discourse/app/assets/javascripts/select-kit/addon/components/combo-box/combo-box-header.js

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import { and, reads } from "@ember/object/computed";
import SingleSelectHeaderComponent from "select-kit/components/select-kit/single-select-header";
import { computed } from "@ember/object";
export default SingleSelectHeaderComponent.extend({
classNames: ["combo-box-header"],
clearable: reads("selectKit.options.clearable"),
caretUpIcon: reads("selectKit.options.caretUpIcon"),
caretDownIcon: reads("selectKit.options.caretDownIcon"),
shouldDisplayClearableButton: and("clearable", "value"),
caretIcon: computed(
"selectKit.isExpanded",
"caretUpIcon",
"caretDownIcon",
function () {
return this.selectKit.isExpanded ? this.caretUpIcon : this.caretDownIcon;
}
),
});