List KML contents

// [WriteFile Name=ListKmlContents, Category=Layers]
// [Legal]
// Copyright 2020 Esri.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]

#ifdef PCH_BUILD
#include "pch.hpp"
#endif // PCH_BUILD

// sample headers
#include "ListKmlContents.h"

// ArcGIS Maps SDK headers
#include "ArcGISTiledElevationSource.h"
#include "Camera.h"
#include "ElevationSourceListModel.h"
#include "Envelope.h"
#include "Error.h"
#include "KmlContainer.h"
#include "KmlDataset.h"
#include "KmlLayer.h"
#include "KmlNetworkLink.h"
#include "KmlNode.h"
#include "KmlNodeListModel.h"
#include "KmlViewpoint.h"
#include "LayerListModel.h"
#include "MapTypes.h"
#include "Point.h"
#include "Scene.h"
#include "SceneQuickView.h"
#include "SpatialReference.h"
#include "Surface.h"

// Qt headers
#include <QFuture>
#include <QStandardPaths>
#include <QUuid>

// STL headers
#include <algorithm>

using namespace Esri::ArcGISRuntime;

// helper method to get cross platform data path
namespace
{
QString defaultDataPath()
{
  QString dataPath;

#ifdef Q_OS_IOS
  dataPath = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
#else
  dataPath = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
#endif

  return dataPath;
}
} // namespace

ListKmlContents::ListKmlContents(QObject* parent /* = nullptr */):
  QObject(parent),
  m_scene(new Scene(BasemapStyle::ArcGISImagery, this))
{
  // create a new elevation source from Terrain3D REST service
  ArcGISTiledElevationSource* elevationSource = new ArcGISTiledElevationSource(
        QUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"), this);

  // add the elevation source to the scene to display elevation
  m_scene->baseSurface()->elevationSources()->append(elevationSource);

  const QString filepath = defaultDataPath() + "/ArcGIS/Runtime/Data/kml/esri_test_data.kmz";

  // create new KML layer
  m_kmlDataset = new KmlDataset(filepath, this);
  KmlLayer* kmlLayer = new KmlLayer(m_kmlDataset, this);
  m_scene->operationalLayers()->append(kmlLayer);

  connect(m_kmlDataset, &KmlDataset::doneLoading, this, [this](const Error& loadError)
  {
    if (!loadError.isEmpty())
    {
      qDebug() << loadError.message() << loadError.additionalMessage();
      return;
    }

    // recursively build tree to display KML contents
    const auto nodes = m_kmlDataset->rootNodes();
    for (KmlNode* node : nodes)
    {
      m_kmlNodesList << node;
      buildTree(node);
    }

    // if at top node, then display children
    if (!m_kmlNodesList.isEmpty() && m_kmlNodesList[0]->parentNode() == nullptr)
    {
      m_currentNode = m_kmlNodesList[0];
      emit currentNodeChanged();
      emit levelNodeNamesChanged();
    }
  });
}

QString ListKmlContents::getKmlNodeType(KmlNode *node)
{
  if (node == nullptr)
    return "";

  QString type = "";
  switch (node->kmlNodeType()) {
  case KmlNodeType::KmlDocument:
    type = "KmlDocument";
    break;
  case KmlNodeType::KmlFolder:
    type = "KmlFolder";
    break;
  case KmlNodeType::KmlNetworkLink:
    type = "KmlNetworkLink";
    break;
  case KmlNodeType::KmlPlacemark:
    type = "KmlPlacemark";
    break;
  case KmlNodeType::KmlPhotoOverlay:
    type = "KmlPhotoOverlay";
    break;
  case KmlNodeType::KmlGroundOverlay:
    type = "KmlGroundOverlay";
    break;
  case KmlNodeType::KmlScreenOverlay:
    type = "KmlScreenOverlay";
    break;
  case KmlNodeType::KmlTour:
    type = "KmlTour";
    break;
  default:
    return "";
  }
  return type;
}

