VLEX/BPM-UI/node_modules/ngx-bootstrap/positioning/esm5/modifiers/shift.js

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
import * as tslib_1 from "tslib";
/**
 * @param {?} data
 * @return {?}
 */
export function shift(data) {
    var _a, _b;
    /** @type {?} */
    var placement = data.placement;
    /** @type {?} */
    var basePlacement = placement.split(' ')[0];
    /** @type {?} */
    var shiftvariation = placement.split(' ')[1];
    if (shiftvariation) {
        var _c = data.offsets, host = _c.host, target = _c.target;
        /** @type {?} */
        var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
        /** @type {?} */
        var side = isVertical ? 'left' : 'top';
        /** @type {?} */
        var measurement = isVertical ? 'width' : 'height';
        /** @type {?} */
        var shiftOffsets = {
            start: (_a = {}, _a[side] = host[side], _a),
            end: (_b = {},
                _b[side] = host[side] + host[measurement] - target[measurement],
                _b)
        };
        data.offsets.target = tslib_1.__assign({}, target, ((/** @type {?} */ (shiftOffsets)))[shiftvariation]);
    }
    return data;
}
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