// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Contain the logic for modals.
*
* @module core/modal
* @copyright 2016 Ryan Wyllie <ryan@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
import $ from 'jquery';
import * as Templates from 'core/templates';
import * as Notification from 'core/notification';
import * as KeyCodes from 'core/key_codes';
import ModalBackdrop from 'core/modal_backdrop';
import ModalEvents from 'core/modal_events';
import * as ModalRegistry from 'core/modal_registry';
import Pending from 'core/pending';
import * as CustomEvents from 'core/custom_interaction_events';
import * as FilterEvents from 'core_filters/events';
import * as FocusLock from 'core/local/aria/focuslock';
import * as Aria from 'core/aria';
import * as Fullscreen from 'core/fullscreen';
import {removeToastRegion} from './toast';
/**
* A configuration to provide to the modal.
*
* @typedef {Object} ModalConfig
*
* @property {string} [type] The type of modal to create.
* @property {string|Promise<string>} [title] The title of the modal.
* @property {string|Promise<string>} [body] The body of the modal.
* @property {string|Promise<string>} [footer] The footer of the modal.
* @property {boolean} [show=false] Whether to show the modal immediately.
* @property {boolean} [scrollable=true] Whether the modal should be scrollable.
* @property {boolean} [removeOnClose=true] Whether the modal should be removed from the DOM when it is closed.
* @property {Element|jQuery} [returnElement] The element to focus when closing the modal.
* @property {boolean} [large=false] Whether the modal should be a large modal.
* @property {boolean} [isVerticallyCentered=false] Whether the modal should be vertically centered.
* @property {object} [buttons={}] The buttons to display in the footer as a key => title pair.
*/
const SELECTORS = {
CONTAINER: '[data-region="modal-container"]',
MODAL: '[data-region="modal"]',
HEADER: '[data-region="header"]',
TITLE: '[data-region="title"]',
BODY: '[data-region="body"]',
FOOTER: '[data-region="footer"]',
HIDE: '[data-action="hide"]',
DIALOG: '[role=dialog]',
FORM: 'form',
MENU_BAR: '[role=menubar]',
HAS_Z_INDEX: '.moodle-has-zindex',
CAN_RECEIVE_FOCUS: 'input:not([type="hidden"]), a[href], button, textarea, select, [tabindex]',
};
const TEMPLATES = {
LOADING: 'core/loading',
BACKDROP: 'core/modal_backdrop',
};
export default class Modal {
/** @var {string} The type of modal */
static TYPE = 'default';
/** @var {string} The template to use for this modal */
static TEMPLATE = 'core/modal';
/** @var {Promise} Module singleton for the backdrop to be reused by all Modal instances */
static backdropPromise = null;
/**
* @var {Number} A counter that gets incremented for each modal created.
* This can be used to generate unique values for the modals.
*/
static modalCounter = 0;
/**
* Constructor for the Modal.
*
* @param {HTMLElement} root The HTMLElement at the root of the Modal content
*/
constructor(root) {
this.root = $(root);
this.modal = this.root.find(SELECTORS.MODAL);
this.header = this.modal.find(SELECTORS.HEADER);
this.headerPromise = $.Deferred();
this.title = this.header.find(SELECTORS.TITLE);
this.titlePromise = $.Deferred();
this.body = this.modal.find(SELECTORS.BODY);
this.bodyPromise = $.Deferred();
this.footer = this.modal.find(SELECTORS.FOOTER);
this.footerPromise = $.Deferred();
this.hiddenSiblings = [];
this.isAttached = false;
this.bodyJS = null;
this.footerJS = null;
this.modalCount = Modal.modalCounter++;
this.attachmentPoint = document.createElement('div');
document.body.append(this.attachmentPoint);
this.focusOnClose = null;
if (!this.root.is(SELECTORS.CONTAINER)) {
Notification.exception({message: 'Element is not a modal container'});
}
if (!this.modal.length) {
Notification.exception({message: 'Container does not contain a modal'});
}
if (!this.header.length) {
Notification.exception({message: 'Modal is missing a header region'});
}
if (!this.title.length) {
Notification.exception({message: 'Modal header is missing a title region'});
}
if (!this.body.length) {
Notification.exception({message: 'Modal is missing a body region'});
}
if (!this.footer.length) {
Notification.exception({message: 'Modal is missing a footer region'});
}
this.registerEventListeners();
}
/**
* Register a modal with the legacy modal registry.
