MinervaNeue/components/ToggleList/ToggleList.mustache
Stephen Niedzielski edb4385345 Hygiene: extract ToggleList to a reusable component
A list that toggles visibility via the checkbox hack is needed in at
least two spots: the page actions overflow menu and the user menu. This
patch makes several refactors to turn what was previously hardcoded into
page actions a reusable component:

- Start a new components directory. Components are reusable and
  composable. The subdirectories are organized by function, not
  ResourceLoader module bundling which greatly improves the ability to
  see a component's full functionality in one directory instead of
  examining the entire codebase. See updates to README.

- Extract pageactions.less into:
  - ToggleList.less: LESS for any checkbox hack list.
  - DropDownList.less: LESS for lists that open downwards.
  - MenuListItem.less: LESS for list items of menus.
  The division makes it easier to see concerns, dependencies, and change
  code.

- Move pageActionMenu.mustache to a component and extract ToggleList
  template.

- Extract ToggleList.js from Toolbar.js.

Bug: T214540
Change-Id: I171831469a6733c458bc5c7ba249a5096ca975b8
2019-07-04 13:48:13 -06:00

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{{!
A list with visibility toggled by a checkbox.
string|null class Optional CSS class for the root element.
string checkboxID CSS identifier unique to the page needed to connect label and input.
string|null toggleID Optional toggle button CSS identifier to connect label and toggle aria.
string|null toggleClass Optional toggle button CSS class.
string|null listClass Optional list CSS class.
string|null text Optional text and aria label for the toggle button.
array|null items Optional array of drop down list items for the unordered list.
}}
<div class="toggle-list {{class}}">
<input
type="checkbox"
id="{{checkboxID}}"
class="toggle-list__checkbox"
role="button"
aria-labelledby="{{toggleID}}"
aria-expanded="false">
<label id="{{toggleID}}" class="toggle-list__toggle {{toggleClass}}" for="{{checkboxID}}">
{{text}}
</label>
<ul class="toggle-list__list {{listClass}}">
{{#items}}
{{> ToggleList/ToggleListItem}}
{{/items}}
</ul>
</div>