/// <summary>
/// Process cluster graphic mouse events.
/// </summary>
/// <param name="clusterGraphic">Cluster graphic.</param>
/// <param name="clickedGraphic">Last clicked item.</param>
private void _ProcessClusterGraphicMouseEvents(ClusterGraphicObject clusterGraphic, Graphic clickedGraphic)
{
Debug.Assert(clusterGraphic != null);
Debug.Assert(clickedGraphic != null);
Debug.Assert(_clustering != null);
Debug.Assert(_objectLayers != null);
if (!_clustering.ClusterExpanded)
{
_clustering.ExpandIfNeeded(clusterGraphic);
}
else
{
IList <object> clusteredData = _clustering.GetClusteredData(clusterGraphic);
ObjectLayer layer = MapHelpers.GetLayerWithData(clusteredData[0], _objectLayers);
if (clickedGraphic == clusterGraphic && layer.Selectable)
{
if (Keyboard.Modifiers != ModifierKeys.Shift && Keyboard.Modifiers != ModifierKeys.Control)
{
_mapControl.SelectedItems.Clear();
}
_ProcessSelectionChanges(clusteredData, layer);
}
}
}
/// <summary>
/// Check graphics count
/// </summary>
/// <param name="clusterGraphic">Cluster graphic to expand</param>
/// <returns>True if exceeded</returns>
private bool _MaxGraphicsToExpandExceeded(ClusterGraphicObject clusterGraphic)
{
IList <object> clusterData = GetClusteredData(clusterGraphic);
ObjectLayer objectLayer = MapHelpers.GetLayerWithData(clusterData[0], _mapctrl.ObjectLayers);
FlareClusterer clusterer = (FlareClusterer)objectLayer.MapLayer.Clusterer;
int objectsInCluster = (int)clusterGraphic.Attributes[ALClusterer.COUNT_PROPERTY_NAME];
bool exceeded = objectsInCluster > clusterer.MaximumFlareCount;
return(exceeded);
}
/// <summary>
/// React on selected items changed.
/// </summary>
/// <param name="sender">Ignored.</param>
/// <param name="e">Collection changed args.</param>
private void _SelectionCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
Debug.Assert(_objectLayers != null);
Debug.Assert(_clustering != null);
_StoreSelectionIfNeeded(e);
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
{
foreach (object data in e.NewItems)
{
// Select item in object layer.
ObjectLayer objectLayer = MapHelpers.GetLayerWithData(data, _objectLayers);
if (objectLayer != null)
{
objectLayer.SelectedItems.Add(data);
}
// Select in clustering layer also.
if (_clustering != null)
{
_clustering.AddToSelection(data);
}
}
break;
}
case NotifyCollectionChangedAction.Remove:
{
foreach (object data in e.OldItems)
{
// Deselect item in object layer.
ObjectLayer objectLayer = MapHelpers.GetLayerWithData(data, _objectLayers);
if (objectLayer != null)
{
objectLayer.SelectedItems.Remove(data);
}
// Remove from selection in clustering layer also.
if (_clustering != null)
{
_clustering.RemoveFromSelection(data);
}
}
break;
}
case NotifyCollectionChangedAction.Reset:
{
foreach (ObjectLayer objectLayer in _objectLayers)
{
objectLayer.SelectedItems.Clear();
}
break;
}
default:
Debug.Assert(false);
break;
}
}
