62 lines
No EOL
1.8 KiB
Text
62 lines
No EOL
1.8 KiB
Text
@using Ljbc1994.Blazor.IntersectionObserver.API
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@using Ljbc1994.Blazor.IntersectionObserver.Components
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@using Iceshrimp.Assets.PhosphorIcons
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<IntersectionObserve OnChange="entry => OnChange(entry)">
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<div @ref="context.Ref.Current" class="@Class" style="@Style">
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@if (_state is State.Loading or State.Init)
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{
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<Icon Name="Icons.Spinner"/>
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}
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else
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{
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<button class="button" @onclick="Manual">Load more</button>
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}
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</div>
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</IntersectionObserve>
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@code {
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[Parameter] [EditorRequired] public EventCallback IntersectionChange { get; set; }
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[Parameter] [EditorRequired] public EventCallback ManualLoad { get; set; }
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[Parameter] public string? Class { get; set; }
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[Parameter] public bool RequireReset { get; init; }
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[Parameter] public string? Style { get; set; }
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private State _state;
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private async Task OnChange(IntersectionObserverEntry entry)
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{
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if (entry.IsIntersecting)
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{
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switch (_state)
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{
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case State.Loading:
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return;
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case State.Waiting or State.Init:
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_state = State.Loading;
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await IntersectionChange.InvokeAsync();
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break;
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}
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if (!RequireReset)
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{
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_state = State.Waiting;
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}
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}
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}
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private async Task Manual()
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{
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await ManualLoad.InvokeAsync();
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}
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private enum State
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{
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Init,
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Loading,
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Waiting
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}
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public void Reset()
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{
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_state = State.Waiting;
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}
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} |