Merge pull request #2942 from QuantumEntangledAndy/DialogPoly
Polyfill for dialogues in old safari on iOS
This commit is contained in:
Cohee
GitHub
commit
23639ce1fe
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@ -1,3 +1,4 @@
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@import url('/lib/dialog-polyfill.css');
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@import url('./popup-safari-fix.css');
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dialog {
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@ -42,7 +43,7 @@ dialog {
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display: flex;
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flex-direction: column;
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overflow: hidden;
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width: 100%;
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width: min(100%, 100vw);
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height: 100%;
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padding: 1px;
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}
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@ -0,0 +1,37 @@
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.poly_dialog {
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position: absolute;
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left: 0; right: 0;
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width: -moz-fit-content;
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width: -webkit-fit-content;
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width: fit-content;
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height: -moz-fit-content;
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height: -webkit-fit-content;
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height: fit-content;
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margin: auto;
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border: solid;
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padding: 1em;
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background: white;
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color: black;
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display: block;
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}
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.poly_dialog:not([open]) {
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display: none;
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}
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.poly_dialog + .backdrop {
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position: fixed;
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top: 0; right: 0; bottom: 0; left: 0;
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background: rgba(0,0,0,0.1);
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}
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._poly_dialog_overlay {
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position: fixed;
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top: 0; right: 0; bottom: 0; left: 0;
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}
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.poly_dialog.fixed {
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position: fixed;
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top: 50%;
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transform: translate(0, -50%);
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}
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@ -0,0 +1,858 @@
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// nb. This is for IE10 and lower _only_.
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var supportCustomEvent = window.CustomEvent;
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if (!supportCustomEvent || typeof supportCustomEvent === 'object') {
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supportCustomEvent = function CustomEvent(event, x) {
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x = x || {};
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var ev = document.createEvent('CustomEvent');
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ev.initCustomEvent(event, !!x.bubbles, !!x.cancelable, x.detail || null);
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return ev;
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};
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supportCustomEvent.prototype = window.Event.prototype;
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}
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/**
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* Dispatches the passed event to both an "on<type>" handler as well as via the
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* normal dispatch operation. Does not bubble.
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*
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* @param {!EventTarget} target
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* @param {!Event} event
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* @return {boolean}
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*/
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function safeDispatchEvent(target, event) {
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var check = 'on' + event.type.toLowerCase();
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if (typeof target[check] === 'function') {
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target[check](event);
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}
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return target.dispatchEvent(event);
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}
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/**
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* @param {Element} el to check for stacking context
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* @return {boolean} whether this el or its parents creates a stacking context
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*/
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function createsStackingContext(el) {
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while (el && el !== document.body) {
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var s = window.getComputedStyle(el);
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var invalid = function(k, ok) {
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return !(s[k] === undefined || s[k] === ok);
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};
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if (s.opacity < 1 ||
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invalid('zIndex', 'auto') ||
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invalid('transform', 'none') ||
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invalid('mixBlendMode', 'normal') ||
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invalid('filter', 'none') ||
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invalid('perspective', 'none') ||
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s['isolation'] === 'isolate' ||
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s.position === 'fixed' ||
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s.webkitOverflowScrolling === 'touch') {
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return true;
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}
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el = el.parentElement;
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}
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return false;
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}
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/**
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* Finds the nearest <dialog> from the passed element.
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*
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* @param {Element} el to search from
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* @return {HTMLDialogElement} dialog found
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*/
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function findNearestDialog(el) {
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while (el) {
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if (el.localName === 'dialog') {
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return /** @type {HTMLDialogElement} */ (el);
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}
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if (el.parentElement) {
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el = el.parentElement;
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} else if (el.parentNode) {
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el = el.parentNode.host;
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} else {
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el = null;
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}
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}
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return null;
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}
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/**
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* Blur the specified element, as long as it's not the HTML body element.
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* This works around an IE9/10 bug - blurring the body causes Windows to
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* blur the whole application.
