1677 lines
60 KiB
JavaScript
1677 lines
60 KiB
JavaScript
/** @license React v16.7.0
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* react-dom-unstable-native-dependencies.development.js
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*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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if (process.env.NODE_ENV !== "production") {
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(function() {
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'use strict';
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var ReactDOM = require('react-dom');
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var _assign = require('object-assign');
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/**
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* Use invariant() to assert state which your program assumes to be true.
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*
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* Provide sprintf-style format (only %s is supported) and arguments
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* to provide information about what broke and what you were
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* expecting.
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*
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* The invariant message will be stripped in production, but the invariant
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* will remain to ensure logic does not differ in production.
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*/
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var validateFormat = function () {};
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{
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validateFormat = function (format) {
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if (format === undefined) {
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throw new Error('invariant requires an error message argument');
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}
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};
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}
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function invariant(condition, format, a, b, c, d, e, f) {
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validateFormat(format);
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if (!condition) {
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var error = void 0;
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if (format === undefined) {
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error = new Error('Minified exception occurred; use the non-minified dev environment ' + 'for the full error message and additional helpful warnings.');
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} else {
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var args = [a, b, c, d, e, f];
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var argIndex = 0;
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error = new Error(format.replace(/%s/g, function () {
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return args[argIndex++];
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}));
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error.name = 'Invariant Violation';
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}
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error.framesToPop = 1; // we don't care about invariant's own frame
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throw error;
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}
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}
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// Relying on the `invariant()` implementation lets us
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// preserve the format and params in the www builds.
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{
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// In DEV mode, we swap out invokeGuardedCallback for a special version
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// that plays more nicely with the browser's DevTools. The idea is to preserve
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// "Pause on exceptions" behavior. Because React wraps all user-provided
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// functions in invokeGuardedCallback, and the production version of
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// invokeGuardedCallback uses a try-catch, all user exceptions are treated
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// like caught exceptions, and the DevTools won't pause unless the developer
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// takes the extra step of enabling pause on caught exceptions. This is
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// untintuitive, though, because even though React has caught the error, from
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// the developer's perspective, the error is uncaught.
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//
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// To preserve the expected "Pause on exceptions" behavior, we don't use a
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// try-catch in DEV. Instead, we synchronously dispatch a fake event to a fake
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// DOM node, and call the user-provided callback from inside an event handler
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// for that fake event. If the callback throws, the error is "captured" using
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// a global event handler. But because the error happens in a different
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// event loop context, it does not interrupt the normal program flow.
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// Effectively, this gives us try-catch behavior without actually using
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// try-catch. Neat!
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// Check that the browser supports the APIs we need to implement our special
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// DEV version of invokeGuardedCallback
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if (typeof window !== 'undefined' && typeof window.dispatchEvent === 'function' && typeof document !== 'undefined' && typeof document.createEvent === 'function') {
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var fakeNode = document.createElement('react');
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}
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}
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/**
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* Call a function while guarding against errors that happens within it.
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* Returns an error if it throws, otherwise null.
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*
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* In production, this is implemented using a try-catch. The reason we don't
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* use a try-catch directly is so that we can swap out a different
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* implementation in DEV mode.
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*
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* @param {String} name of the guard to use for logging or debugging
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* @param {Function} func The function to invoke
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* @param {*} context The context to use when calling the function
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* @param {...*} args Arguments for function
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*/
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/**
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* Same as invokeGuardedCallback, but instead of returning an error, it stores
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* it in a global so it can be rethrown by `rethrowCaughtError` later.
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* TODO: See if caughtError and rethrowError can be unified.
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*
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* @param {String} name of the guard to use for logging or debugging
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* @param {Function} func The function to invoke
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* @param {*} context The context to use when calling the function
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* @param {...*} args Arguments for function
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*/
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/**
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* During execution of guarded functions we will capture the first error which
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* we will rethrow to be handled by the top level error handler.
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*/
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/**
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* Similar to invariant but only logs a warning if the condition is not met.
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* This can be used to log issues in development environments in critical
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* paths. Removing the logging code for production environments will keep the
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* same logic and follow the same code paths.
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*/
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var warningWithoutStack = function () {};
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{
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warningWithoutStack = function (condition, format) {
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for (var _len = arguments.length, args = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
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args[_key - 2] = arguments[_key];
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}
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if (format === undefined) {
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throw new Error('`warningWithoutStack(condition, format, ...args)` requires a warning ' + 'message argument');
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}
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if (args.length > 8) {
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// Check before the condition to catch violations early.
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throw new Error('warningWithoutStack() currently supports at most 8 arguments.');
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}
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if (condition) {
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return;
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}
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if (typeof console !== 'undefined') {
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var argsWithFormat = args.map(function (item) {
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return '' + item;
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});
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argsWithFormat.unshift('Warning: ' + format);
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// We intentionally don't use spread (or .apply) directly because it
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// breaks IE9: https://github.com/facebook/react/issues/13610
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Function.prototype.apply.call(console.error, console, argsWithFormat);
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}
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try {
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// --- Welcome to debugging React ---
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// This error was thrown as a convenience so that you can use this stack
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// to find the callsite that caused this warning to fire.
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var argIndex = 0;
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var message = 'Warning: ' + format.replace(/%s/g, function () {
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return args[argIndex++];
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});
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throw new Error(message);
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} catch (x) {}
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};
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}
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var warningWithoutStack$1 = warningWithoutStack;
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var getFiberCurrentPropsFromNode$1 = null;
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var getInstanceFromNode$1 = null;
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var getNodeFromInstance$1 = null;
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function setComponentTree(getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl) {
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getFiberCurrentPropsFromNode$1 = getFiberCurrentPropsFromNodeImpl;
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getInstanceFromNode$1 = getInstanceFromNodeImpl;
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getNodeFromInstance$1 = getNodeFromInstanceImpl;
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{
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!(getNodeFromInstance$1 && getInstanceFromNode$1) ? warningWithoutStack$1(false, 'EventPluginUtils.setComponentTree(...): Injected ' + 'module is missing getNodeFromInstance or getInstanceFromNode.') : void 0;
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}
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}
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var validateEventDispatches = void 0;
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{
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validateEventDispatches = function (event) {
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var dispatchListeners = event._dispatchListeners;
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var dispatchInstances = event._dispatchInstances;
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var listenersIsArr = Array.isArray(dispatchListeners);
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var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0;
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var instancesIsArr = Array.isArray(dispatchInstances);
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var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0;
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!(instancesIsArr === listenersIsArr && instancesLen === listenersLen) ? warningWithoutStack$1(false, 'EventPluginUtils: Invalid `event`.') : void 0;
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};
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}
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/**
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* Standard/simple iteration through an event's collected dispatches.
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*/
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/**
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* Standard/simple iteration through an event's collected dispatches, but stops
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* at the first dispatch execution returning true, and returns that id.
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*
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* @return {?string} id of the first dispatch execution who's listener returns
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* true, or null if no listener returned true.
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*/
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function executeDispatchesInOrderStopAtTrueImpl(event) {
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var dispatchListeners = event._dispatchListeners;
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var dispatchInstances = event._dispatchInstances;
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{
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validateEventDispatches(event);
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}
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if (Array.isArray(dispatchListeners)) {
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for (var i = 0; i < dispatchListeners.length; i++) {
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if (event.isPropagationStopped()) {
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break;
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}
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// Listeners and Instances are two parallel arrays that are always in sync.
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if (dispatchListeners[i](event, dispatchInstances[i])) {
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return dispatchInstances[i];
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}
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}
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} else if (dispatchListeners) {
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if (dispatchListeners(event, dispatchInstances)) {
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return dispatchInstances;
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}
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}
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return null;
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}
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/**
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* @see executeDispatchesInOrderStopAtTrueImpl
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*/
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function executeDispatchesInOrderStopAtTrue(event) {
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var ret = executeDispatchesInOrderStopAtTrueImpl(event);
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event._dispatchInstances = null;
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event._dispatchListeners = null;
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return ret;
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}
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/**
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* Execution of a "direct" dispatch - there must be at most one dispatch
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* accumulated on the event or it is considered an error. It doesn't really make
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* sense for an event with multiple dispatches (bubbled) to keep track of the
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* return values at each dispatch execution, but it does tend to make sense when
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* dealing with "direct" dispatches.