// recursively build string to indicate node's ancestors
QStringList ListKmlContents::buildPathLabel(KmlNode* node) const
{
  if (node != nullptr)
    return buildPathLabel(node->parentNode()) << node->name();
  else
    return QStringList {};
}

void ListKmlContents::displayPreviousLevel()
{
  KmlNode* parentNode = m_currentNode->parentNode();
  if (parentNode == nullptr)
    return;

  KmlNode* grandparentNode = parentNode->parentNode();

  if (grandparentNode != nullptr)
  {
    m_currentNode = grandparentNode;
    emit currentNodeChanged();
    emit labelTextChanged();
    emit levelNodeNamesChanged();
  }
  // if grandparent node is nullptr, then at top of tree
  else
  {
    m_currentNode = parentNode;
    emit currentNodeChanged();
    emit labelTextChanged();
    emit levelNodeNamesChanged();
  }
}

// display selected node on sceneview and show its children
void ListKmlContents::processSelectedNode(const QString& nodeName)
{
  // extract the node's name from the string, formatted "name - nodeType"
  QString extractedNodeName = nodeName;
  if (nodeName.contains(" - "))
  {
    int ind = nodeName.lastIndexOf(" - ");
    extractedNodeName = nodeName.left(ind);
  }

  // find node in the list
  for (KmlNode* node : std::as_const(m_kmlNodesList))
  {
    if (extractedNodeName == node->name())
    {
      // update current node
      m_currentNode = node;
      emit currentNodeChanged();
      emit labelTextChanged();

      m_viewpoint = Viewpoint();
      getViewpointFromKmlViewpoint(node);
      if (m_needsAltitudeFixed)
      {
        getAltitudeAdjustedViewpoint(node);
      }
      else
      {
        if (!m_viewpoint.isEmpty() && !m_viewpoint.targetGeometry().isEmpty())
          m_sceneView->setViewpointAsync(m_viewpoint);
      }

      // reset m_lastLevel before levelNodeNames() is called
      emit levelNodeNamesChanged();

      // if displaying end-nodes, change m_currentNode to first end-node for correct behavior of back button
      if (noGrandchildren(m_currentNode))
      {
        m_currentNode = static_cast<KmlContainer*>(m_currentNode)->childNodesListModel()->at(0);
        emit currentNodeChanged();
      }
      break;
    }
  }
}

void ListKmlContents::getViewpointFromKmlViewpoint(KmlNode* node)
{
  const KmlViewpoint kmlViewpoint = node->viewpoint();

  if (!kmlViewpoint.isEmpty())
  {
    // altitude adjustment is needed for all but Absolute altitude mode
    m_needsAltitudeFixed = (kmlViewpoint.altitudeMode() != KmlAltitudeMode::Absolute);

    switch (kmlViewpoint.type())
    {
    case KmlViewpointType::LookAt:
      m_viewpoint = Viewpoint(kmlViewpoint.location(), Camera(kmlViewpoint.location(), kmlViewpoint.range(),
                                                              kmlViewpoint.heading(), kmlViewpoint.pitch(), kmlViewpoint.roll()));
      return;
    case KmlViewpointType::Camera:
      m_viewpoint = Viewpoint(kmlViewpoint.location(), Camera(kmlViewpoint.location(),
                                                              kmlViewpoint.heading(), kmlViewpoint.pitch(), kmlViewpoint.roll()));
      return;
    default:
      qWarning("Unexpected KmlViewpointType");
      return;
    }
  }

  // if viewpoint was empty, then use node's extent
  const Envelope nodeExtent = node->extent();
  if (nodeExtent.isValid() && !nodeExtent.isEmpty())
  {
    // when no altitude is specified, assume elevation needs to be adjusted
    m_needsAltitudeFixed = true;

