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/**
* @copyright 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @author 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import _ from 'underscore'
import $ from 'jquery'
import { menuSpeed } from './constants'
export let currentMenu = null
export let currentMenuToggle = null
/**
* For menu toggling
*
* @param {jQuery} $toggle the toggle element
* @param {jQuery} $menuEl the menu container element
* @param {function|undefined} toggle callback invoked everytime the menu is opened
* @param {boolean} headerMenu is this a top right header menu?
* @returns {undefined}
*/
export const registerMenu = function($toggle, $menuEl, toggle, headerMenu) {
$menuEl.addClass('menu')
const isClickableElement = $toggle.prop('tagName') === 'A' || $toggle.prop('tagName') === 'BUTTON'
// On link and button, the enter key trigger a click event
// Only use the click to avoid two fired events
$toggle.on(isClickableElement ? 'click.menu' : 'click.menu keyup.menu', function(event) {
// prevent the link event (append anchor to URL)
event.preventDefault()
// allow enter key as a trigger
if (event.key && event.key !== 'Enter') {
return
}
if ($menuEl.is(currentMenu)) {
hideMenus()
return
} else if (currentMenu) {
// another menu was open?
// close it
hideMenus()
}
if (headerMenu === true) {
$menuEl.parent().addClass('openedMenu')
}
// Set menu to expanded
$toggle.attr('aria-expanded', true)
$menuEl.slideToggle(menuSpeed, toggle)
currentMenu = $menuEl
currentMenuToggle = $toggle
})
}
/**
* Unregister a previously registered menu
*
* @param {jQuery} $toggle the toggle element
* @param {jQuery} $menuEl the menu container element
*/
export const unregisterMenu = ($toggle, $menuEl) => {
// close menu if opened
if ($menuEl.is(currentMenu)) {
hideMenus()
}
$toggle.off('click.menu').removeClass('menutoggle')
$menuEl.removeClass('menu')
}
/**
* Hides any open menus
*
* @param {Function} complete callback when the hiding animation is done
*/
export const hideMenus = function(complete) {
if (currentMenu) {
const lastMenu = currentMenu
currentMenu.trigger(new $.Event('beforeHide'))
currentMenu.slideUp(menuSpeed, function() {
lastMenu.trigger(new $.Event('afterHide'))
if (complete) {
complete.apply(this, arguments)
}
})
}
// Set menu to closed
$('.menutoggle').attr('aria-expanded', false)
$('.openedMenu').removeClass('openedMenu')
currentMenu = null
currentMenuToggle = null
}
/**
* Shows a given element as menu
*
* @param {Object} [$toggle=null] menu toggle
* @param {Object} $menuEl menu element
* @param {Function} complete callback when the showing animation is done
*/
export const showMenu = ($toggle, $menuEl, complete) => {
if ($menuEl.is(currentMenu)) {
return
}
hideMenus()
currentMenu = $menuEl
currentMenuToggle = $toggle
$menuEl.trigger(new $.Event('beforeShow'))
$menuEl.show()
$menuEl.trigger(new $.Event('afterShow'))
// no animation
if (_.isFunction(complete)) {
complete()
}
}
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