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*
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* @return {*} The return value of executing the single dispatch.
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*/
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function executeDirectDispatch(event) {
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{
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validateEventDispatches(event);
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}
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var dispatchListener = event._dispatchListeners;
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var dispatchInstance = event._dispatchInstances;
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!!Array.isArray(dispatchListener) ? invariant(false, 'executeDirectDispatch(...): Invalid `event`.') : void 0;
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event.currentTarget = dispatchListener ? getNodeFromInstance$1(dispatchInstance) : null;
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var res = dispatchListener ? dispatchListener(event) : null;
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event.currentTarget = null;
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event._dispatchListeners = null;
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event._dispatchInstances = null;
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return res;
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}
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/**
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* @param {SyntheticEvent} event
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* @return {boolean} True iff number of dispatches accumulated is greater than 0.
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*/
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function hasDispatches(event) {
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return !!event._dispatchListeners;
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}
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// Before we know whether it is function or class
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// Root of a host tree. Could be nested inside another node.
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// A subtree. Could be an entry point to a different renderer.
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var HostComponent = 5;
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function getParent(inst) {
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do {
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inst = inst.return;
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// TODO: If this is a HostRoot we might want to bail out.
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// That is depending on if we want nested subtrees (layers) to bubble
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// events to their parent. We could also go through parentNode on the
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// host node but that wouldn't work for React Native and doesn't let us
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// do the portal feature.
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} while (inst && inst.tag !== HostComponent);
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if (inst) {
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return inst;
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}
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return null;
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}
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/**
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* Return the lowest common ancestor of A and B, or null if they are in
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* different trees.
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*/
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function getLowestCommonAncestor(instA, instB) {
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var depthA = 0;
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for (var tempA = instA; tempA; tempA = getParent(tempA)) {
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depthA++;
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}
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var depthB = 0;
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for (var tempB = instB; tempB; tempB = getParent(tempB)) {
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depthB++;
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}
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// If A is deeper, crawl up.
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while (depthA - depthB > 0) {
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instA = getParent(instA);
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depthA--;
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}
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// If B is deeper, crawl up.
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while (depthB - depthA > 0) {
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instB = getParent(instB);
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depthB--;
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}
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// Walk in lockstep until we find a match.
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var depth = depthA;
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while (depth--) {
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if (instA === instB || instA === instB.alternate) {
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return instA;
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}
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instA = getParent(instA);
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instB = getParent(instB);
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}
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return null;
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}
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/**
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* Return if A is an ancestor of B.
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*/
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function isAncestor(instA, instB) {
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while (instB) {
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if (instA === instB || instA === instB.alternate) {
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return true;
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}
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instB = getParent(instB);
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}
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return false;
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}
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/**
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* Return the parent instance of the passed-in instance.
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*/
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function getParentInstance(inst) {
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return getParent(inst);
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}
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/**
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* Simulates the traversal of a two-phase, capture/bubble event dispatch.
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*/
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function traverseTwoPhase(inst, fn, arg) {
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var path = [];
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while (inst) {
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path.push(inst);
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inst = getParent(inst);
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}
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var i = void 0;
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for (i = path.length; i-- > 0;) {
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fn(path[i], 'captured', arg);
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}
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for (i = 0; i < path.length; i++) {
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fn(path[i], 'bubbled', arg);
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}
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}
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/**
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* Traverses the ID hierarchy and invokes the supplied `cb` on any IDs that
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* should would receive a `mouseEnter` or `mouseLeave` event.
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*
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* Does not invoke the callback on the nearest common ancestor because nothing
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* "entered" or "left" that element.
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*/
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/**
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* Registers plugins so that they can extract and dispatch events.
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*
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* @see {EventPluginHub}
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*/
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/**
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* Ordered list of injected plugins.
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*/
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/**
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* Mapping from event name to dispatch config
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*/
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/**
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* Mapping from registration name to plugin module
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*/
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/**
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* Mapping from registration name to event name
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*/
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/**
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* Mapping from lowercase registration names to the properly cased version,
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* used to warn in the case of missing event handlers. Available
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* only in true.
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* @type {Object}
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*/
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// Trust the developer to only use possibleRegistrationNames in true
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/**
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* Injects an ordering of plugins (by plugin name). This allows the ordering
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* to be decoupled from injection of the actual plugins so that ordering is
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* always deterministic regardless of packaging, on-the-fly injection, etc.
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*
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* @param {array} InjectedEventPluginOrder
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* @internal
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* @see {EventPluginHub.injection.injectEventPluginOrder}
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*/
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/**
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* Injects plugins to be used by `EventPluginHub`. The plugin names must be
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* in the ordering injected by `injectEventPluginOrder`.
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*
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* Plugins can be injected as part of page initialization or on-the-fly.
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*
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* @param {object} injectedNamesToPlugins Map from names to plugin modules.
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* @internal
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* @see {EventPluginHub.injection.injectEventPluginsByName}
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*/
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/**
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* Accumulates items that must not be null or undefined into the first one. This
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* is used to conserve memory by avoiding array allocations, and thus sacrifices
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* API cleanness. Since `current` can be null before being passed in and not
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* null after this function, make sure to assign it back to `current`:
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*
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* `a = accumulateInto(a, b);`
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*
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* This API should be sparingly used. Try `accumulate` for something cleaner.
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*
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* @return {*|array<*>} An accumulation of items.
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*/
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function accumulateInto(current, next) {
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!(next != null) ? invariant(false, 'accumulateInto(...): Accumulated items must not be null or undefined.') : void 0;
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if (current == null) {
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return next;
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}
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// Both are not empty. Warning: Never call x.concat(y) when you are not
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// certain that x is an Array (x could be a string with concat method).
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if (Array.isArray(current)) {
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if (Array.isArray(next)) {
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current.push.apply(current, next);
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return current;
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}
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current.push(next);
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return current;
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}
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if (Array.isArray(next)) {
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// A bit too dangerous to mutate `next`.
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return [current].concat(next);
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}
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return [current, next];
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}
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/**
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* @param {array} arr an "accumulation" of items which is either an Array or
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* a single item. Useful when paired with the `accumulate` module. This is a
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* simple utility that allows us to reason about a collection of items, but
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* handling the case when there is exactly one item (and we do not need to
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* allocate an array).
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* @param {function} cb Callback invoked with each element or a collection.
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* @param {?} [scope] Scope used as `this` in a callback.
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*/
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function forEachAccumulated(arr, cb, scope) {
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if (Array.isArray(arr)) {
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arr.forEach(cb, scope);
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} else if (arr) {
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cb.call(scope, arr);
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}
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}
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function isInteractive(tag) {
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return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';
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}
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function shouldPreventMouseEvent(name, type, props) {
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switch (name) {
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case 'onClick':
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case 'onClickCapture':
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case 'onDoubleClick':
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case 'onDoubleClickCapture':
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case 'onMouseDown':
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case 'onMouseDownCapture':
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case 'onMouseMove':
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case 'onMouseMoveCapture':
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case 'onMouseUp':
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case 'onMouseUpCapture':
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return !!(props.disabled && isInteractive(type));
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default:
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return false;
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}
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}
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/**
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* This is a unified interface for event plugins to be installed and configured.
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*
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* Event plugins can implement the following properties:
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*
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* `extractEvents` {function(string, DOMEventTarget, string, object): *}
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* Required. When a top-level event is fired, this method is expected to
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* extract synthetic events that will in turn be queued and dispatched.
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*
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* `eventTypes` {object}
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* Optional, plugins that fire events must publish a mapping of registration
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* names that are used to register listeners. Values of this mapping must
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* be objects that contain `registrationName` or `phasedRegistrationNames`.
