ion-popover
A Popover is a dialog that appears on top of the current page. It can be used for anything, but generally it is used for overflow actions that don't fit in the navigation bar.
Presenting
To present a popover, call the present
method on a popover instance. In order to position the popover relative to the element clicked, a click event needs to be passed into the options of the the
present
method. If the event is not passed, the popover will be positioned in the center of the viewport.
Customization
Popover uses scoped encapsulation, which means it will automatically scope its CSS by appending each of the styles with an additional class at runtime. Overriding scoped selectors in CSS requires a higher specificity selector.
We recommend passing a custom class to cssClass
in the
create
method and using that to add custom styles to the host and inner elements. This property can also accept multiple classes separated by spaces. View the
cssClass
.
/* DOES NOT WORK - not specific enough */
.popover-content {
background: #222;
}
/* Works - pass "my-custom-class" in cssClass to increase specificity */
.my-custom-class .popover-content {
background: #222;
}
Any of the defined
.my-custom-class {
--background: #222;
}
If you are building an Ionic Angular app, the styles need to be added to a global stylesheet file. Read
Style Placement in the Angular section below for more information.
Usage
import { Component } from '@angular/core';
import { PopoverController } from '@ionic/angular';
import { PopoverComponent } from '../../component/popover/popover.component';
@Component({
selector: 'popover-example',
templateUrl: 'popover-example.html',
styleUrls: ['./popover-example.css']
})
export class PopoverExample {
constructor(public popoverController: PopoverController) {}
async presentPopover(ev: any) {
const popover = await this.popoverController.create({
component: PopoverComponent,
cssClass: 'my-custom-class',
event: ev,
translucent: true
});
return await popover.present();
}
}
Style Placement
In Angular, the CSS of a specific page is scoped only to elements of that page. Even though the Popover can be presented from within a page, the
ion-popover
element is appended outside of the current page. This means that any custom styles need to go in a global stylesheet file. In an Ionic Angular starter this can be the
src/global.scss
file or you can register a new global style file by
adding to the styles
build option in
angular.json
.
class PopoverExamplePage extends HTMLElement {
constructor() {
super();
}
connectedCallback() {
this.innerHTML = `
<ion-content>
<ion-list>
<ion-list-header><ion-label>Ionic</ion-label></ion-list-header>
<ion-item button><ion-label>Item 0</ion-label></ion-item>
<ion-item button><ion-label>Item 1</ion-label></ion-item>
<ion-item button><ion-label>Item 2</ion-label></ion-item>
<ion-item button><ion-label>Item 3</ion-label></ion-item>
</ion-list>
</ion-content>
`;
}
}
customElements.define('popover-example-page', PopoverExamplePage);
function presentPopover(ev) {
const popover = Object.assign(document.createElement('ion-popover'), {
component: 'popover-example-page',
cssClass: 'my-custom-class',
event: ev,
translucent: true
});
document.body.appendChild(popover);
return popover.present();
}
import React, { useState } from 'react';
import { IonPopover, IonButton } from '@ionic/react';
export const PopoverExample: React.FC = () => {
const [popoverState, setShowPopover] = useState({ showPopover: false, event: undefined });
return (
<>
<IonPopover
cssClass='my-custom-class'
event={popoverState.event}
isOpen={popoverState.showPopover}
onDidDismiss={() => setShowPopover({ showPopover: false, event: undefined })}
>
<p>This is popover content</p>
</IonPopover>
<IonButton onClick={
(e: any) => {
e.persist();
setShowPopover({ showPopover: true, event: e })
}}
>
Show Popover
</IonButton>
</>
);
};
import { Component, h } from '@stencil/core';
import { popoverController } from '@ionic/core';
@Component({
tag: 'popover-example',
styleUrl: 'popover-example.css'
})
export class PopoverExample {
async presentPopover(ev: any) {
const popover = await popoverController.create({
component: 'page-popover',
cssClass: 'my-custom-class',
event: ev,
translucent: true
});
return await popover.present();
}
render() {
return [
<ion-content>
<ion-button onClick={(ev) => this.presentPopover(ev)}>Present Popover</ion-button>
</ion-content>
];
}
}
import { Component, h } from '@stencil/core';
@Component({
tag: 'page-popover',
styleUrl: 'page-popover.css',
})
export class PagePopover {
render() {
return [
<ion-list>
<ion-item>
<ion-label>Documentation</ion-label>
