/*
* public override CGSize SizeThatFits (CGSize size)
* {
* return new CGSize ((nfloat)0, (nfloat)0);
* }
*/
protected override void Dispose(bool disposing)
{
if ((this.flags & VisualElementRendererFlags.Disposed) != (VisualElementRendererFlags)0)
{
return;
}
this.flags = this.flags | VisualElementRendererFlags.Disposed;
if (disposing)
{
if (this.events != null)
{
this.events.Dispose();
this.events = (EventTracker)null;
}
if (this.tracker != null)
{
this.tracker.Dispose();
this.tracker = (VisualElementTracker)null;
}
if (this.packager != null)
{
this.packager.Dispose();
this.packager = (VisualElementPackager)null;
}
Platform.SetRenderer((VisualElement)this.Element, (IVisualElementRenderer)null);
this.SetElement(default(TElement));
this.Element = default(TElement);
}
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if ((_flags & VisualElementRendererFlags.Disposed) != 0)
{
return;
}
_flags |= VisualElementRendererFlags.Disposed;
if (disposing)
{
if (_events != null)
{
_events.Dispose();
_events = null;
}
if (_tracker != null)
{
_tracker.Dispose();
_tracker = null;
}
if (_packager != null)
{
_packager.Dispose();
_packager = null;
}
Platform.SetRenderer(Element, null);
SetElement(null);
Element = null;
}
base.Dispose(disposing);
}
public void Init(IVisualElementRenderer renderer, VisualElementRendererFlags flags = VisualElementRendererFlags.AutoPackage | VisualElementRendererFlags.AutoTrack)
{
_flags = flags;
_packager = new VisualElementPackager(renderer);
_events = new EventTracker(renderer);
_tracker = new VisualElementTracker(renderer);
_tracker.NativeControlUpdated += OnNativeControlUpdated;
if (AutoTrack)
{
if (renderer is UIView uiView)
{
_events.LoadEvents(uiView);
}
else
{
throw new InvalidRendererException("IVisualElementRenderer must be of type 'UIView'");
}
}
if (AutoPackage)
{
_packager?.Load();
}
}
protected virtual void Dispose(bool disposing)
{
if (IsDisposed || !disposing)
{
return;
}
_flags |= VisualElementRendererFlags.Disposed;
if (_events != null)
{
_events.Dispose();
_events = null;
}
if (_tracker != null)
{
_tracker.Dispose();
_tracker = null;
}
if (_packager != null)
{
_packager.Dispose();
_packager = null;
}
}
protected override void Dispose(bool disposing)
{
if (CheckFlagsForDisposed())
{
return;
}
_flags |= VisualElementRendererFlags.Disposed;
if (disposing)
{
SetOnClickListener(null);
SetOnTouchListener(null);
EffectUtilities.UnregisterEffectControlProvider(this, Element);
if (Tracker != null)
{
Tracker.Dispose();
Tracker = null;
}
if (_packager != null)
{
_packager.Dispose();
_packager = null;
}
if (_gestureManager != null)
{
_gestureManager.Dispose();
_gestureManager = null;
}
if (ManageNativeControlLifetime)
{
int count = ChildCount;
for (var i = 0; i < count; i++)
{
AView child = GetChildAt(i);
child.Dispose();
}
}
if (Element != null)
{
Element.PropertyChanged -= _propertyChangeHandler;
if (Platform.GetRenderer(Element) == this)
{
Platform.SetRenderer(Element, null);
}
Element = null;
}
}
base.Dispose(disposing);
}
/// <summary>
/// Disposes of underlying resources.
/// </summary>
/// <param name="disposing">True if the memory release was requested on demand.</param>
protected virtual void Dispose(bool disposing)
{
if (IsDisposed)
{
return;
}
_flags |= VisualElementRendererFlags.Disposed;
if (disposing)
{
// This is the reason why I call SendDisappearing() here.
// When OnChildRemove is called first like how it is called in Navigation.PopToRootAsync(),
// you can not controll using SendDisappearing() on the lower class.
