Files
Liam DeBeasi e833ad4649 docs(overlays): clarify how to remove an overlay (#28989)
In https://github.com/ionic-team/ionic-framework/issues/28981 there was
some confusion surrounding how to remove an overlay from the DOM if it
was never presented. The `dismiss` method will remove the overlay from
the DOM, but only if the overlay is visible. Otherwise, it's a no-op.

This PR updates the `dismiss` method docs for each overlay component to
note that developers can use the browser's remove method to remove the
element from the DOM.
2024-02-08 18:36:24 +00:00

374 lines
11 KiB
TypeScript

import type { ComponentInterface, EventEmitter } from '@stencil/core';
import { Watch, Component, Element, Event, Host, Method, Prop, h } from '@stencil/core';
import { ENABLE_HTML_CONTENT_DEFAULT } from '@utils/config';
import { raf } from '@utils/helpers';
import { createLockController } from '@utils/lock-controller';
import {
BACKDROP,
dismiss,
eventMethod,
prepareOverlay,
present,
createDelegateController,
createTriggerController,
setOverlayId,
} from '@utils/overlays';
import { sanitizeDOMString } from '@utils/sanitization';
import { getClassMap } from '@utils/theme';
import { config } from '../../global/config';
import { getIonMode } from '../../global/ionic-global';
import type { AnimationBuilder, FrameworkDelegate, OverlayInterface } from '../../interface';
import type { OverlayEventDetail } from '../../utils/overlays-interface';
import type { IonicSafeString } from '../../utils/sanitization';
import type { SpinnerTypes } from '../spinner/spinner-configs';
import { iosEnterAnimation } from './animations/ios.enter';
import { iosLeaveAnimation } from './animations/ios.leave';
import { mdEnterAnimation } from './animations/md.enter';
import { mdLeaveAnimation } from './animations/md.leave';
// TODO(FW-2832): types
/**
* @virtualProp {"ios" | "md"} mode - The mode determines which platform styles to use.
*/
@Component({
tag: 'ion-loading',
styleUrls: {
ios: 'loading.ios.scss',
md: 'loading.md.scss',
},
scoped: true,
})
export class Loading implements ComponentInterface, OverlayInterface {
private readonly delegateController = createDelegateController(this);
private readonly lockController = createLockController();
private readonly triggerController = createTriggerController();
private customHTMLEnabled = config.get('innerHTMLTemplatesEnabled', ENABLE_HTML_CONTENT_DEFAULT);
private durationTimeout?: ReturnType<typeof setTimeout>;
presented = false;
lastFocus?: HTMLElement;
@Element() el!: HTMLIonLoadingElement;
/** @internal */
@Prop() overlayIndex!: number;
/** @internal */
@Prop() delegate?: FrameworkDelegate;
/** @internal */
@Prop() hasController = false;
/**
* If `true`, the keyboard will be automatically dismissed when the overlay is presented.
*/
@Prop() keyboardClose = true;
/**
* Animation to use when the loading indicator is presented.
*/
@Prop() enterAnimation?: AnimationBuilder;
/**
* Animation to use when the loading indicator is dismissed.
*/
@Prop() leaveAnimation?: AnimationBuilder;
/**
* Optional text content to display in the loading indicator.
*
* This property accepts custom HTML as a string.
* Content is parsed as plaintext by default.
* `innerHTMLTemplatesEnabled` must be set to `true` in the Ionic config
* before custom HTML can be used.
*/
@Prop() message?: string | IonicSafeString;
/**
* Additional classes to apply for custom CSS. If multiple classes are
* provided they should be separated by spaces.
*/
@Prop() cssClass?: string | string[];
/**
* Number of milliseconds to wait before dismissing the loading indicator.
*/
@Prop() duration = 0;
/**
* If `true`, the loading indicator will be dismissed when the backdrop is clicked.
*/
@Prop() backdropDismiss = false;
/**
* If `true`, a backdrop will be displayed behind the loading indicator.
*/
@Prop() showBackdrop = true;
/**
* The name of the spinner to display.
*/
@Prop({ mutable: true }) spinner?: SpinnerTypes | null;
/**
* If `true`, the loading indicator will be translucent.
* Only applies when the mode is `"ios"` and the device supports
* [`backdrop-filter`](https://developer.mozilla.org/en-US/docs/Web/CSS/backdrop-filter#Browser_compatibility).
*/
@Prop() translucent = false;
/**
* If `true`, the loading indicator will animate.
*/
@Prop() animated = true;
/**
* Additional attributes to pass to the loader.
*/
@Prop() htmlAttributes?: { [key: string]: any };
/**
* If `true`, the loading indicator will open. If `false`, the loading indicator will close.
* Use this if you need finer grained control over presentation, otherwise
* just use the loadingController or the `trigger` property.
* Note: `isOpen` will not automatically be set back to `false` when
* the loading indicator dismisses. You will need to do that in your code.
*/
@Prop() isOpen = false;
@Watch('isOpen')
onIsOpenChange(newValue: boolean, oldValue: boolean) {
if (newValue === true && oldValue === false) {
this.present();
} else if (newValue === false && oldValue === true) {
this.dismiss();
}
}
/**
* An ID corresponding to the trigger element that
* causes the loading indicator to open when clicked.
*/
@Prop() trigger: string | undefined;
@Watch('trigger')
triggerChanged() {
const { trigger, el, triggerController } = this;
if (trigger) {
triggerController.addClickListener(el, trigger);
}
}
/**
* Emitted after the loading has presented.