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*
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* `executeDispatch` {function(object, function, string)}
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* Optional, allows plugins to override how an event gets dispatched. By
|
|
* default, the listener is simply invoked.
|
|
*
|
|
* Each plugin that is injected into `EventsPluginHub` is immediately operable.
|
|
*
|
|
* @public
|
|
*/
|
|
|
|
/**
|
|
* Methods for injecting dependencies.
|
|
*/
|
|
|
|
|
|
/**
|
|
* @param {object} inst The instance, which is the source of events.
|
|
* @param {string} registrationName Name of listener (e.g. `onClick`).
|
|
* @return {?function} The stored callback.
|
|
*/
|
|
function getListener(inst, registrationName) {
|
|
var listener = void 0;
|
|
|
|
// TODO: shouldPreventMouseEvent is DOM-specific and definitely should not
|
|
// live here; needs to be moved to a better place soon
|
|
var stateNode = inst.stateNode;
|
|
if (!stateNode) {
|
|
// Work in progress (ex: onload events in incremental mode).
|
|
return null;
|
|
}
|
|
var props = getFiberCurrentPropsFromNode$1(stateNode);
|
|
if (!props) {
|
|
// Work in progress.
|
|
return null;
|
|
}
|
|
listener = props[registrationName];
|
|
if (shouldPreventMouseEvent(registrationName, inst.type, props)) {
|
|
return null;
|
|
}
|
|
!(!listener || typeof listener === 'function') ? invariant(false, 'Expected `%s` listener to be a function, instead got a value of `%s` type.', registrationName, typeof listener) : void 0;
|
|
return listener;
|
|
}
|
|
|
|
/**
|
|
* Some event types have a notion of different registration names for different
|
|
* "phases" of propagation. This finds listeners by a given phase.
|
|
*/
|
|
function listenerAtPhase(inst, event, propagationPhase) {
|
|
var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase];
|
|
return getListener(inst, registrationName);
|
|
}
|
|
|
|
/**
|
|
* A small set of propagation patterns, each of which will accept a small amount
|
|
* of information, and generate a set of "dispatch ready event objects" - which
|
|
* are sets of events that have already been annotated with a set of dispatched
|
|
* listener functions/ids. The API is designed this way to discourage these
|
|
* propagation strategies from actually executing the dispatches, since we
|
|
* always want to collect the entire set of dispatches before executing even a
|
|
* single one.
|
|
*/
|
|
|
|
/**
|
|
* Tags a `SyntheticEvent` with dispatched listeners. Creating this function
|
|
* here, allows us to not have to bind or create functions for each event.
|
|
* Mutating the event's members allows us to not have to create a wrapping
|
|
* "dispatch" object that pairs the event with the listener.
|
|
*/
|
|
function accumulateDirectionalDispatches(inst, phase, event) {
|
|
{
|
|
!inst ? warningWithoutStack$1(false, 'Dispatching inst must not be null') : void 0;
|
|
}
|
|
var listener = listenerAtPhase(inst, event, phase);
|
|
if (listener) {
|
|
event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
|
|
event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Collect dispatches (must be entirely collected before dispatching - see unit
|
|
* tests). Lazily allocate the array to conserve memory. We must loop through
|
|
* each event and perform the traversal for each one. We cannot perform a
|
|
* single traversal for the entire collection of events because each event may
|
|
* have a different target.
|
|
*/
|
|
function accumulateTwoPhaseDispatchesSingle(event) {
|
|
if (event && event.dispatchConfig.phasedRegistrationNames) {
|
|
traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Same as `accumulateTwoPhaseDispatchesSingle`, but skips over the targetID.
|
|
*/
|
|
function accumulateTwoPhaseDispatchesSingleSkipTarget(event) {
|
|
if (event && event.dispatchConfig.phasedRegistrationNames) {
|
|
var targetInst = event._targetInst;
|
|
var parentInst = targetInst ? getParentInstance(targetInst) : null;
|
|
traverseTwoPhase(parentInst, accumulateDirectionalDispatches, event);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Accumulates without regard to direction, does not look for phased
|
|
* registration names. Same as `accumulateDirectDispatchesSingle` but without
|
|
* requiring that the `dispatchMarker` be the same as the dispatched ID.
|
|
*/
|
|
function accumulateDispatches(inst, ignoredDirection, event) {
|
|
if (inst && event && event.dispatchConfig.registrationName) {
|
|
var registrationName = event.dispatchConfig.registrationName;
|
|
var listener = getListener(inst, registrationName);
|
|
if (listener) {
|
|
event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
|
|
event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Accumulates dispatches on an `SyntheticEvent`, but only for the
|
|
* `dispatchMarker`.
|
|
* @param {SyntheticEvent} event
|
|
*/
|
|
function accumulateDirectDispatchesSingle(event) {
|
|
if (event && event.dispatchConfig.registrationName) {
|
|
accumulateDispatches(event._targetInst, null, event);
|
|
}
|
|
}
|
|
|
|
function accumulateTwoPhaseDispatches(events) {
|
|
forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle);
|
|
}
|
|
|
|
function accumulateTwoPhaseDispatchesSkipTarget(events) {
|
|
forEachAccumulated(events, accumulateTwoPhaseDispatchesSingleSkipTarget);
|
|
}
|
|
|
|
|
|
|
|
function accumulateDirectDispatches(events) {
|
|
forEachAccumulated(events, accumulateDirectDispatchesSingle);
|
|
}
|
|
|
|
/* eslint valid-typeof: 0 */
|
|
|
|
var EVENT_POOL_SIZE = 10;
|
|
|
|
/**
|
|
* @interface Event
|
|
* @see http://www.w3.org/TR/DOM-Level-3-Events/
|
|
*/
|
|
var EventInterface = {
|
|
type: null,
|
|
target: null,
|
|
// currentTarget is set when dispatching; no use in copying it here
|
|
currentTarget: function () {
|
|
return null;
|
|
},
|
|
eventPhase: null,
|
|
bubbles: null,
|
|
cancelable: null,
|
|
timeStamp: function (event) {
|
|
return event.timeStamp || Date.now();
|
|
},
|
|
defaultPrevented: null,
|
|
isTrusted: null
|
|
};
|
|
|
|
function functionThatReturnsTrue() {
|
|
return true;
|
|
}
|
|
|
|
function functionThatReturnsFalse() {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Synthetic events are dispatched by event plugins, typically in response to a
|
|
* top-level event delegation handler.
|
|
*
|
|
* These systems should generally use pooling to reduce the frequency of garbage
|
|
* collection. The system should check `isPersistent` to determine whether the
|
|
* event should be released into the pool after being dispatched. Users that
|
|
* need a persisted event should invoke `persist`.
|
|
*
|
|
* Synthetic events (and subclasses) implement the DOM Level 3 Events API by
|
|
* normalizing browser quirks. Subclasses do not necessarily have to implement a
|
|
* DOM interface; custom application-specific events can also subclass this.
|
|
*
|
|
* @param {object} dispatchConfig Configuration used to dispatch this event.
|
|
* @param {*} targetInst Marker identifying the event target.
|
|
* @param {object} nativeEvent Native browser event.
|
|
* @param {DOMEventTarget} nativeEventTarget Target node.
