Connected.Components/Components/Snackbar/SnackbarElement.razor.cs

// Copyright (c) Alessandro Ghidini. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.
// Changes and improvements Copyright (c) The MudBlazor Team

using Microsoft.AspNetCore.Components;
using static System.String;

namespace Connected.Components;

public partial class SnackbarElement : UIComponent, IDisposable
{
	[Parameter]
	public Snackbar Snackbar { get; set; }

	/// <summary>
	/// Custom close icon.
	/// </summary>
	[Parameter] public string CloseIcon { get; set; } = Icons.Material.Filled.Close;

	// appearance
	private string Action => Snackbar?.State.Options.Action;
	private ThemeColor ActionColor => Snackbar?.State.Options.ActionColor ?? ThemeColor.Default;
	private Variant ActionVariant => Snackbar?.State.Options.ActionVariant ?? Snackbar?.State.Options.SnackbarVariant ?? Variant.Text;
	private string AnimationStyle => Snackbar?.State.AnimationStyle + Style;
	private string SnackbarClass => Snackbar?.State.SnackbarClass;
	private RenderFragment Css;
	private bool ShowActionButton => Snackbar?.State.ShowActionButton == true;
	private bool ShowCloseIcon => Snackbar?.State.ShowCloseIcon == true;

	// icon
	private bool HideIcon => Snackbar?.State.HideIcon == true;
	private string Icon => Snackbar?.State.Icon;
	private ThemeColor IconColor => Snackbar?.State.Options.IconColor ?? ThemeColor.Inherit;
	private Size IconSize => Snackbar?.State.Options.IconSize ?? Size.Medium;

	// behavior
	private void ActionClicked() => Snackbar?.Clicked(false);
	private void CloseIconClicked() => Snackbar?.Clicked(true);
	private SnackbarMessage Message => Snackbar?.SnackbarMessage;

	private void SnackbarClicked()
	{
		if (!ShowActionButton)
			Snackbar?.Clicked(false);
	}

	private void SnackbarUpdated()
	{
		InvokeAsync(StateHasChanged);
	}

	protected override void OnInitialized()
	{
		if (Snackbar != null)
		{
			Snackbar.OnUpdate += SnackbarUpdated;
			Snackbar.Init();

			Css = builder =>
			{
				var transitionClass = Snackbar.State.TransitionClass;

				if (!IsNullOrWhiteSpace(transitionClass))
				{
					builder.OpenElement(1, "style");
					builder.AddContent(2, transitionClass);
					builder.CloseElement();
				}
			};
		}
	}

	public void Dispose()
	{
		if (Snackbar != null)
			Snackbar.OnUpdate -= SnackbarUpdated;
	}
}