protected internal void OnLayerRemoved()
{
if (LayerRemoved != null)
{
LayerRemoved.Invoke(this, EventArgs.Empty);
}
}
/// <summary>
/// Fires the LayerRemoved event.
/// </summary>
/// <param name="item">Layer that was removed.</param>
protected virtual void OnLayerRemoved(T item)
{
if (EventsSuspended)
{
return;
}
LayerRemoved?.Invoke(this, new LayerEventArgs(item));
}
/// <summary>
/// 移除图层
/// </summary>
/// <param name="layer">图层</param>
public void RemoveLayer(Layer layer)
{
int index = _Layers.IndexOf(layer);
_Layers.Remove(layer);
_DataSet.Tables.Remove(layer.Records);
_TreeNode.Nodes.Remove(layer.Node);
LayerRemoved?.Invoke(this, layer);
MapPerformaceChanged?.Invoke(this);//重绘一级地图
}
private async Task RemoveLayer(VectorLayer vectorLayer)
{
vectorLayer.PropertyChanged -= OnVectorLayerPropertyChanged;
LayerRemoved?.Invoke(vectorLayer);
await vectorLayer.DisposeAsync();
if (Contains(vectorLayer))
{
Remove(vectorLayer);
}
}
/// <summary>
/// Removes a layer that is at the specified index
/// </summary>
/// <param name="layerIndex">The index of the layer to remove</param>
/// <param name="dispose">Whether to dispose of the layer that was removed</param>
public void RemoveLayer(int layerIndex, bool dispose = true)
{
IFrameLayer layer = _frame.GetLayerAt(layerIndex);
BeforeLayerRemoved?.Invoke(this, new LayerControllerLayerRemovedEventArgs(layer));
_frame.RemoveLayerAt(layerIndex, dispose);
// Normalize active layer
_activeLayerIndex = ActiveLayerIndex;
LayerRemoved?.Invoke(this, new LayerControllerLayerRemovedEventArgs(layer));
}
private void btDel_Click(object Sender, System.EventArgs E)
{
if (selectedLayerControl == null)
{
return;
}
LayerRemoved?.Invoke(selectedLayerControl);
int layerIndex = flpLayers.Controls.IndexOf(selectedLayerControl);
flpLayers.Height -= selectedLayerControl.Height + 6;
flpLayers.Controls.Remove(selectedLayerControl);
int currentIndex = 0;
foreach (LayerControl lc in flpLayers.Controls)
{
if (layerIndex <= currentIndex)
{
LayerIndexChanged?.Invoke(lc.LayerName, currentIndex);
}
currentIndex++;
}
selectedLayerControl = null;
Refresh();
}
/// <summary>
/// Occurs when removing a layer. This also fires the LayerRemoved event.
/// </summary>
/// <param name="sender">Sender that raised the event.</param>
/// <param name="e">The event args.</param>
protected virtual void OnLayerRemoved(object sender, LayerEventArgs e)
{
LayerRemoved?.Invoke(sender, e);
}
private void OnLayerRemoved(ILayer layer)
{
LayerRemoved?.Invoke(layer);
}