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import * as __WEBPACK_EXTERNAL_MODULE__wordpress_interactivity_8e89b257__ from "@wordpress/interactivity"; |
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/******/ // The require scope |
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/******/ var __webpack_require__ = {}; |
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/******/ |
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/************************************************************************/ |
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/******/ /* webpack/runtime/define property getters */ |
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/******/ (() => { |
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/******/ // define getter functions for harmony exports |
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/******/ __webpack_require__.d = (exports, definition) => { |
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/******/ for(var key in definition) { |
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/******/ if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) { |
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/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] }); |
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/******/ } |
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/******/ } |
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/******/ }; |
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/******/ })(); |
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/******/ |
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/******/ /* webpack/runtime/hasOwnProperty shorthand */ |
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/******/ (() => { |
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/******/ __webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop)) |
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/******/ })(); |
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/******/ |
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/************************************************************************/ |
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var __webpack_exports__ = {}; |
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|
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;// CONCATENATED MODULE: external "@wordpress/interactivity" |
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var x = y => { var x = {}; __webpack_require__.d(x, y); return x; } |
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var y = x => () => x |
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const interactivity_namespaceObject = x({ ["getContext"]: () => __WEBPACK_EXTERNAL_MODULE__wordpress_interactivity_8e89b257__.getContext, ["getElement"]: () => __WEBPACK_EXTERNAL_MODULE__wordpress_interactivity_8e89b257__.getElement, ["store"]: () => __WEBPACK_EXTERNAL_MODULE__wordpress_interactivity_8e89b257__.store }); |
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;// CONCATENATED MODULE: ./packages/block-library/src/image/view.js |
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/** |
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* WordPress dependencies |
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*/ |
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|
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const focusableSelectors = ['a[href]', 'area[href]', 'input:not([disabled]):not([type="hidden"]):not([aria-hidden])', 'select:not([disabled]):not([aria-hidden])', 'textarea:not([disabled]):not([aria-hidden])', 'button:not([disabled]):not([aria-hidden])', 'iframe', 'object', 'embed', '[contenteditable]', '[tabindex]:not([tabindex^="-"])']; |
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|
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/** |
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* Stores a context-bound scroll handler. |
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* |
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* This callback could be defined inline inside of the store |
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* object but it's created externally to avoid confusion about |
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* how its logic is called. This logic is not referenced directly |
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* by the directives in the markup because the scroll event we |
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* need to listen to is triggered on the window; so by defining it |
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* outside of the store, we signal that the behavior here is different. |
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* If we find a compelling reason to move it to the store, feel free. |
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* |
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* @type {Function} |
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*/ |
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let scrollCallback; |
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|
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/** |
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* Tracks whether user is touching screen; used to |
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* differentiate behavior for touch and mouse input. |
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* |
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* @type {boolean} |
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*/ |
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let isTouching = false; |
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|
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/** |
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* Tracks the last time the screen was touched; used to |
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* differentiate behavior for touch and mouse input. |
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* |
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* @type {number} |
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*/ |
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let lastTouchTime = 0; |
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|
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/** |
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* Lightbox page-scroll handler: prevents scrolling. |
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* |
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* This handler is added to prevent scrolling behaviors that |
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* trigger content shift while the lightbox is open. |
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* |
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* It would be better to accomplish this through CSS alone, but |
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* using overflow: hidden is currently the only way to do so, and |
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* that causes the layout to shift and prevents the zoom animation |
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* from working in some cases because we're unable to account for |
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* the layout shift when doing the animation calculations. Instead, |
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* here we use JavaScript to prevent and reset the scrolling |
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* behavior. In the future, we may be able to use CSS or overflow: hidden |
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* instead to not rely on JavaScript, but this seems to be the best approach |