*
* This is provided to allow backwards-compatibility with existing code that uses the legacy modal registry.
* It is not necessary to register modals for code only present in Moodle 4.3 and later.
*/
static registerModalType() {
if (!this.TYPE) {
throw new Error(`Unknown modal type`, this);
}
if (!this.TEMPLATE) {
throw new Error(`Unknown modal template`, this);
}
ModalRegistry.register(
this.TYPE,
this,
this.TEMPLATE,
);
}
/**
* Create a new modal using the ModalFactory.
* This is a shortcut to creating the modal.
* Create a new modal using the supplied configuration.
*
* @param {ModalConfig} modalConfig
* @returns {Promise<Modal>}
*/
static async create(modalConfig = {}) {
const pendingModalPromise = new Pending('core/modal_factory:create');
modalConfig.type = this.TYPE;
const templateName = this._getTemplateName(modalConfig);
const templateContext = modalConfig.templateContext || {};
const {html} = await Templates.renderForPromise(templateName, templateContext);
const modal = new this(html);
modal.configure(modalConfig);
pendingModalPromise.resolve();
return modal;
}
/**
* A helper to get the template name for this modal.
*
* @param {ModalConfig} modalConfig
* @returns {string}
* @protected
*/
static _getTemplateName(modalConfig) {
if (modalConfig.template) {
return modalConfig.template;
}
if (this.TEMPLATE) {
return this.TEMPLATE;
}
if (ModalRegistry.has(this.TYPE)) {
// Note: This is provided as an interim backwards-compatability layer and will be removed four releases after 4.3.
window.console.warning(
'Use of core/modal_registry is deprecated. ' +
'Please define your modal template in a new static TEMPLATE property on your modal class.',
);
const config = ModalRegistry.get(this.TYPE);
return config.template;
}
throw new Error(`Unable to determine template name for modal ${this.TYPE}`);
}
/**
* Configure the modal.
*
* @param {ModalConfig} param0 The configuration options
*/
configure({
show = false,
large = false,
isVerticallyCentered = false,
removeOnClose = false,
scrollable = true,
returnElement,
title,
body,
footer,
buttons = {},
} = {}) {
if (large) {
this.setLarge();
}
if (isVerticallyCentered) {
this.setVerticallyCentered();
}
// If configured remove the modal when hiding it.
// Ideally this should be true, but we need to identify places that this breaks first.
this.setRemoveOnClose(removeOnClose);
this.setReturnElement(returnElement);
this.setScrollable(scrollable);
if (title !== undefined) {
this.setTitle(title);
}
if (body !== undefined) {
this.setBody(body);
}
if (footer !== undefined) {
this.setFooter(footer);
}
Object.entries(buttons).forEach(([key, value]) => this.setButtonText(key, value));
// If configured show the modal.
if (show) {
this.show();
}
}
/**
* Attach the modal to the correct part of the page.
*
* If it hasn't already been added it runs any
* javascript that has been cached until now.
*
* @method attachToDOM
*/
attachToDOM() {
this.getAttachmentPoint().append(this.root);
if (this.isAttached) {
return;
}
FocusLock.trapFocus(this.root[0]);
// If we'd cached any JS then we can run it how that the modal is
// attached to the DOM.
if (this.bodyJS) {
Templates.runTemplateJS(this.bodyJS);
this.bodyJS = null;
}
if (this.footerJS) {
Templates.runTemplateJS(this.footerJS);
this.footerJS = null;
}
this.isAttached = true;
}
/**
* Count the number of other visible modals (not including this one).
