ngx-bootstrap
Version:
Native Angular Bootstrap Components
82 lines • 9.09 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import * as tslib_1 from "tslib";
import { getBoundaries } from '../utils';
/**
* @param {?} data
* @return {?}
*/
export function preventOverflow(data) {
// NOTE: DOM access here
// resets the targetOffsets's position so that the document size can be calculated excluding
// the size of the targetOffsets element itself
/** @type {?} */
var transformProp = 'transform';
/** @type {?} */
var targetStyles = data.instance.target.style;
// assignment to help minification
var top = targetStyles.top, left = targetStyles.left, _a = transformProp, transform = targetStyles[_a];
targetStyles.top = '';
targetStyles.left = '';
targetStyles[transformProp] = '';
/** @type {?} */
var boundaries = getBoundaries(data.instance.target, data.instance.host, 0, // padding
'scrollParent', false // positionFixed
);
// NOTE: DOM access here
// restores the original style properties after the offsets have been computed
targetStyles.top = top;
targetStyles.left = left;
targetStyles[transformProp] = transform;
/** @type {?} */
var order = ['left', 'right', 'top', 'bottom'];
/** @type {?} */
var check = {
primary: /**
* @param {?} placement
* @return {?}
*/
function (placement) {
var _a;
/** @type {?} */
var value = ((/** @type {?} */ (data))).offsets.target[placement];
if (((/** @type {?} */ (data))).offsets.target[placement] < boundaries[placement] &&
!false // options.escapeWithReference
) {
value = Math.max(((/** @type {?} */ (data))).offsets.target[placement], boundaries[placement]);
}
return _a = {}, _a[placement] = value, _a;
},
secondary: /**
* @param {?} placement
* @return {?}
*/
function (placement) {
var _a;
/** @type {?} */
var mainSide = placement === 'right' ? 'left' : 'top';
/** @type {?} */
var value = data.offsets.target[mainSide];
if (((/** @type {?} */ (data))).offsets.target[placement] > boundaries[placement] &&
!false // escapeWithReference
) {
value = Math.min(data.offsets.target[mainSide], boundaries[placement] -
(placement === 'right' ? data.offsets.target.width : data.offsets.target.height));
}
return _a = {}, _a[mainSide] = value, _a;
}
};
/** @type {?} */
var side;
order.forEach(function (placement) {
side = ['left', 'top']
.indexOf(placement) !== -1
? 'primary'
: 'secondary';
data.offsets.target = tslib_1.__assign({}, data.offsets.target, ((/** @type {?} */ (check)))[side](placement));
});
return data;
}
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