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* for now that provides the best visual experience. |
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* |
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* @param {Object} ctx Context object with the `core/image` namespace. |
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*/ |
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function handleScroll(ctx) { |
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// We can't override the scroll behavior on mobile devices |
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// because doing so breaks the pinch to zoom functionality, and we |
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// want to allow users to zoom in further on the high-res image. |
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if (!isTouching && Date.now() - lastTouchTime > 450) { |
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// We are unable to use event.preventDefault() to prevent scrolling |
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// because the scroll event can't be canceled, so we reset the position instead. |
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window.scrollTo(ctx.scrollLeftReset, ctx.scrollTopReset); |
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} |
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} |
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const { |
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state, |
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actions, |
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callbacks |
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} = (0,interactivity_namespaceObject.store)('core/image', { |
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state: { |
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windowWidth: window.innerWidth, |
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windowHeight: window.innerHeight, |
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get roleAttribute() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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return ctx.lightboxEnabled ? 'dialog' : null; |
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}, |
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get ariaModal() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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return ctx.lightboxEnabled ? 'true' : null; |
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}, |
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get dialogLabel() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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return ctx.lightboxEnabled ? ctx.dialogLabel : null; |
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}, |
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get lightboxObjectFit() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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if (ctx.initialized) { |
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return 'cover'; |
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} |
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}, |
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get enlargedImgSrc() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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return ctx.initialized ? ctx.imageUploadedSrc : 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='; |
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} |
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}, |
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actions: { |
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showLightbox(event) { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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// We can't initialize the lightbox until the reference |
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// image is loaded, otherwise the UX is broken. |
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if (!ctx.imageLoaded) { |
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return; |
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} |
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ctx.initialized = true; |
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ctx.lastFocusedElement = window.document.activeElement; |
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ctx.scrollDelta = 0; |
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ctx.pointerType = event.pointerType; |
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ctx.lightboxEnabled = true; |
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setStyles(ctx, ctx.imageRef); |
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ctx.scrollTopReset = window.pageYOffset || document.documentElement.scrollTop; |
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|
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// In most cases, this value will be 0, but this is included |
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// in case a user has created a page with horizontal scrolling. |
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ctx.scrollLeftReset = window.pageXOffset || document.documentElement.scrollLeft; |
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|
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// We define and bind the scroll callback here so |
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// that we can pass the context and as an argument. |
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// We may be able to change this in the future if we |
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// define the scroll callback in the store instead, but |
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// this approach seems to tbe clearest for now. |
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scrollCallback = handleScroll.bind(null, ctx); |
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|
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// We need to add a scroll event listener to the window |
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// here because we are unable to otherwise access it via |
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// the Interactivity API directives. If we add a native way |
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// to access the window, we can remove this. |
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window.addEventListener('scroll', scrollCallback, false); |
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}, |
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hideLightbox() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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ctx.hideAnimationEnabled = true; |
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if (ctx.lightboxEnabled) { |
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// We want to wait until the close animation is completed |
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// before allowing a user to scroll again. The duration of this |
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// animation is defined in the styles.scss and depends on if the |
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// animation is 'zoom' or 'fade', but in any case we should wait |
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// a few milliseconds longer than the duration, otherwise a user |
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// may scroll too soon and cause the animation to look sloppy. |
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setTimeout(function () { |
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window.removeEventListener('scroll', scrollCallback); |
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// If we don't delay before changing the focus, |