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*
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* @param {Element} el to blur
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*/
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function safeBlur(el) {
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// Find the actual focused element when the active element is inside a shadow root
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while (el && el.shadowRoot && el.shadowRoot.activeElement) {
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el = el.shadowRoot.activeElement;
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}
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if (el && el.blur && el !== document.body) {
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el.blur();
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}
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}
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/**
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* @param {!NodeList} nodeList to search
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* @param {Node} node to find
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* @return {boolean} whether node is inside nodeList
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*/
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function inNodeList(nodeList, node) {
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for (var i = 0; i < nodeList.length; ++i) {
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if (nodeList[i] === node) {
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return true;
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}
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}
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return false;
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}
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/**
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* @param {HTMLFormElement} el to check
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* @return {boolean} whether this form has method="dialog"
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*/
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function isFormMethodDialog(el) {
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if (!el || !el.hasAttribute('method')) {
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return false;
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}
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return el.getAttribute('method').toLowerCase() === 'dialog';
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}
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/**
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* @param {!DocumentFragment|!Element} hostElement
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* @return {?Element}
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*/
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function findFocusableElementWithin(hostElement) {
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// Note that this is 'any focusable area'. This list is probably not exhaustive, but the
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// alternative involves stepping through and trying to focus everything.
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var opts = ['button', 'input', 'keygen', 'select', 'textarea'];
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var query = opts.map(function(el) {
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return el + ':not([disabled])';
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});
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// TODO(samthor): tabindex values that are not numeric are not focusable.
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query.push('[tabindex]:not([disabled]):not([tabindex=""])'); // tabindex != "", not disabled
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var target = hostElement.querySelector(query.join(', '));
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if (!target && 'attachShadow' in Element.prototype) {
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// If we haven't found a focusable target, see if the host element contains an element
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// which has a shadowRoot.
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// Recursively search for the first focusable item in shadow roots.
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var elems = hostElement.querySelectorAll('*');
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for (var i = 0; i < elems.length; i++) {
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if (elems[i].tagName && elems[i].shadowRoot) {
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target = findFocusableElementWithin(elems[i].shadowRoot);
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if (target) {
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break;
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}
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}
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}
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}
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return target;
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}
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/**
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* Determines if an element is attached to the DOM.
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* @param {Element} element to check
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* @return {boolean} whether the element is in DOM
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*/
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function isConnected(element) {
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return element.isConnected || document.body.contains(element);
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}
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/**
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* @param {!Event} event
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* @return {?Element}
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*/
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function findFormSubmitter(event) {
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if (event.submitter) {
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return event.submitter;
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}
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var form = event.target;
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if (!(form instanceof HTMLFormElement)) {
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return null;
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}
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var submitter = dialogPolyfill.formSubmitter;
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if (!submitter) {
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var target = event.target;
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var root = ('getRootNode' in target && target.getRootNode() || document);
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submitter = root.activeElement;
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}
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if (!submitter || submitter.form !== form) {
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return null;
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}
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return submitter;
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}
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/**
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* @param {!Event} event
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*/
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function maybeHandleSubmit(event) {
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if (event.defaultPrevented) {
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return;
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}
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var form = /** @type {!HTMLFormElement} */ (event.target);
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// We'd have a value if we clicked on an imagemap.
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var value = dialogPolyfill.imagemapUseValue;
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var submitter = findFormSubmitter(event);
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if (value === null && submitter) {
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value = submitter.value;
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}
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// There should always be a dialog as this handler is added specifically on them, but check just
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// in case.
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var dialog = findNearestDialog(form);
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if (!dialog) {
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return;
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}
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// Prefer formmethod on the button.
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var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
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if (formmethod !== 'dialog') {
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return;
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}
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event.preventDefault();
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if (value != null) {
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// nb. we explicitly check against null/undefined
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dialog.close(value);
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} else {
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dialog.close();
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}
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}
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/**
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* @param {!HTMLDialogElement} dialog to upgrade
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* @constructor
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*/
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function dialogPolyfillInfo(dialog) {
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this.dialog_ = dialog;
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this.replacedStyleTop_ = false;
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this.openAsModal_ = false;
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// Set a11y role. Browsers that support dialog implicitly know this already.
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if (!dialog.hasAttribute('role')) {
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dialog.setAttribute('role', 'dialog');
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}
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dialog.show = this.show.bind(this);
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dialog.showModal = this.showModal.bind(this);
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dialog.close = this.close.bind(this);
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dialog.addEventListener('submit', maybeHandleSubmit, false);
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if (!('returnValue' in dialog)) {
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dialog.returnValue = '';
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}
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if ('MutationObserver' in window) {
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var mo = new MutationObserver(this.maybeHideModal.bind(this));
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mo.observe(dialog, {attributes: true, attributeFilter: ['open']});
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} else {
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// IE10 and below support. Note that DOMNodeRemoved etc fire _before_ removal. They also
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// seem to fire even if the element was removed as part of a parent removal. Use the removed
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// events to force downgrade (useful if removed/immediately added).