(Element as IPageController)?.SendDisappearing();
if (Element != null)
{
Element.PropertyChanged -= OnElementPropertyChanged;
Element.BatchCommitted -= OnBatchCommitted;
Element.ChildAdded -= OnChildAdded;
Element.ChildRemoved -= OnChildRemoved;
Element.ChildrenReordered -= OnChildrenReordered;
Element.FocusChangeRequested -= OnFocusChangeRequested;
var logicalChildren = (Element as IElementController).LogicalChildren;
foreach (var child in logicalChildren)
{
Platform.GetRenderer(child)?.Dispose();
}
if (Platform.GetRenderer(Element) == this)
{
Platform.SetRenderer(Element, null);
}
// Reset Element geometry, to re-calculate when Renderer was re-attached
Element.Layout(new Rectangle(0, 0, -1, -1));
Element = default(TElement);
}
if (NativeView != null)
{
NativeView.Deleted -= NativeViewDeleted;
NativeView.Unrealize();
NativeView = null;
}
if (_customFocusManager.IsValueCreated)
{
_customFocusManager.Value.Dispose();
}
}
}
public void Init(IVisualElementRenderer renderer, VisualElementRendererFlags flags = VisualElementRendererFlags.AutoPackage | VisualElementRendererFlags.AutoTrack)
{
_flags = flags;
_packager = new VisualElementPackager(renderer);
_tracker = new VisualElementTracker(renderer);
_gestureManager = new GestureManager(renderer);
if (AutoPackage)
{
_packager?.Load();
}
}
protected override void Dispose(bool disposing)
{
if ((_flags & VisualElementRendererFlags.Disposed) != 0)
{
return;
}
_flags |= VisualElementRendererFlags.Disposed;
if (disposing)
{
SetOnClickListener(null);
SetOnTouchListener(null);
if (Tracker != null)
{
Tracker.Dispose();
Tracker = null;
}
if (_packager != null)
{
_packager.Dispose();
_packager = null;
}
if (ManageNativeControlLifetime)
{
int count = ChildCount;
for (var i = 0; i < count; i++)
{
AView child = GetChildAt(i);
child.Dispose();
}
}
RemoveAllViews();
if (Element != null)
{
Element.PropertyChanged -= _propertyChangeHandler;
if (Platform.GetRenderer(Element) == this)
{
Platform.SetRenderer(Element, null);
}
Element = null;
}
}
base.Dispose(disposing);
}
/// <summary>
/// Disposes of underlying resources.
/// </summary>
/// <param name="disposing">True if the memory release was requested on demand.</param>
protected virtual void Dispose(bool disposing)
{
if (IsDisposed)
{
return;
}
_flags |= VisualElementRendererFlags.Disposed;
if (disposing)
{
if (Element != null)
{
Element.PropertyChanged -= OnElementPropertyChanged;
Element.BatchCommitted -= OnBatchCommitted;
Element.ChildAdded -= OnChildAdded;
Element.ChildRemoved -= OnChildRemoved;
Element.ChildrenReordered -= OnChildrenReordered;
Element.FocusChangeRequested -= OnFocusChangeRequested;
var logicalChildren = (Element as IElementController).LogicalChildren;
foreach (var child in logicalChildren)
{
Platform.GetRenderer(child)?.Dispose();
}
if (Platform.GetRenderer(Element) == this)
{
Platform.SetRenderer(Element, null);
}
// Reset Element geometry, to re-calculate when Renderer was re-attached
Element.Layout(new Rectangle(0, 0, -1, -1));
Element = default(TElement);
}
if (NativeView != null)
{
NativeView.Deleted -= NativeViewDeleted;
NativeView.Unrealize();
_view = null;
}
if (_customFocusManager.IsValueCreated)
{
_customFocusManager.Value.Dispose();
}
}
}
/// <summary>
/// Notification that the property of the associated element has changed.
