/// <summary>
/// Deselect the specified element
/// </summary>
/// <param name="container"></param>
public void DeselectElement(IDrawableContainer container)
{
container.HideGrippers();
container.Selected = false;
selectedElements.Remove(container);
FieldAggregator.UnbindElement(container);
if (_movingElementChanged != null)
{
SurfaceElementEventArgs eventArgs = new SurfaceElementEventArgs();
eventArgs.Elements = selectedElements;
_movingElementChanged(this, eventArgs);
}
}
/// <summary>
/// Select the supplied element
/// </summary>
/// <param name="container"></param>
public void SelectElement(IDrawableContainer container)
{
if (!selectedElements.Contains(container))
{
selectedElements.Add(container);
container.ShowGrippers();
container.Selected = true;
FieldAggregator.BindElement(container);
if (_movingElementChanged != null)
{
SurfaceElementEventArgs eventArgs = new SurfaceElementEventArgs();
eventArgs.Elements = selectedElements;
_movingElementChanged(this, eventArgs);
}
container.Invalidate();
}
}
/// <summary>
/// Deselect all the selected elements
/// </summary>
public void DeselectAllElements()
{
if (HasSelectedElements)
{
while (selectedElements.Count > 0)
{
IDrawableContainer element = selectedElements[0];
element.Invalidate();
element.HideGrippers();
element.Selected = false;
selectedElements.Remove(element);
FieldAggregator.UnbindElement(element);
}
if (_movingElementChanged != null)
{
SurfaceElementEventArgs eventArgs = new SurfaceElementEventArgs();
eventArgs.Elements = selectedElements;
_movingElementChanged(this, eventArgs);
}
}
}
/// <summary>
/// Remove all the selected elements
/// </summary>
public void RemoveSelectedElements()
{
if (HasSelectedElements)
{
// As RemoveElement will remove the element from the selectedElements list we need to copy the element
// to another list.
List<DrawableContainer> elementsToRemove = new List<DrawableContainer>();
foreach (DrawableContainer element in selectedElements)
{
// Collect to remove later
elementsToRemove.Add(element);
}
// Remove now
foreach (DrawableContainer element in elementsToRemove)
{
RemoveElement(element, true);
}
selectedElements.Clear();
if (_movingElementChanged != null)
{
SurfaceElementEventArgs eventArgs = new SurfaceElementEventArgs();
eventArgs.Elements = selectedElements;
_movingElementChanged(this, eventArgs);
}
}
}
