this.handleContextMenu($event)"
v-show="source.visible"
:class="{
'is-expanded': expanded,
'is-current': source.isCurrent,
'is-hidden': !source.visible,
'is-focusable': !source.disabled,
'is-checked': !source.disabled && source.checked
}"
role="treeitem"
tabindex="-1"
:aria-expanded="expanded"
:aria-disabled="source.disabled"
:aria-checked="source.checked"
ref="node"
>