*
* @method countOtherVisibleModals
* @return {int}
*/
countOtherVisibleModals() {
let count = 0;
$('body').find(SELECTORS.CONTAINER).each((index, element) => {
element = $(element);
// If we haven't found ourself and the element is visible.
if (!this.root.is(element) && element.hasClass('show')) {
count++;
}
});
return count;
}
/**
* Get the modal backdrop.
*
* @method getBackdrop
* @return {object} jQuery promise
*/
getBackdrop() {
if (!Modal.backdropPromise) {
Modal.backdropPromise = Templates.render(TEMPLATES.BACKDROP, {})
.then((html) => new ModalBackdrop($(html)))
.catch(Notification.exception);
}
return Modal.backdropPromise;
}
/**
* Get the root element of this modal.
*
* @method getRoot
* @return {object} jQuery object
*/
getRoot() {
return this.root;
}
/**
* Get the modal element of this modal.
*
* @method getModal
* @return {object} jQuery object
*/
getModal() {
return this.modal;
}
/**
* Get the modal title element.
*
* @method getTitle
* @return {object} jQuery object
*/
getTitle() {
return this.title;
}
/**
* Get the modal body element.
*
* @method getBody
* @return {object} jQuery object
*/
getBody() {
return this.body;
}
/**
* Get the modal footer element.
*
* @method getFooter
* @return {object} jQuery object
*/
getFooter() {
return this.footer;
}
/**
* Get a promise resolving to the title region.
*
* @method getTitlePromise
* @return {Promise}
*/
getTitlePromise() {
return this.titlePromise;
}
/**
* Get a promise resolving to the body region.
*
* @method getBodyPromise
* @return {object} jQuery object
*/
getBodyPromise() {
return this.bodyPromise;
}
/**
* Get a promise resolving to the footer region.
*
* @method getFooterPromise
* @return {object} jQuery object
*/
getFooterPromise() {
return this.footerPromise;
}
/**
* Get the unique modal count.
*
* @method getModalCount
* @return {int}
*/
getModalCount() {
return this.modalCount;
}
/**
* Set the modal title element.
*
* This method is overloaded to take either a string value for the title or a jQuery promise that is resolved with
* HTML most commonly from a Str.get_string call.
*
* @method setTitle
* @param {(string|object)} value The title string or jQuery promise which resolves to the title.
*/
setTitle(value) {
const title = this.getTitle();
this.titlePromise = $.Deferred();
this.asyncSet(value, title.html.bind(title))
.then(() => {
this.titlePromise.resolve(title);
return;
})
.catch(Notification.exception);
}
/**
* Set the modal body element.
*
* This method is overloaded to take either a string value for the body or a jQuery promise that is resolved with
* HTML and Javascript most commonly from a Templates.render call.
*
* @method setBody
* @param {(string|object)} value The body string or jQuery promise which resolves to the body.
* @fires event:filterContentUpdated
*/
setBody(value) {
this.bodyPromise = $.Deferred();
const body = this.getBody();
if (typeof value === 'string') {
// Just set the value if it's a string.
body.html(value);
FilterEvents.notifyFilterContentUpdated(body);
this.getRoot().trigger(ModalEvents.bodyRendered, this);
this.bodyPromise.resolve(body);
} else {
const modalPromise = new Pending(`amd-modal-js-pending-id-${this.getModalCount()}`);
// Otherwise we assume it's a promise to be resolved with
// html and javascript.
let contentPromise = null;
body.css('overflow', 'hidden');
// Ensure that the `value` is a jQuery Promise.
value = $.when(value);
if (value.state() == 'pending') {
// We're still waiting for the body promise to resolve so
// let's show a loading icon.
let height = body.innerHeight();
if (height < 100) {
height = 100;
}
body.animate({height: `${height}px`}, 150);
body.html('');
contentPromise = Templates.render(TEMPLATES.LOADING, {})
.then((html) => {
const loadingIcon = $(html).hide();
body.html(loadingIcon);
loadingIcon.fadeIn(150);
// We only want the loading icon to fade out
// when the content for the body has finished
// loading.
