66 lines
2.4 KiB
Plaintext
66 lines
2.4 KiB
Plaintext
 
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@inherits DComponentBase
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@* daisyUI Dropdown: https://daisyui.com/components/dropdown/ . The open state lives in C# (@bind-IsOpen):
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dropdown-open shows the content and dropdown-close keeps the focus-within rule from showing it while closed.
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While open, a transparent full-screen layer under the content closes it on an outside click; Escape closes it
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too. With Hover the CSS hover rule opens it instead. *@
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<div @attributes="AdditionalAttributes" class="@CssClass" @onkeydown="OnKeyDown">
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<div role="button" tabindex="0" class="@TriggerClass" aria-haspopup="true" aria-expanded="@(IsOpen ? "true" : "false")"
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@onclick="Toggle">
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@Trigger
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</div>
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@if (IsOpen)
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{
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<div class="fixed inset-0 z-[998] cursor-default" aria-hidden="true" @onclick="Close"></div>
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}
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<div tabindex="-1" class="@Cx("dropdown-content z-[999]", ContentClass)" @onclick="OnContentClick">
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@ChildContent
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</div>
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</div>
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@code {
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[Parameter] public RenderFragment Trigger { get; set; }
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[Parameter] public RenderFragment ChildContent { get; set; }
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[Parameter] public bool IsOpen { get; set; }
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[Parameter] public EventCallback<bool> IsOpenChanged { get; set; }
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[Parameter] public DDropdownPlacement Placement { get; set; }
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[Parameter] public DDropdownAlign Align { get; set; }
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/// <summary>Open on hover (dropdown-hover) as well as on click.</summary>
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[Parameter] public bool Hover { get; set; }
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/// <summary>Close after any click inside the content, e.g. on a menu item.</summary>
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[Parameter] public bool CloseOnContentClick { get; set; }
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[Parameter] public string TriggerClass { get; set; }
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[Parameter] public string ContentClass { get; set; }
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string CssClass => Cx("dropdown", PlacementClass, AlignClass,
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IsOpen ? "dropdown-open" : Hover ? "dropdown-hover" : "dropdown-close", Class);
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string PlacementClass => Placement switch
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{
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DDropdownPlacement.Top => "dropdown-top",
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DDropdownPlacement.Left => "dropdown-left",
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DDropdownPlacement.Right => "dropdown-right",
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_ => null
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};
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string AlignClass => Align switch
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{
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DDropdownAlign.Center => "dropdown-center",
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DDropdownAlign.End => "dropdown-end",
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_ => null
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};
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Task Toggle() => SetOpen(!IsOpen);
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Task Close() => SetOpen(false);
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Task OnContentClick() => CloseOnContentClick ? SetOpen(false) : Task.CompletedTask;
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Task OnKeyDown(KeyboardEventArgs e) => e.Key == "Escape" && IsOpen ? SetOpen(false) : Task.CompletedTask;
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async Task SetOpen(bool isOpen)
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{
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IsOpen = isOpen;
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await IsOpenChanged.InvokeAsync(isOpen);
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}
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}
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