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var removed = false;
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var cb = function() {
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removed ? this.downgradeModal() : this.maybeHideModal();
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removed = false;
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}.bind(this);
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var timeout;
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var delayModel = function(ev) {
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if (ev.target !== dialog) { return; } // not for a child element
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var cand = 'DOMNodeRemoved';
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removed |= (ev.type.substr(0, cand.length) === cand);
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window.clearTimeout(timeout);
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timeout = window.setTimeout(cb, 0);
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};
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['DOMAttrModified', 'DOMNodeRemoved', 'DOMNodeRemovedFromDocument'].forEach(function(name) {
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dialog.addEventListener(name, delayModel);
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});
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}
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// Note that the DOM is observed inside DialogManager while any dialog
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// is being displayed as a modal, to catch modal removal from the DOM.
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Object.defineProperty(dialog, 'open', {
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set: this.setOpen.bind(this),
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get: dialog.hasAttribute.bind(dialog, 'open')
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});
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this.backdrop_ = document.createElement('div');
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this.backdrop_.className = 'backdrop';
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this.backdrop_.addEventListener('mouseup' , this.backdropMouseEvent_.bind(this));
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this.backdrop_.addEventListener('mousedown', this.backdropMouseEvent_.bind(this));
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this.backdrop_.addEventListener('click' , this.backdropMouseEvent_.bind(this));
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}
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dialogPolyfillInfo.prototype = /** @type {HTMLDialogElement.prototype} */ ({
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get dialog() {
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return this.dialog_;
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},
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/**
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* Maybe remove this dialog from the modal top layer. This is called when
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* a modal dialog may no longer be tenable, e.g., when the dialog is no
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* longer open or is no longer part of the DOM.
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*/
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maybeHideModal: function() {
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if (this.dialog_.hasAttribute('open') && isConnected(this.dialog_)) { return; }
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this.downgradeModal();
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},
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/**
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* Remove this dialog from the modal top layer, leaving it as a non-modal.
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*/
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downgradeModal: function() {
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if (!this.openAsModal_) { return; }
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this.openAsModal_ = false;
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this.dialog_.style.zIndex = '';
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// This won't match the native <dialog> exactly because if the user set top on a centered
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// polyfill dialog, that top gets thrown away when the dialog is closed. Not sure it's
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// possible to polyfill this perfectly.
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if (this.replacedStyleTop_) {
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this.dialog_.style.top = '';
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this.replacedStyleTop_ = false;
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}
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// Clear the backdrop and remove from the manager.
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this.backdrop_.parentNode && this.backdrop_.parentNode.removeChild(this.backdrop_);
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dialogPolyfill.dm.removeDialog(this);
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},
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/**
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* @param {boolean} value whether to open or close this dialog
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*/
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setOpen: function(value) {
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if (value) {
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this.dialog_.hasAttribute('open') || this.dialog_.setAttribute('open', '');
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} else {
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this.dialog_.removeAttribute('open');
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this.maybeHideModal(); // nb. redundant with MutationObserver
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}
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},
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/**
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* Handles mouse events ('mouseup', 'mousedown', 'click') on the fake .backdrop element, redirecting them as if
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* they were on the dialog itself.
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*
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* @param {!Event} e to redirect
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*/
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backdropMouseEvent_: function(e) {
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if (!this.dialog_.hasAttribute('tabindex')) {
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// Clicking on the backdrop should move the implicit cursor, even if dialog cannot be
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// focused. Create a fake thing to focus on. If the backdrop was _before_ the dialog, this
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// would not be needed - clicks would move the implicit cursor there.
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var fake = document.createElement('div');
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this.dialog_.insertBefore(fake, this.dialog_.firstChild);
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fake.tabIndex = -1;
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fake.focus();
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this.dialog_.removeChild(fake);
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} else {
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this.dialog_.focus();
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}
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var redirectedEvent = document.createEvent('MouseEvents');
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redirectedEvent.initMouseEvent(e.type, e.bubbles, e.cancelable, window,
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e.detail, e.screenX, e.screenY, e.clientX, e.clientY, e.ctrlKey,
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e.altKey, e.shiftKey, e.metaKey, e.button, e.relatedTarget);
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this.dialog_.dispatchEvent(redirectedEvent);
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e.stopPropagation();
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},
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/**
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* Focuses on the first focusable element within the dialog. This will always blur the current
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* focus, even if nothing within the dialog is found.
