void AddChild(VisualElement view, IVisualElementRenderer oldRenderer = null, RendererPool pool = null, bool sameChildren = false)
{
var reference = Guid.NewGuid().ToString();
Performance.Start(reference);
if (CompressedLayout.GetIsHeadless(view))
{
var packager = new VisualElementPackager(_renderer, view);
if (_childPackagers == null)
{
_childPackagers = new Dictionary <BindableObject, VisualElementPackager>();
}
view.IsPlatformEnabled = true;
packager.Load();
_childPackagers[view] = packager;
}
else
{
if (_childViews == null)
{
_childViews = new List <IVisualElementRenderer>();
}
IVisualElementRenderer renderer = oldRenderer;
if (pool != null)
{
renderer = pool.GetFreeRenderer(view);
}
if (renderer == null)
{
Performance.Start(reference, "New renderer");
renderer = Platform.CreateRenderer(view, _renderer.View.Context);
Performance.Stop(reference, "New renderer");
}
if (renderer == oldRenderer)
{
Platform.SetRenderer(renderer.Element, null);
renderer.SetElement(view);
}
Performance.Start(reference, "Set renderer");
Platform.SetRenderer(view, renderer);
Performance.Stop(reference, "Set renderer");
Performance.Start(reference, "Add view");
if (!sameChildren)
{
(_renderer.View as ViewGroup)?.AddView(renderer.View);
_childViews.Add(renderer);
}
Performance.Stop(reference, "Add view");
Performance.Stop(reference);
}
}
void AddChild(VisualElement view, IVisualElementRenderer oldRenderer = null, RendererPool pool = null, bool sameChildren = false)
{
Performance.Start();
if (CompressedLayout.GetIsHeadless(view))
{
var packager = new VisualElementPackager(_renderer, view);
view.IsPlatformEnabled = true;
packager.Load();
}
else
{
if (_childViews == null)
{
_childViews = new List <IVisualElementRenderer>();
}
IVisualElementRenderer renderer = oldRenderer;
if (pool != null)
{
renderer = pool.GetFreeRenderer(view);
}
if (renderer == null)
{
Performance.Start("New renderer");
renderer = Platform.CreateRenderer(view);
Performance.Stop("New renderer");
}
if (renderer == oldRenderer)
{
Platform.SetRenderer(renderer.Element, null);
renderer.SetElement(view);
}
Performance.Start("Set renderer");
Platform.SetRenderer(view, renderer);
Performance.Stop("Set renderer");
Performance.Start("Add view");
if (!sameChildren)
{
(_renderer.View as ViewGroup)?.AddView(renderer.View);
_childViews.Add(renderer);
}
Performance.Stop("Add view");
}
Performance.Stop();
}
void AddChild(VisualElement view, IVisualElementRenderer oldRenderer = null, RendererPool pool = null, bool sameChildren = false)
{
Performance.Start();
if (_childViews == null)
{
_childViews = new List <IVisualElementRenderer>();
}
IVisualElementRenderer renderer = oldRenderer;
if (pool != null)
{
renderer = pool.GetFreeRenderer(view);
}
if (renderer == null)
{
Performance.Start("New renderer");
renderer = Platform.CreateRenderer(view);
Performance.Stop("New renderer");
}
if (renderer == oldRenderer)
{
Platform.SetRenderer(renderer.Element, null);
renderer.SetElement(view);
}
Performance.Start("Set renderer");
Platform.SetRenderer(view, renderer);
Performance.Stop("Set renderer");
Performance.Start("Add view");
if (!sameChildren)
{
_renderer.ViewGroup.AddView(renderer.ViewGroup);
_childViews.Add(renderer);
}
Performance.Stop("Add view");
Performance.Stop();
}
void AddChild(VisualElement view, IVisualElementRenderer oldRenderer = null, RendererPool pool = null, bool sameChildren = false)
{
Performance.Start();
if (_childViews == null)
_childViews = new List<IVisualElementRenderer>();
IVisualElementRenderer renderer = oldRenderer;
if (pool != null)
renderer = pool.GetFreeRenderer(view);
if (renderer == null)
{
Performance.Start("New renderer");
renderer = Platform.CreateRenderer(view);
Performance.Stop("New renderer");
}
if (renderer == oldRenderer)
{
Platform.SetRenderer(renderer.Element, null);
renderer.SetElement(view);
}
Performance.Start("Set renderer");