|
|
*/
|
|
function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) {
|
|
{
|
|
// these have a getter/setter for warnings
|
|
delete this.nativeEvent;
|
|
delete this.preventDefault;
|
|
delete this.stopPropagation;
|
|
delete this.isDefaultPrevented;
|
|
delete this.isPropagationStopped;
|
|
}
|
|
|
|
this.dispatchConfig = dispatchConfig;
|
|
this._targetInst = targetInst;
|
|
this.nativeEvent = nativeEvent;
|
|
|
|
var Interface = this.constructor.Interface;
|
|
for (var propName in Interface) {
|
|
if (!Interface.hasOwnProperty(propName)) {
|
|
continue;
|
|
}
|
|
{
|
|
delete this[propName]; // this has a getter/setter for warnings
|
|
}
|
|
var normalize = Interface[propName];
|
|
if (normalize) {
|
|
this[propName] = normalize(nativeEvent);
|
|
} else {
|
|
if (propName === 'target') {
|
|
this.target = nativeEventTarget;
|
|
} else {
|
|
this[propName] = nativeEvent[propName];
|
|
}
|
|
}
|
|
}
|
|
|
|
var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;
|
|
if (defaultPrevented) {
|
|
this.isDefaultPrevented = functionThatReturnsTrue;
|
|
} else {
|
|
this.isDefaultPrevented = functionThatReturnsFalse;
|
|
}
|
|
this.isPropagationStopped = functionThatReturnsFalse;
|
|
return this;
|
|
}
|
|
|
|
_assign(SyntheticEvent.prototype, {
|
|
preventDefault: function () {
|
|
this.defaultPrevented = true;
|
|
var event = this.nativeEvent;
|
|
if (!event) {
|
|
return;
|
|
}
|
|
|
|
if (event.preventDefault) {
|
|
event.preventDefault();
|
|
} else if (typeof event.returnValue !== 'unknown') {
|
|
event.returnValue = false;
|
|
}
|
|
this.isDefaultPrevented = functionThatReturnsTrue;
|
|
},
|
|
|
|
stopPropagation: function () {
|
|
var event = this.nativeEvent;
|
|
if (!event) {
|
|
return;
|
|
}
|
|
|
|
if (event.stopPropagation) {
|
|
event.stopPropagation();
|
|
} else if (typeof event.cancelBubble !== 'unknown') {
|
|
// The ChangeEventPlugin registers a "propertychange" event for
|
|
// IE. This event does not support bubbling or cancelling, and
|
|
// any references to cancelBubble throw "Member not found". A
|
|
// typeof check of "unknown" circumvents this issue (and is also
|
|
// IE specific).
|
|
event.cancelBubble = true;
|
|
}
|
|
|
|
this.isPropagationStopped = functionThatReturnsTrue;
|
|
},
|
|
|
|
/**
|
|
* We release all dispatched `SyntheticEvent`s after each event loop, adding
|
|
* them back into the pool. This allows a way to hold onto a reference that
|
|
* won't be added back into the pool.
|
|
*/
|
|
persist: function () {
|
|
this.isPersistent = functionThatReturnsTrue;
|
|
},
|
|
|
|
/**
|
|
* Checks if this event should be released back into the pool.
|
|
*
|
|
* @return {boolean} True if this should not be released, false otherwise.
|
|
*/
|
|
isPersistent: functionThatReturnsFalse,
|
|
|
|
/**
|
|
* `PooledClass` looks for `destructor` on each instance it releases.
|
|
*/
|
|
destructor: function () {
|
|
var Interface = this.constructor.Interface;
|
|
for (var propName in Interface) {
|
|
{
|
|
Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName]));
|
|
}
|
|
}
|
|
this.dispatchConfig = null;
|
|
this._targetInst = null;
|
|
this.nativeEvent = null;
|
|
this.isDefaultPrevented = functionThatReturnsFalse;
|
|
this.isPropagationStopped = functionThatReturnsFalse;
|
|
this._dispatchListeners = null;
|
|
this._dispatchInstances = null;
|
|
{
|
|
Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null));
|
|
Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse));
|
|
Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse));
|
|
Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {}));
|
|
Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {}));
|
|
}
|
|
}
|
|
});
|
|
|
|
SyntheticEvent.Interface = EventInterface;
|
|
|
|
/**
|
|
* Helper to reduce boilerplate when creating subclasses.
|
|
*/
|
|
SyntheticEvent.extend = function (Interface) {
|
|
var Super = this;
|
|
|
|
var E = function () {};
|
|
E.prototype = Super.prototype;
|
|
var prototype = new E();
|
|
|
|
function Class() {
|
|
return Super.apply(this, arguments);
|
|
}
|
|
_assign(prototype, Class.prototype);
|
|
Class.prototype = prototype;
|
|
Class.prototype.constructor = Class;
|
|
|
|
Class.Interface = _assign({}, Super.Interface, Interface);
|
|
Class.extend = Super.extend;
|
|
addEventPoolingTo(Class);
|
|
|
|
return Class;
|
|
};
|
|
|
|
addEventPoolingTo(SyntheticEvent);
|
|
|
|
/**
|
|
* Helper to nullify syntheticEvent instance properties when destructing
|
|
*
|
|
* @param {String} propName
|
|
* @param {?object} getVal
|
|
* @return {object} defineProperty object
|
|
*/
|
|
function getPooledWarningPropertyDefinition(propName, getVal) {
|
|
var isFunction = typeof getVal === 'function';
|
|
return {
|
|
configurable: true,
|
|
set: set,
|
|
get: get
|
|
};
|
|
|
|
function set(val) {
|
|
var action = isFunction ? 'setting the method' : 'setting the property';
|
|
warn(action, 'This is effectively a no-op');
|
|
return val;
|
|
}
|
|
|
|
function get() {
|
|
var action = isFunction ? 'accessing the method' : 'accessing the property';
|
|
var result = isFunction ? 'This is a no-op function' : 'This is set to null';
|
|
warn(action, result);
|
|
return getVal;
|
|
}
|
|
|
|
function warn(action, result) {
|
|
var warningCondition = false;
|
|
!warningCondition ? warningWithoutStack$1(false, "This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://fb.me/react-event-pooling for more information.', action, propName, result) : void 0;
|
|
}
|
|
}
|
|
|
|
function getPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) {
|
|
var EventConstructor = this;
|
|
if (EventConstructor.eventPool.length) {
|
|
var instance = EventConstructor.eventPool.pop();
|
|
EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst);
|
|
return instance;
|
|
}
|
|
return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst);
|
|
}
|
|
|
|
function releasePooledEvent(event) {
|
|
var EventConstructor = this;
|
|
!(event instanceof EventConstructor) ? invariant(false, 'Trying to release an event instance into a pool of a different type.') : void 0;
|
|
event.destructor();
|
|
if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) {
|
|
EventConstructor.eventPool.push(event);
|
|
}
|
|
}
|
|
|
|
function addEventPoolingTo(EventConstructor) {
|
|
EventConstructor.eventPool = [];
|
|
EventConstructor.getPooled = getPooledEvent;
|
|
EventConstructor.release = releasePooledEvent;
|
|
}
|
|
|
|
/**
|
|
* `touchHistory` isn't actually on the native event, but putting it in the
|
|
* interface will ensure that it is cleaned up when pooled/destroyed. The
|
|
* `ResponderEventPlugin` will populate it appropriately.
|
|
*/
|
|
var ResponderSyntheticEvent = SyntheticEvent.extend({
|
|
touchHistory: function (nativeEvent) {
|
|
return null; // Actually doesn't even look at the native event.
|
|
}
|
|
});
|
|
|
|
// Note: ideally these would be imported from DOMTopLevelEventTypes,
|
|
// but our build system currently doesn't let us do that from a fork.
|
|
|
|
var TOP_TOUCH_START = 'touchstart';
|
|
var TOP_TOUCH_MOVE = 'touchmove';
|
|
var TOP_TOUCH_END = 'touchend';
|
|
var TOP_TOUCH_CANCEL = 'touchcancel';
|
|
var TOP_SCROLL = 'scroll';
|
|
var TOP_SELECTION_CHANGE = 'selectionchange';
|
|
var TOP_MOUSE_DOWN = 'mousedown';
|
|
var TOP_MOUSE_MOVE = 'mousemove';
|
|
var TOP_MOUSE_UP = 'mouseup';
|
|
|
|
function isStartish(topLevelType) {
|
|
return topLevelType === TOP_TOUCH_START || topLevelType === TOP_MOUSE_DOWN;
|
|
}
|
|
|
|
function isMoveish(topLevelType) {
|
|
return topLevelType === TOP_TOUCH_MOVE || topLevelType === TOP_MOUSE_MOVE;
|
|
}
|
|
|
|
function isEndish(topLevelType) {
|
|
return topLevelType === TOP_TOUCH_END || topLevelType === TOP_TOUCH_CANCEL || topLevelType === TOP_MOUSE_UP;
|
|
}
|
|
|
|
var startDependencies = [TOP_TOUCH_START, TOP_MOUSE_DOWN];
|
|
var moveDependencies = [TOP_TOUCH_MOVE, TOP_MOUSE_MOVE];
|
|
var endDependencies = [TOP_TOUCH_CANCEL, TOP_TOUCH_END, TOP_MOUSE_UP];
|
|
|
|
/**
|
|
* Tracks the position and time of each active touch by `touch.identifier`. We
|
|
* should typically only see IDs in the range of 1-20 because IDs get recycled
|
|
* when touches end and start again.
