electron app stuck

[ITfanheng]

Hi!

My app just like Task Demo with joint++.

When i change the input content and click the clone, the app will stuck.

Not just clone, some other button will execute stuck.

https://recordit.co/NyjG5OrlpR

Any help will appreciate!😊

[kumilingus]

Hello, this can be caused by storing data under the attributes of the element that are not plain objects. The deepClone method can fall into an infinite loop if two objects are mutual referenced.

For instance, instead of:

const el1 = new dia.Element();
const el2 = new dia.Element();
/* ... */
el1.set('referenceElement', el2);
const refEl = el1.get('referenceElement');

do:

const el1 = new dia.Element();
const el2 = new dia.Element();
/* ... */
el1.set('referenceElementId', el2.id);
const refEl = graph.getCell(el1.get('referenceElementId'))

Is it the case?

[kumilingus]

What is the "view" array?

Note that if there is a cellView stored on the element it will introduce a cycle reference.

const model1 = view2.model

const model2 = view1.paper._views[view2.cid].model;

assert(model1 === model2);

[ITfanheng]

"view" is an object array.

[kumilingus]

This is ok.

What exactly does it mean that the application is stuck? It's not clear to me from the video. Are there any errors in the console?

[ITfanheng]

Hi Roman,

sorry for the late reply.

App is stuck means I can do nothing but exit the app. And there is no error in console.

And i find the problem is this.

I have read the source code, async is false when addTo the graph.

So I override the copy halo, and try to change the async, it works!!

But i don't konw the reason.

[kumilingus]

Note that when we add an element to the graph via Halo we use async: false to ensure the elementView is rendered synchronously and is available and fully rendered for anything that is coming next (e.g measuring the size of the elementView DOMElement).