* @param {!Window} win * @return {?string}
(win)
| 432 | * @return {?string} |
| 433 | */ |
| 434 | function topWindowUrlOrDomain(win) { |
| 435 | const {ancestorOrigins} = win.location; |
| 436 | if (ancestorOrigins) { |
| 437 | const {origin} = win.location; |
| 438 | const topOrigin = ancestorOrigins[ancestorOrigins.length - 1]; |
| 439 | if (origin == topOrigin) { |
| 440 | return win.top.location.hostname; |
| 441 | } |
| 442 | const secondFromTop = secondWindowFromTop(win); |
| 443 | if ( |
| 444 | secondFromTop == win || |
| 445 | origin == ancestorOrigins[ancestorOrigins.length - 2] |
| 446 | ) { |
| 447 | return extractHost(secondFromTop./*OK*/ document.referrer); |
| 448 | } |
| 449 | return extractHost(topOrigin); |
| 450 | } else { |
| 451 | try { |
| 452 | return win.top.location.hostname; |
| 453 | } catch (e) {} |
| 454 | const secondFromTop = secondWindowFromTop(win); |
| 455 | try { |
| 456 | return extractHost(secondFromTop./*OK*/ document.referrer); |
| 457 | } catch (e) {} |
| 458 | return null; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | /** |
| 463 | * @param {!Window} win |
no test coverage detected