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*/
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focus_: function() {
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// Find element with `autofocus` attribute, or fall back to the first form/tabindex control.
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var target = this.dialog_.querySelector('[autofocus]:not([disabled])');
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if (!target && this.dialog_.tabIndex >= 0) {
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target = this.dialog_;
|
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}
|
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if (!target) {
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target = findFocusableElementWithin(this.dialog_);
|
||||
}
|
||||
safeBlur(document.activeElement);
|
||||
target && target.focus();
|
||||
},
|
||||
|
||||
/**
|
||||
* Sets the zIndex for the backdrop and dialog.
|
||||
*
|
||||
* @param {number} dialogZ
|
||||
* @param {number} backdropZ
|
||||
*/
|
||||
updateZIndex: function(dialogZ, backdropZ) {
|
||||
if (dialogZ < backdropZ) {
|
||||
throw new Error('dialogZ should never be < backdropZ');
|
||||
}
|
||||
this.dialog_.style.zIndex = dialogZ;
|
||||
this.backdrop_.style.zIndex = backdropZ;
|
||||
},
|
||||
|
||||
/**
|
||||
* Shows the dialog. If the dialog is already open, this does nothing.
|
||||
*/
|
||||
show: function() {
|
||||
if (!this.dialog_.open) {
|
||||
this.setOpen(true);
|
||||
this.focus_();
|
||||
}
|
||||
},
|
||||
|
||||
/**
|
||||
* Show this dialog modally.
|
||||
*/
|
||||
showModal: function() {
|
||||
if (this.dialog_.hasAttribute('open')) {
|
||||
throw new Error('Failed to execute \'showModal\' on dialog: The element is already open, and therefore cannot be opened modally.');
|
||||
}
|
||||
if (!isConnected(this.dialog_)) {
|
||||
throw new Error('Failed to execute \'showModal\' on dialog: The element is not in a Document.');
|
||||
}
|
||||
if (!dialogPolyfill.dm.pushDialog(this)) {
|
||||
throw new Error('Failed to execute \'showModal\' on dialog: There are too many open modal dialogs.');
|
||||
}
|
||||
|
||||
if (createsStackingContext(this.dialog_.parentElement)) {
|
||||
console.warn('A dialog is being shown inside a stacking context. ' +
|
||||
'This may cause it to be unusable. For more information, see this link: ' +
|
||||
'https://github.com/GoogleChrome/dialog-polyfill/#stacking-context');
|
||||
}
|
||||
|
||||
this.setOpen(true);
|
||||
this.openAsModal_ = true;
|
||||
|
||||
// Optionally center vertically, relative to the current viewport.
|
||||
if (dialogPolyfill.needsCentering(this.dialog_)) {
|
||||
dialogPolyfill.reposition(this.dialog_);
|
||||
this.replacedStyleTop_ = true;
|
||||
} else {
|
||||
this.replacedStyleTop_ = false;
|
||||
}
|
||||
|
||||
// Insert backdrop.
|
||||
this.dialog_.parentNode.insertBefore(this.backdrop_, this.dialog_.nextSibling);
|
||||
|
||||
// Focus on whatever inside the dialog.
|
||||
this.focus_();
|
||||
},
|
||||
|
||||
/**
|
||||
* Closes this HTMLDialogElement. This is optional vs clearing the open
|
||||
* attribute, however this fires a 'close' event.
|
||||
*
|
||||
* @param {string=} opt_returnValue to use as the returnValue
|
||||
*/
|
||||
close: function(opt_returnValue) {
|
||||
if (!this.dialog_.hasAttribute('open')) {
|
||||
throw new Error('Failed to execute \'close\' on dialog: The element does not have an \'open\' attribute, and therefore cannot be closed.');
|
||||
}
|
||||
this.setOpen(false);
|
||||
|
||||
// Leave returnValue untouched in case it was set directly on the element
|
||||
if (opt_returnValue !== undefined) {
|
||||
this.dialog_.returnValue = opt_returnValue;
|
||||
}
|
||||
|
||||
// Triggering "close" event for any attached listeners on the <dialog>.