    if (nodeExtent.width() == 0 && nodeExtent.height() == 0)
    {
      // default values: distance = 1000m, pitch = 45 degrees
      m_viewpoint = Viewpoint(nodeExtent);
      m_sceneView->setViewpointCameraAndWait(Camera(nodeExtent.center(), 1000, 0, 45, 0));
      return;
    }
    else
    {
      // add padding to extent
      double bufferDistance = qMax(nodeExtent.width(), nodeExtent.height()) / 20;
      Envelope bufferedExtent = Envelope(nodeExtent.xMin() - bufferDistance, nodeExtent.yMin() - bufferDistance,
                                         nodeExtent.xMax() + bufferDistance, nodeExtent.yMax() + bufferDistance,
                                         nodeExtent.zMin() - bufferDistance, nodeExtent.zMax() + bufferDistance,
                                         SpatialReference::wgs84());
      m_viewpoint = Viewpoint(bufferedExtent);
    }
  }
  else
  {
    // can't show viewpoint
    m_needsAltitudeFixed = false;
    m_viewpoint = Viewpoint();
  }
}

void ListKmlContents::getAltitudeAdjustedViewpoint(KmlNode* node)
{
  // assume altitude mode is clamp-to-ground if not specified
  KmlAltitudeMode altMode = KmlAltitudeMode::ClampToGround;
  KmlViewpoint kmlViewpoint = node->viewpoint();

  if (!kmlViewpoint.isEmpty())
  {
    altMode = kmlViewpoint.altitudeMode();
  }

  // if altitude mode is Absolute, viewpoint doesn't need adjustment
  if (altMode == KmlAltitudeMode::Absolute)
  {
    m_sceneView->setViewpointAsync(m_viewpoint);
    return;
  }

  const Envelope lookAtExtent = geometry_cast<Envelope>(m_viewpoint.targetGeometry());
  const Point lookAtPoint = geometry_cast<Point>(m_viewpoint.targetGeometry());

  if (lookAtExtent.isValid())
  {
    m_scene->baseSurface()->elevationAsync(lookAtExtent.center()).then(this, [this](double elevation)
    {
      onLocationToElevationCompleted_(elevation);
    });
  }
  else if (lookAtPoint.isValid())
  {
    m_scene->baseSurface()->elevationAsync(lookAtPoint).then(this, [this](double elevation)
    {
      onLocationToElevationCompleted_(elevation);
    });
  }
}

// recursively build list of all KML nodes
void ListKmlContents::buildTree(KmlNode* parentNode)
{
  auto addNode = [this](KmlNode* node)
  {
    // some nodes have default visibility set to false
    node->setVisible(true);

    m_kmlNodesList << node;
    buildTree(node);
  };

  if (KmlContainer* container = dynamic_cast<KmlContainer*>(parentNode))
  {
    const KmlNodeListModel& childNodes = *container->childNodesListModel();
    std::for_each(std::begin(childNodes), std::end(childNodes), addNode);
  }
  else if (KmlNetworkLink* networkLink = dynamic_cast<KmlNetworkLink*>(parentNode))
  {
    const QList<KmlNode*> childNodes = networkLink->childNodes();
    std::for_each(std::begin(childNodes), std::end(childNodes), addNode);
  }
}

ListKmlContents::~ListKmlContents() = default;

void ListKmlContents::init()
{
  // Register classes for QML
  qmlRegisterType<SceneQuickView>("Esri.Samples", 1, 0, "SceneView");
  qmlRegisterType<ListKmlContents>("Esri.Samples", 1, 0, "ListKmlContentsSample");
}

SceneQuickView* ListKmlContents::sceneView() const
{
  return m_sceneView;
}

// Set the view (created in QML)
void ListKmlContents::setSceneView(SceneQuickView* sceneView)
{
  if (!sceneView || sceneView == m_sceneView)
    return;

  m_sceneView = sceneView;
  m_sceneView->setArcGISScene(m_scene);

  emit sceneViewChanged();
}

void ListKmlContents::onLocationToElevationCompleted_(double elevation)
{
  // assume altitude mode is clamp-to-ground if not specified
  KmlAltitudeMode altMode = KmlAltitudeMode::ClampToGround;
  KmlViewpoint kmlViewpoint = m_currentNode->viewpoint();

  if (!kmlViewpoint.isEmpty())
  {
    altMode = kmlViewpoint.altitudeMode();
  }
  // if altitude mode is Absolute, viewpoint doesn't need adjustment
  if (altMode == KmlAltitudeMode::Absolute)
    return;

