diff options
Diffstat (limited to 'Xamarin.Forms.Platform.Android/Renderers/FormsWebChromeClient.cs')
-rw-r--r-- | Xamarin.Forms.Platform.Android/Renderers/FormsWebChromeClient.cs | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.Android/Renderers/FormsWebChromeClient.cs b/Xamarin.Forms.Platform.Android/Renderers/FormsWebChromeClient.cs new file mode 100644 index 00000000..5d885774 --- /dev/null +++ b/Xamarin.Forms.Platform.Android/Renderers/FormsWebChromeClient.cs @@ -0,0 +1,74 @@ +using System; +using System.Collections.Generic; +using Android.App; +using Android.Content; +using Android.Webkit; +using Object = Java.Lang.Object; + +namespace Xamarin.Forms.Platform.Android +{ + public class FormsWebChromeClient : WebChromeClient + { + IStartActivityForResult _context; + List<int> _requestCodes; + + public override bool OnShowFileChooser(global::Android.Webkit.WebView webView, IValueCallback filePathCallback, FileChooserParams fileChooserParams) + { + base.OnShowFileChooser(webView, filePathCallback, fileChooserParams); + return ChooseFile(filePathCallback, fileChooserParams.CreateIntent(), fileChooserParams.Title); + } + + public void UnregisterCallbacks() + { + if (_requestCodes == null || _requestCodes.Count == 0 || _context == null) + return; + + foreach (int requestCode in _requestCodes) + _context.UnregisterActivityResultCallback(requestCode); + + _requestCodes = null; + } + + protected bool ChooseFile(IValueCallback filePathCallback, Intent intent, string title) + { + Action<Result, Intent> callback = (resultCode, intentData) => + { + if (filePathCallback == null) + return; + + Object result = ParseResult(resultCode, intentData); + filePathCallback.OnReceiveValue(result); + }; + + _requestCodes = _requestCodes ?? new List<int>(); + + int newRequestCode = _context.RegisterActivityResultCallback(callback); + + _requestCodes.Add(newRequestCode); + + _context.StartActivityForResult(Intent.CreateChooser(intent, title), newRequestCode); + + return true; + } + + protected override void Dispose(bool disposing) + { + if (disposing) + UnregisterCallbacks(); + base.Dispose(disposing); + } + + protected virtual Object ParseResult(Result resultCode, Intent data) + { + return FileChooserParams.ParseResult((int)resultCode, data); + } + + internal void SetContext(IStartActivityForResult startActivityForResult) + { + if (startActivityForResult == null) + throw new ArgumentNullException(nameof(startActivityForResult)); + + _context = startActivityForResult; + } + } +}
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