|
||||
var closeEvent = new supportCustomEvent('close', {
|
||||
bubbles: false,
|
||||
cancelable: false
|
||||
});
|
||||
safeDispatchEvent(this.dialog_, closeEvent);
|
||||
}
|
||||
|
||||
});
|
||||
|
||||
var dialogPolyfill = {};
|
||||
|
||||
dialogPolyfill.reposition = function(element) {
|
||||
var scrollTop = document.body.scrollTop || document.documentElement.scrollTop;
|
||||
var topValue = scrollTop + (window.innerHeight - element.offsetHeight) / 2;
|
||||
element.style.top = Math.max(scrollTop, topValue) + 'px';
|
||||
};
|
||||
|
||||
dialogPolyfill.isInlinePositionSetByStylesheet = function(element) {
|
||||
for (var i = 0; i < document.styleSheets.length; ++i) {
|
||||
var styleSheet = document.styleSheets[i];
|
||||
var cssRules = null;
|
||||
// Some browsers throw on cssRules.
|
||||
try {
|
||||
cssRules = styleSheet.cssRules;
|
||||
} catch (e) {}
|
||||
if (!cssRules) { continue; }
|
||||
for (var j = 0; j < cssRules.length; ++j) {
|
||||
var rule = cssRules[j];
|
||||
var selectedNodes = null;
|
||||
// Ignore errors on invalid selector texts.
|
||||
try {
|
||||
selectedNodes = document.querySelectorAll(rule.selectorText);
|
||||
} catch(e) {}
|
||||
if (!selectedNodes || !inNodeList(selectedNodes, element)) {
|
||||
continue;
|
||||
}
|
||||
var cssTop = rule.style.getPropertyValue('top');
|
||||
var cssBottom = rule.style.getPropertyValue('bottom');
|
||||
if ((cssTop && cssTop !== 'auto') || (cssBottom && cssBottom !== 'auto')) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
return false;
|
||||
};
|
||||
|
||||
dialogPolyfill.needsCentering = function(dialog) {
|
||||
var computedStyle = window.getComputedStyle(dialog);
|
||||
if (computedStyle.position !== 'absolute') {
|
||||
return false;
|
||||
}
|
||||
|
||||
// We must determine whether the top/bottom specified value is non-auto. In
|
||||
// WebKit/Blink, checking computedStyle.top == 'auto' is sufficient, but
|
||||
// Firefox returns the used value. So we do this crazy thing instead: check
|
||||
// the inline style and then go through CSS rules.
|
||||
if ((dialog.style.top !== 'auto' && dialog.style.top !== '') ||
|
||||
(dialog.style.bottom !== 'auto' && dialog.style.bottom !== '')) {
|
||||
return false;
|
||||
}
|
||||
return !dialogPolyfill.isInlinePositionSetByStylesheet(dialog);
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {!Element} element to force upgrade
|
||||
*/
|
||||
dialogPolyfill.forceRegisterDialog = function(element) {
|
||||
if (window.HTMLDialogElement || element.showModal) {
|
||||
console.warn('This browser already supports <dialog>, the polyfill ' +
|
||||
'may not work correctly', element);
|
||||
}
|
||||
if (element.localName !== 'dialog') {
|
||||
throw new Error('Failed to register dialog: The element is not a dialog.');
|
||||
}
|
||||
new dialogPolyfillInfo(/** @type {!HTMLDialogElement} */ (element));
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {!Element} element to upgrade, if necessary
|
||||
*/
|
||||
dialogPolyfill.registerDialog = function(element) {
|
||||
if (!element.showModal) {
|
||||
dialogPolyfill.forceRegisterDialog(element);
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* @constructor
|
||||
*/
|
||||
dialogPolyfill.DialogManager = function() {
|
||||
/** @type {!Array<!dialogPolyfillInfo>} */
|
||||
this.pendingDialogStack = [];
|
||||
|
||||
var checkDOM = this.checkDOM_.bind(this);
|
||||
|
||||
// The overlay is used to simulate how a modal dialog blocks the document.
|
||||
// The blocking dialog is positioned on top of the overlay, and the rest of
|
||||
// the dialogs on the pending dialog stack are positioned below it. In the
|
||||
// actual implementation, the modal dialog stacking is controlled by the
|
||||
// top layer, where z-index has no effect.
