Enterprise-level component library based on Bootstrap and Blazor
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Block

Depending on the parameter conditions, the contents of the block are determined to be displayed, usually in conjunction with permission authorization

Determines whether component content is displayed by setting the OnQueryCondition callback method return value

Demo
我是组件内容

By setting authorized NotAuthorized you can set what appears when you meet and do not meet the criteria, respectively

Demo
I am the component content that displayed in accordancewith the criteria

This example simulates a user logging in to control whether the content Block is displayed, which is easier to use than AuthorizeView

Demo
I am the contents of the AuthorizeView component and are not currently logged in

By setting Users controls the display, which is displayed when the currently logged-in user is a preset user

Demo

By setting Roles controls the display, which is displayed when the currently logged-in user is in a preset role

Demo

Attributes

Loading...
@page "/blocks"
@inject IStringLocalizer<Blocks> Localizer

<h3>Block</h3>

<h4>Depending on the parameter conditions, the contents of the block are determined to be displayed, usually in conjunction with permission authorization</h4>

<DemoBlock Title="Common usage" Introduction="Determines whether component content is displayed by setting the <code>OnQueryCondition</code> callback method return value" Name="Normal">
    <div class="mb-3" style="height: 21px;">
        <Block OnQueryCondition="OnQueryCondition" Name="Normal">
            <div>我是组件内容</div>
        </Block>
    </div>
    <Button Icon="@GetIcon()" Text="@GetText()" OnClick="ToggleCondition" />
</DemoBlock>

<DemoBlock Title="Template" Introduction="By setting <code>authorized</code> <code>NotAuthorized</code> you can set what appears when you meet and do not meet the criteria, respectively" Name="Template">
    <div class="mb-3" style="height: 21px;">
        <Block OnQueryCondition="OnQueryCondition2" Name="Template">
            <Authorized>
                <div>I am the component content that  displayed in <b>accordance</b>with the criteria</div>
            </Authorized>
            <NotAuthorized>
                <div>I am the component content that  displayed that <b>not accordance</b>the  criteria</div>
            </NotAuthorized>
        </Block>
    </div>
    <Button Icon="@GetIcon2()" Text="@GetText2()" OnClick="ToggleCondition2" />
</DemoBlock>

<DemoBlock Title="Judging by permissions" Introduction="This example simulates a user logging in to control whether the content <code>Block</code> is displayed, which is easier to use than <code>AuthorizeView</code>" Name="Authorizate">
    <div class="mb-3" style="height: 21px;">
        <Block OnQueryCondition="OnQueryUser" Name="Authorized">
            <div>@((MarkupString)Localizer["AuthorizateDiv1",UserName].Value)</div>
        </Block>
    </div>
    <Microsoft.AspNetCore.Components.Authorization.CascadingAuthenticationState>
        <Microsoft.AspNetCore.Components.Authorization.AuthorizeView>
            <Authorized>
                <div>@((MarkupString)Localizer["AuthorizateDiv2",context.User.Identity?.Name!].Value)</div>
            </Authorized>
            <NotAuthorized>
                <div>I am the contents of the <code>AuthorizeView</code> component and are not currently logged in</div>
            </NotAuthorized>
        </Microsoft.AspNetCore.Components.Authorization.AuthorizeView>
    </Microsoft.AspNetCore.Components.Authorization.CascadingAuthenticationState>
    <Button Icon="@GetUser()" Text="@GetUserText()" OnClick="ToggleAuthor" class="mt-3" />
</DemoBlock>

<DemoBlock Title="Pre-set the user" Introduction="By setting <code>Users</code> controls the display, which is displayed when the currently logged-in user is a preset user" Name="Users">
    <div style="height: 21px;">
        <Block Users="@Users">
            <div>@((MarkupString)Localizer["UsersDiv1",UserName].Value  )</div>
        </Block>
    </div>
    <Button Icon="@GetUser()" Text="@GetUserText()" OnClick="ToggleAuthor" class="mt-3" />
</DemoBlock>