|
|
*/
|
|
|
|
|
|
var MAX_TOUCH_BANK = 20;
|
|
var touchBank = [];
|
|
var touchHistory = {
|
|
touchBank: touchBank,
|
|
numberActiveTouches: 0,
|
|
// If there is only one active touch, we remember its location. This prevents
|
|
// us having to loop through all of the touches all the time in the most
|
|
// common case.
|
|
indexOfSingleActiveTouch: -1,
|
|
mostRecentTimeStamp: 0
|
|
};
|
|
|
|
function timestampForTouch(touch) {
|
|
// The legacy internal implementation provides "timeStamp", which has been
|
|
// renamed to "timestamp". Let both work for now while we iron it out
|
|
// TODO (evv): rename timeStamp to timestamp in internal code
|
|
return touch.timeStamp || touch.timestamp;
|
|
}
|
|
|
|
/**
|
|
* TODO: Instead of making gestures recompute filtered velocity, we could
|
|
* include a built in velocity computation that can be reused globally.
|
|
*/
|
|
function createTouchRecord(touch) {
|
|
return {
|
|
touchActive: true,
|
|
startPageX: touch.pageX,
|
|
startPageY: touch.pageY,
|
|
startTimeStamp: timestampForTouch(touch),
|
|
currentPageX: touch.pageX,
|
|
currentPageY: touch.pageY,
|
|
currentTimeStamp: timestampForTouch(touch),
|
|
previousPageX: touch.pageX,
|
|
previousPageY: touch.pageY,
|
|
previousTimeStamp: timestampForTouch(touch)
|
|
};
|
|
}
|
|
|
|
function resetTouchRecord(touchRecord, touch) {
|
|
touchRecord.touchActive = true;
|
|
touchRecord.startPageX = touch.pageX;
|
|
touchRecord.startPageY = touch.pageY;
|
|
touchRecord.startTimeStamp = timestampForTouch(touch);
|
|
touchRecord.currentPageX = touch.pageX;
|
|
touchRecord.currentPageY = touch.pageY;
|
|
touchRecord.currentTimeStamp = timestampForTouch(touch);
|
|
touchRecord.previousPageX = touch.pageX;
|
|
touchRecord.previousPageY = touch.pageY;
|
|
touchRecord.previousTimeStamp = timestampForTouch(touch);
|
|
}
|
|
|
|
function getTouchIdentifier(_ref) {
|
|
var identifier = _ref.identifier;
|
|
|
|
!(identifier != null) ? invariant(false, 'Touch object is missing identifier.') : void 0;
|
|
{
|
|
!(identifier <= MAX_TOUCH_BANK) ? warningWithoutStack$1(false, 'Touch identifier %s is greater than maximum supported %s which causes ' + 'performance issues backfilling array locations for all of the indices.', identifier, MAX_TOUCH_BANK) : void 0;
|
|
}
|
|
return identifier;
|
|
}
|
|
|
|
function recordTouchStart(touch) {
|
|
var identifier = getTouchIdentifier(touch);
|
|
var touchRecord = touchBank[identifier];
|
|
if (touchRecord) {
|
|
resetTouchRecord(touchRecord, touch);
|
|
} else {
|
|
touchBank[identifier] = createTouchRecord(touch);
|
|
}
|
|
touchHistory.mostRecentTimeStamp = timestampForTouch(touch);
|
|
}
|
|
|
|
function recordTouchMove(touch) {
|
|
var touchRecord = touchBank[getTouchIdentifier(touch)];
|
|
if (touchRecord) {
|
|
touchRecord.touchActive = true;
|
|
touchRecord.previousPageX = touchRecord.currentPageX;
|
|
touchRecord.previousPageY = touchRecord.currentPageY;
|
|
touchRecord.previousTimeStamp = touchRecord.currentTimeStamp;
|
|
touchRecord.currentPageX = touch.pageX;
|
|
touchRecord.currentPageY = touch.pageY;
|
|
touchRecord.currentTimeStamp = timestampForTouch(touch);
|
|
touchHistory.mostRecentTimeStamp = timestampForTouch(touch);
|
|
} else {
|
|
console.error('Cannot record touch move without a touch start.\n' + 'Touch Move: %s\n', 'Touch Bank: %s', printTouch(touch), printTouchBank());
|
|
}
|
|
}
|
|
|
|
function recordTouchEnd(touch) {
|
|
var touchRecord = touchBank[getTouchIdentifier(touch)];
|
|
if (touchRecord) {
|
|
touchRecord.touchActive = false;
|
|
touchRecord.previousPageX = touchRecord.currentPageX;
|
|
touchRecord.previousPageY = touchRecord.currentPageY;
|
|
touchRecord.previousTimeStamp = touchRecord.currentTimeStamp;
|
|
touchRecord.currentPageX = touch.pageX;
|
|
touchRecord.currentPageY = touch.pageY;
|
|
touchRecord.currentTimeStamp = timestampForTouch(touch);
|
|
touchHistory.mostRecentTimeStamp = timestampForTouch(touch);
|
|
} else {
|
|
console.error('Cannot record touch end without a touch start.\n' + 'Touch End: %s\n', 'Touch Bank: %s', printTouch(touch), printTouchBank());
|
|
}
|
|
}
|
|
|
|
function printTouch(touch) {
|
|
return JSON.stringify({
|
|
identifier: touch.identifier,
|
|
pageX: touch.pageX,
|
|
pageY: touch.pageY,
|
|
timestamp: timestampForTouch(touch)
|
|
});
|
|
}
|
|
|
|
function printTouchBank() {
|
|
var printed = JSON.stringify(touchBank.slice(0, MAX_TOUCH_BANK));
|
|
if (touchBank.length > MAX_TOUCH_BANK) {
|
|
printed += ' (original size: ' + touchBank.length + ')';
|
|
}
|
|
return printed;
|
|
}
|
|
|
|
var ResponderTouchHistoryStore = {
|
|
recordTouchTrack: function (topLevelType, nativeEvent) {
|
|
if (isMoveish(topLevelType)) {
|
|
nativeEvent.changedTouches.forEach(recordTouchMove);
|
|
} else if (isStartish(topLevelType)) {
|
|
nativeEvent.changedTouches.forEach(recordTouchStart);
|
|
touchHistory.numberActiveTouches = nativeEvent.touches.length;
|
|
if (touchHistory.numberActiveTouches === 1) {
|
|
touchHistory.indexOfSingleActiveTouch = nativeEvent.touches[0].identifier;
|
|
}
|
|
} else if (isEndish(topLevelType)) {
|
|
nativeEvent.changedTouches.forEach(recordTouchEnd);
|
|
touchHistory.numberActiveTouches = nativeEvent.touches.length;
|
|
if (touchHistory.numberActiveTouches === 1) {
|
|
for (var i = 0; i < touchBank.length; i++) {
|
|
var touchTrackToCheck = touchBank[i];
|
|
if (touchTrackToCheck != null && touchTrackToCheck.touchActive) {
|
|
touchHistory.indexOfSingleActiveTouch = i;
|
|
break;
|
|
}
|
|
}
|
|
{
|
|
var activeRecord = touchBank[touchHistory.indexOfSingleActiveTouch];
|
|
!(activeRecord != null && activeRecord.touchActive) ? warningWithoutStack$1(false, 'Cannot find single active touch.') : void 0;
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
|
|
touchHistory: touchHistory
|
|
};
|
|
|
|
/**
|
|
* Accumulates items that must not be null or undefined.
|
|
*
|
|
* This is used to conserve memory by avoiding array allocations.
|
|
*
|
|
* @return {*|array<*>} An accumulation of items.
