : *pRoutePoints) {
    AddGPXWaypoint(pRP);
  }
 
  return true;
}
 
void NavObjectCollection1::SetRootGPXNode() {
  if (!strlen(first_child().name())) {
    pugi::xml_node gpx_root = append_child("gpx");
    gpx_root.append_attribute("version") = "1.1";
    gpx_root.append_attribute("creator") = "OpenCPN";
    gpx_root.append_attribute("xmlns:xsi") =
        "http://www.w3.org/2001/XMLSchema-instance";
    gpx_root.append_attribute("xmlns") = "http://www.topografix.com/GPX/1/1";
    gpx_root.append_attribute("xmlns:gpxx") =
        "http://www.garmin.com/xmlschemas/GpxExtensions/v3";
    gpx_root.append_attribute("xsi:schemaLocation") =
        "http://www.topografix.com/GPX/1/1 "
        "http://www.topografix.com/GPX/1/1/gpx.xsd "
        "http://www.garmin.com/xmlschemas/GpxExtensions/v3 "
        "http://www8.garmin.com/xmlschemas/GpxExtensionsv3.xsd";
    gpx_root.append_attribute("xmlns:opencpn") = "http://www.opencpn.org";
  }
}
 
bool NavObjectCollection1::IsOpenCPN() {
  for (pugi::xml_attribute attr = root().first_child().first_attribute(); attr;
       attr = attr.next_attribute())
    if (!strcmp(attr.name(), "creator") && !strcmp(attr.value(), "OpenCPN"))
      return true;
  return false;
}
 
bool NavObjectCollection1::SaveFile(const wxString filename) {
  wxString tmp_filename = filename + ".tmp";
  if (wxFileExists(tmp_filename)) {
    wxRemoveFile(tmp_filename);
  }
  save_file(tmp_filename.fn_str(), "  ");
  wxRenameFile(tmp_filename.fn_str(), filename.fn_str(), true);
  return true;
}
 
bool NavObjectCollection1::LoadAllGPXObjects(bool b_full_viz,
                                             int &wpt_duplicates,
                                             bool b_compute_bbox) {
  wpt_duplicates = 0;
  pugi::xml_node objects = this->child("gpx");
 
  for (pugi::xml_node object = objects.first_child(); object;
       object = object.next_sibling()) {
    if (!strcmp(object.name(), "wpt")) {
      RoutePoint *pWp =
          ::GPXLoadWaypoint1(object, "circle", "", b_full_viz, false, false, 0);
 
      pWp->m_bIsolatedMark = true;  // This is an isolated mark
      RoutePoint *pExisting =
          WaypointExists(pWp->GetName(), pWp->m_lat, pWp->m_lon);
      if (!pExisting) {
        if (NULL != pWayPointMan) pWayPointMan->AddRoutePoint(pWp);
        NavObj_dB::GetInstance().InsertRoutePoint(pWp);
        pSelect->AddSelectableRoutePoint(pWp->m_lat, pWp->m_lon, pWp);
        LLBBox wptbox;
        wptbox.Set(pWp->m_lat, pWp->m_lon, pWp->m_lat, pWp->m_lon);
        BBox.Expand(wptbox);
      } else {
        delete pWp;
        wpt_duplicates++;
      }
    } else if (!strcmp(object.name(), "trk")) {
      Track *pTrack = GPXLoadTrack1(object, b_full_viz, false, false, 0);
      if (InsertTrack(pTrack)) {
        NavObj_dB::GetInstance().InsertTrack(pTrack);
      }
    } else if (!strcmp(object.name(), "rte")) {
      Route *pRoute = GPXLoadRoute1(object, b_full_viz, false, false, 0, false);
      if (InsertRouteA(pRoute, this)) {
        NavObj_dB::GetInstance().InsertRoute(pRoute);
        if (b_compute_bbox && pRoute->IsVisible())
          BBox.Expand(pRoute->GetBBox());
      }
    }
  }
 
  return true;
}
 
int NavObjectCollection1::LoadAllGPXObjectsAsLayer(int layer_id,
                                                   bool b_layerviz,
                                                   wxCheckBoxState b_namesviz) {
  if (!pWayPointMan) return 0;
 
  int n_obj = 0;
  pugi::xml_node objects = this->child("gpx");
 
