Added "copy all blocks" feature

Author: usercode

src/DragonFly.BlockField.Client/Helpers/BlockClipboard.cs

@@ -10,15 +10,18 @@ public static class BlockClipboard
 
     public static bool HasData() => Data != null;
 
-    public static async Task CopyAsync(Block block)
+    public static async Task CopyAsync(IEnumerable<Block> block)
     {
         Data = await BlockFieldSerializer.SerializeBlockAsync(block);
     }
 
     public static async Task PasteAsync(int index, IList<Block> blocks)
     {
-        Block innerBlock = await BlockFieldSerializer.DeserializeBlockAsync(Data);
+        Block[] innerBlock = await BlockFieldSerializer.DeserializeBlockAsync(Data);
 
-        blocks.Insert(index, innerBlock);
+        for (int i = 0; i < innerBlock.Length; i++)
+        {
+            blocks.Insert(index + i, innerBlock[i]);
+        }
     }
 }

src/DragonFly.BlockField.Client/Pages/Blocks/BlocksView.razor

@@ -17,11 +17,9 @@
 {
 	<div class="block-field-view">
         <div style="display: flex;gap:0.25rem">
-            <BSButton Color="BSColor.Light" class="block-field-add-btn" OnClick="e => BlockClipboard.PasteAsync(0, Blocks)" title="Paste" style="flex:0"><i class="fa-solid fa-paste"></i></BSButton>
-            
-		    <BSButton Color="BSColor.Light" class="block-field-add-btn" OnClick="e => OpenModal(0)" title="Insert block" style="flex:1">
-			    <i class="fas fa-plus"></i>
-		    </BSButton>
+            <BSButton Color="BSColor.Light" class="block-field-add-btn" OnClick="e => BlockClipboard.CopyAsync(Blocks)" title="Copy all"><i class="fa-solid fa-copy"></i></BSButton>
+            <BSButton Color="BSColor.Light" class="block-field-add-btn" OnClick="e => BlockClipboard.PasteAsync(0, Blocks)" title="Paste" style="flex:0"><i class="fa-solid fa-paste"></i></BSButton>            
+		    <BSButton Color="BSColor.Light" class="block-field-add-btn" OnClick="e => OpenModal(0)" title="Insert block" style="flex:1"><i class="fas fa-plus"></i></BSButton>
         </div>
 
 		@for (int i = 0; i < Blocks.Count; i++)
@@ -35,7 +33,7 @@
 					<BSButton Color="BSColor.Light" OnClick="e => Blocks.MoveUp(block)" title="Up"><i class="fas fa-arrow-up"></i></BSButton>
                     <BSButton Color="BSColor.Light" OnClick="e => Blocks.MoveDown(block)" title="Down"><i class="fas fa-arrow-down"></i></BSButton>
                     <BSButton Color="BSColor.Light" OnClick="e => Blocks.Remove(block)" title="Remove"><i class="fa-solid fa-times"></i></BSButton>
-                    <BSButton Color="BSColor.Light" OnClick="e => BlockClipboard.CopyAsync(block)" title="Copy"><i class="fa-solid fa-copy"></i></BSButton>
+                    <BSButton Color="BSColor.Light" OnClick="e => BlockClipboard.CopyAsync(new[] { block })" title="Copy"><i class="fa-solid fa-copy"></i></BSButton>
 				</div>
 				<div class="block-field-content">
                     @ComponentManager.CreateComponent(block)

src/DragonFly.BlockField.Core/Json/BlockFieldSerializer.cs

@@ -47,20 +47,25 @@ static BlockFieldSerializer()
     /// </summary>
     private static JsonSerializerOptions Options { get; }
 
-    public static async Task<byte[]> SerializeBlockAsync(Block block)
+    public static async Task<byte[]> SerializeBlockAsync(IEnumerable<Block> blocks)
     {
         MemoryStream jsonStream = new MemoryStream();
 
-        await JsonSerializer.SerializeAsync(jsonStream, block, Options);
+        await JsonSerializer.SerializeAsync(jsonStream, blocks, Options);
 
         return jsonStream.ToArray();
     }
 
-    public static async Task<Block?> DeserializeBlockAsync(byte[] buffer)
+    public static async Task<Block[]> DeserializeBlockAsync(byte[] buffer)
     {
-        Block? block = await JsonSerializer.DeserializeAsync<Block>(new MemoryStream(buffer), Options);
+        Block[]? blocks = await JsonSerializer.DeserializeAsync<Block[]>(new MemoryStream(buffer), Options);
 
-        return block;
+        if (blocks == null)
+        {
+            return Array.Empty<Block>();
+        }
+
+        return blocks;
     }
 
     public static async Task<string?> SerializeAsync(Document document)