|
1 | | -using System; |
2 | | -using System.Runtime.ExceptionServices; |
3 | | -using Avalonia; |
4 | | -using Avalonia.Controls; |
5 | | -using Avalonia.Data; |
6 | | -using Avalonia.Input; |
7 | | -using Avalonia.Threading; |
8 | | - |
9 | | -namespace WebViewControl { |
10 | | - |
11 | | - partial class WebView : BaseControl { |
12 | | - |
13 | | - private bool IsInDesignMode => false; |
14 | | - |
15 | | - public static readonly StyledProperty<string> AddressProperty = |
16 | | - AvaloniaProperty.Register<WebView, string>(nameof(Address), defaultBindingMode: BindingMode.TwoWay); |
17 | | - |
18 | | - public string Address { |
19 | | - get => GetValue(AddressProperty); |
20 | | - set => SetValue(AddressProperty, value); |
21 | | - } |
22 | | - |
23 | | - protected override void OnPropertyChanged<T>(AvaloniaPropertyChangedEventArgs<T> change) { |
24 | | - base.OnPropertyChanged(change); |
25 | | - |
26 | | - if (change.Property == AddressProperty) { |
27 | | - InternalAddress = Address; |
28 | | - } |
29 | | - } |
30 | | - |
31 | | - partial void ExtraInitialize() { |
32 | | - VisualChildren.Add(chromium); |
33 | | - chromium.AddressChanged += (o, address) => ExecuteInUI(() => Address = address); |
34 | | - } |
35 | | - |
36 | | - protected override void OnKeyDown(KeyEventArgs e) { |
37 | | - if (AllowDeveloperTools && e.Key == Key.F12) { |
38 | | - ToggleDeveloperTools(); |
39 | | - e.Handled = true; |
40 | | - } |
41 | | - } |
42 | | - |
43 | | - protected override void OnGotFocus(GotFocusEventArgs e) { |
44 | | - if (!e.Handled) { |
45 | | - e.Handled = true; |
46 | | - base.OnGotFocus(e); |
47 | | - |
48 | | - // use async call to avoid reentrancy, otherwise the webview will fight to get the focus |
49 | | - Dispatcher.UIThread.Post(() => { |
50 | | - if (IsFocused) { |
51 | | - chromium.Focus(); |
52 | | - } |
53 | | - }, DispatcherPriority.Background); |
54 | | - } |
55 | | - } |
56 | | - |
57 | | - protected override void InternalDispose() => Dispose(); |
58 | | - |
59 | | - private void ForwardException(ExceptionDispatchInfo exceptionInfo) { |
60 | | - // TODO |
61 | | - } |
62 | | - |
63 | | - private T ExecuteInUI<T>(Func<T> action) { |
64 | | - if (Dispatcher.UIThread.CheckAccess()) { |
65 | | - return action(); |
66 | | - } |
67 | | - return Dispatcher.UIThread.InvokeAsync<T>(action).Result; |
68 | | - } |
69 | | - |
70 | | - private void AsyncExecuteInUI(Action action) { |
71 | | - if (isDisposing) { |
72 | | - return; |
73 | | - } |
74 | | - // use async call to avoid dead-locks, otherwise if the source action tries to to evaluate js it would block |
75 | | - Dispatcher.UIThread.InvokeAsync( |
76 | | - () => { |
77 | | - if (!isDisposing) { |
78 | | - ExecuteWithAsyncErrorHandling(action); |
79 | | - } |
80 | | - }, |
81 | | - DispatcherPriority.Normal); |
82 | | - } |
83 | | - |
84 | | - internal void InitializeBrowser(int initialWidth, int initialHeight) { |
85 | | - chromium.CreateBrowser(initialWidth, initialHeight); |
86 | | - } |
87 | | - |
88 | | - /// <summary> |
89 | | - /// Called when the webview is requesting focus. Return false to allow the |
90 | | - /// focus to be set or true to cancel setting the focus. |
91 | | - /// <paramref name="isSystemEvent">True if is a system focus event, or false if is a navigation</paramref> |
92 | | - /// </summary> |
93 | | - protected virtual bool OnSetFocus(bool isSystemEvent) { |
94 | | - var focusedElement = KeyboardDevice.Instance.FocusedElement; |
95 | | - return !(focusedElement == chromium || focusedElement == this); |
96 | | - } |
97 | | - } |
98 | | -} |
| 1 | +using System; |
| 2 | +using System.Runtime.ExceptionServices; |
