Show popup

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// [WriteFile Name=ShowPopup, Category=DisplayInformation]
// [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

#include "ShowPopup.h"

#include "FeatureLayer.h"
#include "Map.h"
#include "MapQuickView.h"
#include "PopupManager.h"

using namespace Esri::ArcGISRuntime;

ShowPopup::ShowPopup(QObject* parent /* = nullptr */):
  QObject(parent),
  m_map(new Map(QUrl("https://runtime.maps.arcgis.com/home/webmap/viewer.html?webmap=e4c6eb667e6c43b896691f10cc2f1580"), this))
{
}

ShowPopup::~ShowPopup() = default;

void ShowPopup::init()
{
  // Register the map view for QML
  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
  qmlRegisterType<ShowPopup>("Esri.Samples", 1, 0, "ShowPopupSample");

  // Required to use the PopupManager with a QML UI.
  qmlRegisterUncreatableType<PopupManager>("Esri.Samples", 1, 0, "PopupManager", "PopupManager is uncreateable");
  qmlRegisterUncreatableType<PopupAttachmentManager>("Esri.Samples", 1, 0, "PopupAttachmentManager", "PopupAttachmentManager is uncreateable");
  qmlRegisterUncreatableType<PopupAttributeListModel>("Esri.Samples", 1, 0, "PopupAttributeListModel", "PopupAttributeListModel is uncreateable");
  qmlRegisterUncreatableType<PopupAttachmentListModel>("Esri.Samples", 1, 0, "PopupAttachmentListModel", "PopupAttachmentListModel is uncreateable");
}

MapQuickView* ShowPopup::mapView() const
{
  return m_mapView;
}

// Set the view (created in QML)
void ShowPopup::setMapView(MapQuickView* mapView)
{
  if (!mapView || mapView == m_mapView)
    return;

  m_mapView = mapView;
  m_mapView->setMap(m_map);

  // once map is set, connect to MapQuickView mouse clicked signal
  connect(m_mapView, &MapQuickView::mouseClicked, this, &ShowPopup::onMouseClicked);

  // connect to MapQuickView::identifyLayerCompleted signal
  connect(m_mapView, &MapQuickView::identifyLayerCompleted, this, &ShowPopup::onIdentifyLayerCompleted);
  emit mapViewChanged();
}

void ShowPopup::onIdentifyLayerCompleted(QUuid, IdentifyLayerResult* rawIdentifyResult)
{
  emit taskRunningChanged();
  auto identifyResult = std::unique_ptr<IdentifyLayerResult>(rawIdentifyResult);

  // Invalid identify result
  if (!identifyResult)
    return;

  if (!identifyResult->error().isEmpty())
  {
    qDebug() << "Identify error occurred: " << identifyResult->error().message();
    return;
  }

  m_featureLayer->clearSelection();
  const auto elements = identifyResult->geoElements();
  for (GeoElement* geoElement : elements)
  {
    Feature* feature = static_cast<Feature*>(geoElement);
    m_featureLayer->selectFeature(feature);
  }

  if (!identifyResult->popups().isEmpty())
  {
    // clear the list of PopupManagers
    m_popupManagers.clear();
    const auto popups = identifyResult->popups();
    for (Popup* popup : popups)
    {
      // create a popup manager
      PopupManager* popupManager = new PopupManager{popup, this};
      // append popup manager to list
      m_popupManagers.append(popupManager);
      // notify QML that m_popupManagers has changed and to display the popup(s).
      emit popupManagersChanged();
    }
  }
}

void ShowPopup::onMouseClicked(QMouseEvent& mouseEvent)
{
  if (m_map->loadStatus() != LoadStatus::Loaded)
    return;

  Layer* layer = m_map->operationalLayers()->at(0);
  if (layer->layerType() == LayerType::FeatureLayer)
  {
    m_featureLayer = static_cast<FeatureLayer*>(layer);
  }

  constexpr double tolerance = 12;
  constexpr bool returnPopupsOnly = false;
  constexpr int maximumResults = 10;

  m_taskWatcher = m_mapView->identifyLayer(m_featureLayer, mouseEvent.x(), mouseEvent.y(), tolerance, returnPopupsOnly, maximumResults);

  if (!m_taskWatcher.isValid())
    qWarning() << "Task not valid.";

  emit taskRunningChanged();
}

bool ShowPopup::taskRunning() const
{
  return !m_taskWatcher.isDone();
}

QQmlListProperty<PopupManager> ShowPopup::popupManagers()
{
  return QQmlListProperty<PopupManager>(this, &m_popupManagers);
}

void ShowPopup::clearSelection() const
{
  m_featureLayer->clearSelection();
}