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Fix crash when trying to Focus an Entry from a background thread and improved the code so there are fewer direct access from the VM to the View (#1879)

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This commit is contained in:
Federico Maccaroni 2022-07-05 17:37:06 -03:00 committed by GitHub
parent a6ddc2496f
commit dbc1e5ea3e
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 39 additions and 30 deletions
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39
src/App/Pages/Accounts/LockPage.xaml.cs
View file

@ -25,8 +25,6 @@ namespace Bit.App.Pages
_vm = BindingContext as LockPageViewModel;
_vm.Page = this;
_vm.UnlockedAction = () => Device.BeginInvokeOnMainThread(async () => await UnlockedAsync());
MasterPasswordEntry = _masterPassword;
PinEntry = _pin;
if (Device.RuntimePlatform == Device.iOS)
{
@ -38,8 +36,17 @@ namespace Bit.App.Pages
}
}
public Entry MasterPasswordEntry { get; set; }
public Entry PinEntry { get; set; }
public Entry SecretEntry
{
get
{
if (_vm?.PinLock ?? false)
{
return _pin;
}
return _masterPassword;
}
}
public async Task PromptBiometricAfterResumeAsync()
{
@ -70,16 +77,12 @@ namespace Bit.App.Pages
_vm.AvatarImageSource = await GetAvatarImageSourceAsync();
await _vm.InitAsync();
_vm.FocusSecretEntry += PerformFocusSecretEntry;
if (!_vm.BiometricLock)
{
if (_vm.PinLock)
{
RequestFocus(PinEntry);
}
else
{
RequestFocus(MasterPasswordEntry);
}
RequestFocus(SecretEntry);
}
else
{
@ -99,6 +102,18 @@ namespace Bit.App.Pages
}
}
private void PerformFocusSecretEntry(int? cursorPosition)
{
Device.BeginInvokeOnMainThread(() =>
{
SecretEntry.Focus();
if (cursorPosition.HasValue)
{
SecretEntry.CursorPosition = cursorPosition.Value;
}
});
}
protected override bool OnBackButtonPressed()
{
if (_accountListOverlay.IsVisible)

28
src/App/Pages/Accounts/LockPageViewModel.cs
View file

@ -10,6 +10,7 @@ using Bit.Core.Enums;
using Bit.Core.Models.Domain;
using Bit.Core.Models.Request;
using Bit.Core.Utilities;
using Xamarin.CommunityToolkit.Helpers;
using Xamarin.Forms;
namespace Bit.App.Pages
@ -27,6 +28,7 @@ namespace Bit.App.Pages
private readonly IBiometricService _biometricService;
private readonly IKeyConnectorService _keyConnectorService;
private readonly ILogger _logger;
private readonly WeakEventManager<int?> _secretEntryFocusWeakEventManager = new WeakEventManager<int?>();
private string _email;
private bool _showPassword;
@ -133,6 +135,11 @@ namespace Bit.App.Pages
public string MasterPassword { get; set; }
public string Pin { get; set; }
public Action UnlockedAction { get; set; }
public event Action<int?> FocusSecretEntry
{
add => _secretEntryFocusWeakEventManager.AddEventHandler(value);
remove => _secretEntryFocusWeakEventManager.RemoveEventHandler(value);
}
public async Task InitAsync()
{
@ -346,11 +353,8 @@ namespace Bit.App.Pages
public void TogglePassword()
{
ShowPassword = !ShowPassword;
var page = (Page as LockPage);
var entry = PinLock ? page.PinEntry : page.MasterPasswordEntry;
var str = PinLock ? Pin : MasterPassword;
entry.Focus();
entry.CursorPosition = String.IsNullOrEmpty(str) ? 0 : str.Length;
var secret = PinLock ? Pin : MasterPassword;
_secretEntryFocusWeakEventManager.RaiseEvent(string.IsNullOrEmpty(secret) ? 0 : secret.Length, nameof(FocusSecretEntry));
}
public async Task PromptBiometricAsync()
@ -361,18 +365,8 @@ namespace Bit.App.Pages
return;
}
var success = await _platformUtilsService.AuthenticateBiometricAsync(null,
PinLock ? AppResources.PIN : AppResources.MasterPassword, () =>
{
var page = Page as LockPage;
if (PinLock)
{
page.PinEntry.Focus();
}
else
{
page.MasterPasswordEntry.Focus();
}
});
PinLock ? AppResources.PIN : AppResources.MasterPassword,
() => _secretEntryFocusWeakEventManager.RaiseEvent((int?)null, nameof(FocusSecretEntry)));
await _stateService.SetBiometricLockedAsync(!success);
if (success)
{