|
|
*/
|
|
function accumulate(current, next) {
|
|
!(next != null) ? invariant(false, 'accumulate(...): Accumulated items must be not be null or undefined.') : void 0;
|
|
|
|
if (current == null) {
|
|
return next;
|
|
}
|
|
|
|
// Both are not empty. Warning: Never call x.concat(y) when you are not
|
|
// certain that x is an Array (x could be a string with concat method).
|
|
if (Array.isArray(current)) {
|
|
return current.concat(next);
|
|
}
|
|
|
|
if (Array.isArray(next)) {
|
|
return [current].concat(next);
|
|
}
|
|
|
|
return [current, next];
|
|
}
|
|
|
|
/**
|
|
* Instance of element that should respond to touch/move types of interactions,
|
|
* as indicated explicitly by relevant callbacks.
|
|
*/
|
|
var responderInst = null;
|
|
|
|
/**
|
|
* Count of current touches. A textInput should become responder iff the
|
|
* selection changes while there is a touch on the screen.
|
|
*/
|
|
var trackedTouchCount = 0;
|
|
|
|
var changeResponder = function (nextResponderInst, blockHostResponder) {
|
|
var oldResponderInst = responderInst;
|
|
responderInst = nextResponderInst;
|
|
if (ResponderEventPlugin.GlobalResponderHandler !== null) {
|
|
ResponderEventPlugin.GlobalResponderHandler.onChange(oldResponderInst, nextResponderInst, blockHostResponder);
|
|
}
|
|
};
|
|
|
|
var eventTypes = {
|
|
/**
|
|
* On a `touchStart`/`mouseDown`, is it desired that this element become the
|
|
* responder?
|
|
*/
|
|
startShouldSetResponder: {
|
|
phasedRegistrationNames: {
|
|
bubbled: 'onStartShouldSetResponder',
|
|
captured: 'onStartShouldSetResponderCapture'
|
|
},
|
|
dependencies: startDependencies
|
|
},
|
|
|
|
/**
|
|
* On a `scroll`, is it desired that this element become the responder? This
|
|
* is usually not needed, but should be used to retroactively infer that a
|
|
* `touchStart` had occurred during momentum scroll. During a momentum scroll,
|
|
* a touch start will be immediately followed by a scroll event if the view is
|
|
* currently scrolling.
|
|
*
|
|
* TODO: This shouldn't bubble.
|
|
*/
|
|
scrollShouldSetResponder: {
|
|
phasedRegistrationNames: {
|
|
bubbled: 'onScrollShouldSetResponder',
|
|
captured: 'onScrollShouldSetResponderCapture'
|
|
},
|
|
dependencies: [TOP_SCROLL]
|
|
},
|
|
|
|
/**
|
|
* On text selection change, should this element become the responder? This
|
|
* is needed for text inputs or other views with native selection, so the
|
|
* JS view can claim the responder.
|
|
*
|
|
* TODO: This shouldn't bubble.
|
|
*/
|
|
selectionChangeShouldSetResponder: {
|
|
phasedRegistrationNames: {
|
|
bubbled: 'onSelectionChangeShouldSetResponder',
|
|
captured: 'onSelectionChangeShouldSetResponderCapture'
|
|
},
|
|
dependencies: [TOP_SELECTION_CHANGE]
|
|
},
|
|
|
|
/**
|
|
* On a `touchMove`/`mouseMove`, is it desired that this element become the
|
|
* responder?
|
|
*/
|
|
moveShouldSetResponder: {
|
|
phasedRegistrationNames: {
|
|
bubbled: 'onMoveShouldSetResponder',
|
|
captured: 'onMoveShouldSetResponderCapture'
|
|
},
|
|
dependencies: moveDependencies
|
|
},
|
|
|
|
/**
|
|
* Direct responder events dispatched directly to responder. Do not bubble.
|
|
*/
|
|
responderStart: {
|
|
registrationName: 'onResponderStart',
|
|
dependencies: startDependencies
|
|
},
|
|
responderMove: {
|
|
registrationName: 'onResponderMove',
|
|
dependencies: moveDependencies
|
|
},
|
|
responderEnd: {
|
|
registrationName: 'onResponderEnd',
|
|
dependencies: endDependencies
|
|
},
|
|
responderRelease: {
|
|
registrationName: 'onResponderRelease',
|
|
dependencies: endDependencies
|
|
},
|
|
responderTerminationRequest: {
|
|
registrationName: 'onResponderTerminationRequest',
|
|
dependencies: []
|
|
},
|
|
responderGrant: {
|
|
registrationName: 'onResponderGrant',
|
|
dependencies: []
|
|
},
|
|
responderReject: {
|
|
registrationName: 'onResponderReject',
|
|
dependencies: []
|
|
},
|
|
responderTerminate: {
|
|
registrationName: 'onResponderTerminate',
|
|
dependencies: []
|
|
}
|
|
};
|
|
|
|
/**
|
|
*
|
|
* Responder System:
|
|
* ----------------
|
|
*
|
|
* - A global, solitary "interaction lock" on a view.
|
|
* - If a node becomes the responder, it should convey visual feedback
|
|
* immediately to indicate so, either by highlighting or moving accordingly.
|
|
* - To be the responder means, that touches are exclusively important to that
|
|
* responder view, and no other view.
|
|
* - While touches are still occurring, the responder lock can be transferred to
|
|
* a new view, but only to increasingly "higher" views (meaning ancestors of
|
|
* the current responder).
|
|
*
|
|
* Responder being granted:
|
|
* ------------------------
|
|
*
|
|
* - Touch starts, moves, and scrolls can cause an ID to become the responder.
|
|
* - We capture/bubble `startShouldSetResponder`/`moveShouldSetResponder` to
|
|
* the "appropriate place".
|
|
* - If nothing is currently the responder, the "appropriate place" is the
|
|
* initiating event's `targetID`.
|
|
* - If something *is* already the responder, the "appropriate place" is the
|
|
* first common ancestor of the event target and the current `responderInst`.
|
|
* - Some negotiation happens: See the timing diagram below.
|
|
* - Scrolled views automatically become responder. The reasoning is that a
|
|
* platform scroll view that isn't built on top of the responder system has
|
|
* began scrolling, and the active responder must now be notified that the
|
|
* interaction is no longer locked to it - the system has taken over.
|
|
*
|
|
* - Responder being released:
|
|
* As soon as no more touches that *started* inside of descendants of the
|
|
* *current* responderInst, an `onResponderRelease` event is dispatched to the
|
|
* current responder, and the responder lock is released.
|
|
*
|
|
* TODO:
|
|
* - on "end", a callback hook for `onResponderEndShouldRemainResponder` that
|
|
* determines if the responder lock should remain.
|
|
* - If a view shouldn't "remain" the responder, any active touches should by
|
|
* default be considered "dead" and do not influence future negotiations or
|
|
* bubble paths. It should be as if those touches do not exist.
|
|
* -- For multitouch: Usually a translate-z will choose to "remain" responder
|
|
* after one out of many touches ended. For translate-y, usually the view
|
|
* doesn't wish to "remain" responder after one of many touches end.
|
|
* - Consider building this on top of a `stopPropagation` model similar to
|
|
* `W3C` events.
|
|
* - Ensure that `onResponderTerminate` is called on touch cancels, whether or
|
|
* not `onResponderTerminationRequest` returns `true` or `false`.
