/// <summary>
/// 初始化右上角 Toolbar Menu
/// </summary>
/// <typeparam name="TEnum">视图模型中定义的Menu枚举类型</typeparam>
/// <param name="viewModel">当前视图模型</param>
/// <param name="except">可选排除枚举项</param>
/// <returns></returns>
public static IReadOnlyDictionary <TEnum, ToolbarItem> InitToolbarItems <TEnum, TViewModel>(
this TViewModel viewModel,
IEnumerable <TEnum>?except = null)
where TEnum : struct, Enum
where TViewModel : ViewModelBase, IActionItem <TEnum>
{
var query = Enum2.GetAll <TEnum>().AsEnumerable();
if (except.Any_Nullable())
{
query = query.Except(except);
}
var command = ReactiveCommand.Create <TEnum>(viewModel.MenuItemClick);
var dict = query.ToDictionary(x => x, x =>
{
var item = new ToolbarItem
{
IconImageSource = viewModel.GetIcon(x),
Command = command,
CommandParameter = x,
Order = viewModel.IsPrimary(x) ? ToolbarItemOrder.Primary : ToolbarItemOrder.Secondary,
};
return(item);
});
R.Subscribe(() =>
{
foreach (var item in dict)
{
item.Value.Text = viewModel.ToString2(item.Key);
}
}).AddTo(viewModel);
return(dict);
}
public SettingsPageViewModel()
{
IconKey = nameof(SettingsPageViewModel);
SelectLanguage = R.Languages.FirstOrDefault(x => x.Key == UISettings.Language.Value);
this.WhenValueChanged(x => x.SelectLanguage, false)
.Subscribe(x => UISettings.Language.Value = x.Key);
UpdateChannels = Enum2.GetAll <UpdateChannelType>();
if (IApplication.IsDesktopPlatform)
{
SelectFont = R.Fonts.FirstOrDefault(x => x.Value == UISettings.FontName.Value);
this.WhenValueChanged(x => x.SelectFont, false)
.Subscribe(x => UISettings.FontName.Value = x.Value);
SelectImage_Click = ReactiveCommand.CreateFromTask(async() =>
{
FilePickerFileType fileTypes = new ValueTuple <string, string[]>[] {
("Image Files", new[] {
FileEx.BMP,
FileEx.JPG,
FileEx.JPEG,
FileEx.PNG,
FileEx.GIF,
FileEx.WEBP,
}),
//("All Files", new[] { "*", }),
};
await PickAsync(SetBackgroundImagePath, fileTypes);
});
ResetImage_Click = ReactiveCommand.Create(() => SetBackgroundImagePath(null));
}
}
public void Enums()
{
var appUpdateFailCodes = Enum2.GetAll <ApplicationUpdateFailCode>();
foreach (var item in appUpdateFailCodes)
{
_ = item.ToString2();
}
}
public AboutPageViewModel()
{
preferenceButtons = new(Enum2.GetAll <PreferenceButton>().Select(x => PreferenceButtonViewModel.Create(x, this)));
UserService.Current.WhenAnyValue(x => x.User).Subscribe(value =>
{
if (value == null)
{
PreferenceButtonViewModel.RemoveAuthorized(preferenceButtons, this);
}
else
{
var delAccount = preferenceButtons.FirstOrDefault(x => x.Id == PreferenceButton.账号注销);
if (delAccount == null)
{
delAccount = PreferenceButtonViewModel.Create(PreferenceButton.账号注销, this);
preferenceButtons.Add(delAccount);
}
}
}).AddTo(this);
}
static FileFormat()
{
ImageFormats = Enum2.GetAll <ImageFormat>().OrderByDescending(x => (byte)x).ToArray();
imgFileMagicNums = ImageFormats.ToDictionary(x => x, x => x.GetMagicNumber());
}
