[MainUI] Possibility to clear multiple variables at once

[rgrollfitz]

It would be nice to clear multiple variables at once (e.g. on a button click)
'clearVariable' currently only works with one parameter.

[ghys]

This rang a bell so I had to check and apparently we were on the same page 🙂

openhab-webui/bundles/org.openhab.ui/web/src/components/widgets/system/oh-button.vue

Lines 18 to 23 in 838d79e

	if (this.config.clearVariable) {
	if (Array.isArray(this.config.clearVariable)) {
	this.config.clearVariable.forEach((v) => this.$set(this.context.vars, v, undefined))
	} else if (typeof this.config.clearVariable === 'string') {
	this.$set(this.context.vars, this.config.clearVariable, undefined)
	}

(same for oh-link)

Looks like if you provide an array it should clear all the variables in it! Let me know if it works for you.
Should have been documented in the parameter description though. I'll probably review all of those at some point and will add the info.

[rgrollfitz]

@ghys Works flawlessly :) - Thank you!