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// the focus ring will appear on Firefox before |
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// the image has finished animating, which looks broken. |
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ctx.lightboxTriggerRef.focus({ |
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preventScroll: true |
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}); |
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}, 450); |
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ctx.lightboxEnabled = false; |
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} |
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}, |
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handleKeydown(event) { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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if (ctx.lightboxEnabled) { |
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if (event.key === 'Tab' || event.keyCode === 9) { |
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// If shift + tab it change the direction |
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if (event.shiftKey && window.document.activeElement === ctx.firstFocusableElement) { |
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event.preventDefault(); |
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ctx.lastFocusableElement.focus(); |
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} else if (!event.shiftKey && window.document.activeElement === ctx.lastFocusableElement) { |
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event.preventDefault(); |
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ctx.firstFocusableElement.focus(); |
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} |
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} |
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if (event.key === 'Escape' || event.keyCode === 27) { |
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actions.hideLightbox(event); |
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} |
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} |
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}, |
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// This is fired just by lazily loaded |
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// images on the page, not all images. |
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handleLoad() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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const { |
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ref |
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} = (0,interactivity_namespaceObject.getElement)(); |
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ctx.imageLoaded = true; |
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ctx.imageCurrentSrc = ref.currentSrc; |
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callbacks.setButtonStyles(); |
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}, |
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handleTouchStart() { |
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isTouching = true; |
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}, |
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handleTouchMove(event) { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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// On mobile devices, we want to prevent triggering the |
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// scroll event because otherwise the page jumps around as |
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// we reset the scroll position. This also means that closing |
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// the lightbox requires that a user perform a simple tap. This |
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// may be changed in the future if we find a better alternative |
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// to override or reset the scroll position during swipe actions. |
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if (ctx.lightboxEnabled) { |
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event.preventDefault(); |
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} |
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}, |
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handleTouchEnd() { |
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// We need to wait a few milliseconds before resetting |
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// to ensure that pinch to zoom works consistently |
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// on mobile devices when the lightbox is open. |
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lastTouchTime = Date.now(); |
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isTouching = false; |
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} |
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}, |
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callbacks: { |
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initOriginImage() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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const { |
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ref |
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} = (0,interactivity_namespaceObject.getElement)(); |
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ctx.imageRef = ref; |
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if (ref.complete) { |
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ctx.imageLoaded = true; |
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ctx.imageCurrentSrc = ref.currentSrc; |
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} |
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}, |
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initTriggerButton() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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const { |
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ref |
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} = (0,interactivity_namespaceObject.getElement)(); |
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ctx.lightboxTriggerRef = ref; |
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}, |
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initLightbox() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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const { |
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ref |
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} = (0,interactivity_namespaceObject.getElement)(); |
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if (ctx.lightboxEnabled) { |
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const focusableElements = ref.querySelectorAll(focusableSelectors); |
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ctx.firstFocusableElement = focusableElements[0]; |
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ctx.lastFocusableElement = focusableElements[focusableElements.length - 1]; |
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|
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// Move focus to the dialog when opening it. |
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ref.focus(); |
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} |
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}, |
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setButtonStyles() { |
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const { |
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ref |
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} = (0,interactivity_namespaceObject.getElement)(); |
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const { |
