ionic-framework/src/components/modal/modal-component.ts

import { Component, ComponentResolver, HostListener, Renderer, ViewChild, ViewContainerRef } from '@angular/core';

import { addSelector } from '../../config/bootstrap';
import { Animation } from '../../animations/animation';
import { Backdrop } from '../backdrop/backdrop';
import { Key } from '../../util/key';
import { NavParams } from '../nav/nav-params';
import { pascalCaseToDashCase } from '../../util/util';
import { PageTransition } from '../../transitions/page-transition';
import { TransitionOptions } from '../../transitions/transition';
import { ViewController } from '../nav/view-controller';
import { windowDimensions } from '../../util/dom';


/**
 * @private
 */
@Component({
  selector: 'ion-modal',
  template: `
    <ion-backdrop disableScroll="false" (click)="bdClick($event)"></ion-backdrop>
    <div class="modal-wrapper">
      <div #viewport nav-viewport></div>
    </div>
  `,
  directives: [Backdrop]
})
export class ModalCmp {

  @ViewChild('viewport', {read: ViewContainerRef}) viewport: ViewContainerRef;

  private d: any;
  private enabled: boolean;

  constructor(private _compiler: ComponentResolver, private _renderer: Renderer, private _navParams: NavParams, private _viewCtrl: ViewController) {
    this.d = _navParams.data.opts;
  }

  loadComponent(done: Function) {
    let componentType = this._navParams.data.componentType;
    addSelector(componentType, 'ion-page');

    this._compiler.resolveComponent(componentType).then((componentFactory) => {
      let componentRef = this.viewport.createComponent(componentFactory, this.viewport.length, this.viewport.parentInjector);
      this._renderer.setElementClass(componentRef.location.nativeElement, 'show-page', true);

      // auto-add page css className created from component JS class name
      let cssClassName = pascalCaseToDashCase(componentType.name);
      this._renderer.setElementClass(componentRef.location.nativeElement, cssClassName, true);
      this._viewCtrl.setInstance(componentRef.instance);
      this.enabled = true;
      done();
    });
  }

  ngAfterViewInit() {
    // intentionally kept empty
  }

  dismiss(role: any): Promise<any> {
    return this._viewCtrl.dismiss(null, role);
  }

  bdClick() {
    if (this.enabled && this.d.enableBackdropDismiss) {
      this.dismiss('backdrop');
    }
  }

  @HostListener('body:keyup', ['$event'])
  private _keyUp(ev: KeyboardEvent) {
    if (this.enabled && this._viewCtrl.isLast() && ev.keyCode === Key.ESCAPE ) {
      this.bdClick();
    }
  }
}

/**
 * Animations for modals
 */
 class ModalSlideIn extends PageTransition {
   constructor(enteringView: ViewController, leavingView: ViewController, opts: TransitionOptions) {
     super(enteringView, leavingView, opts);

     let ele = enteringView.pageRef().nativeElement;
     let backdropEle = ele.querySelector('ion-backdrop');
     let backdrop = new Animation(backdropEle);
     let wrapper = new Animation(ele.querySelector('.modal-wrapper'));

     backdrop.fromTo('opacity', 0.01, 0.4);
     wrapper.fromTo('translateY', '100%', '0%');


     this
       .element(enteringView.pageRef())
       .easing('cubic-bezier(0.36,0.66,0.04,1)')
       .duration(400)
       .add(backdrop)
       .add(wrapper);

     if (enteringView.hasNavbar()) {
       // entering page has a navbar
       let enteringNavBar = new Animation(enteringView.navbarRef());
       enteringNavBar.before.addClass('show-navbar');
       this.add(enteringNavBar);
     }
   }
 }
 PageTransition.register('modal-slide-in', ModalSlideIn);


class ModalSlideOut extends PageTransition {
  constructor(enteringView: ViewController, leavingView: ViewController, opts: TransitionOptions) {
    super(enteringView, leavingView, opts);

    let ele = leavingView.pageRef().nativeElement;
    let backdrop = new Animation(ele.querySelector('ion-backdrop'));
    let wrapperEle = <HTMLElement> ele.querySelector('.modal-wrapper');
    let wrapperEleRect = wrapperEle.getBoundingClientRect();
    let wrapper = new Animation(wrapperEle);

    // height of the screen - top of the container tells us how much to scoot it down
    // so it's off-screen
    let screenDimensions = windowDimensions();
    wrapper.fromTo('translateY', '0px', `${screenDimensions.height - wrapperEleRect.top}px`);
    backdrop.fromTo('opacity', 0.4, 0.0);

    this
      .element(leavingView.pageRef())
      .easing('ease-out')
      .duration(250)
      .add(backdrop)
      .add(wrapper);
  }
}
PageTransition.register('modal-slide-out', ModalSlideOut);


class ModalMDSlideIn extends PageTransition {
  constructor(enteringView: ViewController, leavingView: ViewController, opts: TransitionOptions) {
    super(enteringView, leavingView, opts);

    let ele = enteringView.pageRef().nativeElement;
    let backdrop = new Animation(ele.querySelector('ion-backdrop'));
    let wrapper = new Animation(ele.querySelector('.modal-wrapper'));

    backdrop.fromTo('opacity', 0.01, 0.4);
    wrapper.fromTo('translateY', '40px', '0px');
    wrapper.fromTo('opacity', 0.01, 1);

    const DURATION = 280;
    const EASING = 'cubic-bezier(0.36,0.66,0.04,1)';
    this.element(enteringView.pageRef()).easing(EASING).duration(DURATION)
      .add(backdrop)
      .add(wrapper);

    if (enteringView.hasNavbar()) {
      // entering page has a navbar
      let enteringNavBar = new Animation(enteringView.navbarRef());
      enteringNavBar.before.addClass('show-navbar');
      this.add(enteringNavBar);
    }
  }
}
PageTransition.register('modal-md-slide-in', ModalMDSlideIn);


class ModalMDSlideOut extends PageTransition {
  constructor(enteringView: ViewController, leavingView: ViewController, opts: TransitionOptions) {
    super(enteringView, leavingView, opts);

    let ele = leavingView.pageRef().nativeElement;
    let backdrop = new Animation(ele.querySelector('ion-backdrop'));
    let wrapper = new Animation(ele.querySelector('.modal-wrapper'));

    backdrop.fromTo('opacity', 0.4, 0.0);
    wrapper.fromTo('translateY', '0px', '40px');
    wrapper.fromTo('opacity', 0.99, 0);

    this
      .element(leavingView.pageRef())
      .duration(200)
      .easing('cubic-bezier(0.47,0,0.745,0.715)')
      .add(wrapper)
      .add(backdrop);
  }
}
PageTransition.register('modal-md-slide-out', ModalMDSlideOut);