sharee.bike-App/TINKLib/ViewModel/WhatsNew/Agb/AgbViewModel.cs

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C#
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using System;
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using System.ComponentModel;
using System.Threading.Tasks;
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using System.Windows.Input;
using TINK.View;
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using TINK.ViewModel.Info;
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using Xamarin.Forms;
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namespace TINK.ViewModel.WhatsNew.Agb
{
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public class AgbViewModel : INotifyPropertyChanged
{
/// <summary> Fired whenever a property changed.</summary>
public event PropertyChangedEventHandler PropertyChanged;
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/// <summary> Holds the name of the host.</summary>
private string HostName { get; }
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/// <summary> Holds value wether site caching is on or off.</summary>
bool IsSiteCachingOn { get; }
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/// <summary> Constructs AGB view model</summary>
/// <param name="isSiteCachingOn">Holds value wether site caching is on or off.</param>
/// <param name="uiIsoLangugageName">Two letter ISO language name.</param>
/// <param name="resourceProvider">Delegate to get an an embedded html ressource. Used as fallback if download from web page does not work and cache is empty.</param>
/// <param name="viewService">View service to close page.</param>
public AgbViewModel(
string hostName,
bool isSiteCachingOn,
Func<string, string> resourceProvider,
IViewService viewService)
{
HostName = hostName;
IsSiteCachingOn = isSiteCachingOn;
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ViewService = viewService
?? throw new ArgumentException($"Can not instantiate {typeof(WhatsNewViewModel)}-object. No view available.");
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ResourceProvider = resourceProvider
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?? throw new ArgumentException($"Can not instantiate {typeof(WhatsNewViewModel)}-object. No ressource provider centered.");
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}
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/// <summary> Gets the platfrom specific prefix. </summary>
private Func<string, string> ResourceProvider { get; set; }
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/// <summary> Agb information text.</summary>
private HtmlWebViewSource infoAgb;
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/// <summary> Agb information text.</summary>
public HtmlWebViewSource InfoAgb
{
get => infoAgb;
set
{
infoAgb = value;
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(InfoAgb)));
}
}
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/// <summary> Called when page is shown. </summary>
public async Task OnAppearing()
{
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InfoAgb = await InfoPageViewModel.GetAgb(HostName, "agbResourcePath", IsSiteCachingOn);
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}
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/// <summary> User clicks OK button.</summary>
public ICommand OnOk
{
get
{
return new Command(async () => await ViewService.PopModalAsync());
}
}
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/// <summary> Reference to view service object.</summary>
private IViewService ViewService;
}
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}