| 1 | import { window } from './facade/browser';
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| 2 | export var BsVerions;
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| 3 | (function (BsVerions) {
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| 4 | BsVerions["isBs3"] = "bs3";
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| 5 | BsVerions["isBs4"] = "bs4";
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| 6 | BsVerions["isBs5"] = "bs5";
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| 7 | })(BsVerions || (BsVerions = {}));
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| 8 | let guessedVersion;
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| 9 | function _guessBsVersion() {
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| 10 | if (typeof window.document === 'undefined') {
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| 11 | return 'bs4';
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| 12 | }
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| 13 | const spanEl = window.document.createElement('span');
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| 14 | spanEl.innerText = 'testing bs version';
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| 15 | spanEl.classList.add('d-none');
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| 16 | spanEl.classList.add('visually-hidden');
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| 17 | window.document.head.appendChild(spanEl);
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| 18 | const rect = spanEl.getBoundingClientRect();
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| 19 | const overflowStyle = window.getComputedStyle(spanEl).overflow;
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| 20 | window.document.head.removeChild(spanEl);
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| 21 | if (!rect || (rect && rect.top !== 0)) {
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| 22 | return 'bs3';
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| 23 | }
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| 24 | if (overflowStyle && overflowStyle === 'hidden') {
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| 25 | return 'bs5';
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| 26 | }
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| 27 | return 'bs4';
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| 28 | }
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| 29 | export function setTheme(theme) {
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| 30 | guessedVersion = theme;
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| 31 | }
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| 32 |
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| 33 | export function isBs3() {
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| 34 | if (typeof window === 'undefined') {
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| 35 | return true;
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| 36 | }
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| 37 | if (typeof window.__theme === 'undefined') {
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| 38 | if (guessedVersion) {
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| 39 | return guessedVersion === 'bs3';
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| 40 | }
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| 41 | guessedVersion = _guessBsVersion();
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| 42 | return guessedVersion === 'bs3';
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| 43 | }
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| 44 | return window.__theme === 'bs3';
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| 45 | }
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| 46 | export function isBs4() {
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| 47 | if (isBs3())
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| 48 | return false;
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| 49 | if (guessedVersion)
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| 50 | return guessedVersion === 'bs4';
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| 51 | guessedVersion = _guessBsVersion();
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| 52 | return guessedVersion === 'bs4';
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| 53 | }
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| 54 | export function isBs5() {
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| 55 | if (isBs3() || isBs4())
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| 56 | return false;
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| 57 | if (guessedVersion)
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| 58 | return guessedVersion === 'bs5';
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| 59 | guessedVersion = _guessBsVersion();
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| 60 | return guessedVersion === 'bs5';
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| 61 | }
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| 62 | export function getBsVer() {
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| 63 | return {
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| 64 | isBs3: isBs3(),
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| 65 | isBs4: isBs4(),
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| 66 | isBs5: isBs5()
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| 67 | };
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| 68 | }
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| 69 | export function currentBsVersion() {
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| 70 | const bsVer = getBsVer();
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| 71 | const resVersion = Object.keys(bsVer).find(key => bsVer[key]);
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| 72 | return BsVerions[resVersion];
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| 73 | }
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| 74 | |
| \ | No newline at end of file |