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ionic-framework/core/src/components/modal
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2019-06-19 21:33:50 +02:00
2019-06-19 21:33:50 +02:00

ion-modal

A Modal is a dialog that appears on top of the app's content, and must be dismissed by the app before interaction can resume. It is useful as a select component when there are a lot of options to choose from, or when filtering items in a list, as well as many other use cases.

Creating

Modals can be created using a Modal Controller. They can be customized by passing modal options in the modal controller's create() method.

Dismissing

The modal can be dismissed after creation by calling the dismiss() method on the modal controller. The onDidDismiss function can be called to perform an action after the modal is dismissed.

Usage

Angular

import { Component } from '@angular/core';
import { ModalController } from '@ionic/angular';
import { ModalPage } from '../modal/modal.page';

@Component({
  selector: 'modal-example',
  templateUrl: 'modal-example.html',
  styleUrls: ['./modal-example.css']
})
export class ModalExample {
  constructor(public modalController: ModalController) {

  }

  async presentModal() {
    const modal = await this.modalController.create({
      component: ModalPage
    });
    return await modal.present();
  }
}
import { Component, Input } from '@angular/core';
import { NavParams } from '@ionic/angular';

@Component({
  selector: 'modal-page',
})
export class ModalPage {

  constructor() {

  }

}

Passing Data

During creation of a modal, data can be passed in through the componentProps. The previous example can be written to include data:

async presentModal() {
  const modal = await this.modalController.create({
    component: ModalPage,
    componentProps: {
      'firstName': 'Douglas',
      'lastName': 'Adams',
      'middleInitial': 'N'
    }
  });
  return await modal.present();
}

To get the data passed into the componentProps, either set it as an @Input or access it via NavParams on the ModalPage:

export class ModalPage {

  // Data passed in by componentProps
  @Input() firstName: string;
  @Input() lastName: string;
  @Input() middleInitial: string;

  constructor(navParams: NavParams) {
    // componentProps can also be accessed at construction time using NavParams
    console.log(navParams.get('firstName');
  }

}

Dismissing a Modal

A modal can be dismissed by calling the dismiss method on the modal controller and optionally passing any data from the modal.

export class ModalPage {
  ...

  dismiss() {
    // using the injected ModalController this page
    // can "dismiss" itself and optionally pass back data
    this.modalCtrl.dismiss({
      'dismissed': true
    });
  }
}

After being dismissed, the data can be read in through the onWillDismiss or onDidDismiss attached to the modal after creation:

const { data } = await modal.onWillDismiss();
console.log(data);

Lazy Loading

When lazy loading a modal, it's important to note that the modal will not be loaded when it is opened, but rather when the module that imports the modal's module is loaded.

For example, say there exists a CalendarComponent and an EventModal. The modal is presented by clicking a button in the CalendarComponent. In Angular, the EventModalModule would need to be included in the CalendarComponentModule since the modal is created in the CalendarComponent:

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { IonicModule } from '@ionic/angular';

import { CalendarComponent } from './calendar.component';
import { EventModalModule } from '../modals/event/event.module';

@NgModule({
  declarations: [
    CalendarComponent
  ],
  imports: [
    IonicModule,
    CommonModule,
    EventModalModule
  ],
  exports: [
    CalendarComponent
  ]
})

export class CalendarComponentModule {}

Javascript

<body>
  <ion-modal-controller></ion-modal-controller>
</body>
customElements.define('modal-page', class extends HTMLElement {
  connectedCallback() {
    this.innerHTML = `
<ion-header>
  <ion-toolbar>
    <ion-title>Modal Header</ion-title>
    <ion-buttons slot="primary">
      <ion-button onClick="dismissModal()">
        <ion-icon slot="icon-only" name="close"></ion-icon>
      </ion-button>
    </ion-buttons>
  </ion-toolbar>
</ion-header>
<ion-content class="ion-padding">
  Modal Content
</ion-content>`;
  }
});

async function presentModal() {
  // initialize controller
  const modalController = document.querySelector('ion-modal-controller');
  await modalController.componentOnReady();

  // create the modal with the `modal-page` component
  const modalElement = await modalController.create({
    component: 'modal-page'
  });

  // present the modal
  await modalElement.present();
}

Passing Data

During creation of a modal, data can be passed in through the componentProps. The previous example can be written to include data:

const modalElement = await modalController.create({
  component: 'modal-page',
  componentProps: {
    'firstName': 'Douglas',
    'lastName': 'Adams',
    'middleInitial': 'N'
  }
});

To get the data passed into the componentProps, query for the modal in the modal-page:

customElements.define('modal-page', class extends HTMLElement {
  connectedCallback() {
    const modalElement = document.querySelector('ion-modal');
    console.log(modalElement.componentProps.firstName);

