在代碼中創建塊到塊的連接

Question

我已經實現了一個上下文菜單處理程序，它將一個塊添加到工作區中。我正在嘗試將塊添加到調用上下文菜單的塊和可能已經連接到它的任何塊（previousConnection）之間。我正在拍攝的和代碼我有和它做什麼...

context menu option handler: 
    var option = 
    { 
     text: "Comment", 
     enabled: true, 
     callback: function() 
     { 
     var comment = workspace.newBlock('ta_comment'); 
     var block = Blockly.ContextMenu.currentBlock; 

     block.previousConnection.connect(comment.nextConnection); 

     comment.initSvg(); 
     comment.render(); 
     } 
    } 

    menuOptions.push(option); 

before after

Answer 1

 //create comment block and get the block that summoned the context menu 
    var comment = workspace.newBlock('ta_comment'); 
    var block = Blockly.ContextMenu.currentBlock; 

    //connect up comment block 
    comment.previousConnection.connect(block.previousConnection.targetConnection); 
    comment.nextConnection.connect(block.previousConnection); 

    //init 
    comment.initSvg(); 

    //render updated workspace 
    workspace.render();