return $.when(loadingIcon.promise(), value);
})
.then((loadingIcon) => {
// Once the content has finished loading and
// the loading icon has been shown then we can
// fade the icon away to reveal the content.
return loadingIcon.fadeOut(100).promise();
})
.then(() => {
return value;
});
} else {
// The content is already loaded so let's just display
// it to the user. No need for a loading icon.
contentPromise = value;
}
// Now we can actually display the content.
contentPromise.then((html, js) => {
let result = null;
if (this.isVisible()) {
// If the modal is visible then we should display
// the content gracefully for the user.
body.css('opacity', 0);
const currentHeight = body.innerHeight();
body.html(html);
// We need to clear any height values we've set here
// in order to measure the height of the content being
// added. This then allows us to animate the height
// transition.
body.css('height', '');
const newHeight = body.innerHeight();
body.css('height', `${currentHeight}px`);
result = body.animate(
{height: `${newHeight}px`, opacity: 1},
{duration: 150, queue: false}
).promise();
} else {
// Since the modal isn't visible we can just immediately
// set the content. No need to animate it.
body.html(html);
}
if (js) {
if (this.isAttached) {
// If we're in the DOM then run the JS immediately.
Templates.runTemplateJS(js);
} else {
// Otherwise cache it to be run when we're attached.
this.bodyJS = js;
}
}
return result;
})
.then((result) => {
FilterEvents.notifyFilterContentUpdated(body);
this.getRoot().trigger(ModalEvents.bodyRendered, this);
return result;
})
.then(() => {
this.bodyPromise.resolve(body);
return;
})
.catch(Notification.exception)
.always(() => {
// When we're done displaying all of the content we need
// to clear the custom values we've set here.
body.css('height', '');
body.css('overflow', '');
body.css('opacity', '');
modalPromise.resolve();
return;
});
}
}
/**
* Alternative to setBody() that can be used from non-Jquery modules
*
* @param {Promise} promise promise that returns {html, js} object
* @return {Promise}
*/
setBodyContent(promise) {
// Call the leegacy API for now and pass it a jQuery Promise.
// This is a non-spec feature of jQuery and cannot be produced with spec promises.
// We can encourage people to migrate to this approach, and in future we can swap
// it so that setBody() calls setBodyPromise().
return promise.then(({html, js}) => this.setBody($.when(html, js)))
.catch(exception => {
this.hide();
throw exception;
});
}
/**
* Set the modal footer element. The footer element is made visible, if it
* isn't already.
*
* This method is overloaded to take either a string
* value for the body or a jQuery promise that is resolved with HTML and Javascript
* most commonly from a Templates.render call.
*
* @method setFooter
* @param {(string|object)} value The footer string or jQuery promise
*/
setFooter(value) {
// Make sure the footer is visible.
this.showFooter();
this.footerPromise = $.Deferred();
const footer = this.getFooter();
if (typeof value === 'string') {
// Just set the value if it's a string.
footer.html(value);
this.footerPromise.resolve(footer);
} else {
// Otherwise we assume it's a promise to be resolved with
// html and javascript.
Templates.render(TEMPLATES.LOADING, {})
.then((html) => {
footer.html(html);
return value;
})
.then((html, js) => {
footer.html(html);
if (js) {
if (this.isAttached) {
// If we're in the DOM then run the JS immediately.
Templates.runTemplateJS(js);
} else {
// Otherwise cache it to be run when we're attached.
this.footerJS = js;
}
}
return footer;
})
.then((footer) => {
this.footerPromise.resolve(footer);
this.showFooter();
return;
})
.catch(Notification.exception);
}
}
/**
* Check if the footer has any content in it.
*
* @method hasFooterContent
* @return {bool}
*/
hasFooterContent() {
return this.getFooter().children().length ? true : false;
}
/**
* Hide the footer element.
*
* @method hideFooter
*/
hideFooter() {
this.getFooter().addClass('hidden');
}
/**
* Show the footer element.
