@angular/material
Version:
Angular Material
154 lines • 21.8 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { DOCUMENT } from '@angular/common';
import { ANIMATION_MODULE_TYPE, ElementRef, Injectable, NgZone, inject, } from '@angular/core';
import { MAT_RIPPLE_GLOBAL_OPTIONS, MatRipple } from '../ripple';
import { Platform } from '@angular/cdk/platform';
import * as i0 from "@angular/core";
/** The options for the MatRippleLoader's event listeners. */
const eventListenerOptions = { capture: true };
/** The events that should trigger the initialization of the ripple. */
const rippleInteractionEvents = ['focus', 'click', 'mouseenter', 'touchstart'];
/** The attribute attached to a component whose ripple has not yet been initialized. */
const matRippleUninitialized = 'mat-ripple-loader-uninitialized';
/** Additional classes that should be added to the ripple when it is rendered. */
const matRippleClassName = 'mat-ripple-loader-class-name';
/** Whether the ripple should be centered. */
const matRippleCentered = 'mat-ripple-loader-centered';
/** Whether the ripple should be disabled. */
const matRippleDisabled = 'mat-ripple-loader-disabled';
/**
* Handles attaching ripples on demand.
*
* This service allows us to avoid eagerly creating & attaching MatRipples.
* It works by creating & attaching a ripple only when a component is first interacted with.
*
* @docs-private
*/
export class MatRippleLoader {
constructor() {
this._document = inject(DOCUMENT, { optional: true });
this._animationMode = inject(ANIMATION_MODULE_TYPE, { optional: true });
this._globalRippleOptions = inject(MAT_RIPPLE_GLOBAL_OPTIONS, { optional: true });
this._platform = inject(Platform);
this._ngZone = inject(NgZone);
this._hosts = new Map();
/** Handles creating and attaching component internals when a component it is initially interacted with. */
this._onInteraction = (event) => {
if (!(event.target instanceof HTMLElement)) {
return;
}
const eventTarget = event.target;
// TODO(wagnermaciel): Consider batching these events to improve runtime performance.
const element = eventTarget.closest(`[${matRippleUninitialized}]`);
if (element) {
this._createRipple(element);
}
};
this._ngZone.runOutsideAngular(() => {
for (const event of rippleInteractionEvents) {
this._document?.addEventListener(event, this._onInteraction, eventListenerOptions);
}
});
}
ngOnDestroy() {
const hosts = this._hosts.keys();
for (const host of hosts) {
this.destroyRipple(host);
}
for (const event of rippleInteractionEvents) {
this._document?.removeEventListener(event, this._onInteraction, eventListenerOptions);
}
}
/**
* Configures the ripple that will be rendered by the ripple loader.
*
* Stores the given information about how the ripple should be configured on the host
* element so that it can later be retrived & used when the ripple is actually created.
*/
configureRipple(host, config) {
// Indicates that the ripple has not yet been rendered for this component.
host.setAttribute(matRippleUninitialized, '');
// Store the additional class name(s) that should be added to the ripple element.
if (config.className || !host.hasAttribute(matRippleClassName)) {
host.setAttribute(matRippleClassName, config.className || '');
}
// Store whether the ripple should be centered.
if (config.centered) {
host.setAttribute(matRippleCentered, '');
}
if (config.disabled) {
host.setAttribute(matRippleDisabled, '');
}
}
/** Returns the ripple instance for the given host element. */
getRipple(host) {
const ripple = this._hosts.get(host);
return ripple || this._createRipple(host);
}
/** Sets the disabled state on the ripple instance corresponding to the given host element. */
setDisabled(host, disabled) {
const ripple = this._hosts.get(host);
// If the ripple has already been instantiated, just disable it.
if (ripple) {
ripple.disabled = disabled;
return;
}
// Otherwise, set an attribute so we know what the
// disabled state should be when the ripple is initialized.
if (disabled) {
host.setAttribute(matRippleDisabled, '');
}
else {
host.removeAttribute(matRippleDisabled);
}
}
/** Creates a MatRipple and appends it to the given element. */
_createRipple(host) {
if (!this._document) {
return;
}
const existingRipple = this._hosts.get(host);
if (existingRipple) {
return existingRipple;
}
// Create the ripple element.
