Folder names with spaces cause full page reload when clicked

[maniaba]

Description

I noticed a problem when using the app with mail folders that contain spaces in their names.

Steps to reproduce

1. Create a new mail folder (for example: Test Folder).
2. Open the Roundcube integration inside Nextcloud.
3. Click on the folder with a space in its name.

Expected behavior

The messages inside the selected folder should load without refreshing the entire page.

Actual behavior

When clicking on a folder that has a space in its name, the whole Nextcloud page refreshes.
This does not happen with folders that have names without spaces.

Environment

• Nextcloud version: Nextcloud Hub 10 (31.0.9)
• Roundcube version: 1.6.11
• nextcloud-roundcube app version: 1.2.1
• Browser: Google Chrome Version 140.0.7339.208 (Official Build) (64-bit)
• OS: Windows 11

Additional notes

It seems like the space in the folder name is not being handled correctly when generating the link or request, which causes a full reload instead of just switching folders inside the iframe/app.

[rotdrop]

Think I found it. The wrapper code tries to follow the internal changes of the wrapped RC instance. For this it is necessary to not trigger a completet iframe reload if nothing has changed. This decision is based on the RC query string. It appears that "With Space" is at one place encoded with a plus sign instead of %20 so there is a mismatch between "With+Space" and "With%20Space". The source of the problem is the use of URLSearchParams which encodes spaces as plus signs.

[rotdrop]

Probably fixed by 163a4e0