    ...
  }
}

Dismissing a Modal

A modal can be dismissed by calling the dismiss method on the modal controller and optionally passing any data from the modal.

async function dismissModal() {
  await modalController.dismiss({
    'dismissed': true
  });
}

After being dismissed, the data can be read in through the onWillDismiss or onDidDismiss attached to the modal after creation:

const { data } = await modalElement.onWillDismiss();
console.log(data);

React

import React, { useState } from 'react';
import { IonModal, IonButton, IonContent } from '@ionic/react';

export const ModalExample: React.FunctionComponent = () => {
  const [showModal, setShowModal] = useState(false);

  return (
    <IonContent>
      <IonModal isOpen={showModal}>
        <p>This is modal content</p>
        <IonButton onClick={() => setShowModal(false)}>Close Modal</IonButton>
      </IonModal>
      <IonButton onClick={() => setShowModal(true)}>Show Modal</IonButton>
    </IonContent>
  );
};

Vue

<template>
  <div>
    <ion-header>
      <ion-toolbar>
        <ion-title>{{ title }}</ion-title>
      </ion-toolbar>
    </ion-header>
    <ion-content padding>
      {{ content }}
    </ion-content>
  </div>
</template>

<script>
export default {
  name: 'Modal',
  props: {
    title: { type: String, default: 'Super Modal' },
  },
  data() {
    return {
      content: 'Content',
    }
  },
}
</script>
<template>
  <ion-page class="ion-page" main>
    <ion-content class="ion-content" padding>
      <ion-button @click="openModal">Open Modal</ion-button>
    </ion-content>
  </ion-page>
</template>

<script>
import Modal from './modal.vue'

export default {
  methods: {
    openModal() {
      return this.$ionic.modalController
        .create({
          component: Modal,
          componentProps: {
            data: {
              content: 'New Content',
            },
            propsData: {
              title: 'New title',
            },
          },
        })
        .then(m => m.present())
    },
  },
}
</script>

Properties

Property Attribute Description Type Default
animated animated If true, the modal will animate. boolean true
backdropDismiss backdrop-dismiss If true, the modal will be dismissed when the backdrop is clicked. boolean true
component (required) component The component to display inside of the modal. Function | HTMLElement | null | string undefined
componentProps -- The data to pass to the modal component. undefined | { [key: string]: any; } undefined
cssClass css-class Additional classes to apply for custom CSS. If multiple classes are provided they should be separated by spaces. string | string[] | undefined undefined
enterAnimation -- Animation to use when the modal is presented. ((Animation: Animation, baseEl: any, opts?: any) => Promise<Animation>) | undefined undefined
keyboardClose keyboard-close If true, the keyboard will be automatically dismissed when the overlay is presented. boolean true
leaveAnimation -- Animation to use when the modal is dismissed. ((Animation: Animation, baseEl: any, opts?: any) => Promise<Animation>) | undefined undefined
mode mode The mode determines which platform styles to use. "ios" | "md" undefined
showBackdrop show-backdrop If true, a backdrop will be displayed behind the modal. boolean true

Events

Event Description Type
ionModalDidDismiss Emitted after the modal has dismissed. CustomEvent<OverlayEventDetail<any>>
ionModalDidPresent Emitted after the modal has presented. CustomEvent<void>
ionModalWillDismiss Emitted before the modal has dismissed. CustomEvent<OverlayEventDetail<any>>
ionModalWillPresent Emitted before the modal has presented. CustomEvent<void>

Methods

dismiss(data?: any, role?: string | undefined) => Promise<boolean>

Dismiss the modal overlay after it has been presented.

Returns

Type: Promise<boolean>

onDidDismiss() => Promise<OverlayEventDetail<any>>

Returns a promise that resolves when the modal did dismiss.

Returns

Type: Promise<OverlayEventDetail<any>>

onWillDismiss() => Promise<OverlayEventDetail<any>>

Returns a promise that resolves when the modal will dismiss.

Returns

Type: Promise<OverlayEventDetail<any>>

present() => Promise<void>

Present the modal overlay after it has been created.

Returns

Type: Promise<void>

CSS Custom Properties

Name Description
--background Background of the modal content
--border-color Border color of the modal content
--border-radius Border radius of the modal content
--border-style Border style of the modal content
--border-width Border width of the modal content
--height Height of the modal
--max-height Maximum height of the modal
--max-width Maximum width of the modal
--min-height Minimum height of the modal
--min-width Minimum width of the modal
--width Width of the modal

Dependencies

Depends on

Graph

graph TD;
  ion-modal --> ion-backdrop
  style ion-modal fill:#f9f,stroke:#333,stroke-width:4px

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