32 lines
1.3 KiB
Plaintext
32 lines
1.3 KiB
Plaintext
 
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@inherits DComponentBase
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@implements IDisposable
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@* One item of a DAccordion: a DCollapse (so collapse + neo-raised, keyboard and aria-expanded come from there) whose
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open state is the accordion's Active index. Opening it closes the others; clicking it while open closes it. *@
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<DCollapse @attributes="AdditionalAttributes" IsOpen="@IsOpen" IsOpenChanged="OnIsOpenChanged" Icon="@Parent.Icon"
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Disabled="@Disabled" HeaderClass="@HeaderClass" ContentClass="@ContentClass" Header="@Header"
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Class="@Cx(Parent.Joined ? "join-item shadow-none!" : null, Class)">
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@ChildContent
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</DCollapse>
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@code {
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[CascadingParameter] DAccordion Parent { get; set; }
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[Parameter] public RenderFragment Header { get; set; }
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[Parameter] public RenderFragment ChildContent { get; set; }
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[Parameter] public bool Disabled { get; set; }
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[Parameter] public string HeaderClass { get; set; }
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[Parameter] public string ContentClass { get; set; }
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bool IsOpen => Parent.Active >= 0 && Parent.Active == Parent.IndexOf(this);
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protected override void OnInitialized()
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{
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if (Parent is null)
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throw new InvalidOperationException($"{nameof(DAccordionItem)} must be inside a {nameof(DAccordion)}.");
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Parent.Add(this);
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}
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Task OnIsOpenChanged(bool isOpen) => Parent.Select(isOpen ? Parent.IndexOf(this) : -1);
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public void Dispose() => Parent?.Remove(this);
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}
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