<DemoBlock Title="Preset roles" Introduction="By setting <code>Roles</code> controls the display, which is displayed when the currently logged-in user is in a preset role" Name="Roles">
    <div style="height: 21px;">
        <Block Roles="@Roles">
            <div>The current role <code>User</code> allow this content to be seen</div>
        </Block>
    </div>
    <Button Icon="@GetUser()" Text="@GetUserText()" OnClick="ToggleAuthor" class="mt-3" />
</DemoBlock>

<Tips class="mt-3">
    <p>By setting different <code>Name</code> as a resource, combined with the authorization system to authorize this resource can be achieved to any element of the Web page permission control</p>
</Tips>

<AttributeTable Items="@GetAttributes()" />
// Copyright (c) Argo Zhang (argo@163.com). All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
// Website: https://www.blazor.zone or https://argozhang.github.io/

using BootstrapBlazor.Components;
using BootstrapBlazor.Shared.Common;
using BootstrapBlazor.Shared.Services;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Authorization;

namespace BootstrapBlazor.Shared.Samples;

/// <summary>
/// 
/// </summary>
public partial class Blocks
{
    private bool IsShow { get; set; } = true;

    private void ToggleCondition() => IsShow = !IsShow;

    private string GetIcon() => IsShow ? "fa fa-eye-slash" : "fa fa-eye";

    private string GetText() => IsShow ? Localizer["IsHide"] : Localizer["IsShow"];

    private Task<bool> OnQueryCondition(string name) => Task.FromResult(IsShow);

    #region 示例二
    private bool IsShow2 { get; set; } = true;

    private void ToggleCondition2() => IsShow2 = !IsShow2;

    private string GetIcon2() => IsShow2 ? "fa fa-eye-slash" : "fa fa-eye";

    private string GetText2() => IsShow2 ? Localizer["IsHide"] : Localizer["IsShow"];

    private Task<bool> OnQueryCondition2(string name) => Task.FromResult(IsShow2);
    #endregion

    #region 示例三
    [Inject]
    [NotNull]
    private AuthenticationStateProvider? AuthenticationStateProvider { get; set; }

    private bool IsAuth { get; set; }

    [NotNull]
    private string? UserName { get; set; }

    private async Task ToggleAuthor()
    {
        if (AuthenticationStateProvider is MockAuthenticationStateProvider mock)
        {
            if (!IsAuth)
            {
                mock.Login();
                var state = await mock.GetAuthenticationStateAsync();
                UserName = state.User.Identity?.Name;
                IsAuth = state.User.Identity?.IsAuthenticated ?? false;
            }
            else
            {
                mock.Logout();
                IsAuth = false;
                UserName = "";
            }
        }
    }

    private IEnumerable<string> Users { get; } = new string[] { "BootstrapBlazor" };

    private IEnumerable<string> Roles { get; } = new string[] { "User" };

    private string GetUser() => IsAuth ? "fa fa-user-secret" : "fa fa-user";

    private string GetUserText() => IsAuth ? Localizer["Logout"] : Localizer["Login"];

    private Task<bool> OnQueryUser(string name) => Task.FromResult(IsAuth);
    #endregion

    private IEnumerable<AttributeItem> GetAttributes() => new AttributeItem[]
    {
        new AttributeItem()
        {
            Name = nameof(Block.OnQueryCondition),
            Description = Localizer["OnQueryCondition"],
            Type = "Func<Task<bool>>",
            ValueList = " — ",
            DefaultValue = "true"
        },
        new AttributeItem()
        {
            Name = nameof(Block.ChildContent),
            Description = Localizer["ChildContent"],
            Type = "RenderFragment",
            ValueList = " — ",
            DefaultValue = " — "
        },
        new AttributeItem()
        {
            Name = nameof(Block.Authorized),
            Description = Localizer["Authorized"],
            Type = "RenderFragment",
            ValueList = " — ",
            DefaultValue = " — "
        },
        new AttributeItem()
        {
            Name = nameof(Block.NotAuthorized),
            Description = Localizer["NotAuthorized"],
            Type = "RenderFragment",
            ValueList = " — ",
            DefaultValue = " — "
        }
    };
}

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