  const Envelope lookAtExtent = geometry_cast<Envelope>(m_viewpoint.targetGeometry());
  const Point lookAtPoint = geometry_cast<Point>(m_viewpoint.targetGeometry());

  if (lookAtExtent.isValid())
  {
    Envelope  target;
    if (altMode == KmlAltitudeMode::ClampToGround)
    {
      // if depth of extent is 0, add 100m to the elevation to get zMax
      if (lookAtExtent.depth() == 0)
      {
        target = Envelope(lookAtExtent.xMin(), lookAtExtent.yMin(),
                          lookAtExtent.xMax(), lookAtExtent.yMax(),
                          elevation, elevation + 100,
                          lookAtExtent.spatialReference());
      }
      else
      {
        target = Envelope(lookAtExtent.xMin(), lookAtExtent.yMin(),
                          lookAtExtent.xMax(), lookAtExtent.yMax(),
                          // set the camera slightly above the placemark by adding one meter
                          elevation, lookAtExtent.depth() + elevation + 1,
                          lookAtExtent.spatialReference());
      }
    }
    else
    {
      target = Envelope(lookAtExtent.xMin(), lookAtExtent.yMin(),
                        lookAtExtent.xMax(), lookAtExtent.yMax(),
                        lookAtExtent.zMin() + elevation, lookAtExtent.zMax() + elevation,
                        lookAtExtent.spatialReference());
    }

    // if node has viewpoint specified, return adjusted geometry with adjusted camera
    if (!kmlViewpoint.isEmpty())
    {
      m_sceneView->setViewpointCameraAndWait(m_viewpoint.camera().elevate(elevation));
      m_viewpoint = Viewpoint(target);
      m_sceneView->setViewpointAsync(m_viewpoint);
      return;
    }
    else
    {
      m_viewpoint = Viewpoint(target);
      m_sceneView->setViewpointAsync(m_viewpoint);
      return;
    }
  }
  else if (lookAtPoint.isValid())
  {
    Point target;
    if (altMode == KmlAltitudeMode::ClampToGround)
    {
      target = Point(lookAtPoint.x(), lookAtPoint.y(), elevation, lookAtPoint.spatialReference());
    }
    else
    {
      target = Point(lookAtPoint.x(), lookAtPoint.y(), lookAtPoint.z() + elevation, lookAtPoint.spatialReference());
    }

    // set the viewpoint using the adjusted target
    if (!kmlViewpoint.isEmpty())
    {
      m_sceneView->setViewpointCameraAndWait(m_viewpoint.camera().elevate(elevation));
      m_viewpoint = Viewpoint(target);
      m_sceneView->setViewpointAsync(m_viewpoint);
      return;
    }
    else
    {
      // use default values to set camera: distance = 1000m, pitch = 45 degrees
      m_viewpoint = Viewpoint(target);
      m_sceneView->setViewpointAsync(m_viewpoint);
      m_sceneView->setViewpointCameraAndWait(Camera(target, 1000, 0, 45, 0));
      return;
    }
  }
}

QStringList ListKmlContents::levelNodeNames()
{
  if (m_currentNode == nullptr)
    return {};

  QStringList nodeNames = {};

  // if node is not a container, m_levelNodeNames will be unchanged
  if (KmlContainer* container = dynamic_cast<KmlContainer*>(m_currentNode))
  {
    // for current level, get names of child nodes
    for (KmlNode* node: *(container->childNodesListModel()))
    {
      QString str = node->name() + " - " + getKmlNodeType(node);

      // if node has children, add ">" to indicate further levels
      if (!node->children().isEmpty())
      {
        str.append(" >");
      }
      nodeNames << str;
    }
    m_levelNodeNames = nodeNames;
  }
  return m_levelNodeNames;
}

bool ListKmlContents::noGrandchildren(KmlNode *currentNode) const
{
  bool hasNoGrandchildren = false;

  if (KmlContainer* container = dynamic_cast<KmlContainer*>(currentNode))
  {
    hasNoGrandchildren = true;

