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75 lines
2.2 KiB
75 lines
2.2 KiB
// Copyright (c) MudBlazor 2021
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// MudBlazor licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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using Microsoft.AspNetCore.Components;
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namespace Connected.Components;
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public partial class PopoverProvider : IDisposable
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{
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private bool _isConnectedToService = false;
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[Inject] public IPopoverService Service { get; set; }
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/// <summary>
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/// In some scenarios we need more than one ThemeProvider but we must not have more than one
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/// PopoverProvider. Set a cascading value with UsePopoverProvider=false to prevent it.
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/// </summary>
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[CascadingParameter(Name = "UsePopoverProvider")]
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public bool IsEnabled { get; set; } = true;
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public void Dispose()
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{
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Service.FragmentsChanged -= Service_FragmentsChanged;
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}
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protected override void OnInitialized()
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{
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if (IsEnabled == false)
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{
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return;
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}
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Service.FragmentsChanged += Service_FragmentsChanged;
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_isConnectedToService = true;
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}
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protected override void OnParametersSet()
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{
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base.OnParametersSet();
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if (IsEnabled == false && _isConnectedToService == true)
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{
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Service.FragmentsChanged -= Service_FragmentsChanged;
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_isConnectedToService = false;
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}
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else if (IsEnabled == true && _isConnectedToService == false)
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{
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Service.FragmentsChanged -= Service_FragmentsChanged; // make sure to avoid multiple registration
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Service.FragmentsChanged += Service_FragmentsChanged;
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_isConnectedToService = true;
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}
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}
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protected override async Task OnAfterRenderAsync(bool firstRender)
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{
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if (firstRender && IsEnabled && Service.ThrowOnDuplicateProvider)
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{
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await Service.InitializeIfNeeded();
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if (await Service.CountProviders() > 1)
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{
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throw new InvalidOperationException("Duplicate MudPopoverProvider detected. Please ensure there is only one provider, or disable this warning with PopoverOptions.ThrowOnDuplicateProvider.");
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}
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}
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await base.OnAfterRenderAsync(firstRender);
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}
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private void Service_FragmentsChanged(object sender, EventArgs e)
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{
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InvokeAsync(StateHasChanged);
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}
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}
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