* Sets the appropriate positions on a position strategy * so the overlay connects with the trigger correctly. * @param positionStrategy Strategy whose position to update.
(menu: MatMenuPanel, positionStrategy: FlexibleConnectedPositionStrategy)
| 401 | * @param positionStrategy Strategy whose position to update. |
| 402 | */ |
| 403 | private _setPosition(menu: MatMenuPanel, positionStrategy: FlexibleConnectedPositionStrategy) { |
| 404 | let [originX, originFallbackX]: HorizontalConnectionPos[] = |
| 405 | menu.xPosition === 'before' ? ['end', 'start'] : ['start', 'end']; |
| 406 | |
| 407 | let [overlayY, overlayFallbackY]: VerticalConnectionPos[] = |
| 408 | menu.yPosition === 'above' ? ['bottom', 'top'] : ['top', 'bottom']; |
| 409 | |
| 410 | let [originY, originFallbackY] = [overlayY, overlayFallbackY]; |
| 411 | let [overlayX, overlayFallbackX] = [originX, originFallbackX]; |
| 412 | let offsetY = 0; |
| 413 | |
| 414 | if (this._triggersSubmenu()) { |
| 415 | // When the menu is a sub-menu, it should always align itself |
| 416 | // to the edges of the trigger, instead of overlapping it. |
| 417 | overlayFallbackX = originX = menu.xPosition === 'before' ? 'start' : 'end'; |
| 418 | originFallbackX = overlayX = originX === 'end' ? 'start' : 'end'; |
| 419 | |
| 420 | if (this._parentMaterialMenu) { |
| 421 | if (this._parentInnerPadding == null) { |
| 422 | const firstItem = this._parentMaterialMenu.items.first; |
| 423 | this._parentInnerPadding = firstItem ? firstItem._getHostElement().offsetTop : 0; |
| 424 | } |
| 425 | |
| 426 | offsetY = overlayY === 'bottom' ? this._parentInnerPadding : -this._parentInnerPadding; |
| 427 | } |
| 428 | } else if (!menu.overlapTrigger) { |
| 429 | originY = overlayY === 'top' ? 'bottom' : 'top'; |
| 430 | originFallbackY = overlayFallbackY === 'top' ? 'bottom' : 'top'; |
| 431 | } |
| 432 | |
| 433 | positionStrategy.withPositions([ |
| 434 | {originX, originY, overlayX, overlayY, offsetY}, |
| 435 | {originX: originFallbackX, originY, overlayX: overlayFallbackX, overlayY, offsetY}, |
| 436 | { |
| 437 | originX, |
| 438 | originY: originFallbackY, |
| 439 | overlayX, |
| 440 | overlayY: overlayFallbackY, |
| 441 | offsetY: -offsetY, |
| 442 | }, |
| 443 | { |
| 444 | originX: originFallbackX, |
| 445 | originY: originFallbackY, |
| 446 | overlayX: overlayFallbackX, |
| 447 | overlayY: overlayFallbackY, |
| 448 | offsetY: -offsetY, |
| 449 | }, |
| 450 | ]); |
| 451 | } |
| 452 | |
| 453 | /** Returns a stream that emits whenever an action that should close the menu occurs. */ |
| 454 | private _menuClosingActions() { |
nothing calls this directly
no test coverage detected