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naturalWidth, |
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naturalHeight, |
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offsetWidth, |
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offsetHeight |
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} = ref; |
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|
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// If the image isn't loaded yet, we can't |
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// calculate where the button should be. |
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if (naturalWidth === 0 || naturalHeight === 0) { |
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return; |
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} |
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const figure = ref.parentElement; |
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const figureWidth = ref.parentElement.clientWidth; |
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|
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// We need special handling for the height because |
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// a caption will cause the figure to be taller than |
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// the image, which means we need to account for that |
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// when calculating the placement of the button in the |
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// top right corner of the image. |
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let figureHeight = ref.parentElement.clientHeight; |
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const caption = figure.querySelector('figcaption'); |
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if (caption) { |
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const captionComputedStyle = window.getComputedStyle(caption); |
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if (!['absolute', 'fixed'].includes(captionComputedStyle.position)) { |
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figureHeight = figureHeight - caption.offsetHeight - parseFloat(captionComputedStyle.marginTop) - parseFloat(captionComputedStyle.marginBottom); |
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} |
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} |
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const buttonOffsetTop = figureHeight - offsetHeight; |
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const buttonOffsetRight = figureWidth - offsetWidth; |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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|
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// In the case of an image with object-fit: contain, the |
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// size of the <img> element can be larger than the image itself, |
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// so we need to calculate where to place the button. |
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if (ctx.scaleAttr === 'contain') { |
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// Natural ratio of the image. |
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const naturalRatio = naturalWidth / naturalHeight; |
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// Offset ratio of the image. |
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const offsetRatio = offsetWidth / offsetHeight; |
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if (naturalRatio >= offsetRatio) { |
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// If it reaches the width first, keep |
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// the width and compute the height. |
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const referenceHeight = offsetWidth / naturalRatio; |
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ctx.imageButtonTop = (offsetHeight - referenceHeight) / 2 + buttonOffsetTop + 16; |
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ctx.imageButtonRight = buttonOffsetRight + 16; |
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} else { |
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// If it reaches the height first, keep |
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// the height and compute the width. |
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const referenceWidth = offsetHeight * naturalRatio; |
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ctx.imageButtonTop = buttonOffsetTop + 16; |
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ctx.imageButtonRight = (offsetWidth - referenceWidth) / 2 + buttonOffsetRight + 16; |
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} |
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} else { |
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ctx.imageButtonTop = buttonOffsetTop + 16; |
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ctx.imageButtonRight = buttonOffsetRight + 16; |
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} |
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}, |
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setStylesOnResize() { |
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const ctx = (0,interactivity_namespaceObject.getContext)(); |
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const { |
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ref |
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} = (0,interactivity_namespaceObject.getElement)(); |
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if (ctx.lightboxEnabled && (state.windowWidth || state.windowHeight)) { |
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setStyles(ctx, ref); |
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} |
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} |
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} |
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}); |
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window.addEventListener('resize', debounce(() => { |
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state.windowWidth = window.innerWidth; |
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state.windowHeight = window.innerHeight; |
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})); |
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|
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/** |
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* Computes styles for the lightbox and adds them to the document. |
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* |
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* @function |
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* @param {Object} ctx - Context for the `core/image` namespace. |
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* @param {Object} ref - The element reference. |
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*/ |
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function setStyles(ctx, ref) { |
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// The reference img element lies adjacent |
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// to the event target button in the DOM. |
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let { |
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naturalWidth, |
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naturalHeight, |
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offsetWidth: originalWidth, |
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offsetHeight: originalHeight |
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} = ref; |
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let { |
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x: screenPosX, |