| 3 | +using Avalonia; |
| 4 | +using Avalonia.Controls; |
| 5 | +using Avalonia.Data; |
| 6 | +using Avalonia.Input; |
| 7 | +using Avalonia.Threading; |
| 8 | + |
| 9 | +namespace WebViewControl { |
| 10 | + |
| 11 | + partial class WebView : BaseControl { |
| 12 | + |
| 13 | + private bool IsInDesignMode => false; |
| 14 | + |
| 15 | + public static readonly StyledProperty<string> AddressProperty = |
| 16 | + AvaloniaProperty.Register<WebView, string>(nameof(Address), defaultBindingMode: BindingMode.TwoWay); |
| 17 | + |
| 18 | + public string Address { |
| 19 | + get => GetValue(AddressProperty); |
| 20 | + set => SetValue(AddressProperty, value); |
| 21 | + } |
| 22 | + |
| 23 | + protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change) { |
| 24 | + base.OnPropertyChanged(change); |
| 25 | + |
| 26 | + if (change.Property == AddressProperty) { |
| 27 | + InternalAddress = Address; |
| 28 | + } |
| 29 | + } |
| 30 | + |
| 31 | + partial void ExtraInitialize() { |
| 32 | + VisualChildren.Add(chromium); |
| 33 | + chromium[!FocusableProperty] = this[!FocusableProperty]; |
| 34 | + chromium.AddressChanged += (o, address) => ExecuteInUI(() => Address = address); |
| 35 | + } |
| 36 | + |
| 37 | + protected override void OnKeyDown(KeyEventArgs e) { |
| 38 | + if (AllowDeveloperTools && e.Key == Key.F12) { |
| 39 | + ToggleDeveloperTools(); |
| 40 | + e.Handled = true; |
| 41 | + } |
| 42 | + } |
| 43 | + |
| 44 | + protected override void OnGotFocus(GotFocusEventArgs e) { |
| 45 | + if (!e.Handled) { |
| 46 | + e.Handled = true; |
| 47 | + base.OnGotFocus(e); |
| 48 | + |
| 49 | + // use async call to avoid reentrancy, otherwise the webview will fight to get the focus |
| 50 | + Dispatcher.UIThread.Post(() => { |
| 51 | + if (IsFocused) { |
| 52 | + chromium.Focus(); |
| 53 | + } |
| 54 | + }, DispatcherPriority.Background); |
| 55 | + } |
| 56 | + } |
| 57 | + |
| 58 | + protected override void InternalDispose() => Dispose(); |
| 59 | + |
| 60 | + private void ForwardException(ExceptionDispatchInfo exceptionInfo) { |
| 61 | + // TODO |
| 62 | + } |
| 63 | + |
| 64 | + private T ExecuteInUI<T>(Func<T> action) { |
| 65 | + if (Dispatcher.UIThread.CheckAccess()) { |
| 66 | + return action(); |
| 67 | + } |
| 68 | + return Dispatcher.UIThread.InvokeAsync<T>(action).Result; |
| 69 | + } |
| 70 | + |
| 71 | + private void AsyncExecuteInUI(Action action) { |
| 72 | + if (isDisposing) { |
| 73 | + return; |
| 74 | + } |
| 75 | + // use async call to avoid dead-locks, otherwise if the source action tries to to evaluate js it would block |
| 76 | + Dispatcher.UIThread.InvokeAsync( |
| 77 | + () => { |
| 78 | + if (!isDisposing) { |
| 79 | + ExecuteWithAsyncErrorHandling(action); |
| 80 | + } |
| 81 | + }, |
| 82 | + DispatcherPriority.Normal); |
| 83 | + } |
| 84 | + |
| 85 | + internal void InitializeBrowser(int initialWidth, int initialHeight) { |
| 86 | + chromium.CreateBrowser(initialWidth, initialHeight); |
| 87 | + } |
| 88 | + |
| 89 | + /// <summary> |
| 90 | + /// Called when the webview is requesting focus. Return false to allow the |
| 91 | + /// focus to be set or true to cancel setting the focus. |
| 92 | + /// <paramref name="isSystemEvent">True if is a system focus event, or false if is a navigation</paramref> |
| 93 | + /// </summary> |
| 94 | + protected virtual bool OnSetFocus(bool isSystemEvent) { |
| 95 | + // VisualRoot can be null when webview is not yet added to the Visual tree |
| 96 | + var focusedElement = TopLevel.GetTopLevel(this)?.FocusManager.GetFocusedElement(); |
| 97 | + return !(focusedElement == chromium || focusedElement == this); |
| 98 | + } |
| 99 | + } |
| 100 | +} |
0 commit comments