    // for current level, get names of child nodes
    for (KmlNode* node: *(container->childNodesListModel()))
    {
      // if node has children, add ">" to indicate further levels
      if (!node->children().isEmpty())
      {
        hasNoGrandchildren = false;
      }
    }
  }

  return hasNoGrandchildren;
}

QString ListKmlContents::labelText() const
{
  return buildPathLabel(m_currentNode).join(" > ");
}

bool ListKmlContents::isTopLevel() const
{
  if (m_currentNode == nullptr)
    return true;
  else if (m_currentNode->parentNode() == nullptr)
    return true;
  else if (m_currentNode->name() == "")
    return true;
  else
    return false;
}

// [WriteFile Name=ListKmlContents, Category=Layers]
// [Legal]
// Copyright 2020 Esri.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]

#ifndef LISTKMLCONTENTS_H
#define LISTKMLCONTENTS_H

// ArcGIS Maps SDK headers
#include "Viewpoint.h"

// Qt headers
#include <QList>
#include <QObject>
#include <QStringList>

namespace Esri::ArcGISRuntime
{
class KmlDataset;
class KmlNode;
class KmlNodeListModel;
class Scene;
class SceneQuickView;
}

Q_MOC_INCLUDE("SceneQuickView.h")

class ListKmlContents : public QObject
{
  Q_OBJECT

  Q_PROPERTY(Esri::ArcGISRuntime::SceneQuickView* sceneView READ sceneView WRITE setSceneView NOTIFY sceneViewChanged)
  Q_PROPERTY(QStringList levelNodeNames READ levelNodeNames NOTIFY levelNodeNamesChanged)
  Q_PROPERTY(bool isTopLevel READ isTopLevel NOTIFY currentNodeChanged)
  Q_PROPERTY(QString labelText READ labelText NOTIFY labelTextChanged)

public:
  explicit ListKmlContents(QObject* parent = nullptr);
  ~ListKmlContents();

  static void init();
  Q_INVOKABLE void processSelectedNode(const QString& nodeName);
  Q_INVOKABLE void displayPreviousLevel();

signals:
  void sceneViewChanged();
  void levelNodeNamesChanged();
  void labelTextChanged();
  void currentNodeChanged();

private:
  Esri::ArcGISRuntime::SceneQuickView* sceneView() const;
  void setSceneView(Esri::ArcGISRuntime::SceneQuickView* sceneView);
  QStringList levelNodeNames();
  QString labelText() const;
  bool isTopLevel() const;

  void buildTree(Esri::ArcGISRuntime::KmlNode* parentNode);
  QStringList buildPathLabel(Esri::ArcGISRuntime::KmlNode* node) const;
  QString getKmlNodeType(Esri::ArcGISRuntime::KmlNode* node);
  bool noGrandchildren(Esri::ArcGISRuntime::KmlNode* node) const;
  void getViewpointFromKmlViewpoint(Esri::ArcGISRuntime::KmlNode* node);
  void getAltitudeAdjustedViewpoint(Esri::ArcGISRuntime::KmlNode* node);
  void onLocationToElevationCompleted_(double elevation);

  Esri::ArcGISRuntime::Scene* m_scene = nullptr;
  Esri::ArcGISRuntime::SceneQuickView* m_sceneView = nullptr;
  Esri::ArcGISRuntime::KmlDataset* m_kmlDataset = nullptr;
  QStringList m_levelNodeNames = {};
  QList<Esri::ArcGISRuntime::KmlNode*> m_kmlNodesList = {};
  Esri::ArcGISRuntime::KmlNode* m_currentNode = nullptr;
  bool m_needsAltitudeFixed;
  Esri::ArcGISRuntime::Viewpoint m_viewpoint;
};

#endif // LISTKMLCONTENTS_H

// [WriteFile Name=ListKmlContents, Category=Layers]
// [Legal]
// Copyright 2020 Esri.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]

import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
import Esri.Samples

Item {

    SceneView {
        id: view
        anchors.fill: parent

        Component.onCompleted: {
            // Set the focus on SceneView to initially enable keyboard navigation
            forceActiveFocus();
        }

