OwlCyberSecurity - MANAGER

Edit File: preventOverflow.js.flow

// @flow
import { top, left, right, bottom, start } from '../enums';
import type { Placement, Boundary, RootBoundary } from '../enums';
import type { Rect, ModifierArguments, Modifier, Padding } from '../types';
import getBasePlacement from '../utils/getBasePlacement';
import getMainAxisFromPlacement from '../utils/getMainAxisFromPlacement';
import getAltAxis from '../utils/getAltAxis';
import { within, withinMaxClamp } from '../utils/within';
import getLayoutRect from '../dom-utils/getLayoutRect';
import getOffsetParent from '../dom-utils/getOffsetParent';
import detectOverflow from '../utils/detectOverflow';
import getVariation from '../utils/getVariation';
import getFreshSideObject from '../utils/getFreshSideObject';
import { min as mathMin, max as mathMax } from '../utils/math';

type TetherOffset =
  | (({
      popper: Rect,
      reference: Rect,
      placement: Placement,
    }) => number | { mainAxis: number, altAxis: number })
  | number
  | { mainAxis: number, altAxis: number };

// eslint-disable-next-line import/no-unused-modules
export type Options = {
  /* Prevents boundaries overflow on the main axis */
  mainAxis: boolean,
  /* Prevents boundaries overflow on the alternate axis */
  altAxis: boolean,
  /* The area to check the popper is overflowing in */
  boundary: Boundary,
  /* If the popper is not overflowing the main area, fallback to this one */
  rootBoundary: RootBoundary,
  /* Use the reference's "clippingParents" boundary context */
  altBoundary: boolean,
  /**
   * Allows the popper to overflow from its boundaries to keep it near its
   * reference element
   */
  tether: boolean,
  /* Offsets when the `tether` option should activate */
  tetherOffset: TetherOffset,
  /* Sets a padding to the provided boundary */
  padding: Padding,
};

function preventOverflow({ state, options, name }: ModifierArguments<Options>) {
  const {
    mainAxis: checkMainAxis = true,
    altAxis: checkAltAxis = false,
    boundary,
    rootBoundary,
    altBoundary,
    padding,
    tether = true,
    tetherOffset = 0,
  } = options;

const data = { x: 0, y: 0 };

if (!popperOffsets) {
    return;
  }

if (checkMainAxis) {
    const mainSide = mainAxis === 'y' ? top : left;
    const altSide = mainAxis === 'y' ? bottom : right;
    const len = mainAxis === 'y' ? 'height' : 'width';
    const offset = popperOffsets[mainAxis];

const min = offset + overflow[mainSide];
    const max = offset - overflow[altSide];

const additive = tether ? -popperRect[len] / 2 : 0;

const minLen = variation === start ? referenceRect[len] : popperRect[len];
    const maxLen = variation === start ? -popperRect[len] : -referenceRect[len];

// We need to include the arrow in the calculation so the arrow doesn't go
    // outside the reference bounds
    const arrowElement = state.elements.arrow;
    const arrowRect =
      tether && arrowElement
        ? getLayoutRect(arrowElement)
        : { width: 0, height: 0 };
    const arrowPaddingObject = state.modifiersData['arrow#persistent']
      ? state.modifiersData['arrow#persistent'].padding
      : getFreshSideObject();
    const arrowPaddingMin = arrowPaddingObject[mainSide];
    const arrowPaddingMax = arrowPaddingObject[altSide];

// If the reference length is smaller than the arrow length, we don't want
    // to include its full size in the calculation. If the reference is small
    // and near the edge of a boundary, the popper can overflow even if the
    // reference is not overflowing as well (e.g. virtual elements with no
    // width or height)
    const arrowLen = within(0, referenceRect[len], arrowRect[len]);

const minOffset = isBasePlacement
      ? referenceRect[len] / 2 -
        additive -
        arrowLen -
        arrowPaddingMin -
        normalizedTetherOffsetValue.mainAxis
      : minLen -
        arrowLen -
        arrowPaddingMin -
        normalizedTetherOffsetValue.mainAxis;
    const maxOffset = isBasePlacement
      ? -referenceRect[len] / 2 +
        additive +
        arrowLen +
        arrowPaddingMax +
        normalizedTetherOffsetValue.mainAxis
      : maxLen +
        arrowLen +
        arrowPaddingMax +
        normalizedTetherOffsetValue.mainAxis;

const arrowOffsetParent =
      state.elements.arrow && getOffsetParent(state.elements.arrow);
    const clientOffset = arrowOffsetParent
      ? mainAxis === 'y'
        ? arrowOffsetParent.clientTop || 0
        : arrowOffsetParent.clientLeft || 0
      : 0;

const offsetModifierValue = offsetModifierState?.[mainAxis] ?? 0;
    const tetherMin = offset + minOffset - offsetModifierValue - clientOffset;
    const tetherMax = offset + maxOffset - offsetModifierValue;

const preventedOffset = within(
      tether ? mathMin(min, tetherMin) : min,
      offset,
      tether ? mathMax(max, tetherMax) : max
    );

popperOffsets[mainAxis] = preventedOffset;
    data[mainAxis] = preventedOffset - offset;
  }

if (checkAltAxis) {
    const mainSide = mainAxis === 'x' ? top : left;
    const altSide = mainAxis === 'x' ? bottom : right;
    const offset = popperOffsets[altAxis];

const len = altAxis === 'y' ? 'height' : 'width';

const min = offset + overflow[mainSide];
    const max = offset - overflow[altSide];

const isOriginSide = [top, left].indexOf(basePlacement) !== -1;

const offsetModifierValue = offsetModifierState?.[altAxis] ?? 0;
    const tetherMin = isOriginSide
      ? min
      : offset -
        referenceRect[len] -
        popperRect[len] -
        offsetModifierValue +
        normalizedTetherOffsetValue.altAxis;
    const tetherMax = isOriginSide
      ? offset +
        referenceRect[len] +
        popperRect[len] -
        offsetModifierValue -
        normalizedTetherOffsetValue.altAxis
      : max;

const preventedOffset =
      tether && isOriginSide
        ? withinMaxClamp(tetherMin, offset, tetherMax)
        : within(tether ? tetherMin : min, offset, tether ? tetherMax : max);

popperOffsets[altAxis] = preventedOffset;
    data[altAxis] = preventedOffset - offset;
  }

state.modifiersData[name] = data;
}

// eslint-disable-next-line import/no-unused-modules
export type PreventOverflowModifier = Modifier<'preventOverflow', Options>;
export default ({
  name: 'preventOverflow',
  enabled: true,
  phase: 'main',
  fn: preventOverflow,
  requiresIfExists: ['offset'],
}: PreventOverflowModifier);