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@ngx-gallery/lightbox

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Angular gallery directive that hooks the lightbox with the images automatically.

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/** * @fileoverview added by tsickle * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc */ import { Component, Optional, ChangeDetectionStrategy, ElementRef, Inject } from '@angular/core'; import { DomSanitizer } from '@angular/platform-browser'; import { DOCUMENT } from '@angular/common'; import { FocusTrapFactory } from '@angular/cdk/a11y'; import { lightboxAnimation } from './lightbox.animation'; var LightboxComponent = /** @class */ (function () { function LightboxComponent(_document, _focusTrapFactory, _elementRef, sanitizer) { this._document = _document; this._focusTrapFactory = _focusTrapFactory; this._elementRef = _elementRef; this.sanitizer = sanitizer; /** * State of the lightbox animation. */ this.state = 'enter'; this._savePreviouslyFocusedElement(); } /** Callback, invoked whenever an animation on the host completes. */ /** * Callback, invoked whenever an animation on the host completes. * @param {?} event * @return {?} */ LightboxComponent.prototype.onAnimationDone = /** * Callback, invoked whenever an animation on the host completes. * @param {?} event * @return {?} */ function (event) { if (event.toState === 'enter') { this._trapFocus(); } else { this.overlayRef.dispose(); this._restoreFocus(); } }; /** Moves the focus inside the focus trap. */ /** * Moves the focus inside the focus trap. * @private * @return {?} */ LightboxComponent.prototype._trapFocus = /** * Moves the focus inside the focus trap. * @private * @return {?} */ function () { if (!this._focusTrap) { this._focusTrap = this._focusTrapFactory.create(this._elementRef.nativeElement); } // If were to attempt to focus immediately, then the content of the lightbox would not yet be // ready in instances where change detection has to run first. To deal with this, we simply // wait for the microtask queue to be empty. this._focusTrap.focusInitialElementWhenReady(); }; /** Saves a reference to the element that was focused before the lightbox was opened. */ /** * Saves a reference to the element that was focused before the lightbox was opened. * @private * @return {?} */ LightboxComponent.prototype._savePreviouslyFocusedElement = /** * Saves a reference to the element that was focused before the lightbox was opened. * @private * @return {?} */ function () { var _this = this; if (this._document) { this._elementFocusedBeforeDialogWasOpened = (/** @type {?} */ (this._document.activeElement)); // Note that there is no focus method when rendering on the server. if (this._elementRef.nativeElement.focus) { // Move focus onto the lightbox immediately in order to prevent the user from accidentally // opening multiple dialogs at the same time. Needs to be async, because the element // may not be focusable immediately. Promise.resolve().then(function () { return _this._elementRef.nativeElement.focus(); }); } } }; /** Restores focus to the element that was focused before the lightbox opened. */ /** * Restores focus to the element that was focused before the lightbox opened. * @private * @return {?} */ LightboxComponent.prototype._restoreFocus = /** * Restores focus to the element that was focused before the lightbox opened. * @private * @return {?} */ function () { /** @type {?} */ var toFocus = this._elementFocusedBeforeDialogWasOpened; // We need the extra check, because IE can set the `activeElement` to null in some cases. if (toFocus && typeof toFocus.focus === 'function') { toFocus.focus(); } if (this._focusTrap) { this._focusTrap.destroy(); } }; LightboxComponent.decorators = [ { type: Component, args: [{ selector: 'lightbox', changeDetection: ChangeDetectionStrategy.OnPush, animations: [lightboxAnimation], template: "\n <gallery [id]=\"id\" [destroyRef]=\"false\" [skipInitConfig]=\"true\">\n <i class=\"g-btn-close\" aria-label=\"Close\" (click)=\"overlayRef.detach()\"\n [innerHTML]=\"sanitizer.bypassSecurityTrustHtml(closeIcon)\"></i>\n </gallery>\n ", host: { 'tabindex': '-1', 'aria-modal': 'true', '[attr.id]': '"lightbox-" + id', '[attr.role]': 'role', '[attr.aria-labelledby]': 'ariaLabel ? null : ariaLabelledBy', '[attr.aria-label]': 'ariaLabel', '[attr.aria-describedby]': 'ariaDescribedBy || null', '[@lightbox]': 'state', '(@lightbox.done)': 'onAnimationDone($event)', }, styles: ["::ng-deep lightbox{position:relative;display:block;width:1100px;height:800px;max-width:94vw;max-height:90vh;border-radius:4px;overflow:hidden;box-shadow:0 11px 15px -7px rgba(0,0,0,.2),0 24px 38px 3px rgba(0,0,0,.14),0 9px 46px 8px rgba(0,0,0,.12)}::ng-deep lightbox:focus{outline:0}::ng-deep lightbox gallery{overflow:hidden;margin:0;display:block;width:100%;height:100%}::ng-deep .g-backdrop{background-color:rgba(0,0,0,.32)}::ng-deep .fullscreen{width:100%}::ng-deep .fullscreen ::ng-deep lightbox{max-width:unset;max-height:unset;position:fixed;top:0;left:0;bottom:0;right:0;height:100%;width:100%;border-radius:0}::ng-deep .g-overlay{margin:auto}@media only screen and (max-width:480px){::ng-deep .g-overlay{width:100%}::ng-deep .g-overlay ::ng-deep lightbox{max-width:unset;max-height:unset;position:fixed;top:0;left:0;bottom:0;right:0;height:100%;width:100%;border-radius:0}}::ng-deep .g-btn-close{position:absolute;right:.9em;top:.9em;z-index:60;cursor:pointer;width:20px;height:20px}@media only screen and (max-width:480px){::ng-deep .g-btn-close{right:.7em;top:.7em}}"] }] } ]; /** @nocollapse */ LightboxComponent.ctorParameters = function () { return [ { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] }, { type: FocusTrapFactory }, { type: ElementRef }, { type: DomSanitizer } ]; }; return LightboxComponent; }()); export { LightboxComponent }; if (false) { /** * Gallery ref id * @type {?} */ LightboxComponent.prototype.id; /** * Overlay ref to close the lightbox * @type {?} */ LightboxComponent.prototype.overlayRef; /** * Close button svg data * @type {?} */ LightboxComponent.prototype.closeIcon; /** * State of the lightbox animation. * @type {?} */ LightboxComponent.prototype.state; /** * The ARIA role of the lightbox element. * @type {?} */ LightboxComponent.prototype.role; /** * Aria label to assign to the lightbox element * @type {?} */ LightboxComponent.prototype.ariaLabel; /** * ID of the element that should be considered as the lightbox's label. * @type {?} */ LightboxComponent.prototype.ariaLabelledBy; /** * ID of the element that describes the lightbox. * @type {?} */ LightboxComponent.prototype.ariaDescribedBy; /** * The class that traps and manages focus within the lightbox. * @type {?} * @private */ LightboxComponent.prototype._focusTrap; /** * Element that was focused before the lightbox was opened. 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null : ariaLabelledBy',\n    '[attr.aria-label]': 'ariaLabel',\n    '[attr.aria-describedby]': 'ariaDescribedBy || null',\n    '[@lightbox]': 'state',\n    '(@lightbox.done)': 'onAnimationDone($event)',\n  }\n})\nexport class LightboxComponent {\n\n  /** Gallery ref id */\n  id: string;\n\n  /** Overlay ref to close the lightbox */\n  overlayRef: OverlayRef;\n\n  /** Close button svg data */\n  closeIcon: string;\n\n  /** State of the lightbox animation. */\n  state: 'void' | 'enter' | 'exit' = 'enter';\n\n  /** The ARIA role of the lightbox element. */\n  role: string;\n\n  /** Aria label to assign to the lightbox element */\n  ariaLabel: string;\n\n  /** ID of the element that should be considered as the lightbox's label. */\n  ariaLabelledBy: string;\n\n  /** ID of the element that describes the lightbox. */\n  ariaDescribedBy: string;\n\n  /** The class that traps and manages focus within the lightbox. */\n  private _focusTrap: FocusTrap;\n\n  /** Element that was focused before the lightbox was opened. Save this to restore upon close. */\n  private _elementFocusedBeforeDialogWasOpened: HTMLElement;\n\n  constructor(@Optional() @Inject(DOCUMENT) private _document: any,\n              private _focusTrapFactory: FocusTrapFactory,\n              private _elementRef: ElementRef,\n              public sanitizer: DomSanitizer) {\n    this._savePreviouslyFocusedElement();\n  }\n\n  /** Callback, invoked whenever an animation on the host completes. */\n  onAnimationDone(event: AnimationEvent) {\n    if (event.toState === 'enter') {\n      this._trapFocus();\n    } else {\n      this.overlayRef.dispose();\n      this._restoreFocus();\n    }\n  }\n\n  /** Moves the focus inside the focus trap. */\n  private _trapFocus() {\n    if (!this._focusTrap) {\n      this._focusTrap = this._focusTrapFactory.create(this._elementRef.nativeElement);\n    }\n    // If were to attempt to focus immediately, then the content of the lightbox would not yet be\n    // ready in instances where change detection has to run first. To deal with this, we simply\n    // wait for the microtask queue to be empty.\n    this._focusTrap.focusInitialElementWhenReady();\n  }\n\n  /** Saves a reference to the element that was focused before the lightbox was opened. */\n  private _savePreviouslyFocusedElement() {\n    if (this._document) {\n      this._elementFocusedBeforeDialogWasOpened = this._document.activeElement as HTMLElement;\n\n      // Note that there is no focus method when rendering on the server.\n      if (this._elementRef.nativeElement.focus) {\n        // Move focus onto the lightbox immediately in order to prevent the user from accidentally\n        // opening multiple dialogs at the same time. Needs to be async, because the element\n        // may not be focusable immediately.\n        Promise.resolve().then(() => this._elementRef.nativeElement.focus());\n      }\n    }\n  }\n\n  /** Restores focus to the element that was focused before the lightbox opened. */\n  private _restoreFocus() {\n    const toFocus = this._elementFocusedBeforeDialogWasOpened;\n\n    // We need the extra check, because IE can set the `activeElement` to null in some cases.\n    if (toFocus && typeof toFocus.focus === 'function') {\n      toFocus.focus();\n    }\n\n    if (this._focusTrap) {\n      this._focusTrap.destroy();\n    }\n  }\n}\n"]}