/*
 2017 Julian Garnier
 Released under the MIT license
*/
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/**
 * menu2.js
 * http://www.codrops.com
 *
 * Licensed under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2018, Codrops
 * http://www.codrops.com
 */
{
    class Box {
        constructor(el, pos) {
            this.DOM = {el: el};
            this.DOM.bg = this.DOM.el.querySelector('.grim__item-bg');
            this.DOM.inner = this.DOM.el.querySelector('.grim__item-content > .grim__item-inner');
            this.DOM.img = this.DOM.el.querySelector('.grim__item-img');
            this.DOM.cover = this.DOM.el.querySelector('.grim__item-bg-cover');
            this.DOM.link = this.DOM.el.querySelector('a.grim__link');
            this.pos = pos;
        }
        open() {
            return new Promise((resolve, reject) => {
                this.DOM.bg.style.transformOrigin = this.pos % 2 === 0 ? '50% 100%' : '0% 50%';

                anime.remove(this.DOM.bg);
                anime({
                    targets: this.DOM.bg,
                    duration: this.DOM.bg.dataset.duration || 40+this.pos*20, // increment as more boxes get revealed..
                    easing: this.DOM.bg.dataset.easing || 'easeInOutQuad',
                    opacity: {
                        value: 1,
                        duration: 1
                    },
                    scaleY: this.pos % 2 === 0 ? [0,1] : 1,
                    scaleX: Math.abs(this.pos % 2) == 1 ? [0,1] : 1,
                    complete: () => {
                        if ( this.DOM.img && this.DOM.cover ) {
                            this.DOM.img.style.opacity = 1;
                            this.DOM.cover.style.opacity = 1;
                            this.DOM.cover.style.transformOrigin = '100% 50%';
                            anime.remove(this.DOM.cover);
                            anime({
                                targets: this.DOM.cover,
                                duration: 700,
                                easing: 'easeOutQuint',
                                scaleX: [1,0]
                            });
                        }

                        if ( this.DOM.inner ) {
                            anime.remove(this.DOM.inner);
                            anime({
                                targets: this.DOM.inner,
                                duration: 1200,
                                delay: 150,
                                easing: 'easeOutQuint',
                                opacity: {
                                    value: 1,
                                    duration: 1
                                },
                                translateY: ['100%','0%']
                            });
                        }

                        resolve();
                    }
                });
            });
        }
        close() {
            return new Promise((resolve, reject) => {
                const animateBoxFn = () => {
                    this.DOM.bg.style.transformOrigin = this.pos % 2 === 0 ? '50% 0%' : '100% 50%';

                    anime.remove(this.DOM.bg);
                    anime({
                        targets: this.DOM.bg,
                        duration: this.DOM.bg.dataset.duration || 80+this.pos*10,
                        easing: this.DOM.bg.dataset.easing || 'easeInOutQuad',
                        opacity: {
                            value: 0,
                            delay: this.DOM.bg.dataset.duration || 40+this.pos*10,
                            duration: 1
                        },
                        scaleY: this.pos % 2 === 0 ? [1,0] : 1,
                        scaleX: Math.abs(this.pos % 2) == 1 ? [1,0] : 1,
                        complete: resolve
                    });
                };

                if ( this.DOM.img && this.DOM.cover ) {
                    anime.remove(this.DOM.img);
                    anime({
                        targets: this.DOM.img,
                        duration: 200,
                        easing: 'linear',
                        opacity: 0
                    });
                }
                animateBoxFn();

                if ( this.DOM.inner ) {
                    this.DOM.inner.style.opacity = 0;
                }
            });
        }
    }

    class Menu {
        constructor(el) {
            this.DOM = {el: el};
            this.DOM.items = Array.from(this.DOM.el.querySelectorAll('.grim__item'));
            this.itemsTotal = this.DOM.items.length;
            this.boxes = [];
            this.DOM.items.forEach((item, pos) => {
                this.boxes.push(new Box(item, pos));
            });

            this.initEvents();
        }
        initEvents() {
            for( let i = 0; i < this.itemsTotal; ++i ) {
                const link = this.boxes[i].DOM.link;
                if ( link ) {
                    link.addEventListener('click', (ev) => {
                        if ( this.isAnimating ) return;
                        document.querySelector('.content--switch-current').classList.remove('content--switch-current');
                        document.querySelector(link.getAttribute('href')).classList.add('content--switch-current');
                        this.close();
                    });
                }
            }
        }
        open() {
            this.toggle('open');
        }
        close() {
            this.toggle('close');
        }
        toggle(action) {
            if ( this.isAnimating ) return;
            this.isAnimating = true;
            if ( action === 'open' ) {
                this.openBoxes();
            }
            else {
                this.closeBoxes();
            }
        }
        openBoxes(pos = 0) {
            this.toggleBoxes('open', pos);
        }
        closeBoxes(pos = 0) {
            this.toggleBoxes('close', pos);
        }
        toggleBoxes(action, pos) {
            if ( pos >= this.itemsTotal ) {
                this.isAnimating = false;
                return;
            };
            DOM.grim.classList[action === 'open' ? 'add' : 'remove']('grim--open');
            const box = this.boxes[pos];
            box[action === 'open' ? 'open' : 'close']().then(() => this[action === 'open' ? 'openBoxes' : 'closeBoxes'](pos+1));
        }
    }

    let DOM = {};

    imagesLoaded(document.querySelectorAll('.grim__item-img'), {background: true}, () => {
        document.body.classList.remove('loading');

        DOM.grim = document.querySelector('.grim');
        DOM.menu = new Menu(DOM.grim);
        DOM.menuCtrls = {
            open: document.querySelector('.menu-trigger'),
            close: document.querySelector('.menu-trigger--close')
        };

        DOM.menuCtrls.open.addEventListener('click', () => DOM.menu.open());
        DOM.menuCtrls.close.addEventListener('click', () => DOM.menu.close());
    });
}