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136 lines
4.6 KiB
TypeScript
136 lines
4.6 KiB
TypeScript
/*
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* Copyright 2020 Adobe. All rights reserved.
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* This file is licensed to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License. You may obtain a copy
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* of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under
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* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
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* OF ANY KIND, either express or implied. See the License for the specific language
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* governing permissions and limitations under the License.
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*/
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import {DOMAttributes, FocusableElement, LongPressEvent} from '@react-types/shared';
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import {focusWithoutScrolling, getOwnerDocument, mergeProps, useDescription, useGlobalListeners} from '@react-aria/utils';
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import {usePress} from './usePress';
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import {useRef} from 'react';
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export interface LongPressProps {
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/** Whether long press events should be disabled. */
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isDisabled?: boolean,
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/** Handler that is called when a long press interaction starts. */
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onLongPressStart?: (e: LongPressEvent) => void,
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/**
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* Handler that is called when a long press interaction ends, either
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* over the target or when the pointer leaves the target.
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*/
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onLongPressEnd?: (e: LongPressEvent) => void,
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/**
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* Handler that is called when the threshold time is met while
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* the press is over the target.
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*/
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onLongPress?: (e: LongPressEvent) => void,
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/**
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* The amount of time in milliseconds to wait before triggering a long press.
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* @default 500ms
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*/
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threshold?: number,
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/**
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* A description for assistive techology users indicating that a long press
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* action is available, e.g. "Long press to open menu".
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*/
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accessibilityDescription?: string
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}
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export interface LongPressResult {
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/** Props to spread on the target element. */
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longPressProps: DOMAttributes
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}
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const DEFAULT_THRESHOLD = 500;
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/**
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* Handles long press interactions across mouse and touch devices. Supports a customizable time threshold,
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* accessibility description, and normalizes behavior across browsers and devices.
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*/
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export function useLongPress(props: LongPressProps): LongPressResult {
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let {
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isDisabled,
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onLongPressStart,
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onLongPressEnd,
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onLongPress,
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threshold = DEFAULT_THRESHOLD,
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accessibilityDescription
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} = props;
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const timeRef = useRef<ReturnType<typeof setTimeout> | undefined>(undefined);
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let {addGlobalListener, removeGlobalListener} = useGlobalListeners();
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let {pressProps} = usePress({
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isDisabled,
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onPressStart(e) {
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e.continuePropagation();
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if (e.pointerType === 'mouse' || e.pointerType === 'touch') {
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if (onLongPressStart) {
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onLongPressStart({
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...e,
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type: 'longpressstart'
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});
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}
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timeRef.current = setTimeout(() => {
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// Prevent other usePress handlers from also handling this event.
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e.target.dispatchEvent(new PointerEvent('pointercancel', {bubbles: true}));
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// Ensure target is focused. On touch devices, browsers typically focus on pointer up.
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if (getOwnerDocument(e.target).activeElement !== e.target) {
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focusWithoutScrolling(e.target as FocusableElement);
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}
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if (onLongPress) {
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onLongPress({
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...e,
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type: 'longpress'
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});
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}
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timeRef.current = undefined;
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}, threshold);
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// Prevent context menu, which may be opened on long press on touch devices
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if (e.pointerType === 'touch') {
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let onContextMenu = e => {
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e.preventDefault();
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};
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addGlobalListener(e.target, 'contextmenu', onContextMenu, {once: true});
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addGlobalListener(window, 'pointerup', () => {
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// If no contextmenu event is fired quickly after pointerup, remove the handler
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// so future context menu events outside a long press are not prevented.
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setTimeout(() => {
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removeGlobalListener(e.target, 'contextmenu', onContextMenu);
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}, 30);
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}, {once: true});
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}
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}
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},
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onPressEnd(e) {
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if (timeRef.current) {
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clearTimeout(timeRef.current);
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}
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if (onLongPressEnd && (e.pointerType === 'mouse' || e.pointerType === 'touch')) {
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onLongPressEnd({
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...e,
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type: 'longpressend'
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});
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}
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}
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});
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let descriptionProps = useDescription(onLongPress && !isDisabled ? accessibilityDescription : undefined);
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return {
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longPressProps: mergeProps(pressProps, descriptionProps)
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};
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}
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