我想在Blazor服务器端应用程序中使用TinyMCE,但是它在页面加载中显示一秒钟,然后消失。我将此归咎于此,StatehasChanged()
因此我编写了一个互操作函数,该函数重新初始化TinyMCE并OnAfterRender()
在页面的中调用。
这是JS互操作函数:
initTinyMce: function (tinyMceID) {
tinymce.init({
selector: 'textarea.tinyMce'
});
return "";
//var editor = tinyMCE.get(tinyMceID);
//if (editor && editor instanceof tinymce.Editor) {
// editor.init();
//}
}
在OnAfterRender
我这样称呼它:
protected override void OnAfterRender() {
base.OnAfterRender();
string a = jsInterop.InitTinyMce("myTinyMce").Result;
}
但是它仍然在显示出来后消失了一秒钟。如何解决这个问题?
我无法模仿它,所以也许您使用的是tinyMce和Blazor的不同版本。我正在使用TinyMce 5.3.1和.Net Core 3.1。我看到您已切换到使用SyncFusion,但也许这个答案将像昨天一样,帮助来这里尝试在Blazor中进行此操作的其他任何人。
我认为最主要的是在您离开时处理该元素,并在进入视图/焦点/加载/等时重新初始化...
这是我昨晚整理的一个组件,应该照顾好所有零件并使其像普通纸一样具有可绑定性 <InputTextArea>
我是Blazor和组件的新手。这是我所做的第二个可绑定表单控件。如果有人对如何更好地发表意见或建议,请编辑或让我知道,我可以进行更新。谢谢!
在_Host.html中的JS块中(我使用的是TinyMCE的本地版本)
<script src="/js/tinymce/tinymce.min.js"></script>
/Shared/Components/Textarea.razor
<textarea id="@Id" @bind-value="Value" @bind-value:event="onchange" />
/Shared/Components/Textarea.razor.cs:
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Forms;
using Microsoft.JSInterop;
namespace Application.Shared.Components
{
public partial class Textarea : ComponentBase, IDisposable
{
[Inject] private IJSRuntime JSRuntime { get; set; }
[Parameter] public RenderFragment ChildContent { get; set; }
[Parameter] public string Value { get; set; }
[Parameter] public EventCallback<string> ValueChanged { get; set; }
[Parameter] public string Id { get; set; } = null;
private DotNetObjectReference<Textarea> _elementRef;
[Parameter] public MenuModeEnum MenuMode { get; set; } = MenuModeEnum.standard;
protected string FieldClass => GivenEditContext?.FieldCssClass(FieldIdentifier) ?? string.Empty;
protected EditContext GivenEditContext { get; set; }
protected FieldIdentifier FieldIdentifier { get; set; }
protected string CurrentValue
{
get => Value;
set
{
var hasChanged = !EqualityComparer<string>.Default.Equals(value, Value);
if (!hasChanged) return;
_ = value;
Value = value;
_ = ValueChanged.InvokeAsync(value);
GivenEditContext?.NotifyFieldChanged(FieldIdentifier);
}
}
protected override async Task OnInitializedAsync()
{
await base.OnInitializedAsync();
this.Id = Id ?? Guid.NewGuid().ToString();
_elementRef = DotNetObjectReference.Create(this);
}
protected override async Task OnAfterRenderAsync(bool firstRender)
{
if (firstRender)
{
await JSRuntime.InvokeVoidAsync("TinyMce.init", Id, Enum.GetName(typeof(MenuModeEnum), MenuMode), _elementRef);
}
}
[JSInvokable("textArea_OnChange")]
public void Change(string value)
{
CurrentValue = value;
}
protected virtual void Dispose(bool disposing)
{
JSRuntime.InvokeVoidAsync("TinyMce.dispose", Id, _elementRef);
}
void IDisposable.Dispose()
{
Dispose(disposing: true);
}
internal void DismissInstance()
{
JSRuntime.InvokeVoidAsync("TinyMce.dispose", Id, _elementRef);
StateHasChanged();
}
}
}
/Shared/Components/Enums/MenuModeEnum.cs:
namespace Application.Shared.Components.Enums
{
public enum MenuModeEnum
{
standard,
minimal,
grouped,
bloated
}
}
/wwwroot/js/site.js:
if (!window.TinyMce) {
window.TinyMce = {};
}
window.TinyMce = {
params : {
standard: {
plugins: 'code codesample link image autolink lists media paste table table spellchecker',
toolbar1: 'undo redo | paste | removeformat styleselect | bold italic | alignleft aligncenter alignright alignjustify | outdent indent | link image media codesample | table | code | spellchecker',
menubar: false,
branding: false,
toolbar_mode: 'floating'
},
minimal: {
toolbar1: 'bold italic underline',
menubar: false,
branding: false,
toolbar_mode: 'floating'
},
grouped: {
plugins: "emoticons hr image link lists charmap table",
toolbar: "formatgroup paragraphgroup insertgroup",
toolbar_groups: {
formatgroup: {
icon: 'format',
tooltip: 'Formatting',
items: 'bold italic underline strikethrough | forecolor backcolor | superscript subscript | removeformat'
},
paragraphgroup: {
icon: 'paragraph',
tooltip: 'Paragraph format',
items: 'h1 h2 h3 | bullist numlist | alignleft aligncenter alignright alignjustify | indent outdent'
},
insertgroup: {
icon: 'plus',
tooltip: 'Insert',
items: 'link image emoticons charmap hr'
}
},
menubar: false,
branding: false
},
bloated: {
plugins: 'code codesample link image autolink lists media paste table table spellchecker',
toolbar1: 'undo redo | styleselect | forecolor | bold italic underline strikethrough | link image media codesample | table | code | spellchecker',
toolbar2: 'h1 h2 h3 | bullist numlist | alignleft aligncenter alignright alignjustify | outdent indent | emoticons charmap hr',
menubar: false,
branding: false,
toolbar_mode: 'floating'
}
},
init: function (id, mode, dotnetHelper) {
var params = window.TinyMce.params[mode];
params.selector = '#' + id;
params.setup = function (editor) {
editor.on('change', function (e) {
console.log($('#' + id).val());
$('#' + id).val(editor.getContent());
$('#' + id).change();
console.log($('#' + id).val());
dotnetHelper.invokeMethodAsync("textArea_OnChange", $('#' + id).val());
});
}
tinymce.init(params);
},
dispose: function (id, dotnetHelper) {
tinymce.remove('#' + id);
}
};
用法:
<Textarea MenuMode="@MenuModeEnum.minimal" @bind-Value="@SomeObject.Comments" />
本文收集自互联网,转载请注明来源。
如有侵权,请联系 [email protected] 删除。
我来说两句