FabricJS是否用_onDoubleClick双击文本对象？

var canvas = new fabric.Canvas('canvas');

canvas.on('mouse:down', function(options) {
  var target = options.target;
  var currentTime = new Date().getTime();
  
  if (target && target.type === 'text') {
    target.lastClickTime = currentTime;
    target.lastClickPosition = canvas.getPointer(options.e);
  }
});

canvas.on('mouse:up', function(options) {
  var target = options.target;
  var currentTime = new Date().getTime();
  var clickPosition = canvas.getPointer(options.e);
  
  if (target && target.type === 'text' && target.lastClickTime) {
    var timeDiff = currentTime - target.lastClickTime;
    var positionDiff = fabric.util.distanceBetweenPoints(target.lastClickPosition, clickPosition);
    
    if (timeDiff < 300 && positionDiff < 5) {
      // 双击事件触发，执行相应的操作
      console.log('Double click on text object');
      console.log('Text content: ' + target.text);
    }
  }
});