forked from dotnet/maui
/
HandlerToRendererShim.cs
187 lines (142 loc) · 4.54 KB
/
HandlerToRendererShim.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
using System;
using System.ComponentModel;
using Microsoft.Maui.Controls.Internals;
using Microsoft.Maui.Controls.Platform;
using Microsoft.Maui.Graphics;
using Microsoft.Maui.Handlers;
using ERect = ElmSharp.Rect;
using EvasObject = ElmSharp.EvasObject;
namespace Microsoft.Maui.Controls.Compatibility.Platform.Tizen
{
public class LayoutHandlerToRendererShim : HandlerToRendererShim, ILayoutRenderer
{
LayoutHandler _layoutHandler;
public LayoutHandlerToRendererShim(LayoutHandler vh) : base(vh)
{
_layoutHandler = vh;
}
public void RegisterOnLayoutUpdated()
{
_layoutHandler.RegisterOnLayoutUpdated();
}
}
public class HandlerToRendererShim : IVisualElementRenderer
{
public HandlerToRendererShim(IViewHandler vh)
{
ViewHandler = vh;
}
IViewHandler ViewHandler { get; }
public VisualElement Element { get; private set; }
public EvasObject NativeView => ((INativeViewHandler)ViewHandler).NativeView;
public event EventHandler<VisualElementChangedEventArgs> ElementChanged;
public event EventHandler<PropertyChangedEventArgs> ElementPropertyChanged;
public void Dispose()
{
(ViewHandler as INativeViewHandler)?.Dispose();
}
public void SetElement(VisualElement element)
{
var oldElement = Element;
if (oldElement != null)
{
oldElement.PropertyChanged -= OnElementPropertyChanged;
oldElement.BatchCommitted -= OnBatchCommitted;
}
if (element != null)
{
element.PropertyChanged += OnElementPropertyChanged;
element.BatchCommitted += OnBatchCommitted;
}
Element = element;
ViewHandler.SetVirtualView((IView)element);
((IView)element).Handler = ViewHandler;
Platform.SetRenderer(element, this);
ElementChanged?.Invoke(this, new VisualElementChangedEventArgs(oldElement, Element));
(ViewHandler as INativeViewHandler)?.SetParent(new MockParentHandler(element.RealParent as VisualElement));
}
void OnBatchCommitted(object sender, EventArg<VisualElement> e)
{
ViewHandler?.NativeArrange(Element.Bounds);
}
void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
ElementPropertyChanged?.Invoke(this, new PropertyChangedEventArgs(e.PropertyName));
}
public SizeRequest GetDesiredSize(double widthConstraint, double heightConstraint)
{
var size = ViewHandler.GetDesiredSize(widthConstraint, heightConstraint);
return new SizeRequest(size, size);
}
public void SetElementSize(Size size)
{
Layout.LayoutChildIntoBoundingRegion(Element, new Rectangle(Element.X, Element.Y, size.Width, size.Height));
}
public void UpdateLayout()
{
ViewHandler.NativeArrange(Element.Bounds);
}
public ERect GetNativeContentGeometry()
{
return NativeView.Geometry;
}
class MockParentHandler : INativeViewHandler
{
public MockParentHandler(VisualElement parent)
{
RealParent = parent;
}
VisualElement RealParent { get; }
IVisualElementRenderer Renderer => RealParent != null ? Platform.GetRenderer(RealParent) : null;
public EvasObject NativeView => Renderer.NativeView;
public EvasObject ContainerView => NativeView;
public INativeViewHandler Parent => null;
public IView VirtualView => Renderer.Element as IView;
public IMauiContext MauiContext => null;
object IElementHandler.NativeView => NativeView;
object IViewHandler.ContainerView => NativeView;
bool IViewHandler.HasContainer { get => throw new NotImplementedException(); set => throw new NotImplementedException(); }
Maui.IElement IElementHandler.VirtualView => throw new NotImplementedException();
public void DisconnectHandler() { }
public void Dispose()
{
}
public Size GetDesiredSize(double widthConstraint, double heightConstraint)
{
throw new NotImplementedException();
}
public ERect GetNativeContentGeometry()
{
return Renderer?.GetNativeContentGeometry() ?? new ERect(0, 0, 0, 0);
}
public void NativeArrange(Rectangle frame)
{
throw new NotImplementedException();
}
public void SetMauiContext(IMauiContext mauiContext)
{
throw new NotImplementedException();
}
public void SetParent(INativeViewHandler parent)
{
throw new NotImplementedException();
}
public void SetVirtualView(IView view)
{
throw new NotImplementedException();
}
public void UpdateValue(string property)
{
throw new NotImplementedException();
}
public void SetVirtualView(Maui.IElement view)
{
throw new NotImplementedException();
}
public void Invoke(string command, object args)
{
throw new NotImplementedException();
}
}
}
}