Execute part of the script only on click/dropdown open?

[stegmatze]

I'm using a modified version of the Octoprint Script.

It shows the remaining print time in the Header, that's why it is refreshed every minute.
In the dropdown is a preview of the webcam, which is fetched and converted via imagemagick.

I'm wondering if it's possible to only execute the image part (fetch + convert) only when the dropdown is opened, instead of every time the script runs.

[melonamin]

In theory you can write a cleverer plugin, which will have contional blocks depending on the type of refresh trigger. I'm already tracking refresh trigger types in code:

enum PluginRefreshReason {
    case FirstLaunch
    case Schedule
    case MenuAction
    case RefreshAllMenu
    case RefreshAllURLScheme
    case URLScheme
    case Shortcut
    case DebugView
    case NotificationAction
    case PluginSettings
...

I can expose this as an ENV variable and you will be able to have two branches 1) refresh only header 2) refresh everething.

[stegmatze]

An ENV variable would be nice!

[melonamin]

Ok, added #404