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// @flow
import type {
ModifierArguments,
Modifier,
Rect,
SideObject,
Offsets,
} from '../types';
import { top, bottom, left, right } from '../enums';
import detectOverflow from '../utils/detectOverflow';
function getSideOffsets(
overflow: SideObject,
rect: Rect,
preventedOffsets: Offsets = { x: 0, y: 0 }
): SideObject {
return {
top: overflow.top - rect.height - preventedOffsets.y,
right: overflow.right - rect.width + preventedOffsets.x,
bottom: overflow.bottom - rect.height + preventedOffsets.y,
left: overflow.left - rect.width - preventedOffsets.x,
};
}
function isAnySideFullyClipped(overflow: SideObject): boolean {
return [top, right, bottom, left].some((side) => overflow[side] >= 0);
}
function hide({ state, name }: ModifierArguments<{||}>) {
const referenceRect = state.rects.reference;
const popperRect = state.rects.popper;
const preventedOffsets = state.modifiersData.preventOverflow;
const referenceOverflow = detectOverflow(state, {
elementContext: 'reference',
});
const popperAltOverflow = detectOverflow(state, {
altBoundary: true,
});
const referenceClippingOffsets = getSideOffsets(
referenceOverflow,
referenceRect
);
const popperEscapeOffsets = getSideOffsets(
popperAltOverflow,
popperRect,
preventedOffsets
);
const isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);
const hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);
state.modifiersData[name] = {
referenceClippingOffsets,
popperEscapeOffsets,
isReferenceHidden,
hasPopperEscaped,
};
state.attributes.popper = {
...state.attributes.popper,
'data-popper-reference-hidden': isReferenceHidden,
'data-popper-escaped': hasPopperEscaped,
};
}
// eslint-disable-next-line import/no-unused-modules
export type HideModifier = Modifier<'hide', {||}>;
export default ({
name: 'hide',
enabled: true,
phase: 'main',
requiresIfExists: ['preventOverflow'],
fn: hide,
}: HideModifier);
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