move code here

volt/block_view.rb

@@ -0,0 +1,49 @@
+
+require "instruction_view"
+
+class BlockView
+
+  include React::Component
+  required_param :interpreter
+
+  define_state :block => []
+  define_state :block_name => ""
+
+  before_mount do
+    interpreter.register_event(:instruction_changed,  self)
+    update_block
+  end
+
+  def update_block
+    return unless interpreter.instruction
+    block_name! interpreter.block.name
+    codes = interpreter.block.codes.dup
+    slice = codes.index(interpreter.instruction) #- 1
+    codes.shift( slice ) if slice >= 0
+    codes.pop while(codes.length > 4)
+    block! codes
+  end
+
+  def instruction_changed
+    update_block
+  end
+
+  def render
+    return unless block
+    div.block_view do
+      div do
+        h4 { method_name}
+        h4 {"Block: #{block_name}"}
+      end
+      block.each do |code|
+        InstructionView  :interpreter => interpreter , :instruction => code
+      end
+    end
+  end
+
+  def method_name
+    bl = interpreter.block
+    return bl.method if bl.method.is_a? String
+    "#{bl.method.for_class.name}.#{bl.method.name}"
+  end
+end