ProGuide Custom Pop ups - Esri/arcgis-pro-sdk GitHub Wiki

public CustomPopupTool()
{
  IsSketchTool = true;
  SketchType = SketchGeometryType.Rectangle;
  SketchOutputMode = SketchOutputMode.Screen; //required for 3D selection and identify.
}

protected override async Task<bool> OnSketchCompleteAsync(ArcGIS.Core.Geometry.Geometry 
                                                        geometry)
{
  var popupContent = await QueuedTask.Run(() =>
  {
    // Get the features that intersect the sketch geometry.
    var result = ActiveMapView.GetFeatures(geometry);

    // For each feature in the result create a new instance of our 
    // custom pop-up content class.
    List<PopupContent> popups = new List<PopupContent>();
    foreach (var kvp in result.ToDictionary<BasicFeatureLayer>())
    {
      kvp.Value.ForEach(id => popups.Add(new DynamicPopupContent(kvp.Key, id)));
    }

    // Flash the features that intersected the sketch geometry.
    ActiveMapView.FlashFeature(result);

    // Return the collection of pop-up content object.
    return popups;
  });

  //Show the custom pop-up with the custom commands and the default pop-up commands. 
  ActiveMapView.ShowCustomPopup(popupContent, null, true);
  return true;
}

internal class DynamicPopupContent : PopupContent
{
  private Dictionary<FieldDescription, double> _values = 
            new Dictionary <FieldDescription, double>();

  /// <summary>
  /// Constructor initializing the base class with the mapMember and object id associated 
  /// with the pop-up content.
  /// </summary>
  public DynamicPopupContent(MapMember mapMember, long id) : base(mapMember, id)
  {
    // Set property indicating the html content will be generated on demand when 
    // the content is viewed.
    IsDynamicContent = true;
  }

  /// <summary>
  /// Called the first time the pop-up content is viewed. This is good practice 
  /// when you may show a pop-up for multiple items at a time. 
  /// This allows you to delay generating the html content until 
  /// the item is actually viewed.
  /// </summary>
  protected override Task<string> OnCreateHtmlContent()
  {
    return QueuedTask.Run(() =>
    {
      var invalidPopup = "<p>Pop-up content could not be generated for this feature.</p>";

      var layer = MapMember as BasicFeatureLayer;
      if (layer == null) return invalidPopup;

      // Get all the visible numeric fields for the layer.
      var fields = layer.GetFieldDescriptions().
                Where(f => IsNumericFieldType(f.Type) && f.IsVisible);

      // Create a query filter using the fields found above and a where clause for 
      // the object id associated with this pop-up content.
      var tableDef = layer.GetTable().GetDefinition();
      var oidField = tableDef.GetObjectIDField();
      var qf = new QueryFilter() { WhereClause = $"{oidField} = {ObjectID}", 
              SubFields = string.Join(",", fields.Select(f => f.Name)) };

      // search
      var rows = layer.Search(qf);
      // Get the first row, there should only be 1 row.
      if (!rows.MoveNext()) return invalidPopup;
      var row = rows.Current;

      // Loop through the fields, extract the value for the row, and add to a dictionary.
      foreach (var field in fields)
      {
        var val = row[field.Name];
        if (val is DBNull || val == null) continue;
        double value;
        if (!Double.TryParse(val.ToString(), out value)) continue;
        if (value < 0) continue;
        _values.Add(field, value);
      }
      if (_values.Count == 0) return invalidPopup;

      // Construct a new html string that we will use to update our html template.
      StringBuilder sb = new StringBuilder();
      sb.AppendLine("data.addColumn('string', 'Votes')");
      sb.AppendLine("data.addColumn('number', 'Count')");
      sb.AppendLine("data.addColumn('number', 'In %')");
      sb.AppendLine("data.addRows([");

      //Add each value to the html string.
      var total = _values.Sum(kvp => kvp.Value);
      foreach (var v in _values)
      {
        var percentage = (v.Value / total) * 100;
        sb.AppendLine(string.Format("['{0}', {{v: {1} }}, {{v: {2} }}],", 
                v.Key.Alias, v.Value, percentage));
      }
      sb.AppendLine("]);");

      //Get the html from the template file on disk that we have packaged with our add-in.
      var htmlPath = Path.Combine(Path.GetDirectoryName
            (Assembly.GetExecutingAssembly().Location), "template.html");
      var html = File.ReadAllText(htmlPath);
      // Update the template with our custom html and 
      // return it to be displayed in the pop-up window.
      html = html.Replace("//data.addColumn", sb.ToString());
      return html;
    });
  }

  private bool IsNumericFieldType(FieldType type)
  {
    switch (type)
    {
      case FieldType.Double:
      case FieldType.Integer:
      case FieldType.Single:
      case FieldType.SmallInteger:
        return true;
      default:
        return false;
    }
  }
}