copy

//in _updateContextMenu
this.menuitemCopyPropertyValue = false;
this.menuitemCopyPropertyName = false;
this.menuitemCopyDeclaration = false;
this.menuitemCopySelector = false;

this._clickedNodeInfo = this_.getNodeInfo(event.target);

if(clickedNodeInfo.type == 1) {
  //selector type
  this.menuitemCopySelector = true;
}
else if(clickedNodeInfo.type == 2) {

  this.menuitemCopyPropertyName = true;
  this.menuitemCopyDeclaration = true;
}