*
* @method showFooter
*/
showFooter() {
this.getFooter().removeClass('hidden');
}
/**
* Mark the modal as a large modal.
*
* @method setLarge
*/
setLarge() {
if (this.isLarge()) {
return;
}
this.getModal().addClass('modal-lg');
}
/**
* Mark the modal as a centered modal.
*
* @method setVerticallyCentered
*/
setVerticallyCentered() {
if (this.isVerticallyCentered()) {
return;
}
this.getModal().addClass('modal-dialog-centered');
}
/**
* Check if the modal is a large modal.
*
* @method isLarge
* @return {bool}
*/
isLarge() {
return this.getModal().hasClass('modal-lg');
}
/**
* Check if the modal is vertically centered.
*
* @method isVerticallyCentered
* @return {bool}
*/
isVerticallyCentered() {
return this.getModal().hasClass('modal-dialog-centered');
}
/**
* Mark the modal as a small modal.
*
* @method setSmall
*/
setSmall() {
if (this.isSmall()) {
return;
}
this.getModal().removeClass('modal-lg');
}
/**
* Check if the modal is a small modal.
*
* @method isSmall
* @return {bool}
*/
isSmall() {
return !this.getModal().hasClass('modal-lg');
}
/**
* Set this modal to be scrollable or not.
*
* @method setScrollable
* @param {bool} value Whether the modal is scrollable or not
*/
setScrollable(value) {
if (!value) {
this.getModal()[0].classList.remove('modal-dialog-scrollable');
return;
}
this.getModal()[0].classList.add('modal-dialog-scrollable');
}
/**
* Determine the highest z-index value currently on the page.
*
* @method calculateZIndex
* @return {int}
*/
calculateZIndex() {
const items = $(`${SELECTORS.DIALOG}, ${SELECTORS.MENU_BAR}, ${SELECTORS.HAS_Z_INDEX}`);
let zIndex = parseInt(this.root.css('z-index'));
items.each((index, item) => {
item = $(item);
if (!item.is(':visible')) {
// Do not include items which are not visible in the z-index calculation.
// This is important because some dialogues are not removed from the DOM.
return;
}
// Note that webkit browsers won't return the z-index value from the CSS stylesheet
// if the element doesn't have a position specified. Instead it'll return "auto".
const itemZIndex = item.css('z-index') ? parseInt(item.css('z-index')) : 0;
if (itemZIndex > zIndex) {
zIndex = itemZIndex;
}
});
return zIndex;
}
/**
* Check if this modal is visible.
*
* @method isVisible
* @return {bool}
*/
isVisible() {
return this.root.hasClass('show');
}
/**
* Check if this modal has focus.
*
* @method hasFocus
* @return {bool}
*/
hasFocus() {
const target = $(document.activeElement);
return this.root.is(target) || this.root.has(target).length;
}
/**
* Check if this modal has CSS transitions applied.
*
* @method hasTransitions
* @return {bool}
*/
hasTransitions() {
return this.getRoot().hasClass('fade');
}
/**
* Gets the jQuery wrapped node that the Modal should be attached to.
*
* @returns {jQuery}
*/
getAttachmentPoint() {
return $(Fullscreen.getElement() || this.attachmentPoint);
}
/**
* Display this modal. The modal will be attached to the DOM if it hasn't
* already been.
*
* @method show
* @returns {Promise}
*/
show() {
if (this.isVisible()) {
return $.Deferred().resolve();
}
const pendingPromise = new Pending('core/modal:show');
if (this.hasFooterContent()) {
this.showFooter();
} else {
this.hideFooter();
}
this.attachToDOM();
// If the focusOnClose was not set. Set the focus back to triggered element.
if (!this.focusOnClose && document.activeElement) {
this.focusOnClose = document.activeElement;
}
return this.getBackdrop()
.then((backdrop) => {
const currentIndex = this.calculateZIndex();
const newIndex = currentIndex + 2;
const newBackdropIndex = newIndex - 1;
this.root.css('z-index', newIndex);
backdrop.setZIndex(newBackdropIndex);
backdrop.show();
this.root.removeClass('hide').addClass('show');
this.accessibilityShow();
this.getModal().focus();
$('body').addClass('modal-open');
this.root.trigger(ModalEvents.shown, this);
return;
})
.then(pendingPromise.resolve);
}
/**
* Hide this modal if it does not contain a form.
