ionic-angular
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A powerful framework for building mobile and progressive web apps with JavaScript and Angular
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JavaScript
import { Animation } from '../animations/animation';
import { isPresent } from '../util/util';
import { PageTransition } from './page-transition';
const DURATION = 500;
const EASING = 'cubic-bezier(0.36,0.66,0.04,1)';
const OPACITY = 'opacity';
const TRANSFORM = 'transform';
const TRANSLATEX = 'translateX';
const CENTER = '0%';
const OFF_OPACITY = 0.8;
const SHOW_BACK_BTN_CSS = 'show-back-button';
export class IOSTransition extends PageTransition {
init() {
super.init();
const plt = this.plt;
const OFF_RIGHT = plt.isRTL ? '-99.5%' : '99.5%';
const OFF_LEFT = plt.isRTL ? '33%' : '-33%';
const enteringView = this.enteringView;
const leavingView = this.leavingView;
const opts = this.opts;
this.duration(isPresent(opts.duration) ? opts.duration : DURATION);
this.easing(isPresent(opts.easing) ? opts.easing : EASING);
const backDirection = (opts.direction === 'back');
const enteringHasNavbar = (enteringView && enteringView.hasNavbar());
const leavingHasNavbar = (leavingView && leavingView.hasNavbar());
if (enteringView) {
// get the native element for the entering page
const enteringPageEle = enteringView.pageRef().nativeElement;
// entering content
const enteringContent = new Animation(plt, enteringView.contentRef());
enteringContent.element(enteringPageEle.querySelectorAll('ion-header > *:not(ion-navbar),ion-footer > *'));
this.add(enteringContent);
if (backDirection) {
// entering content, back direction
enteringContent
.fromTo(TRANSLATEX, OFF_LEFT, CENTER, true)
.fromTo(OPACITY, OFF_OPACITY, 1, true);
}
else {
// entering content, forward direction
enteringContent
.beforeClearStyles([OPACITY])
.fromTo(TRANSLATEX, OFF_RIGHT, CENTER, true);
}
if (enteringHasNavbar) {
// entering page has a navbar
const enteringNavbarEle = enteringPageEle.querySelector('ion-navbar');
const enteringNavBar = new Animation(plt, enteringNavbarEle);
this.add(enteringNavBar);
const enteringTitle = new Animation(plt, enteringNavbarEle.querySelector('ion-title'));
const enteringNavbarItems = new Animation(plt, enteringNavbarEle.querySelectorAll('ion-buttons,[menuToggle]'));
const enteringNavbarBg = new Animation(plt, enteringNavbarEle.querySelector('.toolbar-background'));
const enteringBackButton = new Animation(plt, enteringNavbarEle.querySelector('.back-button'));
enteringNavBar
.add(enteringTitle)
.add(enteringNavbarItems)
.add(enteringNavbarBg)
.add(enteringBackButton);
enteringTitle.fromTo(OPACITY, 0.01, 1, true);
enteringNavbarItems.fromTo(OPACITY, 0.01, 1, true);
// set properties depending on direction
if (backDirection) {
// entering navbar, back direction
enteringTitle.fromTo(TRANSLATEX, OFF_LEFT, CENTER, true);
if (enteringView.enableBack()) {
// back direction, entering page has a back button
enteringBackButton
.beforeAddClass(SHOW_BACK_BTN_CSS)
.fromTo(OPACITY, 0.01, 1, true);
}
}
else {
// entering navbar, forward direction
enteringTitle.fromTo(TRANSLATEX, OFF_RIGHT, CENTER, true);
enteringNavbarBg
.beforeClearStyles([OPACITY])
.fromTo(TRANSLATEX, OFF_RIGHT, CENTER, true);
if (enteringView.enableBack()) {
// forward direction, entering page has a back button
enteringBackButton
.beforeAddClass(SHOW_BACK_BTN_CSS)
.fromTo(OPACITY, 0.01, 1, true);
const enteringBackBtnText = new Animation(plt, enteringNavbarEle.querySelector('.back-button-text'));
enteringBackBtnText.fromTo(TRANSLATEX, (plt.isRTL ? '-100px' : '100px'), '0px');
enteringNavBar.add(enteringBackBtnText);
}
else {
enteringBackButton.beforeRemoveClass(SHOW_BACK_BTN_CSS);
}
}
}
}
// setup leaving view
if (leavingView && leavingView.pageRef()) {
// leaving content
const leavingPageEle = leavingView.pageRef().nativeElement;
const leavingContent = new Animation(plt, leavingView.contentRef());
leavingContent.element(leavingPageEle.querySelectorAll('ion-header > *:not(ion-navbar),ion-footer > *'));
this.add(leavingContent);
if (backDirection) {
// leaving content, back direction
leavingContent
.beforeClearStyles([OPACITY])
.fromTo(TRANSLATEX, CENTER, (plt.isRTL ? '-100%' : '100%'));
}
else {
// leaving content, forward direction
leavingContent
.fromTo(TRANSLATEX, CENTER, OFF_LEFT)
.fromTo(OPACITY, 1, OFF_OPACITY)
.afterClearStyles([TRANSFORM, OPACITY]);
}
if (leavingHasNavbar) {
// leaving page has a navbar
const leavingNavbarEle = leavingPageEle.querySelector('ion-navbar');
const leavingNavBar = new Animation(plt, leavingNavbarEle);
const leavingTitle = new Animation(plt, leavingNavbarEle.querySelector('ion-title'));
const leavingNavbarItems = new Animation(plt, leavingNavbarEle.querySelectorAll('ion-buttons,[menuToggle]'));
const leavingNavbarBg = new Animation(plt, leavingNavbarEle.querySelector('.toolbar-background'));
const leavingBackButton = new Animation(plt, leavingNavbarEle.querySelector('.back-button'));
leavingNavBar
.add(leavingTitle)
.add(leavingNavbarItems)
.add(leavingBackButton)
.add(leavingNavbarBg);
this.add(leavingNavBar);
// fade out leaving navbar items
leavingBackButton.fromTo(OPACITY, 0.99, 0);
leavingTitle.fromTo(OPACITY, 0.99, 0);
leavingNavbarItems.fromTo(OPACITY, 0.99, 0);
if (backDirection) {
// leaving navbar, back direction
leavingTitle.fromTo(TRANSLATEX, CENTER, (plt.isRTL ? '-100%' : '100%'));
// leaving navbar, back direction, and there's no entering navbar
// should just slide out, no fading out
leavingNavbarBg
.beforeClearStyles([OPACITY])
.fromTo(TRANSLATEX, CENTER, (plt.isRTL ? '-100%' : '100%'));
let leavingBackBtnText = new Animation(plt, leavingNavbarEle.querySelector('.back-button-text'));
leavingBackBtnText.fromTo(TRANSLATEX, CENTER, (plt.isRTL ? -300 : 300) + 'px');
leavingNavBar.add(leavingBackBtnText);
}
else {
// leaving navbar, forward direction
leavingTitle
.fromTo(TRANSLATEX, CENTER, OFF_LEFT)
.afterClearStyles([TRANSFORM]);
leavingBackButton.afterClearStyles([OPACITY]);
leavingTitle.afterClearStyles([OPACITY]);
leavingNavbarItems.afterClearStyles([OPACITY]);
}
}
}
}
}
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