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class AlertElement extends HTMLElement { constructor() { super(); // Bindings this.close = this.close.bind(this); this.destroyCloseButton = this.destroyCloseButton.bind(this); this.createCloseButton = this.createCloseButton.bind(this); this.onMutation = this.onMutation.bind(this); this.observer = new MutationObserver(this.onMutation); this.observer.observe(this, { attributes: false, childList: true, subtree: true }); // Handle the fade in animation this.addEventListener('animationend', event => { if (event.animationName === 'joomla-alert-fade-in' && event.target === this) { this.dispatchEvent(new CustomEvent('joomla.alert.shown')); this.style.removeProperty('animationName'); } }); // Handle the fade out animation this.addEventListener('animationend', event => { if (event.animationName === 'joomla-alert-fade-out' && event.target === this) { this.dispatchEvent(new CustomEvent('joomla.alert.closed')); this.remove(); } }); } /* Attributes to monitor */ static get observedAttributes() { return ['type', 'role', 'dismiss', 'auto-dismiss', 'close-text']; } get type() { return this.getAttribute('type'); } set type(value) { this.setAttribute('type', value); } get role() { return this.getAttribute('role'); } set role(value) { this.setAttribute('role', value); } get closeText() { return this.getAttribute('close-text'); } set closeText(value) { this.setAttribute('close-text', value); } get dismiss() { return this.getAttribute('dismiss'); } set dismiss(value) { this.setAttribute('dismiss', value); } get autodismiss() { return this.getAttribute('auto-dismiss'); } set autodismiss(value) { this.setAttribute('auto-dismiss', value); } /* Lifecycle, element appended to the DOM */ connectedCallback() { this.dispatchEvent(new CustomEvent('joomla.alert.show')); this.style.animationName = 'joomla-alert-fade-in'; // Default to info if (!this.type || !['info', 'warning', 'danger', 'success'].includes(this.type)) { this.setAttribute('type', 'info'); } // Default to alert if (!this.role || !['alert', 'alertdialog'].includes(this.role)) { this.setAttribute('role', 'alert'); } // Hydrate the button if (this.firstElementChild && this.firstElementChild.tagName === 'BUTTON') { this.button = this.firstElementChild; if (this.button.classList.contains('joomla-alert--close')) { this.button.classList.add('joomla-alert--close'); } if (this.button.innerHTML === '') { this.button.innerHTML = '<span aria-hidden="true">×</span>'; } if (!this.button.hasAttribute('aria-label')) { this.button.setAttribute('aria-label', this.closeText); } } // Append button if (this.hasAttribute('dismiss') && !this.button) { this.createCloseButton(); } if (this.hasAttribute('auto-dismiss')) { this.autoDismiss(); } } /* Lifecycle, element removed from the DOM */ disconnectedCallback() { if (this.button) { this.button.removeEventListener('click', this.close); } this.observer.disconnect(); } /* Respond to attribute changes */ attributeChangedCallback(attr, oldValue, newValue) { switch (attr) { case 'type': if (!newValue || newValue && ['info', 'warning', 'danger', 'success'].indexOf(newValue) === -1) { this.type = 'info'; } break; case 'role': if (!newValue || newValue && ['alert', 'alertdialog'].indexOf(newValue) === -1) { this.role = 'alert'; } break; case 'dismiss': if ((!newValue || newValue === '') && (!oldValue || oldValue === '')) { if (this.button && !this.hasAttribute('dismiss')) { this.destroyCloseButton(); } else if (!this.button && this.hasAttribute('dismiss')) { this.createCloseButton(); } } else if (this.button && newValue === 'false') { this.destroyCloseButton(); } else if (!this.button && newValue !== 'false') { this.createCloseButton(); } break; case 'close-text': if (!newValue || newValue !== oldValue) { if (this.button) { this.button.setAttribute('aria-label', newValue); } } break; case 'auto-dismiss': this.autoDismiss(); break; } } /* Observe added elements */ onMutation(mutationsList) { // eslint-disable-next-line no-restricted-syntax for (const mutation of mutationsList) { if (mutation.type === 'childList') { if (mutation.addedNodes.length) { // Make sure that the button is always the first element if (this.button && this.firstElementChild !