@code3 said in Help Developing in Web Panels:

What event to listen for to know when the web panel is opened?

This fires on panel opening but not closing:

window.addEventListener('resize', () => { console.log("Panel opened..."); });

As long as you don't need to worry about detecting closing as well, then that should work.

There is also this to check out:
https://developer.mozilla.org/en-US/docs/Web/API/Resize_Observer_API

As soon as they stop having web panels wasting resources in the background, this will be useful. Thanks for sharing

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@mib2berlin I think that's a different thing, though I can't be sure... that's Keep syncing/reloading your notes, and is, as far as I know, not dependent on Vivaldi. At least I think so 😛

Here's an example:

BW panel when writing this post:
09dd4121-8d8b-4b16-83cc-fb0f962fb8ef-image.png

If I switch tabs, close and reopen the panel, the BW panel still shows me the same outputs as for the Vivaldi Forums site:
2f7917b6-d49b-4121-9c28-e5ed1d17c564-image.png

I expected to see this, with my google accounts there:
3c301975-97b5-4775-bece-2fe73836b4ee-image.png

The Back/Forward, Refresh and Home Button Box is not skinned anymore with the newest Vivaldi Version.

OK fixed it myself. Here the new addstyle Codeblock:

addStyle([ '#panels .webpanel-stack .webpanel .webpanel-header { background-color: var(--colorBgWebpanel); color: var(--colorFgWebpanel); fill: var(--colorFgWebpanel); }', '#panels .button-toolbar { background-image: none; background-color: var(--colorBgWebpanel); color: var(--colorFgWebpanel); fill: var(--colorFgWebpanel); }', ].join('')) })();

This is an older issue and should be fixed now. If anyone still sees it, please file a new report.

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@aminought No, I don't want a universal web panel, I just want to be able to change the web panel home url to a different page usually on the same domain simply because the new page on the same domain has become more useful to me than the old one. The reason why I'm lazy to create a new web panel is because I have already customised the old web panel for that domain and don't want to have to redo all my customisations.

@neetgpt
Hi, to my knowledge web panels cant reach the Vivaldi password manager.
You have to add your credentials manually but only once, I use some web panels with logins, they stay always logged in.

Cheers, mib

I think improvements have been made in more recent versions. Does it work now? If not, are there any specific sites on which it is broken?

Ha ha, carrying your excellent instructions one tiny step further makes me a champion! I'm glad it worked.