host.querySelector('.mat-ripple')?.remove();
const rippleEl = this._document.createElement('span');
rippleEl.classList.add('mat-ripple', host.getAttribute(matRippleClassName));
host.append(rippleEl);
// Create the MatRipple.
const ripple = new MatRipple(new ElementRef(rippleEl), this._ngZone, this._platform, this._globalRippleOptions ? this._globalRippleOptions : undefined, this._animationMode ? this._animationMode : undefined);
ripple._isInitialized = true;
ripple.trigger = host;
ripple.centered = host.hasAttribute(matRippleCentered);
ripple.disabled = host.hasAttribute(matRippleDisabled);
this.attachRipple(host, ripple);
return ripple;
}
attachRipple(host, ripple) {
host.removeAttribute(matRippleUninitialized);
this._hosts.set(host, ripple);
}
destroyRipple(host) {
const ripple = this._hosts.get(host);
if (ripple) {
// Since this directive is created manually, it needs to be destroyed manually too.
// tslint:disable-next-line:no-lifecycle-invocation
ripple.ngOnDestroy();
this._hosts.delete(host);
}
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.1.0-next.5", ngImport: i0, type: MatRippleLoader, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.1.0-next.5", ngImport: i0, type: MatRippleLoader, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.1.0-next.5", ngImport: i0, type: MatRippleLoader, decorators: [{
type: Injectable,
args: [{ providedIn: 'root' }]
}], ctorParameters: () => [] });
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {DOCUMENT} from '@angular/common';\nimport {\n  ANIMATION_MODULE_TYPE,\n  ElementRef,\n  Injectable,\n  NgZone,\n  OnDestroy,\n  inject,\n} from '@angular/core';\nimport {MAT_RIPPLE_GLOBAL_OPTIONS, MatRipple} from '../ripple';\nimport {Platform} from '@angular/cdk/platform';\n\n/** The options for the MatRippleLoader's event listeners. */\nconst eventListenerOptions = {capture: true};\n\n/** The events that should trigger the initialization of the ripple. */\nconst rippleInteractionEvents = ['focus', 'click', 'mouseenter', 'touchstart'];\n\n/** The attribute attached to a component whose ripple has not yet been initialized. */\nconst matRippleUninitialized = 'mat-ripple-loader-uninitialized';\n\n/** Additional classes that should be added to the ripple when it is rendered. */\nconst matRippleClassName = 'mat-ripple-loader-class-name';\n\n/** Whether the ripple should be centered. */\nconst matRippleCentered = 'mat-ripple-loader-centered';\n\n/** Whether the ripple should be disabled. */\nconst matRippleDisabled = 'mat-ripple-loader-disabled';\n\n/**\n * Handles attaching ripples on demand.\n *\n * This service allows us to avoid eagerly creating & attaching MatRipples.\n * It works by creating & attaching a ripple only when a component is first interacted with.\n *\n * @docs-private\n */\n@Injectable({providedIn: 'root'})\nexport class MatRippleLoader implements OnDestroy {\n  private _document = inject(DOCUMENT, {optional: true});\n  private _animationMode = inject(ANIMATION_MODULE_TYPE, {optional: true});\n  private _globalRippleOptions = inject(MAT_RIPPLE_GLOBAL_OPTIONS, {optional: true});\n  private _platform = inject(Platform);\n  private _ngZone = inject(NgZone);\n  private _hosts = new Map<HTMLElement, MatRipple>();\n\n  constructor() {\n    this._ngZone.runOutsideAngular(() => {\n      for (const event of rippleInteractionEvents) {\n        this._document?.addEventListener(event, this._onInteraction, eventListenerOptions);\n      }\n    });\n  }\n\n  ngOnDestroy() {\n    const hosts = this._hosts.keys();\n\n    for (const host of hosts) {\n      this.destroyRipple(host);\n    }\n\n    for (const event of rippleInteractionEvents) {\n      this._document?.removeEventListener(event, this._onInteraction, eventListenerOptions);\n    }\n  }\n\n  /**\n   * Configures the ripple that will be rendered by the ripple loader.