== this.button) { this.prepend(this.button); } } } } } /* Method to close the alert */ close() { this.dispatchEvent(new CustomEvent('joomla.alert.close')); this.style.animationName = 'joomla-alert-fade-out'; } /* Method to create the close button */ createCloseButton() { this.button = document.createElement('button'); this.button.setAttribute('type', 'button'); this.button.classList.add('joomla-alert--close'); this.button.innerHTML = '<span aria-hidden="true">×</span>'; this.button.setAttribute('aria-label', this.closeText); this.insertAdjacentElement('afterbegin', this.button); /* Add the required listener */ this.button.addEventListener('click', this.close); } /* Method to remove the close button */ destroyCloseButton() { if (this.button) { this.button.removeEventListener('click', this.close); this.button.parentNode.removeChild(this.button); this.button = null; } } /* Method to auto-dismiss */ autoDismiss() { const timer = parseInt(this.getAttribute('auto-dismiss'), 10); setTimeout(this.close, timer >= 10 ? timer : 3000); } } if (!customElements.get('joomla-alert')) { customElements.define('joomla-alert', AlertElement); } /** * @copyright (C) 2020 Open Source Matters, Inc. <https://www.joomla.org> * @license GNU General Public License version 2 or later; see LICENSE.txt */ /** * Returns the container of the Messages * * @param {string|HTMLElement} container The container * * @returns {HTMLElement} */ const getMessageContainer = container => { let messageContainer; if (container instanceof HTMLElement) { return container; } if (typeof container === 'undefined' || container && container === '#system-message-container') { messageContainer = document.getElementById('system-message-container'); } else { messageContainer = document.querySelector(container); } return messageContainer; }; /** * Render messages send via JSON * Used by some javascripts such as validate.js * * @param {object} messages JavaScript object containing the messages to render. * Example: * const messages = { * "message": ["This will be a green message", "So will this"], * "error": ["This will be a red message", "So will this"], * "info": ["This will be a blue message", "So will this"], * "notice": ["This will be same as info message", "So will this"], * "warning": ["This will be a orange message", "So will this"], * "my_custom_type": ["This will be same as info message", "So will this"] * }; * @param {string} selector The selector of the container where the message will be rendered * @param {bool} keepOld If we shall discard old messages * @param {int} timeout The milliseconds before the message self destruct * @return void */ Joomla.renderMessages = (messages, selector, keepOld, timeout) => { const messageContainer = getMessageContainer(selector); if (typeof keepOld === 'undefined' || keepOld && keepOld === false) { Joomla.removeMessages(messageContainer); } [].slice.call(Object.keys(messages)).forEach(type => { let alertClass = type; // Array of messages of this type const typeMessages = messages[type]; const messagesBox = document.createElement('joomla-alert'); if (['success', 'info', 'danger', 'warning'].indexOf(type) < 0) { alertClass = type === 'notice' ? 'info' : type; alertClass = type === 'message' ? 'success' : alertClass; alertClass = type === 'error' ? 'danger' : alertClass; alertClass = type === 'warning' ? 'warning' : alertClass; } messagesBox.setAttribute('type', alertClass); messagesBox.setAttribute('close-text', Joomla.Text._('JCLOSE')); messagesBox.setAttribute('dismiss', true); if (timeout && parseInt(timeout, 10) > 0) { messagesBox.setAttribute('auto-dismiss', timeout); } // Title const title = Joomla.Text._(type); // Skip titles with untranslated strings if (typeof title !== 'undefined') { const titleWrapper = document.createElement('div'); titleWrapper.className = 'alert-heading'; titleWrapper.innerHTML = Joomla.sanitizeHtml(`<span class="${type}"></span><span class="visually-hidden">${Joomla.Text._(type) ? Joomla.Text._(type) : type}</span>`); messagesBox.appendChild(titleWrapper); } // Add messages to the message box const messageWrapper = document.createElement('div'); messageWrapper.className = 'alert-wrapper'; typeMessages.forEach(typeMessage => { messageWrapper.innerHTML += Joomla.sanitizeHtml(`<div class="alert-message">${typeMessage}</div>`); }); messagesBox.appendChild(messageWrapper); messageContainer.appendChild(messagesBox); }); }; /** * Remove messages * * @param {element} container The element of the container of the message * to be removed * * @return {void} */ Joomla.removeMessages = container => { const messageContainer = getMessageContainer(container); const alerts = [].slice.call(messageContainer.querySelectorAll('joomla-alert')); if (alerts.length) { alerts.forEach(alert => { alert.close(); }); } }; document.addEventListener('DOMContentLoaded', () => { const messages = Joomla.getOptions('joomla.messages'); if (messages) { Object.keys(messages).map(message => Joomla.renderMessages(messages[message], undefined, true, undefined)); } });