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128 lines
4.5 KiB
128 lines
4.5 KiB
/*!
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* (C) Ionic http://ionicframework.com - MIT License
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*/
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import { c as componentOnReady } from './helpers.js';
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import { e as printRequiredElementError } from './index4.js';
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const ION_CONTENT_TAG_NAME = 'ION-CONTENT';
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const ION_CONTENT_ELEMENT_SELECTOR = 'ion-content';
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const ION_CONTENT_CLASS_SELECTOR = '.ion-content-scroll-host';
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/**
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* Selector used for implementations reliant on `<ion-content>` for scroll event changes.
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*
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* Developers should use the `.ion-content-scroll-host` selector to target the element emitting
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* scroll events. With virtual scroll implementations this will be the host element for
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* the scroll viewport.
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*/
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const ION_CONTENT_SELECTOR = `${ION_CONTENT_ELEMENT_SELECTOR}, ${ION_CONTENT_CLASS_SELECTOR}`;
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const isIonContent = (el) => el.tagName === ION_CONTENT_TAG_NAME;
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/**
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* Waits for the element host fully initialize before
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* returning the inner scroll element.
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*
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* For `ion-content` the scroll target will be the result
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* of the `getScrollElement` function.
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*
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* For custom implementations it will be the element host
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* or a selector within the host, if supplied through `scrollTarget`.
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*/
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const getScrollElement = async (el) => {
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if (isIonContent(el)) {
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await new Promise((resolve) => componentOnReady(el, resolve));
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return el.getScrollElement();
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}
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return el;
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};
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/**
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* Queries the element matching the selector for IonContent.
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* See ION_CONTENT_SELECTOR for the selector used.
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*/
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const findIonContent = (el) => {
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/**
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* First we try to query the custom scroll host selector in cases where
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* the implementation is using an outer `ion-content` with an inner custom
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* scroll container.
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*/
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const customContentHost = el.querySelector(ION_CONTENT_CLASS_SELECTOR);
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if (customContentHost) {
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return customContentHost;
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}
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return el.querySelector(ION_CONTENT_SELECTOR);
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};
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/**
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* Queries the closest element matching the selector for IonContent.
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*/
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const findClosestIonContent = (el) => {
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return el.closest(ION_CONTENT_SELECTOR);
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};
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/**
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* Scrolls to the top of the element. If an `ion-content` is found, it will scroll
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* using the public API `scrollToTop` with a duration.
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*/
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const scrollToTop = (el, durationMs) => {
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if (isIonContent(el)) {
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const content = el;
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return content.scrollToTop(durationMs);
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}
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return Promise.resolve(el.scrollTo({
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top: 0,
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left: 0,
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behavior: 'smooth' ,
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}));
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};
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/**
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* Scrolls by a specified X/Y distance in the component. If an `ion-content` is found, it will scroll
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* using the public API `scrollByPoint` with a duration.
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*/
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const scrollByPoint = (el, x, y, durationMs) => {
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if (isIonContent(el)) {
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const content = el;
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return content.scrollByPoint(x, y, durationMs);
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}
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return Promise.resolve(el.scrollBy({
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top: y,
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left: x,
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behavior: durationMs > 0 ? 'smooth' : 'auto',
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}));
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};
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/**
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* Prints an error informing developers that an implementation requires an element to be used
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* within either the `ion-content` selector or the `.ion-content-scroll-host` class.
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*/
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const printIonContentErrorMsg = (el) => {
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return printRequiredElementError(el, ION_CONTENT_ELEMENT_SELECTOR);
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};
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/**
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* Several components in Ionic need to prevent scrolling
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* during a gesture (card modal, range, item sliding, etc).
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* Use this utility to account for ion-content and custom content hosts.
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*/
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const disableContentScrollY = (contentEl) => {
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if (isIonContent(contentEl)) {
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const ionContent = contentEl;
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const initialScrollY = ionContent.scrollY;
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ionContent.scrollY = false;
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/**
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* This should be passed into resetContentScrollY
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* so that we can revert ion-content's scrollY to the
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* correct state. For example, if scrollY = false
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* initially, we do not want to enable scrolling
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* when we call resetContentScrollY.
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*/
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return initialScrollY;
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}
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else {
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contentEl.style.setProperty('overflow', 'hidden');
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return true;
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}
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};
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const resetContentScrollY = (contentEl, initialScrollY) => {
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if (isIonContent(contentEl)) {
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contentEl.scrollY = initialScrollY;
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}
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else {
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contentEl.style.removeProperty('overflow');
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}
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};
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export { ION_CONTENT_CLASS_SELECTOR as I, findClosestIonContent as a, ION_CONTENT_ELEMENT_SELECTOR as b, scrollByPoint as c, disableContentScrollY as d, findIonContent as f, getScrollElement as g, isIonContent as i, printIonContentErrorMsg as p, resetContentScrollY as r, scrollToTop as s };
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