@spartacus/storefront
Version:
Spartacus Storefront is a package that you can include in your application, which allows you to add default storefront features.
261 lines • 34 kB
JavaScript
import { Injectable } from '@angular/core';
import * as i0 from "@angular/core";
import * as i1 from "@spartacus/core";
export class PositioningService {
constructor(winRef) {
this.winRef = winRef;
}
get allowedPlacements() {
return [
'top',
'bottom',
'left',
'right',
'top-left',
'top-right',
'bottom-left',
'bottom-right',
'left-top',
'left-bottom',
'right-top',
'right-bottom',
];
}
get placementSeparator() {
return /\s+/;
}
get window() {
return this.winRef.nativeWindow;
}
get document() {
return this.winRef.document;
}
getAllStyles(element) {
var _a;
return (_a = this.window) === null || _a === void 0 ? void 0 : _a.getComputedStyle(element);
}
getPositionStyleProperty(element) {
const styles = this.getAllStyles(element);
if (styles)
return styles['position'] || undefined;
}
isStaticPositioned(element) {
return (this.getPositionStyleProperty(element) || 'static') === 'static';
}
offsetParent(element) {
let offsetParentEl = element.offsetParent || this.document.documentElement;
while (offsetParentEl &&
offsetParentEl !== this.document.documentElement &&
this.isStaticPositioned(offsetParentEl)) {
offsetParentEl = offsetParentEl.offsetParent;
}
return offsetParentEl || this.document.documentElement;
}
position(element, round = true) {
let elPosition;
let parentOffset = {
width: 0,
height: 0,
top: 0,
bottom: 0,
left: 0,
right: 0,
};
if (this.getPositionStyleProperty(element) === 'fixed') {
elPosition = element.getBoundingClientRect();
elPosition = {
top: elPosition.top,
bottom: elPosition.bottom,
left: elPosition.left,
right: elPosition.right,
height: elPosition.height,
width: elPosition.width,
};
}
else {
const offsetParentEl = this.offsetParent(element);
elPosition = this.offset(element, false);
if (offsetParentEl !== this.document.documentElement) {
parentOffset = this.offset(offsetParentEl, false);
}
parentOffset.top += offsetParentEl.clientTop;
parentOffset.left += offsetParentEl.clientLeft;
}
elPosition.top -= parentOffset.top;
elPosition.bottom -= parentOffset.top;
elPosition.left -= parentOffset.left;
elPosition.right -= parentOffset.left;
if (round) {
elPosition.top = Math.round(elPosition.top);
elPosition.bottom = Math.round(elPosition.bottom);
elPosition.left = Math.round(elPosition.left);
elPosition.right = Math.round(elPosition.right);
}
return elPosition;
}
offset(element, round = true) {
const elBcr = element.getBoundingClientRect();
const viewportOffset = {
top: (this.window &&
this.window.pageYOffset - this.document.documentElement.clientTop) ||
0,
left: (this.window &&
this.window.pageXOffset - this.document.documentElement.clientLeft) ||
0,
};
const elOffset = {
height: elBcr.height || element.offsetHeight,
width: elBcr.width || element.offsetWidth,
top: elBcr.top + viewportOffset.top,
bottom: elBcr.bottom + viewportOffset.top,
left: elBcr.left + viewportOffset.left,
right: elBcr.right + viewportOffset.left,
};
if (round) {
elOffset.height = Math.round(elOffset.height);
elOffset.width = Math.round(elOffset.width);
elOffset.top = Math.round(elOffset.top);
elOffset.bottom = Math.round(elOffset.bottom);
elOffset.left = Math.round(elOffset.left);
elOffset.right = Math.round(elOffset.right);
}
return elOffset;
}
/*
Return false if the element to position is outside the viewport.
