element Halo boxContent question

[james-ep01]

Introduction

My element's objects show the appropriate property options in boxContent.
There are elements that do not have the property, so they return blank or null, and the screen displays a blank space with the theme color.

1. 1. Display appropriate properties for each element
      

2. Show boxContent even when there is no property and boxContent is null or blank
   

My halo boxContent is as follows.

boxContent: function boxContent(cellView, boxDOMElement){
var content = App.config.utils.getCellBoxHtml(cellView);
return content;
},

How can I make it not show on the screen when boxContent is null or blank?

Steps to reproduce

No response

Restrictions & Constraints

No response

Does your question relate to JointJS or JointJS+. Select both if applicable.

JointJS+

[kumilingus]

Currently, setting false (a boolean) is the only way to hide the Halo info box. If a callback is used for the boxContent option, the info box remains visible at all times.

[james-ep01]

Thank you.

It shouldn't be visible, but it keeps showing up on the screen and I wanted to get rid of it by selecting it. It kept showing up, so I ended up getting rid of it in a box style.

[kumilingus]

I am not sure I follow, but this what you should do:

const isVisible = condition === true;
new ui.Halo({
    /* ... */
    boxContent: isVisible ? (() => 'hello!') : false;
})

[james-ep01]

Thank you, it works well.

And v4.1 halo has Group feature and customize handle feature which is much more useful than the old pie way.

[james-ep01]

It does become invisible, but another problem arises.
When I change the inspector, the contents of the object's box do not change. Haha...
I think that if I use variables or values ​​outside the halo object, they do not render in the box.
I guess I should just get rid of them with style.

[kumilingus]

Could you provide an example?