*
* @method hideIfNotForm
*/
hideIfNotForm() {
const formElement = this.modal.find(SELECTORS.FORM);
if (formElement.length == 0) {
this.hide();
}
}
/**
* Hide this modal.
*
* @method hide
*/
hide() {
this.getBackdrop().done((backdrop) => {
FocusLock.untrapFocus();
if (!this.countOtherVisibleModals()) {
// Hide the backdrop if we're the last open modal.
backdrop.hide();
$('body').removeClass('modal-open');
}
const currentIndex = parseInt(this.root.css('z-index'));
this.root.css('z-index', '');
backdrop.setZIndex(currentIndex - 3);
this.accessibilityHide();
if (this.hasTransitions()) {
// Wait for CSS transitions to complete before hiding the element.
this.getRoot().one('transitionend webkitTransitionEnd oTransitionEnd', () => {
this.getRoot().removeClass('show').addClass('hide');
});
} else {
this.getRoot().removeClass('show').addClass('hide');
}
// Ensure the modal is moved onto the body node if it is still attached to the DOM.
if ($(document.body).find(this.getRoot()).length) {
$(document.body).append(this.getRoot());
}
this.root.trigger(ModalEvents.hidden, this);
});
}
/**
* Remove this modal from the DOM.
*
* @method destroy
*/
destroy() {
this.hide();
removeToastRegion(this.getBody().get(0));
this.root.remove();
this.root.trigger(ModalEvents.destroyed, this);
this.attachmentPoint.remove();
}
/**
* Sets the appropriate aria attributes on this dialogue and the other
* elements in the DOM to ensure that screen readers are able to navigate
* the dialogue popup correctly.
*
* @method accessibilityShow
*/
accessibilityShow() {
// Make us visible to screen readers.
Aria.unhide(this.root.get());
// Hide siblings.
Aria.hideSiblings(this.root.get()[0]);
}
/**
* Restores the aria visibility on the DOM elements changed when displaying
* the dialogue popup and makes the dialogue aria hidden to allow screen
* readers to navigate the main page correctly when the dialogue is closed.
*
* @method accessibilityHide
*/
accessibilityHide() {
// Unhide siblings.
Aria.unhideSiblings(this.root.get()[0]);
// Hide this modal.
Aria.hide(this.root.get());
}
/**
* Set up all of the event handling for the modal.
*
* @method registerEventListeners
*/
registerEventListeners() {
this.getRoot().on('keydown', (e) => {
if (!this.isVisible()) {
return;
}
if (e.keyCode == KeyCodes.escape) {
if (this.removeOnClose) {
this.destroy();
} else {
this.hide();
}
}
});
// Listen for clicks on the modal container.
this.getRoot().click((e) => {
// If the click wasn't inside the modal element then we should
// hide the modal.
if (!$(e.target).closest(SELECTORS.MODAL).length) {
// The check above fails to detect the click was inside the modal when the DOM tree is already changed.
// So, we check if we can still find the container element or not. If not, then the DOM tree is changed.
// It's best not to hide the modal in that case.
if ($(e.target).closest(SELECTORS.CONTAINER).length) {
const outsideClickEvent = $.Event(ModalEvents.outsideClick);
this.getRoot().trigger(outsideClickEvent, this);
if (!outsideClickEvent.isDefaultPrevented()) {
this.hideIfNotForm();
}
}
}
});
CustomEvents.define(this.getModal(), [CustomEvents.events.activate]);
this.getModal().on(CustomEvents.events.activate, SELECTORS.HIDE, (e, data) => {
if (this.removeOnClose) {
this.destroy();
} else {
this.hide();
}
data.originalEvent.preventDefault();
});
this.getRoot().on(ModalEvents.hidden, () => {
if (this.focusOnClose) {
// Focus on the element that actually triggers the modal.
this.focusOnClose.focus();
}
});
}
/**
* Register a listener to close the dialogue when the cancel button is pressed.