|
||||
this.overlay = document.createElement('div');
|
||||
this.overlay.className = '_poly_dialog_overlay';
|
||||
this.overlay.addEventListener('click', function(e) {
|
||||
this.forwardTab_ = undefined;
|
||||
e.stopPropagation();
|
||||
checkDOM([]); // sanity-check DOM
|
||||
}.bind(this));
|
||||
|
||||
this.handleKey_ = this.handleKey_.bind(this);
|
||||
this.handleFocus_ = this.handleFocus_.bind(this);
|
||||
|
||||
this.zIndexLow_ = 100000;
|
||||
this.zIndexHigh_ = 100000 + 150;
|
||||
|
||||
this.forwardTab_ = undefined;
|
||||
|
||||
if ('MutationObserver' in window) {
|
||||
this.mo_ = new MutationObserver(function(records) {
|
||||
var removed = [];
|
||||
records.forEach(function(rec) {
|
||||
for (var i = 0, c; c = rec.removedNodes[i]; ++i) {
|
||||
if (!(c instanceof Element)) {
|
||||
continue;
|
||||
} else if (c.localName === 'dialog') {
|
||||
removed.push(c);
|
||||
}
|
||||
removed = removed.concat(c.querySelectorAll('dialog'));
|
||||
}
|
||||
});
|
||||
removed.length && checkDOM(removed);
|
||||
});
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* Called on the first modal dialog being shown. Adds the overlay and related
|
||||
* handlers.
|
||||
*/
|
||||
dialogPolyfill.DialogManager.prototype.blockDocument = function() {
|
||||
document.documentElement.addEventListener('focus', this.handleFocus_, true);
|
||||
document.addEventListener('keydown', this.handleKey_);
|
||||
this.mo_ && this.mo_.observe(document, {childList: true, subtree: true});
|
||||
};
|
||||
|
||||
/**
|
||||
* Called on the first modal dialog being removed, i.e., when no more modal
|
||||
* dialogs are visible.
|
||||
*/
|
||||
dialogPolyfill.DialogManager.prototype.unblockDocument = function() {
|
||||
document.documentElement.removeEventListener('focus', this.handleFocus_, true);
|
||||
document.removeEventListener('keydown', this.handleKey_);
|
||||
this.mo_ && this.mo_.disconnect();
|
||||
};
|
||||
|
||||
/**
|
||||
* Updates the stacking of all known dialogs.
|
||||
*/
|
||||
dialogPolyfill.DialogManager.prototype.updateStacking = function() {
|
||||
var zIndex = this.zIndexHigh_;
|
||||
|
||||
for (var i = 0, dpi; dpi = this.pendingDialogStack[i]; ++i) {
|
||||
dpi.updateZIndex(--zIndex, --zIndex);
|
||||
if (i === 0) {
|
||||
this.overlay.style.zIndex = --zIndex;
|
||||
}
|
||||
}
|
||||
|
||||
// Make the overlay a sibling of the dialog itself.
|
||||
var last = this.pendingDialogStack[0];
|
||||
if (last) {
|
||||
var p = last.dialog.parentNode || document.body;
|
||||
p.appendChild(this.overlay);
|
||||
} else if (this.overlay.parentNode) {
|
||||
this.overlay.parentNode.removeChild(this.overlay);
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {Element} candidate to check if contained or is the top-most modal dialog
|
||||
* @return {boolean} whether candidate is contained in top dialog
|
||||
*/
|
||||
dialogPolyfill.DialogManager.prototype.containedByTopDialog_ = function(candidate) {
|
||||
while (candidate = findNearestDialog(candidate)) {
|
||||
for (var i = 0, dpi; dpi = this.pendingDialogStack[i]; ++i) {
|
||||
if (dpi.dialog === candidate) {
|
||||
return i === 0; // only valid if top-most
|
||||
}
|
||||
}
|
||||
candidate = candidate.parentElement;
|
||||
}
|
||||
return false;
|
||||
};
|
||||
|
||||
dialogPolyfill.DialogManager.prototype.handleFocus_ = function(event) {
|
||||
var target = event.composedPath ? event.composedPath()[0] : event.target;
|
||||
|
||||
if (this.containedByTopDialog_(target)) { return; }
|
||||
|
||||
if (document.activeElement === document.documentElement) { return; }
|
||||
|
||||
event.preventDefault();
|
||||
event.stopPropagation();
|
||||
safeBlur(/** @type {Element} */ (target));
|
||||
|
||||
if (this.forwardTab_ === undefined) { return; } // move focus only from a tab key
|
||||
|
||||
var dpi = this.pendingDialogStack[0];
|
||||
var dialog = dpi.dialog;
|
||||
var position = dialog.compareDocumentPosition(target);
|
||||
if (position & Node.DOCUMENT_POSITION_PRECEDING) {
|
||||
if (this.forwardTab_) {
|
||||
// forward
|
||||
dpi.focus_();
|
||||
} else if (target !== document.documentElement) {
|
||||
// backwards if we're not already focused on <html>
|
||||
document.documentElement.focus();
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
};
|
||||
|
||||
dialogPolyfill.DialogManager.prototype.handleKey_ = function(event) {
|
||||
this.forwardTab_ = undefined;
|
||||
if (event.keyCode === 27) {
|
||||
event.preventDefault();
|
||||
event.stopPropagation();
|
||||
var cancelEvent = new supportCustomEvent('cancel', {
|
||||
bubbles: false,
|
||||
cancelable: true
|
||||
});
|
||||
var dpi = this.pendingDialogStack[0];
|
||||
if (dpi && safeDispatchEvent(dpi.dialog, cancelEvent)) {
|
||||
dpi.dialog.close();
|
||||
}
|
||||
} else if (event.keyCode === 9) {
|
||||
this.forwardTab_ = !event.shiftKey;
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* Finds and downgrades any known modal dialogs that are no longer displayed. Dialogs that are
|
||||
* removed and immediately readded don't stay modal, they become normal.