  for (pugi::xml_node object = objects.first_child(); object;
       object = object.next_sibling()) {
    if (!strcmp(object.name(), "wpt")) {
      RoutePoint *pWp = ::GPXLoadWaypoint1(object, "circle", "",
                                           b_namesviz != wxCHK_UNDETERMINED,
                                           true, b_layerviz, layer_id);
      if (b_namesviz != wxCHK_UNDETERMINED) {
        pWp->SetNameShown(b_namesviz == wxCHK_CHECKED);
      }
      pWp->m_bIsolatedMark = true;  // This is an isolated mark
      pWayPointMan->AddRoutePoint(pWp);
      pSelect->AddSelectableRoutePoint(pWp->m_lat, pWp->m_lon, pWp);
      n_obj++;
    } else {
      if (!strcmp(object.name(), "trk")) {
        Track *pTrack =
            GPXLoadTrack1(object, false, true, b_layerviz, layer_id);
        n_obj++;
        InsertTrack(pTrack);
      } else if (!strcmp(object.name(), "rte")) {
        Route *pRoute =
            GPXLoadRoute1(object, true, true, b_layerviz, layer_id, false);
        n_obj++;
        InsertRouteA(pRoute, this);
      }
    }
  }
 
  return n_obj;
}
 
bool NavObjectCollection1::LoadAllGPXTrackObjects() {
  pugi::xml_node objects = this->child("gpx");
 
  for (pugi::xml_node object = objects.first_child(); object;
       object = object.next_sibling()) {
    if (!strcmp(object.name(), "trk")) {
      Track *pTrack = GPXLoadTrack1(object, true, false, false, 0);
      InsertTrack(pTrack);
    }
  }
 
  return true;
}
 
bool NavObjectCollection1::LoadAllGPXRouteObjects() {
  pugi::xml_node objects = this->child("gpx");
 
  for (pugi::xml_node object = objects.first_child(); object;
       object = object.next_sibling()) {
    if (!strcmp(object.name(), "rte")) {
      Route *route = GPXLoadRoute1(object, true, false, false, 0, false, true);
      InsertRouteA(route, nullptr);
    }
  }
 
  return true;
}
 
bool NavObjectCollection1::LoadAllGPXPointObjects() {
  pugi::xml_node objects = this->child("gpx");
 
  for (pugi::xml_node object = objects.first_child(); object;
       object = object.next_sibling()) {
    if (!strcmp(object.name(), "wpt")) {
      RoutePoint *rp =
          GPXLoadWaypoint1(object, "circle", "", false, false, false, 0);
      rp->m_bIsolatedMark = true;
      pWayPointMan->AddRoutePoint(rp);
    }
  }
  return true;
}
 
RoutePoint *WaypointExists(const wxString &name, double lat, double lon) {
  RoutePoint *pret = NULL;
  //    if( g_bIsNewLayer ) return NULL;
  for (RoutePoint *pr : *pWayPointMan->GetWaypointList()) {
    if (name == pr->GetName()) {
      if (fabs(lat - pr->m_lat) < 1.e-6 && fabs(lon - pr->m_lon) < 1.e-6) {
        pret = pr;
        break;
      }
    }
  }
 
  return pret;
}
 
RoutePoint *WaypointExists(const wxString &guid) {
  for (RoutePoint *pr : *pWayPointMan->GetWaypointList()) {
    if (guid == pr->m_GUID) {
      return pr;
    }
  }
  return NULL;
}
 
bool WptIsInRouteList(RoutePoint *pr) {
  bool IsInList = false;
 
  for (Route *pRoute : *pRouteList) {
    RoutePointList *pRoutePointList = pRoute->pRoutePointList;
    for (RoutePoint *prp : *pRoutePointList) {
      if (pr->IsSame(prp)) {
        IsInList = true;
        break;
      }
    }
  }
  return IsInList;
}
 
Route *RouteExists(const wxString &guid) {
  for (Route *proute : *pRouteList) {
    if (guid == proute->m_GUID) return proute;
  }
  return NULL;
}
 
Route *RouteExists(Route *pTentRoute) {
  for (Route *proute : *pRouteList) {
    if (proute->IsEqualTo(pTentRoute)) return proute;
  }
  return NULL;
}
 
Track *TrackExists(const wxString &guid) {
  for (Track *ptrack : g_TrackList) {
    if (guid == ptrack->m_GUID) return ptrack;
  }
  return NULL;
}