|
|
*
|
|
*/
|
|
|
|
/* Negotiation Performed
|
|
+-----------------------+
|
|
/ \
|
|
Process low level events to + Current Responder + wantsResponderID
|
|
determine who to perform negot-| (if any exists at all) |
|
|
iation/transition | Otherwise just pass through|
|
|
-------------------------------+----------------------------+------------------+
|
|
Bubble to find first ID | |
|
|
to return true:wantsResponderID| |
|
|
| |
|
|
+-------------+ | |
|
|
| onTouchStart| | |
|
|
+------+------+ none | |
|
|
| return| |
|
|
+-----------v-------------+true| +------------------------+ |
|
|
|onStartShouldSetResponder|----->|onResponderStart (cur) |<-----------+
|
|
+-----------+-------------+ | +------------------------+ | |
|
|
| | | +--------+-------+
|
|
| returned true for| false:REJECT +-------->|onResponderReject
|
|
| wantsResponderID | | | +----------------+
|
|
| (now attempt | +------------------+-----+ |
|
|
| handoff) | | onResponder | |
|
|
+------------------->| TerminationRequest| |
|
|
| +------------------+-----+ |
|
|
| | | +----------------+
|
|
| true:GRANT +-------->|onResponderGrant|
|
|
| | +--------+-------+
|
|
| +------------------------+ | |
|
|
| | onResponderTerminate |<-----------+
|
|
| +------------------+-----+ |
|
|
| | | +----------------+
|
|
| +-------->|onResponderStart|
|
|
| | +----------------+
|
|
Bubble to find first ID | |
|
|
to return true:wantsResponderID| |
|
|
| |
|
|
+-------------+ | |
|
|
| onTouchMove | | |
|
|
+------+------+ none | |
|
|
| return| |
|
|
+-----------v-------------+true| +------------------------+ |
|
|
|onMoveShouldSetResponder |----->|onResponderMove (cur) |<-----------+
|
|
+-----------+-------------+ | +------------------------+ | |
|
|
| | | +--------+-------+
|
|
| returned true for| false:REJECT +-------->|onResponderRejec|
|
|
| wantsResponderID | | | +----------------+
|
|
| (now attempt | +------------------+-----+ |
|
|
| handoff) | | onResponder | |
|
|
+------------------->| TerminationRequest| |
|
|
| +------------------+-----+ |
|
|
| | | +----------------+
|
|
| true:GRANT +-------->|onResponderGrant|
|
|
| | +--------+-------+
|
|
| +------------------------+ | |
|
|
| | onResponderTerminate |<-----------+
|
|
| +------------------+-----+ |
|
|
| | | +----------------+
|
|
| +-------->|onResponderMove |
|
|
| | +----------------+
|
|
| |
|
|
| |
|
|
Some active touch started| |
|
|
inside current responder | +------------------------+ |
|
|
+------------------------->| onResponderEnd | |
|
|
| | +------------------------+ |
|
|
+---+---------+ | |
|
|
| onTouchEnd | | |
|
|
+---+---------+ | |
|
|
| | +------------------------+ |
|
|
+------------------------->| onResponderEnd | |
|
|
No active touches started| +-----------+------------+ |
|
|
inside current responder | | |
|
|
| v |
|
|
| +------------------------+ |
|
|
| | onResponderRelease | |
|
|
| +------------------------+ |
|
|
| |
|
|
+ + */
|
|
|
|
/**
|
|
* A note about event ordering in the `EventPluginHub`.
|
|
*
|
|
* Suppose plugins are injected in the following order:
|
|
*
|
|
* `[R, S, C]`
|
|
*
|
|
* To help illustrate the example, assume `S` is `SimpleEventPlugin` (for
|
|
* `onClick` etc) and `R` is `ResponderEventPlugin`.
|
|
*
|
|
* "Deferred-Dispatched Events":
|
|
*
|
|
* - The current event plugin system will traverse the list of injected plugins,
|
|
* in order, and extract events by collecting the plugin's return value of
|
|
* `extractEvents()`.
|
|
* - These events that are returned from `extractEvents` are "deferred
|
|
* dispatched events".
|
|
* - When returned from `extractEvents`, deferred-dispatched events contain an
|
|
* "accumulation" of deferred dispatches.
|
|
* - These deferred dispatches are accumulated/collected before they are
|
|
* returned, but processed at a later time by the `EventPluginHub` (hence the
|
|
* name deferred).
|
|
*
|
|
* In the process of returning their deferred-dispatched events, event plugins
|
|
* themselves can dispatch events on-demand without returning them from
|
|
* `extractEvents`. Plugins might want to do this, so that they can use event
|
|
* dispatching as a tool that helps them decide which events should be extracted
|
|
* in the first place.
|
|
*
|
|
* "On-Demand-Dispatched Events":
|
|
*
|
|
* - On-demand-dispatched events are not returned from `extractEvents`.
|
|
* - On-demand-dispatched events are dispatched during the process of returning
|
|
* the deferred-dispatched events.
|
|
* - They should not have side effects.
|
|
* - They should be avoided, and/or eventually be replaced with another
|
|
* abstraction that allows event plugins to perform multiple "rounds" of event
|
|
* extraction.
|
|
*
|
|
* Therefore, the sequence of event dispatches becomes:
|
|
*
|
|
* - `R`s on-demand events (if any) (dispatched by `R` on-demand)
|
|
* - `S`s on-demand events (if any) (dispatched by `S` on-demand)
|
|
* - `C`s on-demand events (if any) (dispatched by `C` on-demand)
|
|
* - `R`s extracted events (if any) (dispatched by `EventPluginHub`)
|
|
* - `S`s extracted events (if any) (dispatched by `EventPluginHub`)
|
|
* - `C`s extracted events (if any) (dispatched by `EventPluginHub`)
|
|
*
|
|
* In the case of `ResponderEventPlugin`: If the `startShouldSetResponder`
|
|
* on-demand dispatch returns `true` (and some other details are satisfied) the
|
|
* `onResponderGrant` deferred dispatched event is returned from
|
|
* `extractEvents`. The sequence of dispatch executions in this case
|
|
* will appear as follows:
|
|
*
|
|
* - `startShouldSetResponder` (`ResponderEventPlugin` dispatches on-demand)
|
|
* - `touchStartCapture` (`EventPluginHub` dispatches as usual)
|
|
* - `touchStart` (`EventPluginHub` dispatches as usual)
|
|
* - `responderGrant/Reject` (`EventPluginHub` dispatches as usual)
|
|
*/
|
|
|
|
function setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
|
|
var shouldSetEventType = isStartish(topLevelType) ? eventTypes.startShouldSetResponder : isMoveish(topLevelType) ? eventTypes.moveShouldSetResponder : topLevelType === TOP_SELECTION_CHANGE ? eventTypes.selectionChangeShouldSetResponder : eventTypes.scrollShouldSetResponder;
|
|
|
|
// TODO: stop one short of the current responder.
|
|
var bubbleShouldSetFrom = !responderInst ? targetInst : getLowestCommonAncestor(responderInst, targetInst);
|
|
|
|
// When capturing/bubbling the "shouldSet" event, we want to skip the target
|
|
// (deepest ID) if it happens to be the current responder. The reasoning:
|
|
// It's strange to get an `onMoveShouldSetResponder` when you're *already*
|
|
// the responder.
|
|
var skipOverBubbleShouldSetFrom = bubbleShouldSetFrom === responderInst;
|
|
var shouldSetEvent = ResponderSyntheticEvent.getPooled(shouldSetEventType, bubbleShouldSetFrom, nativeEvent, nativeEventTarget);
|
|
shouldSetEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
|
|
if (skipOverBubbleShouldSetFrom) {
|
|
accumulateTwoPhaseDispatchesSkipTarget(shouldSetEvent);
|
|
} else {
|
|
accumulateTwoPhaseDispatches(shouldSetEvent);
|
|
}
|
|
var wantsResponderInst = executeDispatchesInOrderStopAtTrue(shouldSetEvent);
|
|
if (!shouldSetEvent.isPersistent()) {
|
|
shouldSetEvent.constructor.release(shouldSetEvent);
|
|
}
|
|
|
|
if (!wantsResponderInst || wantsResponderInst === responderInst) {
|
|
return null;
|
|
}
|
|
var extracted = void 0;
|
|
var grantEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderGrant, wantsResponderInst, nativeEvent, nativeEventTarget);
|
|
grantEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
|
|
|
|
accumulateDirectDispatches(grantEvent);
|
|
var blockHostResponder = executeDirectDispatch(grantEvent) === true;
|
|
if (responderInst) {
|
|
var terminationRequestEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminationRequest, responderInst, nativeEvent, nativeEventTarget);
|
|
terminationRequestEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
|
|
accumulateDirectDispatches(terminationRequestEvent);
|
|
var shouldSwitch = !hasDispatches(terminationRequestEvent) || executeDirectDispatch(terminationRequestEvent);
|
|
if (!terminationRequestEvent.isPersistent()) {
|
|
terminationRequestEvent.constructor.release(terminationRequestEvent);
|
|
}
|
|
|
|
if (shouldSwitch) {
|
|
var terminateEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminate, responderInst, nativeEvent, nativeEventTarget);
|
|
terminateEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
|
|
accumulateDirectDispatches(terminateEvent);
|
|
extracted = accumulate(extracted, [grantEvent, terminateEvent]);
|
|
changeResponder(wantsResponderInst, blockHostResponder);
|
|
} else {
|
|
var rejectEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderReject, wantsResponderInst, nativeEvent, nativeEventTarget);
|
|
rejectEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
|
|
accumulateDirectDispatches(rejectEvent);
|
|
extracted = accumulate(extracted, rejectEvent);
|
|
}
|
|
} else {
|
|
extracted = accumulate(extracted, grantEvent);
|
|
changeResponder(wantsResponderInst, blockHostResponder);
|
|
}
|
|
return extracted;
|
|
}
|
|
|
|
/**
|
|
* A transfer is a negotiation between a currently set responder and the next
|
|
* element to claim responder status. Any start event could trigger a transfer
|
|
* of responderInst. Any move event could trigger a transfer.
