diff options
Diffstat (limited to 'Xamarin.Forms.Core/WebView.cs')
| -rw-r--r-- | Xamarin.Forms.Core/WebView.cs | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/WebView.cs b/Xamarin.Forms.Core/WebView.cs new file mode 100644 index 00000000..06a5f72c --- /dev/null +++ b/Xamarin.Forms.Core/WebView.cs @@ -0,0 +1,126 @@ +using System; +using Xamarin.Forms.Platform; + +namespace Xamarin.Forms +{ + [RenderWith(typeof(_WebViewRenderer))] + public class WebView : View + { + public static readonly BindableProperty SourceProperty = BindableProperty.Create("Source", typeof(WebViewSource), typeof(WebView), default(WebViewSource), + propertyChanging: (bindable, oldvalue, newvalue) => + { + var source = oldvalue as WebViewSource; + if (source != null) + source.SourceChanged -= ((WebView)bindable).OnSourceChanged; + }, propertyChanged: (bindable, oldvalue, newvalue) => + { + var source = newvalue as WebViewSource; + var webview = (WebView)bindable; + if (source != null) + { + source.SourceChanged += webview.OnSourceChanged; + SetInheritedBindingContext(source, webview.BindingContext); + } + }); + + static readonly BindablePropertyKey CanGoBackPropertyKey = BindableProperty.CreateReadOnly("CanGoBack", typeof(bool), typeof(WebView), false); + + public static readonly BindableProperty CanGoBackProperty = CanGoBackPropertyKey.BindableProperty; + + static readonly BindablePropertyKey CanGoForwardPropertyKey = BindableProperty.CreateReadOnly("CanGoForward", typeof(bool), typeof(WebView), false); + + public static readonly BindableProperty CanGoForwardProperty = CanGoForwardPropertyKey.BindableProperty; + + public bool CanGoBack + { + get { return (bool)GetValue(CanGoBackProperty); } + internal set { SetValue(CanGoBackPropertyKey, value); } + } + + public bool CanGoForward + { + get { return (bool)GetValue(CanGoForwardProperty); } + internal set { SetValue(CanGoForwardPropertyKey, value); } + } + + [TypeConverter(typeof(WebViewSourceTypeConverter))] + public WebViewSource Source + { + get { return (WebViewSource)GetValue(SourceProperty); } + set { SetValue(SourceProperty, value); } + } + + public void Eval(string script) + { + EventHandler<EventArg<string>> handler = EvalRequested; + if (handler != null) + handler(this, new EventArg<string>(script)); + } + + public void GoBack() + { + EventHandler handler = GoBackRequested; + if (handler != null) + handler(this, EventArgs.Empty); + } + + public void GoForward() + { + EventHandler handler = GoForwardRequested; + if (handler != null) + handler(this, EventArgs.Empty); + } + + public event EventHandler<WebNavigatedEventArgs> Navigated; + + public event EventHandler<WebNavigatingEventArgs> Navigating; + + protected override void OnBindingContextChanged() + { + base.OnBindingContextChanged(); + + WebViewSource source = Source; + if (source != null) + { + SetInheritedBindingContext(source, BindingContext); + } + } + + protected override void OnPropertyChanged(string propertyName) + { + if (propertyName == "BindingContext") + { + WebViewSource source = Source; + if (source != null) + SetInheritedBindingContext(source, BindingContext); + } + + base.OnPropertyChanged(propertyName); + } + + protected void OnSourceChanged(object sender, EventArgs e) + { + OnPropertyChanged(SourceProperty.PropertyName); + } + + internal event EventHandler<EventArg<string>> EvalRequested; + + internal event EventHandler GoBackRequested; + + internal event EventHandler GoForwardRequested; + + internal void SendNavigated(WebNavigatedEventArgs args) + { + EventHandler<WebNavigatedEventArgs> handler = Navigated; + if (handler != null) + handler(this, args); + } + + internal void SendNavigating(WebNavigatingEventArgs args) + { + EventHandler<WebNavigatingEventArgs> handler = Navigating; + if (handler != null) + handler(this, args); + } + } +}
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