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* @copyright Valor Software\n * @copyright Angular ng-bootstrap team\n */\n\n// previous version:\n// https://github.com/angular-ui/bootstrap/blob/07c31d0731f7cb068a1932b8e01d2312b796b4ec/src/position/position.js\n// tslint:disable\nexport class Positioning {\n public position(element: HTMLElement, round = true): ClientRect {\n let elPosition: ClientRect;\n let parentOffset: ClientRect = {width: 0, height: 0, top: 0, bottom: 0, left: 0, right: 0};\n\n if (this.getStyle(element, 'position') === 'fixed') {\n elPosition = element.getBoundingClientRect();\n } else {\n const offsetParentEl = this.offsetParent(element);\n\n elPosition = this.offset(element, false);\n\n if (offsetParentEl !== document.documentElement) {\n parentOffset = this.offset(offsetParentEl, false);\n }\n\n parentOffset.top += offsetParentEl.clientTop;\n parentOffset.left += offsetParentEl.clientLeft;\n }\n\n elPosition.top -= parentOffset.top;\n elPosition.bottom -= parentOffset.top;\n elPosition.left -= parentOffset.left;\n elPosition.right -= parentOffset.left;\n\n if (round) {\n elPosition.top = Math.round(elPosition.top);\n elPosition.bottom = Math.round(elPosition.bottom);\n elPosition.left = Math.round(elPosition.left);\n elPosition.right = Math.round(elPosition.right);\n }\n\n return elPosition;\n }\n\n public offset(element: HTMLElement, round = true): ClientRect {\n const elBcr = element.getBoundingClientRect();\n const viewportOffset = {\n top: window.pageYOffset - document.documentElement.clientTop,\n left: window.pageXOffset - document.documentElement.clientLeft\n };\n\n let elOffset = {\n height: elBcr.height || element.offsetHeight,\n width: elBcr.width || element.offsetWidth,\n top: elBcr.top + viewportOffset.top,\n bottom: elBcr.bottom + viewportOffset.top,\n left: elBcr.left + viewportOffset.left,\n right: elBcr.right + viewportOffset.left\n };\n\n if (round) {\n elOffset.height = Math.round(elOffset.height);\n elOffset.width = Math.round(elOffset.width);\n elOffset.top = Math.round(elOffset.top);\n elOffset.bottom = Math.round(elOffset.bottom);\n elOffset.left = Math.round(elOffset.left);\n elOffset.right = Math.round(elOffset.right);\n }\n\n return elOffset;\n }\n\n public positionElements(hostElement: HTMLElement, targetElement: HTMLElement, placement: string, appendToBody?: boolean):\n ClientRect {\n const hostElPosition = appendToBody ? this.offset(hostElement, false) : this.position(hostElement, false);\n const shiftWidth: any = {\n left: hostElPosition.left,\n center: hostElPosition.left + hostElPosition.width / 2 - targetElement.offsetWidth / 2,\n right: hostElPosition.left + hostElPosition.width\n };\n const shiftHeight: any = {\n top: hostElPosition.top,\n center: hostElPosition.top + hostElPosition.height / 2 - targetElement.offsetHeight / 2,\n bottom: hostElPosition.top + hostElPosition.height\n };\n const targetElBCR = targetElement.getBoundingClientRect();\n const placementPrimary = placement.split(' ')[0] || 'top';\n const placementSecondary = placement.split(' ')[1] || 'center';\n\n let targetElPosition: ClientRect = {\n height: targetElBCR.height || targetElement.offsetHeight,\n width: targetElBCR.width || targetElement.offsetWidth,\n top: 0,\n bottom: targetElBCR.height || targetElement.offsetHeight,\n left: 0,\n right: targetElBCR.width || targetElement.offsetWidth\n };\n\n switch (placementPrimary) {\n case 'top':\n targetElPosition.top = hostElPosition.top - targetElement.offsetHeight;\n targetElPosition.bottom += hostElPosition.top - targetElement.offsetHeight;\n targetElPosition.left = shiftWidth[placementSecondary];\n targetElPosition.right += shiftWidth[placementSecondary];\n break;\n case 'bottom':\n targetElPosition.top = shiftHeight[placementPrimary];\n targetElPosition.bottom += shiftHeight[placementPrimary];\n targetElPosition.left = shiftWidth[placementSecondary];\n targetElPosition.right += shiftWidth[placementSecondary];\n break;\n case 'left':\n targetElPosition.top = shiftHeight[placementSecondary];\n targetElPosition.bottom += shiftHeight[placementSecondary];\n targetElPosition.left = hostElPosition.left - targetElement.offsetWidth;\n targetElPosition.right += hostElPosition.left - targetElement.offsetWidth;\n break;\n case 'right':\n targetElPosition.top = shiftHeight[placementSecondary];\n targetElPosition.bottom += shiftHeight[placementSecondary];\n targetElPosition.left = shiftWidth[placementPrimary];\n targetElPosition.right += shiftWidth[placementPrimary];\n break;\n }\n\n targetElPosition.top = Math.round(targetElPosition.top);\n targetElPosition.bottom = Math.round(targetElPosition.bottom);\n targetElPosition.left = Math.round(targetElPosition.left);\n targetElPosition.right = Math.round(targetElPosition.right);\n\n return targetElPosition;\n }\n\n private getStyle(element: HTMLElement, prop: string): string { return (window.getComputedStyle(element) as any)[prop]; }\n\n private isStaticPositioned(element: HTMLElement): boolean {\n return (this.getStyle(element, 'position') || 'static') === 'static';\n }\n\n private offsetParent(element: HTMLElement): HTMLElement {\n let offsetParentEl = <HTMLElement>element.offsetParent || document.documentElement;\n\n while (offsetParentEl && offsetParentEl !== document.documentElement && this.isStaticPositioned(offsetParentEl)) {\n offsetParentEl = <HTMLElement>offsetParentEl.offsetParent;\n }\n\n return offsetParentEl || document.documentElement;\n }\n}\n\nconst positionService = new Positioning();\n\nexport function positionElements(\n hostElement: HTMLElement, targetElement: HTMLElement, placement: string, appendToBody?: boolean): void {\n const pos = positionService.positionElements(hostElement, targetElement, placement, appendToBody);\n\n targetElement.style.top = `${pos.top}px`;\n targetElement.style.left = `${pos.left}px`;\n}\n\ninterface DecoratorInvocation {\n type: Function;\n args?: any[];\n}\n"]} |