public void RemoveByLayerType <T>() where T : ILayer
{
this.Layers.RemoveAll(l => l is T && l.LayerName != Current.Instance.Earthwatcher.PlayingRegion + Constants.RegionLawLayerName);
var currentLayers = layerCollection.Where(l => l is T && !(l is BaseTileLayer) || (l.LayerName.EndsWith(Constants.RegionLawLayerName))).ToList();
foreach (var layer in currentLayers)
{
layerCollection.Remove(layer);
Current.Instance.LayerHelper.LayerCollection.Remove(layer);
}
}
/// <summary>
/// Removes all xMapServer base layers.
/// </summary>
/// <param name="layers"> The LayerCollection instance. </param>
public static void RemoveXMapBaseLayers(this LayerCollection layers)
{
var idx = layers.IndexOf(layers[BackgroundLayerName]);
BaseLayerSuccessor = layers.Count > idx + 1 ? layers[idx + 1].Name : null;
idx = layers.IndexOf(layers[LabelsLayerName]);
LabelLayerPredecessor = idx > 0 ? layers[idx - 1].Name : null;
layers.Remove(layers[BackgroundLayerName]);
layers.Remove(layers[LabelsLayerName]);
}
public void InsertAfterRemoving()
{
// arrange
var layerCollection = new LayerCollection();
var layer1 = new MemoryLayer()
{
Name = "Layer1"
};
var layer2 = new MemoryLayer()
{
Name = "Layer2"
};
var layer3 = new MemoryLayer()
{
Name = "Layer3"
};
layerCollection.Add(layer1);
layerCollection.Add(layer2);
layerCollection.Remove(layer1);
// act
layerCollection.Insert(1, layer3);
// assert
var list = layerCollection.ToList();
Assert.AreEqual(2, list.Count());
Assert.NotNull(list[0]);
Assert.AreEqual("Layer2", list[0].Name);
Assert.NotNull(list[1]);
Assert.AreEqual("Layer3", list[1].Name);
}
public void CopyToAfterRemovingItem()
{
// arrange
var layerCollection = new LayerCollection();
var layer1 = new MemoryLayer();
var layer2 = new MemoryLayer();
layerCollection.Add(layer1);
layerCollection.Add(layer2);
var size = layerCollection.Count();
var array = new ILayer[size];
layerCollection.Remove(layer1);
// act
layerCollection.CopyTo(array, 0);
// assert
Assert.AreEqual(2, array.Length);
Assert.NotNull(array[0], "first element not null");
// We have no crash but the seconds element is null.
// This might have unpleasant consequences.
Assert.Null(array[1], "second element IS null");
}
private void Delete_Layer_Click(object sender, RoutedEventArgs e)
{
ObservableCollection <DxfLayerExtended> layers = new ObservableCollection <DxfLayerExtended>(LayerList.SelectedItems.OfType <DxfLayerExtended>());
int index = LayerList.SelectedIndex;
for (int i = 0; i < layers.Count; i++)
{
DxfLayerExtended layer = layers[i];
if (layer.Name != "0")
{
LayerList.SelectedItems.Remove(layer);
LayerCollection.Remove(layer);
}
else
{
MessageBox.Show("Cannot Delete Default Layer \"0\"", "Warning");
}
}
if (LayerList.Items.Count > index)
{
LayerList.SelectedIndex = index;
}
else
{
LayerList.SelectedIndex = LayerList.Items.Count - 1;
}
}
/// <summary>
/// Removes a layer from the map.
/// </summary>
/// <param name="layer">The layer to remove.</param>
public void RemoveLayer(ILayer layer)
{
if (layer != null)
{
lock (Layers.LayersChangeSync)
{
_layers.Remove(layer);
}
}
}
public void RemoveLayer(string name)
{
var layers = layerCollection.FindLayer(name).ToList();
for (int i = 0; i < layers.Count(); i++)
{
layerCollection.Remove(layers[i]);
Layers.Remove(layers[i]);
}
OnLayersChanged(EventArgs.Empty);
}
private void UpdatePinLayer(Mapsui.Geometries.Point currentNodePoint)
{
LayerCollection layers = MyMapControl.Map.Layers;
if (layers.Count > 1)
{
layers.Remove(pinLayer);
}
pinLayer = WalkerPin.CreateWalkerLayer(currentNodePoint);
layers.Add(pinLayer);
}
public void PromoteLayer(Layer selectedLayer)
{
// Find the collection the layer is in.
LayerCollection owningCollection = IncludedLayers.Contains(selectedLayer) ? IncludedLayers : ExcludedLayers;
// Get the current index (position) of the layer.
int layerIndex = owningCollection.IndexOf(selectedLayer);
// Skip if the layer can't be moved because it is already at the top.
if (layerIndex < 1)
{
return;
}
// Move the layer by removing it and re-adding it at its old position minus 1.
owningCollection.Remove(selectedLayer);
owningCollection.Insert(layerIndex - 1, selectedLayer);
}
// when layers are added/removed
private void Layers_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
LayerCollection layers = (LayerCollection)sender;
// Put updating of measurable layers in a throttle timer, meaning that this logic will
// only be invoked once if the CollectionChanged event fires multiple times within two
// tenths of a second. This is necessary because changing to a basemap in a different
// spatial reference results in clearing and rebuilding the layers collection.
if (_updateMeasurableLayersThrottler == null)
{
_updateMeasurableLayersThrottler = new ThrottleTimer(20, () =>
{
// Check whether all layers are initialized
if (layers.Any(l => !l.IsInitialized))
{
layers.LayersInitialized += Layers_LayersInitialized; // Wait for initialization
}
else
{
UpdateMeasurableLayers(); // Update measurable layers collection now
}
});
}
_updateMeasurableLayersThrottler.Invoke();
// Check whether layers were added
if (e.NewItems != null)
{
// Hook into visibility changed events for added layers
foreach (Layer layer in e.NewItems)
{
layer.PropertyChanged += Layer_PropertyChanged;
if (layer is ArcGISDynamicMapServiceLayer)
{
ISublayerVisibilitySupport subLayerSupport = layer as ISublayerVisibilitySupport;
subLayerSupport.VisibilityChanged += SubLayerSupport_VisibilityChanged;
}
}
}
// Check whether layers were removed
if (e.OldItems != null)
{
// Unhook from visibility changed events for removed layers
foreach (Layer layer in e.OldItems)
{
layer.PropertyChanged -= Layer_PropertyChanged;
if (layer is ArcGISDynamicMapServiceLayer)
{
ISublayerVisibilitySupport subLayerSupport = layer as ISublayerVisibilitySupport;
subLayerSupport.VisibilityChanged -= SubLayerSupport_VisibilityChanged;
}
}
}
// If draw layer has been added to the map, check whether it is the top-most
if (layers.Contains(DrawLayer) && layers.IndexOf(DrawLayer) != layers.Count - 1)
{
// Draw layer is not top-most. Move it to the top by removing and re-adding it. Wrap in
// a begin invoke call so the collection is modified outside the CollectionChanged event.
Map.Dispatcher.BeginInvoke(() =>
{
layers.Remove(DrawLayer);
layers.Add(DrawLayer);
});
}
}
