internal void RefreshFeatureInteractors()
{
var selectedFeaturesWithLayer = SelectedFeatureInteractors.Select(fe => new { Feature = fe.SourceFeature, fe.Layer }).ToList();
SelectedFeatureInteractors.Clear();
selectedFeaturesWithLayer.ForEach(fl => SelectedFeatureInteractors.Add(GetFeatureInteractor(fl.Layer, fl.Feature)));
SynchronizeTrackers();
}
private void UpdateMapControlSelection(bool fireSelectionChangedEvent)
{
SynchronizeTrackers();
IList <IFeature> selectedFeatures = SelectedFeatureInteractors.Select(t => t.SourceFeature).ToList();
MapControl.SelectedFeatures = selectedFeatures;
if (fireSelectionChangedEvent && SelectionChanged != null)
{
SelectionChanged(this, null);
}
}
/// TODO: note if no features are selected the selection rectangle maintains visible after mouse up
/// ISSUE 2373
private void HandleMultiSelectMouseUp(Coordinate worldPosition)
{
StopMultiSelect();
List <IFeature> selectedFeatures = null;
if (!KeyExtendSelection)
{
selectedFeatures = new List <IFeature>(SelectedFeatureInteractors.Select(fe => fe.SourceFeature).ToArray());
Clear(false);
}
var selectionPolygon = CreateSelectionPolygon(worldPosition);
if (null != selectionPolygon)
{
foreach (ILayer layer in Map.GetAllVisibleLayers(false))
{
//make sure parent layer is selectable or null
var parentLayer = Map.GetGroupLayerContainingLayer(layer);
if ((parentLayer == null || parentLayer.IsSelectable) && (layer.IsSelectable) && (layer is VectorLayer))
{
// do not use the maptool provider but the datasource of each layer.
var vectorLayer = (VectorLayer)layer;
var multiFeatures = vectorLayer.GetFeatures(selectionPolygon).Take(5000);
foreach (IFeature feature in multiFeatures)
{
if ((null != selectedFeatures) && (selectedFeatures.Contains(feature)))
{
continue;
}
AddSelection(vectorLayer, feature, false);
}
}
}
}
else
{
// if mouse hasn't moved handle as single select. A normal multi select uses the envelope
// of the geometry and this has as result that unwanted features will be selected.
ILayer selectedLayer;
var limit = (float)MapHelper.ImageToWorld(Map, 4);
var nearest = FindNearestFeature(worldPosition, limit, out selectedLayer, ol => ol.Visible);
if (null != nearest)
{
AddSelection(selectedLayer, nearest, false);
}
}
// synchronize with map selection, possible check if selection is already set; do not remove
UpdateMapControlSelection(true);
}