|
||||
*
|
||||
* @param {!Array<!HTMLDialogElement>} removed that have definitely been removed
|
||||
*/
|
||||
dialogPolyfill.DialogManager.prototype.checkDOM_ = function(removed) {
|
||||
// This operates on a clone because it may cause it to change. Each change also calls
|
||||
// updateStacking, which only actually needs to happen once. But who removes many modal dialogs
|
||||
// at a time?!
|
||||
var clone = this.pendingDialogStack.slice();
|
||||
clone.forEach(function(dpi) {
|
||||
if (removed.indexOf(dpi.dialog) !== -1) {
|
||||
dpi.downgradeModal();
|
||||
} else {
|
||||
dpi.maybeHideModal();
|
||||
}
|
||||
});
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {!dialogPolyfillInfo} dpi
|
||||
* @return {boolean} whether the dialog was allowed
|
||||
*/
|
||||
dialogPolyfill.DialogManager.prototype.pushDialog = function(dpi) {
|
||||
var allowed = (this.zIndexHigh_ - this.zIndexLow_) / 2 - 1;
|
||||
if (this.pendingDialogStack.length >= allowed) {
|
||||
return false;
|
||||
}
|
||||
if (this.pendingDialogStack.unshift(dpi) === 1) {
|
||||
this.blockDocument();
|
||||
}
|
||||
this.updateStacking();
|
||||
return true;
|
||||
};
|
||||
|
||||
/**
|
||||
* @param {!dialogPolyfillInfo} dpi
|
||||
*/
|
||||
dialogPolyfill.DialogManager.prototype.removeDialog = function(dpi) {
|
||||
var index = this.pendingDialogStack.indexOf(dpi);
|
||||
if (index === -1) { return; }
|
||||
|
||||
this.pendingDialogStack.splice(index, 1);
|
||||
if (this.pendingDialogStack.length === 0) {
|
||||
this.unblockDocument();
|
||||
}
|
||||
this.updateStacking();
|
||||
};
|
||||
|
||||
dialogPolyfill.dm = new dialogPolyfill.DialogManager();
|
||||
dialogPolyfill.formSubmitter = null;
|
||||
dialogPolyfill.imagemapUseValue = null;
|
||||
|
||||
/**
|
||||
* Installs global handlers, such as click listers and native method overrides. These are needed
|
||||
* even if a no dialog is registered, as they deal with <form method="dialog">.
|
||||
*/
|
||||
if (window.HTMLDialogElement === undefined) {
|
||||
|
||||
/**
|
||||
* If HTMLFormElement translates method="DIALOG" into 'get', then replace the descriptor with
|
||||
* one that returns the correct value.
|
||||
*/
|
||||
var testForm = document.createElement('form');
|
||||
testForm.setAttribute('method', 'dialog');
|
||||
if (testForm.method !== 'dialog') {
|
||||
var methodDescriptor = Object.getOwnPropertyDescriptor(HTMLFormElement.prototype, 'method');
|
||||
if (methodDescriptor) {
|
||||
// nb. Some older iOS and older PhantomJS fail to return the descriptor. Don't do anything
|
||||
// and don't bother to update the element.