*/
@Event({ eventName: 'ionLoadingDidPresent' }) didPresent!: EventEmitter<void>;
/**
* Emitted before the loading has presented.
*/
@Event({ eventName: 'ionLoadingWillPresent' }) willPresent!: EventEmitter<void>;
/**
* Emitted before the loading has dismissed.
*/
@Event({ eventName: 'ionLoadingWillDismiss' }) willDismiss!: EventEmitter<OverlayEventDetail>;
/**
* Emitted after the loading has dismissed.
*/
@Event({ eventName: 'ionLoadingDidDismiss' }) didDismiss!: EventEmitter<OverlayEventDetail>;
/**
* Emitted after the loading indicator has presented.
* Shorthand for ionLoadingWillDismiss.
*/
@Event({ eventName: 'didPresent' }) didPresentShorthand!: EventEmitter<void>;
/**
* Emitted before the loading indicator has presented.
* Shorthand for ionLoadingWillPresent.
*/
@Event({ eventName: 'willPresent' }) willPresentShorthand!: EventEmitter<void>;
/**
* Emitted before the loading indicator has dismissed.
* Shorthand for ionLoadingWillDismiss.
*/
@Event({ eventName: 'willDismiss' }) willDismissShorthand!: EventEmitter<OverlayEventDetail>;
/**
* Emitted after the loading indicator has dismissed.
* Shorthand for ionLoadingDidDismiss.
*/
@Event({ eventName: 'didDismiss' }) didDismissShorthand!: EventEmitter<OverlayEventDetail>;
connectedCallback() {
prepareOverlay(this.el);
this.triggerChanged();
}
componentWillLoad() {
if (this.spinner === undefined) {
const mode = getIonMode(this);
this.spinner = config.get('loadingSpinner', config.get('spinner', mode === 'ios' ? 'lines' : 'crescent'));
}
setOverlayId(this.el);
}
componentDidLoad() {
/**
* If loading indicator was rendered with isOpen="true"
* then we should open loading indicator immediately.
*/
if (this.isOpen === true) {
raf(() => this.present());
}
/**
* When binding values in frameworks such as Angular
* it is possible for the value to be set after the Web Component
* initializes but before the value watcher is set up in Stencil.
* As a result, the watcher callback may not be fired.
* We work around this by manually calling the watcher
* callback when the component has loaded and the watcher
* is configured.
*/
this.triggerChanged();
}
disconnectedCallback() {
this.triggerController.removeClickListener();
}
/**
* Present the loading overlay after it has been created.
*/
@Method()
async present(): Promise<void> {
const unlock = await this.lockController.lock();
await this.delegateController.attachViewToDom();
await present(this, 'loadingEnter', iosEnterAnimation, mdEnterAnimation);
if (this.duration > 0) {
this.durationTimeout = setTimeout(() => this.dismiss(), this.duration + 10);
}
unlock();
}
/**
* Dismiss the loading overlay after it has been presented.
*
* @param data Any data to emit in the dismiss events.
* @param role The role of the element that is dismissing the loading.
* This can be useful in a button handler for determining which button was
* clicked to dismiss the loading.
* Some examples include: ``"cancel"`, `"destructive"`, "selected"`, and `"backdrop"`.
*
* This is a no-op if the overlay has not been presented yet. If you want
* to remove an overlay from the DOM that was never presented, use the
* [remove](https://developer.mozilla.org/en-US/docs/Web/API/Element/remove) method.
*/
@Method()
async dismiss(data?: any, role?: string): Promise<boolean> {
const unlock = await this.lockController.lock();
if (this.durationTimeout) {
clearTimeout(this.durationTimeout);
}
const dismissed = await dismiss(this, data, role, 'loadingLeave', iosLeaveAnimation, mdLeaveAnimation);
if (dismissed) {
this.delegateController.removeViewFromDom();
}
unlock();
return dismissed;
}
/**
* Returns a promise that resolves when the loading did dismiss.
*/
@Method()
onDidDismiss<T = any>(): Promise<OverlayEventDetail<T>> {
return eventMethod(this.el, 'ionLoadingDidDismiss');
}
/**
* Returns a promise that resolves when the loading will dismiss.
*/
@Method()
onWillDismiss<T = any>(): Promise<OverlayEventDetail<T>> {
return eventMethod(this.el, 'ionLoadingWillDismiss');
}
private onBackdropTap = () => {
this.dismiss(undefined, BACKDROP);
};
private renderLoadingMessage(msgId: string) {
const { customHTMLEnabled, message } = this;
if (customHTMLEnabled) {
return <div class="loading-content" id={msgId} innerHTML={sanitizeDOMString(message)}></div>;
}
return (
<div class="loading-content" id={msgId}>
{message}
</div>
);
}
render() {
const { message, spinner, htmlAttributes, overlayIndex } = this;
const mode = getIonMode(this);
const msgId = `loading-${overlayIndex}-msg`;
/**
* If the message is defined, use that as the label.
* Otherwise, don't set aria-labelledby.
*/
const ariaLabelledBy = message !== undefined ? msgId : null;
return (
<Host
role="dialog"
aria-modal="true"
aria-labelledby={ariaLabelledBy}
tabindex="-1"
{...(htmlAttributes as any)}
style={{
zIndex: `${40000 + this.overlayIndex}`,
}}
onIonBackdropTap={this.onBackdropTap}
class={{
...getClassMap(this.cssClass),
[mode]: true,
'overlay-hidden': true,
'loading-translucent': this.translucent,
}}
>
<ion-backdrop visible={this.showBackdrop} tappable={this.backdropDismiss} />
<div tabindex="0"></div>
<div class="loading-wrapper ion-overlay-wrapper">
{spinner && (
<div class="loading-spinner">
<ion-spinner name={spinner} aria-hidden="true" />
</div>
)}
{message !== undefined && this.renderLoadingMessage(msgId)}
</div>
<div tabindex="0"></div>
</Host>
);
}
}