*/
_positionElements(hostElement, targetElement, placement, appendToBody) {
var _a, _b;
const [placementPrimary = 'top', placementSecondary = 'center'] = placement.split('-');
const hostElPosition = appendToBody
? this.offset(hostElement, false)
: this.position(hostElement, false);
const targetElStyles = this.getAllStyles(targetElement);
if (targetElStyles) {
const marginTop = parseFloat(targetElStyles.marginTop);
const marginBottom = parseFloat(targetElStyles.marginBottom);
const marginLeft = parseFloat(targetElStyles.marginLeft);
const marginRight = parseFloat(targetElStyles.marginRight);
let topPosition = 0;
let leftPosition = 0;
switch (placementPrimary) {
case 'top':
topPosition =
hostElPosition.top -
(targetElement.offsetHeight + marginTop + marginBottom);
break;
case 'bottom':
topPosition = hostElPosition.top + hostElPosition.height;
break;
case 'left':
leftPosition =
hostElPosition.left -
(targetElement.offsetWidth + marginLeft + marginRight);
break;
case 'right':
leftPosition = hostElPosition.left + hostElPosition.width;
break;
}
switch (placementSecondary) {
case 'top':
topPosition = hostElPosition.top;
break;
case 'bottom':
topPosition =
hostElPosition.top +
hostElPosition.height -
targetElement.offsetHeight;
break;
case 'left':
leftPosition = hostElPosition.left;
break;
case 'right':
leftPosition =
hostElPosition.left +
hostElPosition.width -
targetElement.offsetWidth;
break;
case 'center':
if (placementPrimary === 'top' || placementPrimary === 'bottom') {
leftPosition =
hostElPosition.left +
hostElPosition.width / 2 -
targetElement.offsetWidth / 2;
}
else {
topPosition =
hostElPosition.top +
hostElPosition.height / 2 -
targetElement.offsetHeight / 2;
}
break;
}
targetElement.style.transform = `translate(${Math.round(leftPosition)}px, ${Math.round(topPosition)}px)`;
// Check if the targetElement is inside the viewport
const targetElBCR = targetElement.getBoundingClientRect();
const html = this.document.documentElement;
const windowHeight = ((_a = this.window) === null || _a === void 0 ? void 0 : _a.innerHeight) || html.clientHeight;
const windowWidth = ((_b = this.window) === null || _b === void 0 ? void 0 : _b.innerWidth) || html.clientWidth;
return (targetElBCR.left >= 0 &&
targetElBCR.top >= 0 &&
targetElBCR.right <= windowWidth &&
targetElBCR.bottom <= windowHeight);
}
return false;
}
/*
* Accept the placement array and applies the appropriate placement dependent on the viewport.
* Returns the applied placement.
* In case of auto placement, placements are selected in order
* 'top', 'bottom', 'left', 'right',
* 'top-left', 'top-right',
* 'bottom-left', 'bottom-right',
* 'left-top', 'left-bottom',
* 'right-top', 'right-bottom'.
* */
positionElements(hostElement, targetElement, placement, appendToBody) {
const placementVals = Array.isArray(placement)
? placement
: placement.split(this.placementSeparator);
let hasAuto = placementVals.findIndex((val) => val === 'auto');
if (hasAuto >= 0) {
this.allowedPlacements.forEach((obj) => {
if (placementVals.find((val) => val.search('^' + obj) !== -1) == null) {
placementVals.splice(hasAuto++, 1, obj);
}
});
}
const style = targetElement.style;
style.position = 'absolute';
style.top = '0';
style.left = '0';
let testPlacement = 'auto';
let isInViewport = false;
for (testPlacement of placementVals) {
if (this._positionElements(hostElement, targetElement, testPlacement, appendToBody)) {
isInViewport = true;
break;
}
}
if (!isInViewport) {
this._positionElements(hostElement, targetElement, testPlacement, appendToBody);
}
return testPlacement;
}
getPositioningClass(position, autoPositioning) {
let positionClass = `${position || 'top'}`;
if (autoPositioning && positionClass !== 'auto') {
positionClass = `${positionClass} auto`;
}
return positionClass;
}
}
PositioningService.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "12.0.5", ngImport: i0, type: PositioningService, deps: [{ token: i1.WindowRef }], target: i0.ɵɵFactoryTarget.Injectable });
PositioningService.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "12.0.5", ngImport: i0, type: PositioningService, providedIn: 'root' });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "12.0.5", ngImport: i0, type: PositioningService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root',
}]
