Carlos Villegas wrote:
I'm trying to use several instances of the xxeclient in the same page
Not directly related but may be useful to know: as of XXEW v1.2, what
works fine is an xxe-app opening another instance of xxe-app in a new
browser tab.
Example: open a DITA map or DocBook assembly, select a topic reference
and click the "Open Topic" or "Open Topic R/O" button found in the toolbar.
See
https://www.xmlmind.com/xmleditor/_web/doc/manual/changes.html#changes__v1.2.0
and I'm seeing "cross talk" between the instances, well, what I mean, some CSS
styles in the first instance change while I open the second instance, and then go back to
what it was, when I delete the second instance.
What I'm trying to do is to have my main editor in the page and open a second instance in an popup dialog box, which is a component I'm using from a 3rd party library, which I think just renders the dialog box over the page using a different zindex. In this second instance I open a different document that uses the same doctype and stylesheet, same XXE configuration, but in read only mode. The purpose is to select an element from this other document as an aid to create a link. The popup doesn't cover the whole page so I can see part of the main editor.
When I do this I see some styles in the main document change, for example, some title elements in my custom schema lose their bold style and larger font size. When I close my popup window, which deletes the second xxeclient instance, things go back to normal. I probably can live with this, but it's a bit confusing for the user, and I don't know if other internal things were also affected and mixed up between the instances.
I tried to put my second instance in a shadowRoot to isolate the styles, but I had several problems, xxeclient's documentView running in the shadowRoot gives errors and it doesn't find node views. I traced some of the issues, for example, _domTree iin DocumentView s initialized to be the global DOM document object which is disconnected from the xxeclient DOM tree when running in the shadowRoot. I did some changes to the xxeclient just to test if it would work, and I got it partially working, enough to see that even in the shadowRoot, my original problem still persists, it still affects styles in the other instance. Probably some styles are applied programmatically globally and requires more effort to completely isolate the styles in the instances. I'm also wrapping the xxeclient in a React component and creating 2 instances of this React component. I don't know if that is also part of the problem, but that just creates two instances of the xxeclient DOM element and the XMLEditor
object.
Any suggestions to have 2 completely separate xxeclient instances in the same page?
No, sorry. We never tested this. Please give us a couple of days to
analyze what happens and we'll get back to you. (We are currently in the
process of releasing XXE v11.)
Another idea is to use an iframe to put the second instance, but iframes are
also tricky especially in terms of security, sometimes they get restricted by
the browser. But I'll give it a try next.
Sorry but we have no experience with iframes.
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