protected virtual List <ILifeCycle> NotifyParentVisibilityAndReturnNotLoadedControl(object node, bool isVisible)
{
var controlBase = node as ControlBaseViewModel;
Queue <ControlBaseViewModel> queue = new Queue <ControlBaseViewModel>();
List <ILifeCycle> controls = new List <ILifeCycle>();
//preload the children of the root control.
foreach (var child in controlBase.GetControlsIterator())
{
queue.Enqueue(child);
}
while (queue.Count > 0)
{
ControlBaseViewModel current = queue.Dequeue();
if (current == null)
{
continue;
}
if (current.VisibleState.HasFlag(VisibleState.Visible))
{
foreach (var child in current.GetControlsIterator())
{
queue.Enqueue(child);
}
}
bool currVisibility = current.Visible;
if (isVisible)
{
current.VisibleState |= VisibleState.ParentVisible;
if (current.Visible && !current.Loaded)
{
controls.Add(current);
}
}
else
{
current.VisibleState &= ~VisibleState.ParentVisible;
}
if (ViewManager != null && currVisibility != current.Visible)
{
ViewManager.Events.PublishOrEnqueueEvent("VISIBLECHANGED", current, current, System.EventArgs.Empty);
}
}
return(controls);
}
/// <summary>
/// This is a modified breath first search algorithm to fit with our necessity.
/// </summary>
public virtual void NotifyParentVisibility(object node, bool isVisible)
{
var controlBase = node as ControlBaseViewModel;
Queue <ControlBaseViewModel> queue = new Queue <ControlBaseViewModel>();
//preload the children of the root control.
foreach (var child in controlBase.GetControlsIterator())
{
queue.Enqueue(child);
}
while (queue.Count > 0)
{
ControlBaseViewModel current = queue.Dequeue();
if (current == null)
{
continue;
}
if (!isVisible || current.VisibleState.HasFlag(VisibleState.Visible))
{
foreach (var child in current.GetControlsIterator())
{
queue.Enqueue(child);
}
}
bool currVisibility = current.Visible;
if (isVisible)
{
current.VisibleState |= VisibleState.ParentVisible;
}
else
{
current.VisibleState &= ~VisibleState.ParentVisible;
}
if (ViewManager != null && currVisibility != current.Visible)
{
ViewManager.Events.PublishOrEnqueueEvent("VISIBLECHANGED", current, current, System.EventArgs.Empty);
}
}
}
