94 lines
No EOL
2.9 KiB
Text
94 lines
No EOL
2.9 KiB
Text
@typeparam TItem
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<Space Direction="@Direction" Class="checkbox-button-group">
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@foreach (var item in DataSource)
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{
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<SpaceItem>
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@foreach (var item in Items)
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{
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if (SelectedKeys.Contains(item.Key))
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{
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if (ButtonSelectedTemplate != null)
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{
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@ButtonSelectedTemplate?.Invoke(item.DataItem)
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}
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else
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{
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<Button OnClick="() => Deselect(item)" Block Icon="@IconType.Fill.CheckCircle">@item.Label</Button>
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}
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}
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else
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{
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if (ButtonUnselectedTemplate != null)
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{
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@ButtonUnselectedTemplate?.Invoke(item.DataItem)
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}
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else
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{
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<Button OnClick="() => Select(item)" Block>@item.Label</Button>
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}
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}
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}
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</SpaceItem>
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}
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</Space>
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@code {
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[Parameter] public IEnumerable<TItem> DataSource { get; set; }
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[Parameter] public Func<TItem, object> KeySelector { get; set; }
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[Parameter] public Func<TItem, string> LabelSelector { get; set; }
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[Parameter] public IEnumerable<TItem> Selected { get; set; }
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[Parameter] public EventCallback<IEnumerable<TItem>> SelectedChanged { get; set; }
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[Parameter] public DirectionVHType Direction { get; set; } = DirectionVHType.Horizontal;
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[Parameter] public RenderFragment<TItem>? ButtonSelectedTemplate { get; set; }
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[Parameter] public RenderFragment<TItem>? ButtonUnselectedTemplate { get; set; }
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List<TItem> SelectedItems = new List<TItem>();
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List<string> SelectedKeys = new List<string>();
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IEnumerable<CheckboxButtonGroupItem<TItem>> Items { get; set; } = new List<CheckboxButtonGroupItem<TItem>>();
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class CheckboxButtonGroupItem<T>
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{
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public string Key { get; set; }
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public string Label { get; set; }
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public bool Selected { get; set; }
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public T DataItem { get; set; }
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}
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protected override async Task OnParametersSetAsync()
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{
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Items = DataSource.Select(i => new CheckboxButtonGroupItem<TItem>
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{
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Key = KeySelector.Invoke(i).ToString(),
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Label = LabelSelector.Invoke(i),
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Selected = false,
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DataItem = i
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});
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}
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async Task Select(CheckboxButtonGroupItem<TItem> item)
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{
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SelectedKeys.Add(item.Key);
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await UpdateSelected();
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}
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async Task Deselect(CheckboxButtonGroupItem<TItem> item)
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{
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SelectedKeys.Remove(item.Key);
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await UpdateSelected();
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}
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async Task UpdateSelected()
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{
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Selected = Items.Where(i => SelectedKeys.Contains(i.Key)).Select(i => i.DataItem);
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if (SelectedChanged.HasDelegate)
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await SelectedChanged.InvokeAsync(Selected);
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}
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} |