        // Create window for displaying the KML contents
        Control {
            width: 300
            background : Rectangle {
                color: "lightgrey"
            }
            contentItem: GridLayout {
                columns: 2
                Button {
                    id: backButton
                    Layout.margins: 3
                    text: "<"
                    enabled: !sampleModel.isTopLevel
                    flat: true
                    highlighted: pressed
                    onClicked: {
                        sampleModel.displayPreviousLevel();
                    }
                }
                Text {
                    Layout.fillWidth: true
                    id: textLabel
                    text: sampleModel.labelText
                    wrapMode: Text.Wrap
                }
                ListView {
                    id: myListView
                    Layout.columnSpan: 2
                    Layout.fillWidth: true
                    model: sampleModel.levelNodeNames
                    Layout.preferredHeight: contentHeight
                    delegate: Button {
                        text: modelData
                        anchors {
                            left: parent.left
                            right: parent.right
                        }
                        highlighted: pressed
                        onClicked: {
                            sampleModel.processSelectedNode(text);
                        }
                    }
                }
            }
        }
    }

    // Declare the C++ instance which creates the scene etc. and supply the view
    ListKmlContentsSample {
        id: sampleModel
        sceneView: view
    }
}

// [Legal]
// Copyright 2020 Esri.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]

// sample headers
#include "ListKmlContents.h"

// ArcGIS Maps SDK headers
#include "ArcGISRuntimeEnvironment.h"

// Qt headers
#include <QDir>
#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QSurfaceFormat>

// Platform specific headers
#ifdef Q_OS_WIN
#include <Windows.h>
#endif

int main(int argc, char *argv[])
{
  Esri::ArcGISRuntime::ArcGISRuntimeEnvironment::setUseLegacyAuthentication(false);
#if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID)
  // Linux requires 3.2 OpenGL Context
  // in order to instance 3D symbols
  QSurfaceFormat fmt = QSurfaceFormat::defaultFormat();
  fmt.setVersion(3, 2);
  QSurfaceFormat::setDefaultFormat(fmt);
#endif

  QGuiApplication app(argc, argv);
  app.setApplicationName(QString("ListKmlContents"));

  // Use of ArcGIS location services, such as basemap styles, geocoding, and routing services,
  // requires an access token. For more information see
  // https://links.esri.com/arcgis-runtime-security-auth.

  // The following methods grant an access token:

  // 1. User authentication: Grants a temporary access token associated with a user's ArcGIS account.
  // To generate a token, a user logs in to the app with an ArcGIS account that is part of an
  // organization in ArcGIS Online or ArcGIS Enterprise.

  // 2. API key authentication: Get a long-lived access token that gives your application access to
  // ArcGIS location services. Go to the tutorial at https://links.esri.com/create-an-api-key.
  // Copy the API Key access token.

  const QString accessToken = QString("");

  if (accessToken.isEmpty())
  {
      qWarning() << "Use of ArcGIS location services, such as the basemap styles service, requires" <<
                    "you to authenticate with an ArcGIS account or set the API Key property.";
  }
  else
  {
      Esri::ArcGISRuntime::ArcGISRuntimeEnvironment::setApiKey(accessToken);
  }

  // Initialize the sample
  ListKmlContents::init();

  // Initialize application view
  QQmlApplicationEngine engine;
  // Add the import Path
  engine.addImportPath(QDir(QCoreApplication::applicationDirPath()).filePath("qml"));

#ifdef ARCGIS_RUNTIME_IMPORT_PATH_2
  engine.addImportPath(ARCGIS_RUNTIME_IMPORT_PATH_2);
#endif

  // Set the source
  engine.load(QUrl("qrc:/Samples/Layers/ListKmlContents/main.qml"));

  return app.exec();
}

// Copyright 2020 Esri.

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import QtQuick.Controls
import Esri.Samples

ApplicationWindow {
    visible: true
    width: 800
    height: 600

    ListKmlContents {
        anchors.fill: parent
    }
}