}], ctorParameters: function () { return [{ type: i1.WindowRef }]; } });
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{ Injectable } from '@angular/core';\nimport { WindowRef } from '@spartacus/core';\nimport {\n  PopoverPosition,\n  PopoverPositionArray,\n} from '../../components/popover/popover.model';\n\n@Injectable({\n  providedIn: 'root',\n})\nexport class PositioningService {\n  constructor(protected winRef: WindowRef) {}\n\n  protected get allowedPlacements(): Array<PopoverPositionArray> {\n    return [\n      'top',\n      'bottom',\n      'left',\n      'right',\n      'top-left',\n      'top-right',\n      'bottom-left',\n      'bottom-right',\n      'left-top',\n      'left-bottom',\n      'right-top',\n      'right-bottom',\n    ];\n  }\n\n  protected get placementSeparator(): RegExp {\n    return /\\s+/;\n  }\n\n  protected get window(): Window | undefined {\n    return this.winRef.nativeWindow;\n  }\n\n  protected get document(): Document {\n    return this.winRef.document;\n  }\n\n  protected getAllStyles(\n    element: HTMLElement\n  ): CSSStyleDeclaration | undefined {\n    return this.window?.getComputedStyle(element);\n  }\n\n  protected getPositionStyleProperty(element: HTMLElement): string | undefined {\n    const styles = this.getAllStyles(element);\n\n    if (styles) return styles['position'] || undefined;\n  }\n\n  protected isStaticPositioned(element: HTMLElement): boolean {\n    return (this.getPositionStyleProperty(element) || 'static') === 'static';\n  }\n\n  protected offsetParent(element: HTMLElement): HTMLElement {\n    let offsetParentEl =\n      <HTMLElement>element.offsetParent || this.document.documentElement;\n\n    while (\n      offsetParentEl &&\n      offsetParentEl !== this.document.documentElement &&\n      this.isStaticPositioned(offsetParentEl)\n    ) {\n      offsetParentEl = <HTMLElement>offsetParentEl.offsetParent;\n    }\n\n    return offsetParentEl || this.document.documentElement;\n  }\n\n  protected position(element: HTMLElement, round = true): ClientRect {\n    let elPosition: ClientRect;\n    let parentOffset: ClientRect = {\n      width: 0,\n      height: 0,\n      top: 0,\n      bottom: 0,\n      left: 0,\n      right: 0,\n    };\n\n    if (this.getPositionStyleProperty(element) === 'fixed') {\n      elPosition = element.getBoundingClientRect();\n      elPosition = {\n        top: elPosition.top,\n        bottom: elPosition.bottom,\n        left: elPosition.left,\n        right: elPosition.right,\n        height: elPosition.height,\n        width: elPosition.width,\n      };\n    } else {\n      const offsetParentEl = this.offsetParent(element);\n\n      elPosition = this.offset(element, false);\n\n      if (offsetParentEl !== this.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  protected offset(element: HTMLElement, round = true): ClientRect {\n    const elBcr = element.getBoundingClientRect();\n    const viewportOffset = {\n      top:\n        (this.window &&\n          this.window.pageYOffset - this.document.documentElement.clientTop) ||\n        0,\n      left:\n        (this.window &&\n          this.window.pageXOffset - this.document.documentElement.clientLeft) ||\n        0,\n    };\n\n    const 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  /*\n    Return false if the element to position is outside the viewport.\n  */\n  protected _positionElements(\n    hostElement: HTMLElement,\n    targetElement: HTMLElement,\n    placement: string,\n    appendToBody?: boolean\n  ): boolean {\n    const [placementPrimary = 'top', placementSecondary = 'center'] =\n      placement.split('-');\n\n    const hostElPosition = appendToBody\n      ? this.offset(hostElement, false)\n      : this.position(hostElement, false);\n    const targetElStyles = this.getAllStyles(targetElement);\n\n    if (targetElStyles) {\n      const marginTop = parseFloat(targetElStyles.marginTop);\n      const marginBottom = parseFloat(targetElStyles.marginBottom);\n      const marginLeft = parseFloat(targetElStyles.marginLeft);\n      const marginRight = parseFloat(targetElStyles.marginRight);\n\n      let topPosition = 0;\n      let leftPosition = 0;\n\n      switch (placementPrimary) {\n        case 'top':\n          topPosition =\n            hostElPosition.top -\n            (targetElement.offsetHeight + marginTop + marginBottom);\n          break;\n        case 'bottom':\n          topPosition = hostElPosition.top + hostElPosition.height;\n          break;\n        case 'left':\n          leftPosition =\n            hostElPosition.left -\n            (targetElement.offsetWidth + marginLeft + marginRight);\n          break;\n        case 'right':\n          leftPosition = hostElPosition.left + hostElPosition.width;\n          break;\n      }\n\n      switch (placementSecondary) {\n        case 'top':\n          topPosition = hostElPosition.top;\n          break;\n        case 'bottom':\n          topPosition =\n            hostElPosition.top +\n            hostElPosition.height -\n            targetElement.offsetHeight;\n          break;\n        case 'left':\n          leftPosition = hostElPosition.left;\n          break;\n        case 'right':\n          leftPosition =\n            hostElPosition.left +\n            hostElPosition.width -\n            targetElement.offsetWidth;\n          break;\n        case 'center':\n          if (placementPrimary === 'top' || placementPrimary === 'bottom') {\n            leftPosition =\n              hostElPosition.left +\n              hostElPosition.width / 2 -\n              targetElement.offsetWidth / 2;\n          } else {\n            topPosition =\n              hostElPosition.top +\n              hostElPosition.height / 2 -\n              targetElement.offsetHeight / 2;\n          }\n          break;\n      }\n\n      targetElement.style.transform = `translate(${Math.round(\n        leftPosition\n      )}px, ${Math.round(topPosition)}px)`;\n\n      // Check if the targetElement is inside the viewport\n      const targetElBCR = targetElement.getBoundingClientRect();\n      const html = this.document.documentElement;\n      const windowHeight = this.window?.innerHeight || html.clientHeight;\n      const windowWidth = this.window?.innerWidth || html.clientWidth;\n\n      return (\n        targetElBCR.left >= 0 &&\n        targetElBCR.top >= 0 &&\n        targetElBCR.right <= windowWidth &&\n        targetElBCR.bottom <= windowHeight\n      );\n    }\n\n    return false;\n  }\n\n  /*\n   * Accept the placement array and applies the appropriate placement dependent on the viewport.\n   * Returns the applied placement.\n   * In case of auto placement, placements are selected in order\n   *   'top', 'bottom', 'left', 'right',\n   *   'top-left', 'top-right',\n   *   'bottom-left', 'bottom-right',\n   *   'left-top', 'left-bottom',\n   *   'right-top', 'right-bottom'.\n   * */\n  positionElements(\n    hostElement: HTMLElement,\n    targetElement: HTMLElement,\n    placement: string | PopoverPosition | PopoverPositionArray,\n    appendToBody?: boolean\n  ): PopoverPosition {\n    const placementVals: Array<PopoverPosition> = Array.isArray(placement)\n      ? placement\n      : (placement.split(this.placementSeparator) as Array<PopoverPosition>);\n\n    let hasAuto = placementVals.findIndex((val) => val === 'auto');\n    if (hasAuto >= 0) {\n      this.allowedPlacements.forEach((obj) => {\n        if (placementVals.find((val) => val.search('^' + obj) !== -1) == null) {\n          placementVals.splice(hasAuto++, 1, obj as PopoverPosition);\n        }\n      });\n    }\n\n    const style = targetElement.style;\n    style.position = 'absolute';\n    style.top = '0';\n    style.left = '0';\n\n    let testPlacement: PopoverPosition = 'auto';\n    let isInViewport = false;\n    for (testPlacement of placementVals) {\n      if (\n        this._positionElements(\n          hostElement,\n          targetElement,\n          testPlacement,\n          appendToBody\n        )\n      ) {\n        isInViewport = true;\n        break;\n      }\n    }\n\n    if (!isInViewport) {\n      this._positionElements(\n        hostElement,\n        targetElement,\n        testPlacement,\n        appendToBody\n      );\n    }\n\n    return testPlacement;\n  }\n\n  getPositioningClass(\n    position?: PopoverPosition,\n    autoPositioning?: boolean\n  ): string {\n    let positionClass = `${position || 'top'}`;\n    if (autoPositioning && positionClass !== 'auto') {\n      positionClass = `${positionClass} auto`;\n    }\n\n    return positionClass;\n  }\n}\n"]}