|
||||
var realGet = methodDescriptor.get;
|
||||
methodDescriptor.get = function() {
|
||||
if (isFormMethodDialog(this)) {
|
||||
return 'dialog';
|
||||
}
|
||||
return realGet.call(this);
|
||||
};
|
||||
var realSet = methodDescriptor.set;
|
||||
/** @this {HTMLElement} */
|
||||
methodDescriptor.set = function(v) {
|
||||
if (typeof v === 'string' && v.toLowerCase() === 'dialog') {
|
||||
return this.setAttribute('method', v);
|
||||
}
|
||||
return realSet.call(this, v);
|
||||
};
|
||||
Object.defineProperty(HTMLFormElement.prototype, 'method', methodDescriptor);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Global 'click' handler, to capture the <input type="submit"> or <button> element which has
|
||||
* submitted a <form method="dialog">. Needed as Safari and others don't report this inside
|
||||
* document.activeElement.
|
||||
*/
|
||||
document.addEventListener('click', function(ev) {
|
||||
dialogPolyfill.formSubmitter = null;
|
||||
dialogPolyfill.imagemapUseValue = null;
|
||||
if (ev.defaultPrevented) { return; } // e.g. a submit which prevents default submission
|
||||
|
||||
var target = /** @type {Element} */ (ev.target);
|
||||
if ('composedPath' in ev) {
|
||||
var path = ev.composedPath();
|
||||
target = path.shift() || target;
|
||||
}
|
||||
if (!target || !isFormMethodDialog(target.form)) { return; }
|
||||
|
||||
var valid = (target.type === 'submit' && ['button', 'input'].indexOf(target.localName) > -1);
|
||||
if (!valid) {
|
||||
if (!(target.localName === 'input' && target.type === 'image')) { return; }
|
||||
// this is a <input type="image">, which can submit forms
|
||||
dialogPolyfill.imagemapUseValue = ev.offsetX + ',' + ev.offsetY;
|
||||
}
|
||||
|
||||
var dialog = findNearestDialog(target);
|
||||
if (!dialog) { return; }
|
||||
|
||||
dialogPolyfill.formSubmitter = target;
|
||||
|
||||
}, false);
|
||||
|
||||
/**
|
||||
* Global 'submit' handler. This handles submits of `method="dialog"` which are invalid, i.e.,
|
||||
* outside a dialog. They get prevented.
|
||||
*/
|
||||
document.addEventListener('submit', function(ev) {
|
||||
var form = ev.target;
|
||||
var dialog = findNearestDialog(form);
|
||||
if (dialog) {
|
||||
return; // ignore, handle there
|
||||
}
|
||||
|
||||
var submitter = findFormSubmitter(ev);
|
||||
var formmethod = submitter && submitter.getAttribute('formmethod') || form.getAttribute('method');
|
||||
if (formmethod === 'dialog') {
|
||||
ev.preventDefault();
|
||||
}
|
||||
});
|
||||
|
||||
/**
|
||||
* Replace the native HTMLFormElement.submit() method, as it won't fire the
|
||||
* submit event and give us a chance to respond.
|
||||
*/
|
||||
var nativeFormSubmit = HTMLFormElement.prototype.submit;
|
||||
var replacementFormSubmit = function () {
|
||||
if (!isFormMethodDialog(this)) {
|
||||
return nativeFormSubmit.call(this);
|
||||
}
|
||||
var dialog = findNearestDialog(this);
|
||||
dialog && dialog.close();
|
||||
};
|
||||
HTMLFormElement.prototype.submit = replacementFormSubmit;
|
||||
}
|
||||
|
||||
export default dialogPolyfill;
|
||||
|
|
@ -1,3 +1,4 @@
|
|||
import dialogPolyfill from '../lib/dialog-polyfill.esm.js';
|
||||
import { shouldSendOnEnter } from './RossAscends-mods.js';
|
||||
import { power_user } from './power-user.js';
|
||||
import { removeFromArray, runAfterAnimation, uuidv4 } from './utils.js';
|
||||
|
|
@ -178,6 +179,10 @@ export class Popup {
|
|||
const template = document.querySelector('#popup_template');
|
||||
// @ts-ignore
|
||||
this.dlg = template.content.cloneNode(true).querySelector('.popup');
|
||||
if (!this.dlg.showModal) {
|
||||
this.dlg.classList.add('poly_dialog');
|
||||
dialogPolyfill.registerDialog(this.dlg);
|
||||
}
|
||||
this.body = this.dlg.querySelector('.popup-body');
|
||||
this.content = this.dlg.querySelector('.popup-content');
|
||||
this.mainInput = this.dlg.querySelector('.popup-input');
|
||||
|
|
|
|||
Loading…
Reference in New Issue