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Connected.Components/Extensions/ElementReferenceExtensions.cs

67 lines
3.7 KiB

#nullable enable
using System.Diagnostics.CodeAnalysis;
using System.Reflection;
using Connected.Interop;
using Microsoft.AspNetCore.Components;
using Microsoft.JSInterop;
namespace Connected
{
[ExcludeFromCodeCoverage]
public static class ElementReferenceExtensions
{
private static readonly PropertyInfo? jsRuntimeProperty =
typeof(WebElementReferenceContext).GetProperty("JSRuntime", BindingFlags.Instance | BindingFlags.NonPublic);
internal static IJSRuntime? GetJSRuntime(this ElementReference elementReference)
{
if (elementReference.Context is not WebElementReferenceContext context)
{
return null;
}
return (IJSRuntime?)jsRuntimeProperty?.GetValue(context);
}
public static ValueTask FocusFirstAsync(this ElementReference elementReference, int skip = 0, int min = 0) =>
elementReference.GetJSRuntime()?.InvokeVoidAsync("elementRef.focusFirst", elementReference, skip, min) ?? ValueTask.CompletedTask;
public static ValueTask FocusLastAsync(this ElementReference elementReference, int skip = 0, int min = 0) =>
elementReference.GetJSRuntime()?.InvokeVoidAsync("elementRef.focusLast", elementReference, skip, min) ?? ValueTask.CompletedTask;
public static ValueTask SaveFocusAsync(this ElementReference elementReference) =>
elementReference.GetJSRuntime()?.InvokeVoidAsync("elementRef.saveFocus", elementReference) ?? ValueTask.CompletedTask;
public static ValueTask RestoreFocusAsync(this ElementReference elementReference) =>
elementReference.GetJSRuntime()?.InvokeVoidAsync("elementRef.restoreFocus", elementReference) ?? ValueTask.CompletedTask;
public static ValueTask BlurAsync(this ElementReference elementReference) =>
elementReference.GetJSRuntime()?.InvokeVoidAsync("elementRef.blur", elementReference) ?? ValueTask.CompletedTask;
public static ValueTask SelectAsync(this ElementReference elementReference) =>
elementReference.GetJSRuntime()?.InvokeVoidAsync("elementRef.select", elementReference) ?? ValueTask.CompletedTask;
public static ValueTask SelectRangeAsync(this ElementReference elementReference, int pos1, int pos2) =>
elementReference.GetJSRuntime()?.InvokeVoidAsync("elementRef.selectRange", elementReference, pos1, pos2) ?? ValueTask.CompletedTask;
public static ValueTask ChangeCssAsync(this ElementReference elementReference, string css) =>
elementReference.GetJSRuntime()?.InvokeVoidAsync("elementRef.changeCss", elementReference, css) ?? ValueTask.CompletedTask;
public static ValueTask<BoundingClientRect> MudGetBoundingClientRectAsync(this ElementReference elementReference) =>
elementReference.GetJSRuntime()?.InvokeAsync<BoundingClientRect>("elementRef.getBoundingClientRect", elementReference) ?? ValueTask.FromResult(new BoundingClientRect());
public static ValueTask<int[]> AddDefaultPreventingHandlers(this ElementReference elementReference, string[] eventNames) =>
elementReference.GetJSRuntime()?.InvokeAsync<int[]>("elementRef.addDefaultPreventingHandlers", elementReference, eventNames) ?? new ValueTask<int[]>(Array.Empty<int>());
public static ValueTask RemoveDefaultPreventingHandlers(this ElementReference elementReference, string[] eventNames, int[] listenerIds)
{
if (eventNames.Length != listenerIds.Length)
{
throw new ArgumentException($"Number of elements in {nameof(eventNames)} and {nameof(listenerIds)} has to match.");
}
return elementReference.GetJSRuntime()?.InvokeVoidAsync("elementRef.removeDefaultPreventingHandlers", elementReference, eventNames, listenerIds) ?? ValueTask.CompletedTask;
}
}
}