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y: screenPosY |
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} = ref.getBoundingClientRect(); |
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|
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// Natural ratio of the image clicked to open the lightbox. |
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const naturalRatio = naturalWidth / naturalHeight; |
| 368 |
// Original ratio of the image clicked to open the lightbox. |
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let originalRatio = originalWidth / originalHeight; |
| 370 |
|
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// If it has object-fit: contain, recalculate the original sizes |
| 372 |
// and the screen position without the blank spaces. |
| 373 |
if (ctx.scaleAttr === 'contain') { |
| 374 |
if (naturalRatio > originalRatio) { |
| 375 |
const heightWithoutSpace = originalWidth / naturalRatio; |
| 376 |
// Recalculate screen position without the top space. |
| 377 |
screenPosY += (originalHeight - heightWithoutSpace) / 2; |
| 378 |
originalHeight = heightWithoutSpace; |
| 379 |
} else { |
| 380 |
const widthWithoutSpace = originalHeight * naturalRatio; |
| 381 |
// Recalculate screen position without the left space. |
| 382 |
screenPosX += (originalWidth - widthWithoutSpace) / 2; |
| 383 |
originalWidth = widthWithoutSpace; |
| 384 |
} |
| 385 |
} |
| 386 |
originalRatio = originalWidth / originalHeight; |
| 387 |
|
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// Typically, we use the image's full-sized dimensions. If those |
| 389 |
// dimensions have not been set (i.e. an external image with only one size), |
| 390 |
// the image's dimensions in the lightbox are the same |
| 391 |
// as those of the image in the content. |
| 392 |
let imgMaxWidth = parseFloat(ctx.targetWidth !== 'none' ? ctx.targetWidth : naturalWidth); |
| 393 |
let imgMaxHeight = parseFloat(ctx.targetHeight !== 'none' ? ctx.targetHeight : naturalHeight); |
| 394 |
|
| 395 |
// Ratio of the biggest image stored in the database. |
| 396 |
let imgRatio = imgMaxWidth / imgMaxHeight; |
| 397 |
let containerMaxWidth = imgMaxWidth; |
| 398 |
let containerMaxHeight = imgMaxHeight; |
| 399 |
let containerWidth = imgMaxWidth; |
| 400 |
let containerHeight = imgMaxHeight; |
| 401 |
// Check if the target image has a different ratio than the original one (thumbnail). |
| 402 |
// Recalculate the width and height. |
| 403 |
if (naturalRatio.toFixed(2) !== imgRatio.toFixed(2)) { |
| 404 |
if (naturalRatio > imgRatio) { |
| 405 |
// If the width is reached before the height, we keep the maxWidth |
| 406 |
// and recalculate the height. |
| 407 |
// Unless the difference between the maxHeight and the reducedHeight |
| 408 |
// is higher than the maxWidth, where we keep the reducedHeight and |
| 409 |
// recalculate the width. |
| 410 |
const reducedHeight = imgMaxWidth / naturalRatio; |
| 411 |
if (imgMaxHeight - reducedHeight > imgMaxWidth) { |
| 412 |
imgMaxHeight = reducedHeight; |
| 413 |
imgMaxWidth = reducedHeight * naturalRatio; |
| 414 |
} else { |
| 415 |
imgMaxHeight = imgMaxWidth / naturalRatio; |
| 416 |
} |
| 417 |
} else { |
| 418 |
// If the height is reached before the width, we keep the maxHeight |
| 419 |
// and recalculate the width. |
| 420 |
// Unless the difference between the maxWidth and the reducedWidth |
| 421 |
// is higher than the maxHeight, where we keep the reducedWidth and |
| 422 |
// recalculate the height. |
| 423 |
const reducedWidth = imgMaxHeight * naturalRatio; |
| 424 |
if (imgMaxWidth - reducedWidth > imgMaxHeight) { |
| 425 |
imgMaxWidth = reducedWidth; |
| 426 |
imgMaxHeight = reducedWidth / naturalRatio; |
| 427 |
} else { |
| 428 |
imgMaxWidth = imgMaxHeight * naturalRatio; |
| 429 |
} |
| 430 |
} |
| 431 |
containerWidth = imgMaxWidth; |
| 432 |
containerHeight = imgMaxHeight; |
| 433 |
imgRatio = imgMaxWidth / imgMaxHeight; |
| 434 |
|
| 435 |
// Calculate the max size of the container. |
| 436 |
if (originalRatio > imgRatio) { |
| 437 |
containerMaxWidth = imgMaxWidth; |
| 438 |
containerMaxHeight = containerMaxWidth / originalRatio; |
| 439 |
} else { |
| 440 |
containerMaxHeight = imgMaxHeight; |
| 441 |
containerMaxWidth = containerMaxHeight * originalRatio; |
| 442 |
} |
| 443 |
} |
| 444 |
|
| 445 |
// If the image has been pixelated on purpose, keep that size. |
| 446 |
if (originalWidth > containerWidth || originalHeight > containerHeight) { |
| 447 |
containerWidth = originalWidth; |
| 448 |
containerHeight = originalHeight; |
| 449 |
} |
| 450 |
|
| 451 |
// Calculate the final lightbox image size and the |
| 452 |
// scale factor. MaxWidth is either the window container |
| 453 |
// (accounting for padding) or the image resolution. |
| 454 |
let horizontalPadding = 0; |
| 455 |
if (window.innerWidth > 480) { |
| 456 |
horizontalPadding = 80; |
| 457 |
} else if (window.innerWidth > 1920) { |
| 458 |
horizontalPadding = 160; |
| 459 |
} |
| 460 |
const verticalPadding = 80; |
| 461 |
const targetMaxWidth = Math.min(window.innerWidth - horizontalPadding, containerWidth); |
| 462 |
const targetMaxHeight = Math.min(window.innerHeight - verticalPadding, containerHeight); |
| 463 |
const targetContainerRatio = targetMaxWidth / targetMaxHeight; |
| 464 |
if (originalRatio > targetContainerRatio) { |
| 465 |
// If targetMaxWidth is reached before targetMaxHeight |
| 466 |
containerWidth = targetMaxWidth; |
| 467 |
containerHeight = containerWidth / originalRatio; |
| 468 |
} else { |
| 469 |
// If targetMaxHeight is reached before targetMaxWidth |
| 470 |
containerHeight = targetMaxHeight; |
| 471 |
containerWidth = containerHeight * originalRatio; |
| 472 |
} |
| 473 |
const containerScale = originalWidth / containerWidth; |
| 474 |
const lightboxImgWidth = imgMaxWidth * (containerWidth / containerMaxWidth); |
| 475 |
const lightboxImgHeight = imgMaxHeight * (containerHeight / containerMaxHeight); |
| 476 |
|
| 477 |
// Add the CSS variables needed. |
| 478 |
let styleTag = document.getElementById('wp-lightbox-styles'); |
| 479 |
if (!styleTag) { |
| 480 |
styleTag = document.createElement('style'); |
| 481 |
styleTag.id = 'wp-lightbox-styles'; |
| 482 |
document.head.appendChild(styleTag); |
| 483 |
} |
| 484 |
|
| 485 |
// As of this writing, using the calculations above will render the lightbox |
| 486 |
// with a small, erroneous whitespace on the left side of the image in iOS Safari, |
| 487 |
// perhaps due to an inconsistency in how browsers handle absolute positioning and CSS |
| 488 |
// transformation. In any case, adding 1 pixel to the container width and height solves |
| 489 |
// the problem, though this can be removed if the issue is fixed in the future. |
| 490 |
styleTag.innerHTML = ` |
| 491 |
:root { |
| 492 |
--wp--lightbox-initial-top-position: ${screenPosY}px; |
| 493 |
--wp--lightbox-initial-left-position: ${screenPosX}px; |
| 494 |
--wp--lightbox-container-width: ${containerWidth + 1}px; |
| 495 |
--wp--lightbox-container-height: ${containerHeight + 1}px; |
| 496 |
--wp--lightbox-image-width: ${lightboxImgWidth}px; |
| 497 |
--wp--lightbox-image-height: ${lightboxImgHeight}px; |
| 498 |
--wp--lightbox-scale: ${containerScale}; |
| 499 |
--wp--lightbox-scrollbar-width: ${window.innerWidth - document.documentElement.clientWidth}px; |
| 500 |
} |
| 501 |
`; |
| 502 |
} |
| 503 |
|
| 504 |
/** |
| 505 |
* Debounces a function call. |
| 506 |
* |
| 507 |
* @function |
| 508 |
* @param {Function} func - A function to be called |
| 509 |
* @param {number} wait - The time to wait before calling the function |
| 510 |
*/ |
| 511 |
function debounce(func, wait = 50) { |
| 512 |
let timeout; |
| 513 |
return () => { |
| 514 |
const later = () => { |
| 515 |
timeout = null; |
| 516 |
func(); |
| 517 |
}; |
| 518 |
clearTimeout(timeout); |
| 519 |
timeout = setTimeout(later, wait); |
| 520 |
}; |
| 521 |
} |
| 522 |
|
