public void OnNewData(NewNodesEvent e) {
// avoid flickering of the MapIcons by Remove or Add only the Elements which are needed
// collection of all mapElemements which should be removed
ICollection<MapElement> elementToRemove = new List<MapElement>(mapControl.MapElements);
ICollection<Model.Node> dirtyElements = new List<Model.Node>();
foreach (Model.Node n in e.nodes) {
// check if node already exists on the map
if (nodeElementMap.Contains(n)) {
if (n.NodeTag == Model.NodeTag.RETRIEVED) {
// this element should not be removed
elementToRemove.Remove(nodeElementMap.Get(n));
} else {
dirtyElements.Add(n);
}
} else {
// create new element
AddNewMapIcons(n);
}
}
// remove all outdated mapelements
foreach (MapElement element in elementToRemove) {
mapControl.MapElements.Remove(element);
nodeElementMap.Remove(element);
}
elementToRemove.Clear();
foreach (Model.Node n in dirtyElements) {
AddNewMapIcons(n);
}
/*
// remove all MapIcons
nodeElementMap.Clear();
mapControl.MapElements.Clear();
// refresh all
foreach (Model.Node n in e.nodes) {
AddNewMapIcons(n);
}
*/
}
public void OnNewData(NewNodesEvent e) {
if (Filter != null) {
SetData(Filter.FilterNodes(DataHolder.Instance.Nodes));
} else {
SetData(e?.nodes);
}
}
public void RefreshFilter() {
_FilterdNodes = Filter.FilterNodes(_Nodes);
var filterChangedEvent = new FilterChangedEvent {
Filter = Filter
};
BusProvider.DefaultInstance.Post(filterChangedEvent);
var e = new NewNodesEvent() {
nodes = _FilterdNodes,
RefreshAll = false
};
Prefs.Filter = Filter;
BusProvider.DefaultInstance.Post(e);
}