ornamentum
Version:
Angular Toolkit
78 lines • 6.28 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Injectable } from '@angular/core';
/**
* Global reference service; List all global javascript references here.
*/
export class GlobalRefService {
constructor() {
this.setScrollbarWidth();
}
/**
* Set scrollbar width of current browser environment; Ony set on browser environment to support SSR.
* @return {?}
*/
setScrollbarWidth() {
if (this.scrollbarWidthValue !== undefined) {
return;
}
if (this.isBrowser) {
/** @type {?} */
const outer = document.createElement('div');
outer.style.visibility = 'hidden';
outer.style.width = '100px';
outer.style.msOverflowStyle = 'scrollbar'; // needed for WinJS apps
document.body.appendChild(outer);
/** @type {?} */
const widthNoScroll = outer.offsetWidth;
// force scrollbars
outer.style.overflow = 'scroll';
// add inner div
/** @type {?} */
const inner = document.createElement('div');
inner.style.width = '100%';
outer.appendChild(inner);
/** @type {?} */
const widthWithScroll = inner.offsetWidth;
// remove divs
outer.parentNode.removeChild(outer);
this.scrollbarWidthValue = widthNoScroll - widthWithScroll;
}
}
/**
* Get scrollbar width.
* @return {?} Scroll bar width.
*/
get scrollbarWidth() {
return this.scrollbarWidthValue;
}
/**
* Get window reference.
* @return {?} Window reference.
*/
get window() {
return window;
}
/**
* Is browser environment.
* @return {?} True if current environment is browser.
*/
get isBrowser() {
return typeof window !== 'undefined';
}
}
GlobalRefService.decorators = [
{ type: Injectable }
];
/** @nocollapse */
GlobalRefService.ctorParameters = () => [];
if (false) {
/**
* @type {?}
* @private
*/
GlobalRefService.prototype.scrollbarWidthValue;
}
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