@import '@financial-times/o-private-foundation/main';
@import 'src/scss/variables';

/// @outputs All o-expander CSS, including the expander content area and toggle.
@mixin oExpander() {
	@include oPrivateFoundation();

	// Hide content when aria-hidden is applied.
	.o-expander__content[aria-hidden='true'] {
		display: none;
	}

	// Remove max-height from content when expanded.
	// This must override the user set max-height, so use `!important` to
	// guarantee higher specificity. Users may use the `createCustom` method
	// and totally custom CSS for an expander with different behaviour.
	.o-expander__content--expanded {
		max-height: none !important; //stylelint-disable-line declaration-no-important
	}

	// Hide overflow when collapsed.
	.o-expander__content--collapsed {
		overflow: hidden;
	}

	// Hide collapsible-item within the content expander content when
	// it is collapsed.
	.o-expander__content--collapsed .o-expander__collapsible-item {
		display: none;
	}

	// Style the default expander toggle.
	.o-expander__toggle {
		$font-color: #000000;
		$icon-color: #000000;
		color: $font-color;
		font-weight: normal;
		font-size: 12px;
		margin: 0;
		padding: 0;
		background: none;
		cursor: pointer;
		border: 0;
		text-decoration: none;

		&:hover {
			text-decoration: none;
		}

		&:after {
			@include oPrivateIconsContent('arrow-down', $icon-color, $size: 15);
			content: '';
			padding: 0 3px;
			vertical-align: middle;
		}

		&[aria-expanded='true']:after {
			// Rotate the icon rather than downloading another one
			// I call this the "Matt Hinchliffe manouvre"
			transform: rotate(180deg);
		}
	}

	// Show the toggle when the expander is initialised.
	.o-expander--initialized .o-expander__toggle {
		display: inline-block;
	}

	// Hide the toggle by default, or when the expander is inactive.
	.o-expander__toggle,
	.o-expander--inactive .o-expander__toggle {
		display: none;
	}

	.o-expander__visually-hidden {
		@include oPrivateNormaliseVisuallyHidden;
	}
}

@if ($o-expander-is-silent == false) {
	@include oExpander();

	// Don't output twice
	$o-expander-is-silent: true !global;
}