/// </summary>
/// <param name="sender">Object which sent the notification.</param>
/// <param name="e">Event parameters.</param>
protected virtual void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (Element.Batched)
{
if (e.PropertyName == VisualElement.XProperty.PropertyName ||
e.PropertyName == VisualElement.YProperty.PropertyName ||
e.PropertyName == VisualElement.WidthProperty.PropertyName ||
e.PropertyName == VisualElement.HeightProperty.PropertyName)
{
_flags |= VisualElementRendererFlags.NeedsLayout;
}
else if (e.PropertyName == VisualElement.TranslationXProperty.PropertyName ||
e.PropertyName == VisualElement.TranslationYProperty.PropertyName ||
e.PropertyName == VisualElement.RotationProperty.PropertyName ||
e.PropertyName == VisualElement.RotationXProperty.PropertyName ||
e.PropertyName == VisualElement.RotationYProperty.PropertyName ||
e.PropertyName == VisualElement.ScaleProperty.PropertyName ||
e.PropertyName == VisualElement.AnchorXProperty.PropertyName ||
e.PropertyName == VisualElement.AnchorYProperty.PropertyName)
{
_flags |= VisualElementRendererFlags.NeedsTransformation;
}
else
{
_batchedProperties.Add(e.PropertyName);
}
return;
}
Action <bool> init;
if (_propertyHandlersWithInit.TryGetValue(e.PropertyName, out init))
{
init(false);
}
else
{
Action handler;
if (_propertyHandlers.TryGetValue(e.PropertyName, out handler))
{
handler();
}
}
}
void OnBatchCommitted(object sender, EventArg <VisualElement> e)
{
if (_flags.HasFlag(VisualElementRendererFlags.NeedsLayout))
{
UpdateLayout();
// UpdateLayout already updates transformation, clear NeedsTranformation flag then
_flags &= ~VisualElementRendererFlags.NeedsTransformation;
_flags ^= VisualElementRendererFlags.NeedsLayout;
}
if (_flags.HasFlag(VisualElementRendererFlags.NeedsTransformation))
{
ApplyTransformation();
_flags ^= VisualElementRendererFlags.NeedsTransformation;
}
foreach (string property in _batchedProperties)
{
OnElementPropertyChanged(this, new PropertyChangedEventArgs(property));
}
_batchedProperties.Clear();
}
protected override void Dispose(bool disposing)
{
if ((_flags & VisualElementRendererFlags.Disposed) != 0)
{
return;
}
_flags |= VisualElementRendererFlags.Disposed;
if (disposing)
{
if (_events != null)
{
_events.Dispose();
_events = null;
}
if (_tracker != null)
{
_tracker.Dispose();
_tracker = null;
}
if (_packager != null)
{
_packager.Dispose();
_packager = null;
}
// The ListView can create renderers and unhook them from the Element before Dispose is called in CalculateHeightForCell.
// Thus, it is possible that this work is already completed.
if (Element != null)
{
Element.ClearValue(Platform.RendererProperty);
SetElement(null);
}
}
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if ((_flags & VisualElementRendererFlags.Disposed) != 0)
{
return;
}
_flags |= VisualElementRendererFlags.Disposed;
if (disposing)
{
if (Tracker != null)
{
Tracker.Dispose();
Tracker = null;
}
if (_packager != null)
{
_packager.Dispose();
_packager = null;
}
if (_scaleDetector != null && _scaleDetector.IsValueCreated)
{
_scaleDetector.Value.Dispose();
_scaleDetector = null;
}
if (_gestureListener != null)
{
_gestureListener.Dispose();
_gestureListener = null;
}
if (ManageNativeControlLifetime)
{
int count = ChildCount;
for (var i = 0; i < count; i++)
{
AView child = GetChildAt(i);
child.Dispose();
}
}
RemoveAllViews();
if (Element != null)
{
Element.PropertyChanged -= _propertyChangeHandler;
UnsubscribeGestureRecognizers(Element);
if (Platform.GetRenderer(Element) == this)
{
Platform.SetRenderer(Element, null);
}
Element = null;
}
}
base.Dispose(disposing);
}