*
* @method registerCloseOnCancel
*/
registerCloseOnCancel() {
// Handle the clicking of the Cancel button.
this.getModal().on(CustomEvents.events.activate, this.getActionSelector('cancel'), (e, data) => {
const cancelEvent = $.Event(ModalEvents.cancel);
this.getRoot().trigger(cancelEvent, this);
if (!cancelEvent.isDefaultPrevented()) {
data.originalEvent.preventDefault();
if (this.removeOnClose) {
this.destroy();
} else {
this.hide();
}
}
});
}
/**
* Register a listener to close the dialogue when the save button is pressed.
*
* @method registerCloseOnSave
*/
registerCloseOnSave() {
// Handle the clicking of the Cancel button.
this.getModal().on(CustomEvents.events.activate, this.getActionSelector('save'), (e, data) => {
const saveEvent = $.Event(ModalEvents.save);
this.getRoot().trigger(saveEvent, this);
if (!saveEvent.isDefaultPrevented()) {
data.originalEvent.preventDefault();
if (this.removeOnClose) {
this.destroy();
} else {
this.hide();
}
}
});
}
/**
* Register a listener to close the dialogue when the delete button is pressed.
*
* @method registerCloseOnDelete
*/
registerCloseOnDelete() {
// Handle the clicking of the Cancel button.
this.getModal().on(CustomEvents.events.activate, this.getActionSelector('delete'), (e, data) => {
const deleteEvent = $.Event(ModalEvents.delete);
this.getRoot().trigger(deleteEvent, this);
if (!deleteEvent.isDefaultPrevented()) {
data.originalEvent.preventDefault();
if (this.removeOnClose) {
this.destroy();
} else {
this.hide();
}
}
});
}
/**
* Set or resolve and set the value using the function.
*
* @method asyncSet
* @param {(string|object)} value The string or jQuery promise.
* @param {function} setFunction The setter
* @return {Promise}
*/
asyncSet(value, setFunction) {
const getWrappedValue = (value) => {
if (value instanceof Promise) {
return $.when(value);
}
if (typeof value !== 'object' || !value.hasOwnProperty('then')) {
return $.Deferred().resolve(value);
}
return value;
};
return getWrappedValue(value)
.then((content) => setFunction(content))
.catch(Notification.exception);
}
/**
* Set the title text of a button.
*
* This method is overloaded to take either a string value for the button title or a jQuery promise that is resolved with
* text most commonly from a Str.get_string call.
*
* @param {DOMString} action The action of the button
* @param {(String|object)} value The button text, or a promise which will resolve to it
* @returns {Promise}
*/
setButtonText(action, value) {
const button = this.getFooter().find(this.getActionSelector(action));
if (!button) {
throw new Error("Unable to find the '" + action + "' button");
}
return this.asyncSet(value, button.text.bind(button));
}
/**
* Get the Selector for an action.
*
* @param {String} action
* @returns {DOMString}
*/
getActionSelector(action) {
return "[data-action='" + action + "']";
}
/**
* Set the flag to remove the modal from the DOM on close.
*
* @param {Boolean} remove
*/
setRemoveOnClose(remove) {
this.removeOnClose = remove;
}
/**
* Set the return element for the modal.
*
* @param {Element|jQuery} element Element to focus when the modal is closed
*/
setReturnElement(element) {
this.focusOnClose = element;
}
/**
* Set the a button enabled or disabled.
*
* @param {DOMString} action The action of the button
* @param {Boolean} disabled the new disabled value
*/
setButtonDisabled(action, disabled) {
const button = this.getFooter().find(this.getActionSelector(action));
if (!button) {
throw new Error("Unable to find the '" + action + "' button");
}
if (disabled) {
button.attr('disabled', '');
} else {
button.removeAttr('disabled');
}
}
}