64 lines
2.1 KiB
C#
64 lines
2.1 KiB
C#
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using Ooui.Forms.Renderers;
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using System;
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using Xamarin.Forms;
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namespace Ooui.Forms.Cells
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{
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public class ViewCellView : CellView
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{
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private WeakReference<IVisualElementRenderer> _rendererRef;
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private ViewCell _viewCell;
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public ViewCell ViewCell
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{
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get { return _viewCell; }
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set
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{
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if (_viewCell == value)
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return;
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UpdateCell(value);
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}
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}
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private void UpdateCell(ViewCell cell)
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{
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if (_viewCell != null)
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Device.BeginInvokeOnMainThread(_viewCell.SendDisappearing);
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_viewCell = cell;
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Device.BeginInvokeOnMainThread(_viewCell.SendAppearing);
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IVisualElementRenderer renderer;
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if (_rendererRef == null || !_rendererRef.TryGetTarget(out renderer))
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renderer = GetNewRenderer();
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else
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{
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if (renderer.Element != null && renderer == Platform.GetRenderer(renderer.Element))
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renderer.Element.ClearValue(Platform.RendererProperty);
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var type = Xamarin.Forms.Internals.Registrar.Registered.GetHandlerType(_viewCell.View.GetType());
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var reflectableType = renderer as System.Reflection.IReflectableType;
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var rendererType = reflectableType != null ? reflectableType.GetTypeInfo().AsType() : renderer.GetType();
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if (rendererType == type || (renderer is DefaultRenderer && type == null))
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renderer.SetElement(_viewCell.View);
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else
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{
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renderer = GetNewRenderer();
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}
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}
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Platform.SetRenderer(_viewCell.View, renderer);
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}
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private IVisualElementRenderer GetNewRenderer()
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{
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var newRenderer = Platform.CreateRenderer(_viewCell.View);
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_rendererRef = new WeakReference<IVisualElementRenderer>(newRenderer);
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AppendChild(newRenderer.NativeView);
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return newRenderer;
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}
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}
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}
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