oqtane.framework/Oqtane.Client/Modules/Controls/RichTextEditor.razor

@namespace Oqtane.Modules.Controls
@inherits ModuleBase
@inject IJSRuntime JSRuntime

@if (filemanagervisible)
{
    <FileManager @ref="filemanager" Filter="@Constants.ImageFiles" />
    @((MarkupString)@message)
    <br />
}
<div class="row justify-content-center">
    <button type="button" class="btn btn-success" @onclick="InsertImage">Insert Image</button>
    @if (filemanagervisible)
    {
        @((MarkupString)"&nbsp;&nbsp;")
        <button type="button" class="btn btn-secondary" @onclick="CloseFileManager">Close</button>
    }
</div>
<br />
<div @ref="@ToolBar">
    @ToolbarContent
</div>
<div @ref="@EditorElement">
</div>

@code {
    [Parameter]
    public RenderFragment ToolbarContent { get; set; }

    [Parameter]
    public bool ReadOnly { get; set; } = false;

    [Parameter]
    public string Placeholder { get; set; } = "Enter Your Content...";

    [Parameter]
    public string Theme { get; set; } = "snow";

    [Parameter]
    public string DebugLevel { get; set; } = "info";

    private ElementReference EditorElement;
    private ElementReference ToolBar;
    bool filemanagervisible = false;
    FileManager filemanager;
    string message = "";

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            await RichTextEditorInterop.CreateEditor(
                JSRuntime,
                EditorElement,
                ToolBar,
                ReadOnly,
                Placeholder,
                Theme,
                DebugLevel);
        }
    }

    public async Task<string> GetText()
    {
        return await RichTextEditorInterop.GetText(
            JSRuntime,
            EditorElement);
    }

    public async Task<string> GetHTML()
    {
        return await RichTextEditorInterop.GetHTML(
            JSRuntime,
            EditorElement);
    }

    public async Task<string> GetContent()
    {
        return await RichTextEditorInterop.GetContent(
            JSRuntime,
            EditorElement);
    }

    public async Task LoadContent(string Content)
    {
        await RichTextEditorInterop.LoadEditorContent(
            JSRuntime,
            EditorElement, Content);
    }

    public async Task EnableEditor(bool mode)
    {
        await RichTextEditorInterop.EnableEditor(
            JSRuntime,
            EditorElement, mode);
    }

    public async Task InsertImage()
    {
        if (filemanagervisible)
        {
            int fileid = filemanager.GetFileId();
            if (fileid != -1)
            {
                await RichTextEditorInterop.InsertImage(
                    JSRuntime,
                    EditorElement, ContentUrl(fileid));
                filemanagervisible = false;
                message = "";
            }
            else
            {
                message = "<br /><div class=\"alert alert-warning\" role=\"alert\">You Must Select An Image To Insert</div>";
            }
        }
        else
        {
            filemanagervisible = true;
            message = "";
        }
        StateHasChanged();
    }

    public async Task CloseFileManager()
    {
        filemanagervisible = false;
        message = "";
        StateHasChanged();
    }

}