|
|
*
|
|
* @param {string} topLevelType Record from `BrowserEventConstants`.
|
|
* @return {boolean} True if a transfer of responder could possibly occur.
|
|
*/
|
|
function canTriggerTransfer(topLevelType, topLevelInst, nativeEvent) {
|
|
return topLevelInst && (
|
|
// responderIgnoreScroll: We are trying to migrate away from specifically
|
|
// tracking native scroll events here and responderIgnoreScroll indicates we
|
|
// will send topTouchCancel to handle canceling touch events instead
|
|
topLevelType === TOP_SCROLL && !nativeEvent.responderIgnoreScroll || trackedTouchCount > 0 && topLevelType === TOP_SELECTION_CHANGE || isStartish(topLevelType) || isMoveish(topLevelType));
|
|
}
|
|
|
|
/**
|
|
* Returns whether or not this touch end event makes it such that there are no
|
|
* longer any touches that started inside of the current `responderInst`.
|
|
*
|
|
* @param {NativeEvent} nativeEvent Native touch end event.
|
|
* @return {boolean} Whether or not this touch end event ends the responder.
|
|
*/
|
|
function noResponderTouches(nativeEvent) {
|
|
var touches = nativeEvent.touches;
|
|
if (!touches || touches.length === 0) {
|
|
return true;
|
|
}
|
|
for (var i = 0; i < touches.length; i++) {
|
|
var activeTouch = touches[i];
|
|
var target = activeTouch.target;
|
|
if (target !== null && target !== undefined && target !== 0) {
|
|
// Is the original touch location inside of the current responder?
|
|
var targetInst = getInstanceFromNode$1(target);
|
|
if (isAncestor(responderInst, targetInst)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
var ResponderEventPlugin = {
|
|
/* For unit testing only */
|
|
_getResponder: function () {
|
|
return responderInst;
|
|
},
|
|
|
|
eventTypes: eventTypes,
|
|
|
|
/**
|
|
* We must be resilient to `targetInst` being `null` on `touchMove` or
|
|
* `touchEnd`. On certain platforms, this means that a native scroll has
|
|
* assumed control and the original touch targets are destroyed.
|
|
*/
|
|
extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {
|
|
if (isStartish(topLevelType)) {
|
|
trackedTouchCount += 1;
|
|
} else if (isEndish(topLevelType)) {
|
|
if (trackedTouchCount >= 0) {
|
|
trackedTouchCount -= 1;
|
|
} else {
|
|
console.error('Ended a touch event which was not counted in `trackedTouchCount`.');
|
|
return null;
|
|
}
|
|
}
|
|
|
|
ResponderTouchHistoryStore.recordTouchTrack(topLevelType, nativeEvent);
|
|
|
|
var extracted = canTriggerTransfer(topLevelType, targetInst, nativeEvent) ? setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) : null;
|
|
// Responder may or may not have transferred on a new touch start/move.
|
|
// Regardless, whoever is the responder after any potential transfer, we
|
|
// direct all touch start/move/ends to them in the form of
|
|
// `onResponderMove/Start/End`. These will be called for *every* additional
|
|
// finger that move/start/end, dispatched directly to whoever is the
|
|
// current responder at that moment, until the responder is "released".
|
|
//
|
|
// These multiple individual change touch events are are always bookended
|
|
// by `onResponderGrant`, and one of
|
|
// (`onResponderRelease/onResponderTerminate`).
|
|
var isResponderTouchStart = responderInst && isStartish(topLevelType);
|
|
var isResponderTouchMove = responderInst && isMoveish(topLevelType);
|
|
var isResponderTouchEnd = responderInst && isEndish(topLevelType);
|
|
var incrementalTouch = isResponderTouchStart ? eventTypes.responderStart : isResponderTouchMove ? eventTypes.responderMove : isResponderTouchEnd ? eventTypes.responderEnd : null;
|
|
|
|
if (incrementalTouch) {
|
|
var gesture = ResponderSyntheticEvent.getPooled(incrementalTouch, responderInst, nativeEvent, nativeEventTarget);
|
|
gesture.touchHistory = ResponderTouchHistoryStore.touchHistory;
|
|
accumulateDirectDispatches(gesture);
|
|
extracted = accumulate(extracted, gesture);
|
|
}
|
|
|
|
var isResponderTerminate = responderInst && topLevelType === TOP_TOUCH_CANCEL;
|
|
var isResponderRelease = responderInst && !isResponderTerminate && isEndish(topLevelType) && noResponderTouches(nativeEvent);
|
|
var finalTouch = isResponderTerminate ? eventTypes.responderTerminate : isResponderRelease ? eventTypes.responderRelease : null;
|
|
if (finalTouch) {
|
|
var finalEvent = ResponderSyntheticEvent.getPooled(finalTouch, responderInst, nativeEvent, nativeEventTarget);
|
|
finalEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
|
|
accumulateDirectDispatches(finalEvent);
|
|
extracted = accumulate(extracted, finalEvent);
|
|
changeResponder(null);
|
|
}
|
|
|
|
return extracted;
|
|
},
|
|
|
|
GlobalResponderHandler: null,
|
|
|
|
injection: {
|
|
/**
|
|
* @param {{onChange: (ReactID, ReactID) => void} GlobalResponderHandler
|
|
* Object that handles any change in responder. Use this to inject
|
|
* integration with an existing touch handling system etc.
|
|
*/
|
|
injectGlobalResponderHandler: function (GlobalResponderHandler) {
|
|
ResponderEventPlugin.GlobalResponderHandler = GlobalResponderHandler;
|
|
}
|
|
}
|
|
};
|
|
|
|
// Inject react-dom's ComponentTree into this module.
|
|
// Keep in sync with ReactDOM.js and ReactTestUtils.js:
|
|
var _ReactDOM$__SECRET_IN = ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events;
|
|
var getInstanceFromNode = _ReactDOM$__SECRET_IN[0];
|
|
var getNodeFromInstance = _ReactDOM$__SECRET_IN[1];
|
|
var getFiberCurrentPropsFromNode = _ReactDOM$__SECRET_IN[2];
|
|
var injectEventPluginsByName = _ReactDOM$__SECRET_IN[3];
|
|
|
|
|
|
setComponentTree(getFiberCurrentPropsFromNode, getInstanceFromNode, getNodeFromInstance);
|
|
|
|
|
|
|
|
var ReactDOMUnstableNativeDependencies = Object.freeze({
|
|
ResponderEventPlugin: ResponderEventPlugin,
|
|
ResponderTouchHistoryStore: ResponderTouchHistoryStore,
|
|
injectEventPluginsByName: injectEventPluginsByName
|
|
});
|
|
|
|
var unstableNativeDependencies = ReactDOMUnstableNativeDependencies;
|
|
|
|
module.exports = unstableNativeDependencies;
|
|
})();
|
|
}
|