feat(Editor): add return value on file upload callback (#534)

* feat: 上传回调方法增加返回值

* chore: bump version 9.0.6

Author: ArgoZhang

src/components/BootstrapBlazor.SummerNote/BootstrapBlazor.SummerNote.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.0.5</Version>
+    <Version>9.0.6</Version>
   </PropertyGroup>
 
   <PropertyGroup>

src/components/BootstrapBlazor.SummerNote/Components/Editor/Editor.razor.cs

@@ -64,7 +64,7 @@ public partial class Editor
     /// 获得/设置 Editor 组件内上传文件时回调此方法
     /// </summary>
     [Parameter]
-    public Func<EditorUploadFile, Task>? OnFileUpload { get; set; }
+    public Func<EditorUploadFile, Task<string>>? OnFileUpload { get; set; }
 
     private bool _lastShowSubmit = true;
 
@@ -270,14 +270,16 @@ public async Task<string> ClickPluginItem(string pluginItemName)
     /// <param name="size"></param>
     /// <param name="stream"></param>
     [JSInvokable]
-    public async Task ImageUpload(string name, string contentType, long size, IJSStreamReference stream)
+    public async Task<string> ImageUpload(string name, string contentType, long size, IJSStreamReference stream)
     {
-        var data = await stream.OpenReadStreamAsync(size);
+        string? ret = null;
+        await using var data = await stream.OpenReadStreamAsync(size);
         var file = new EditorUploadFile(name, contentType, size, data);
         if (OnFileUpload != null)
         {
-            await OnFileUpload(file);
+            ret = await OnFileUpload(file);
         }
+        return ret ?? "";
     }
 
     /// <summary>

src/components/BootstrapBlazor.SummerNote/Components/Editor/Editor.razor.js

@@ -51,17 +51,16 @@ export async function init(id, invoker, methodGetPluginAttrs, methodClickPluginI
                     editor.files = files
                     for (let i = 0; i < files.length; i++) {
                         const file = files[i];
-                        const image = createImage(file);
-                        editor.$editor.summernote('insertNode', image);
-
                         const buffer = await file.arrayBuffer();
                         const stream = DotNet.createJSStreamReference(buffer);
-                        await editor.invoker.invokeMethodAsync('ImageUpload',
+                        const url = await editor.invoker.invokeMethodAsync('ImageUpload',
                             file.name,
                             file.type || 'application/octet-stream',
                             file.size,
                             stream
                         )
+                        const image = createImage(file, url);
+                        editor.$editor.summernote('insertNode', image);
                     }
                 }
             }
@@ -220,9 +219,9 @@ export function dispose(id) {
     }
 }
 
-const createImage = file => {
+const createImage = (file, url) => {
     const element = document.createElement('img');
-    element.src = URL.createObjectURL(file);
+    element.src = url || URL.createObjectURL(file);
     return element;
 }