Platform.SetRenderer(view, renderer);
Performance.Stop("Set renderer");
Performance.Start("Add view");
if (!sameChildren)
{
_renderer.ViewGroup.AddView(renderer.ViewGroup);
_childViews.Add(renderer);
}
Performance.Stop("Add view");
Performance.Stop();
}
void SetElement(VisualElement oldElement, VisualElement newElement)
{
var reference = Guid.NewGuid().ToString();
Performance.Start(reference);
var sameChildrenTypes = false;
ReadOnlyCollection <Element> newChildren = null, oldChildren = null;
RendererPool pool = null;
if (oldElement != null)
{
if (newElement != null)
{
sameChildrenTypes = true;
oldChildren = ((IElementController)oldElement).LogicalChildren;
newChildren = ((IElementController)newElement).LogicalChildren;
if (oldChildren.Count == newChildren.Count)
{
for (var i = 0; i < oldChildren.Count; i++)
{
if (oldChildren[i].GetType() != newChildren[i].GetType())
{
sameChildrenTypes = false;
break;
}
}
}
else
{
sameChildrenTypes = false;
}
}
oldElement.ChildAdded -= _childAddedHandler;
oldElement.ChildRemoved -= _childRemovedHandler;
oldElement.ChildrenReordered -= _childReorderedHandler;
if (!sameChildrenTypes)
{
_childViews = new List <IVisualElementRenderer>();
pool = new RendererPool(_renderer, oldElement);
pool.ClearChildrenRenderers();
}
}
if (newElement != null)
{
Performance.Start(reference, "Setup");
newElement.ChildAdded += _childAddedHandler;
newElement.ChildRemoved += _childRemovedHandler;
newElement.ChildrenReordered += _childReorderedHandler;
newChildren = newChildren ?? ((IElementController)newElement).LogicalChildren;
for (var i = 0; i < newChildren.Count; i++)
{
IVisualElementRenderer oldRenderer = null;
if (oldChildren != null && sameChildrenTypes)
{
oldRenderer = _childViews[i];
}
AddChild((VisualElement)newChildren[i], oldRenderer, pool, sameChildrenTypes);
}
#if DEBUG
//if (renderer.Element.LogicalChildren.Any() && renderer.ViewGroup.ChildCount != renderer.Element.LogicalChildren.Count)
// throw new InvalidOperationException ("SetElement did not create the correct number of children");
#endif
EnsureChildOrder();
Performance.Stop(reference, "Setup");
}
Performance.Stop(reference);
}
void SetElement(VisualElement oldElement, VisualElement newElement)
{
Performance.Start();
var sameChildrenTypes = false;
ReadOnlyCollection<Element> newChildren = null, oldChildren = null;
RendererPool pool = null;
if (oldElement != null)
{
if (newElement != null)
{
sameChildrenTypes = true;
oldChildren = oldElement.LogicalChildren;
newChildren = newElement.LogicalChildren;
if (oldChildren.Count == newChildren.Count)
{
for (var i = 0; i < oldChildren.Count; i++)
{
if (oldChildren[i].GetType() != newChildren[i].GetType())
{
sameChildrenTypes = false;
break;
}
}
}
else
sameChildrenTypes = false;
}
oldElement.ChildAdded -= _childAddedHandler;
oldElement.ChildRemoved -= _childRemovedHandler;
oldElement.ChildrenReordered -= _childReorderedHandler;
if (!sameChildrenTypes)
{
_childViews = new List<IVisualElementRenderer>();
pool = new RendererPool(_renderer, oldElement);
pool.ClearChildrenRenderers();
}
}
if (newElement != null)
{
Performance.Start("Setup");
newElement.ChildAdded += _childAddedHandler;
newElement.ChildRemoved += _childRemovedHandler;
newElement.ChildrenReordered += _childReorderedHandler;
newChildren = newChildren ?? newElement.LogicalChildren;
for (var i = 0; i < newChildren.Count; i++)
{
IVisualElementRenderer oldRenderer = null;
if (oldChildren != null && sameChildrenTypes)
oldRenderer = _childViews[i];
AddChild((VisualElement)newChildren[i], oldRenderer, pool, sameChildrenTypes);
}
#if DEBUG
//if (renderer.Element.LogicalChildren.Any() && renderer.ViewGroup.ChildCount != renderer.Element.LogicalChildren.Count)
// throw new InvalidOperationException ("SetElement did not create the correct number of children");
#endif
Performance.Stop("Setup");
}
Performance.Stop();
}
