private async Task <StyleItemType> GetSelectedTypeFromGraphicsLayerAsync(GraphicsLayer graphicsLayers)
{
StyleItemType styleItemType = StyleItemType.PointSymbol; //default
//Get all selected graphics
List <Element> selectedElements = graphicsLayers.GetSelectedElements().ToList();
if (selectedElements.Count == 0)
{
return(styleItemType);
}
//Convert "Element" list to "GraphicElement" list.
var selectedGraphicElements = selectedElements.ConvertAll(x => (GraphicElement)x);
//Get the type of the first graphic to compare against
var firstGraphicElement = selectedElements.FirstOrDefault() as GraphicElement;
await QueuedTask.Run(() =>
{
var firstGraphicElementType = firstGraphicElement.GetGraphic().GetType();
//iterate to check if elements match
var differentGraphicTypes = selectedGraphicElements.FirstOrDefault(se => se.GetGraphic().GetType() != firstGraphicElementType);
if (differentGraphicTypes == null)
//Find out what that type is
{
var graphicElement = selectedElements.FirstOrDefault() as GraphicElement;
if (graphicElement.GetGraphic() is CIMPointGraphic)
{
styleItemType = StyleItemType.PointSymbol;
}
if (graphicElement.GetGraphic() is CIMTextGraphic)
{
styleItemType = StyleItemType.TextSymbol;
}
if (graphicElement.GetGraphic() is CIMLineGraphic)
{
styleItemType = StyleItemType.LineSymbol;
}
if (graphicElement.GetGraphic() is CIMPolygonGraphic)
{
styleItemType = StyleItemType.PolygonSymbol;
}
}
});
return(styleItemType);
}
private async Task GetStyleItemForGraphicsLayerAsync(GraphicsLayer graphicsLayer)
{
//Get all selected graphics
List <Element> selectedElements = graphicsLayer.GetSelectedElements().ToList();
if (selectedElements.Count == 0)
{
return;
}
if (!_isAllGraphicsSameType)
{
return;
}
//All graphics selected are the same now.
//Convert "Element" list to "GraphicElement" list.
var selectedGraphicElements = selectedElements.ConvertAll(x => (GraphicElement)x);
//Get the type of the first graphic to compare against
await QueuedTask.Run(() => {
var firstGraphicElement = selectedGraphicElements.FirstOrDefault().GetGraphic();
if (firstGraphicElement is CIMPointGraphic)
{
SelectedStyleItemType = StyleItemType.PointSymbol;
}
if (firstGraphicElement is CIMTextGraphic)
{
SelectedStyleItemType = StyleItemType.TextSymbol;
}
if (firstGraphicElement is CIMLineGraphic)
{
SelectedStyleItemType = StyleItemType.LineSymbol;
}
if (firstGraphicElement is CIMPolygonGraphic)
{
SelectedStyleItemType = StyleItemType.PolygonSymbol;
}
});
}