\n   *\n   * Stores the given information about how the ripple should be configured on the host\n   * element so that it can later be retrived & used when the ripple is actually created.\n   */\n  configureRipple(\n    host: HTMLElement,\n    config: {\n      className?: string;\n      centered?: boolean;\n      disabled?: boolean;\n    },\n  ): void {\n    // Indicates that the ripple has not yet been rendered for this component.\n    host.setAttribute(matRippleUninitialized, '');\n\n    // Store the additional class name(s) that should be added to the ripple element.\n    if (config.className || !host.hasAttribute(matRippleClassName)) {\n      host.setAttribute(matRippleClassName, config.className || '');\n    }\n\n    // Store whether the ripple should be centered.\n    if (config.centered) {\n      host.setAttribute(matRippleCentered, '');\n    }\n\n    if (config.disabled) {\n      host.setAttribute(matRippleDisabled, '');\n    }\n  }\n\n  /** Returns the ripple instance for the given host element. */\n  getRipple(host: HTMLElement): MatRipple | undefined {\n    const ripple = this._hosts.get(host);\n    return ripple || this._createRipple(host);\n  }\n\n  /** Sets the disabled state on the ripple instance corresponding to the given host element. */\n  setDisabled(host: HTMLElement, disabled: boolean): void {\n    const ripple = this._hosts.get(host);\n\n    // If the ripple has already been instantiated, just disable it.\n    if (ripple) {\n      ripple.disabled = disabled;\n      return;\n    }\n\n    // Otherwise, set an attribute so we know what the\n    // disabled state should be when the ripple is initialized.\n    if (disabled) {\n      host.setAttribute(matRippleDisabled, '');\n    } else {\n      host.removeAttribute(matRippleDisabled);\n    }\n  }\n\n  /** Handles creating and attaching component internals when a component it is initially interacted with. */\n  private _onInteraction = (event: Event) => {\n    if (!(event.target instanceof HTMLElement)) {\n      return;\n    }\n    const eventTarget = event.target as HTMLElement;\n\n    // TODO(wagnermaciel): Consider batching these events to improve runtime performance.\n\n    const element = eventTarget.closest(`[${matRippleUninitialized}]`);\n    if (element) {\n      this._createRipple(element as HTMLElement);\n    }\n  };\n\n  /** Creates a MatRipple and appends it to the given element. */\n  private _createRipple(host: HTMLElement): MatRipple | undefined {\n    if (!this._document) {\n      return;\n    }\n\n    const existingRipple = this._hosts.get(host);\n    if (existingRipple) {\n      return existingRipple;\n    }\n\n    // Create the ripple element.\n    host.querySelector('.mat-ripple')?.remove();\n    const rippleEl = this._document.createElement('span');\n    rippleEl.classList.add('mat-ripple', host.getAttribute(matRippleClassName)!);\n    host.append(rippleEl);\n\n    // Create the MatRipple.\n    const ripple = new MatRipple(\n      new ElementRef(rippleEl),\n      this._ngZone,\n      this._platform,\n      this._globalRippleOptions ? this._globalRippleOptions : undefined,\n      this._animationMode ? this._animationMode : undefined,\n    );\n    ripple._isInitialized = true;\n    ripple.trigger = host;\n    ripple.centered = host.hasAttribute(matRippleCentered);\n    ripple.disabled = host.hasAttribute(matRippleDisabled);\n    this.attachRipple(host, ripple);\n    return ripple;\n  }\n\n  attachRipple(host: HTMLElement, ripple: MatRipple): void {\n    host.removeAttribute(matRippleUninitialized);\n    this._hosts.set(host, ripple);\n  }\n\n  destroyRipple(host: HTMLElement) {\n    const ripple = this._hosts.get(host);\n\n    if (ripple) {\n      // Since this directive is created manually, it needs to be destroyed manually too.\n      // tslint:disable-next-line:no-lifecycle-invocation\n      ripple.ngOnDestroy();\n      this._hosts.delete(host);\n    }\n  }\n}\n"]}