</ion-item>
<ion-item>
<ion-label>Feedback</ion-label>
</ion-item>
<ion-item>
<ion-label>Settings</ion-label>
</ion-item>
</ion-list>
];
}
}
<template>
<ion-content class="ion-padding">
Popover Content
</ion-content>
</template>
<script>
import { IonContent } from '@ionic/vue';
import { defineComponent } from 'vue';
export default defineComponent({
name: 'Popover',
components: { IonContent }
});
</script>
<template>
<ion-page>
<ion-content class="ion-padding">
<ion-button @click="openPopover">Open Popover</ion-button>
</ion-content>
</ion-page>
</template>
<script>
import { IonButton, IonContent, IonPage, popoverController } from '@ionic/vue';
import Popver from './popover.vue'
export default {
components: { IonButton, IonContent, IonPage },
methods: {
async openPopover(ev: Event) {
const popover = await popoverController
.create({
component: Popover,
cssClass: 'my-custom-class',
event: ev,
translucent: true
})
return popover.present();
},
},
}
</script>
Developers can also use this component directly in their template:
<template>
<ion-button @click="setOpen(true, $event)">Show Popover</ion-button>
<ion-popover
:is-open="isOpenRef"
css-class="my-custom-class"
:event="event"
:translucent="true"
@onDidDismiss="setOpen(false)"
>
<Popover></Popover>
</ion-popover>
</template>
<script>
import { IonButton, IonPopover } from '@ionic/vue';
import { defineComponent, ref } from 'vue';
import Popver from './popover.vue'
export default defineComponent({
components: { IonButton, IonPopover, Popover },
setup() {
const isOpenRef = ref(false);
const event = ref();
const setOpen = (state: boolean, event?: Event) => {
event.value = event;
isOpenRef.value = state;
}
return { isOpenRef, setOpen, event }
}
});
</script>
Properties
animated | |
---|---|
Description | If |
Attribute | animated |
Type | boolean |
Default | true |
backdropDismiss | |
Description | If |
Attribute | backdrop-dismiss |
Type | boolean |
Default | true |
component | |
Description | The component to display inside of the popover. |
Attribute | component |
Type | Function | HTMLElement | null | string |
componentProps | |
Description | The data to pass to the popover component. |
Type | undefined | { [key: string]: any; } |
cssClass | |
Description | Additional classes to apply for custom CSS. If multiple classes are provided they should be separated by spaces. |
Attribute | css-class |
Type | string | string[] | undefined |
enterAnimation | |
Description | Animation to use when the popover is presented. |
Type | ((baseEl: any, opts?: any) => Animation) | undefined |
event | |
Description | The event to pass to the popover animation. |
Attribute | event |
Type | any |
keyboardClose | |
Description | If |
Attribute | keyboard-close |
Type | boolean |
Default | true |
leaveAnimation | |
Description | Animation to use when the popover is dismissed. |
Type | ((baseEl: any, opts?: any) => Animation) | undefined |
mode | |
Description | The mode determines which platform styles to use. |
Attribute | mode |
Type | "ios" | "md" |
showBackdrop | |
Description | If |
Attribute | show-backdrop |
Type | boolean |
Default | true |
translucent | |
Description | If |
Attribute | translucent |
Type | boolean |
Default | false |
Events
Name | Description |
---|---|
ionPopoverDidDismiss | Emitted after the popover has dismissed. |
ionPopoverDidPresent | Emitted after the popover has presented. |
ionPopoverWillDismiss | Emitted before the popover has dismissed. |
ionPopoverWillPresent | Emitted before the popover has presented. |
Methods
dismiss | |
---|---|
Description | Dismiss the popover overlay after it has been presented. |
Signature | dismiss(data?: any, role?: string | undefined) => Promise<boolean> |
onDidDismiss | |
Description | Returns a promise that resolves when the popover did dismiss. |
Signature | onDidDismiss<T = any>() => Promise<OverlayEventDetail<T>> |
onWillDismiss | |
Description | Returns a promise that resolves when the popover will dismiss. |
Signature | onWillDismiss<T = any>() => Promise<OverlayEventDetail<T>> |
present | |
Description | Present the popover overlay after it has been created. |
Signature | present() => Promise<void> |
CSS Custom Properties
Name | Description |
---|---|
--backdrop-opacity | Opacity of the backdrop |
--background | Background of the popover |
--box-shadow | Box shadow of the popover |
--height | Height of the popover |
--max-height | Maximum height of the popover |
--max-width | Maximum width of the popover |
--min-height | Minimum height of the popover |
--min-width | Minimum width of the popover |
--width | Width of the popover |