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335 líneas
8.5 KiB
335 líneas
8.5 KiB
/**
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* what-input - A global utility for tracking the current input method (mouse, keyboard or touch).
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* @version v4.0.4
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* @link https://github.com/ten1seven/what-input
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* @license MIT
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*/
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(function webpackUniversalModuleDefinition(root, factory) {
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if(typeof exports === 'object' && typeof module === 'object')
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module.exports = factory();
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else if(typeof define === 'function' && define.amd)
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define("whatInput", [], factory);
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else if(typeof exports === 'object')
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exports["whatInput"] = factory();
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else
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root["whatInput"] = factory();
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})(this, function() {
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return /******/ (function(modules) { // webpackBootstrap
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/******/ // The module cache
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/******/ var installedModules = {};
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/******/ // The require function
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/******/ function __webpack_require__(moduleId) {
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/******/ // Check if module is in cache
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/******/ if(installedModules[moduleId])
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/******/ return installedModules[moduleId].exports;
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/******/ // Create a new module (and put it into the cache)
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/******/ var module = installedModules[moduleId] = {
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/******/ exports: {},
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/******/ id: moduleId,
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/******/ loaded: false
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/******/ };
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/******/ // Execute the module function
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/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
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/******/ // Flag the module as loaded
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/******/ module.loaded = true;
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/******/ // Return the exports of the module
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/******/ return module.exports;
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/******/ }
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/******/ // expose the modules object (__webpack_modules__)
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/******/ __webpack_require__.m = modules;
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/******/ // expose the module cache
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/******/ __webpack_require__.c = installedModules;
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/******/ // __webpack_public_path__
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/******/ __webpack_require__.p = "";
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/******/ // Load entry module and return exports
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/******/ return __webpack_require__(0);
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/******/ })
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/************************************************************************/
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/******/ ([
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/* 0 */
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/***/ function(module, exports) {
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module.exports = (function() {
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/*
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---------------
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Variables
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---------------
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*/
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// cache document.documentElement
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var docElem = document.documentElement;
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// last used input type
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var currentInput = 'initial';
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// last used input intent
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var currentIntent = null;
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// form input types
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var formInputs = [
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'input',
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'select',
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'textarea'
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];
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// list of modifier keys commonly used with the mouse and
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// can be safely ignored to prevent false keyboard detection
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var ignoreMap = [
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16, // shift
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17, // control
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18, // alt
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91, // Windows key / left Apple cmd
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93 // Windows menu / right Apple cmd
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];
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// mapping of events to input types
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var inputMap = {
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'keyup': 'keyboard',
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'mousedown': 'mouse',
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'mousemove': 'mouse',
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'MSPointerDown': 'pointer',
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'MSPointerMove': 'pointer',
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'pointerdown': 'pointer',
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'pointermove': 'pointer',
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'touchstart': 'touch'
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};
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// array of all used input types
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var inputTypes = [];
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// boolean: true if touch buffer timer is running
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var isBuffering = false;
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// map of IE 10 pointer events
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var pointerMap = {
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2: 'touch',
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3: 'touch', // treat pen like touch
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4: 'mouse'
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};
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// touch buffer timer
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var touchTimer = null;
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/*
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---------------
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Set up
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---------------
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*/
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var setUp = function() {
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// add correct mouse wheel event mapping to `inputMap`
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inputMap[detectWheel()] = 'mouse';
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addListeners();
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setInput();
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};
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/*
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---------------
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Events
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---------------
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*/
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var addListeners = function() {
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// `pointermove`, `MSPointerMove`, `mousemove` and mouse wheel event binding
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// can only demonstrate potential, but not actual, interaction
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// and are treated separately
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// pointer events (mouse, pen, touch)
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if (window.PointerEvent) {
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docElem.addEventListener('pointerdown', updateInput);
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docElem.addEventListener('pointermove', setIntent);
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} else if (window.MSPointerEvent) {
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docElem.addEventListener('MSPointerDown', updateInput);
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docElem.addEventListener('MSPointerMove', setIntent);
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} else {
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// mouse events
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docElem.addEventListener('mousedown', updateInput);
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docElem.addEventListener('mousemove', setIntent);
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// touch events
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if ('ontouchstart' in window) {
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docElem.addEventListener('touchstart', touchBuffer);
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}
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}
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// mouse wheel
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docElem.addEventListener(detectWheel(), setIntent);
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// keyboard events
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docElem.addEventListener('keydown', updateInput);
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docElem.addEventListener('keyup', updateInput);
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};
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// checks conditions before updating new input
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var updateInput = function(event) {
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// only execute if the touch buffer timer isn't running
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if (!isBuffering) {
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var eventKey = event.which;
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var value = inputMap[event.type];
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if (value === 'pointer') value = pointerType(event);
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if (
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currentInput !== value ||
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currentIntent !== value
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) {
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var activeInput = (
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document.activeElement &&
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formInputs.indexOf(document.activeElement.nodeName.toLowerCase()) === -1
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) ? true : false;
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if (
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value === 'touch' ||
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// ignore mouse modifier keys
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(value === 'mouse' && ignoreMap.indexOf(eventKey) === -1) ||
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// don't switch if the current element is a form input
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(value === 'keyboard' && activeInput)
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) {
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// set the current and catch-all variable
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currentInput = currentIntent = value;
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setInput();
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}
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}
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}
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};
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// updates the doc and `inputTypes` array with new input
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var setInput = function() {
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docElem.setAttribute('data-whatinput', currentInput);
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docElem.setAttribute('data-whatintent', currentInput);
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if (inputTypes.indexOf(currentInput) === -1) {
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inputTypes.push(currentInput);
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docElem.className += ' whatinput-types-' + currentInput;
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}
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};
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// updates input intent for `mousemove` and `pointermove`
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var setIntent = function(event) {
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// only execute if the touch buffer timer isn't running
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if (!isBuffering) {
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var value = inputMap[event.type];
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if (value === 'pointer') value = pointerType(event);
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if (currentIntent !== value) {
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currentIntent = value;
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docElem.setAttribute('data-whatintent', currentIntent);
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}
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}
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};
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// buffers touch events because they frequently also fire mouse events
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var touchBuffer = function(event) {
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// clear the timer if it happens to be running
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window.clearTimeout(touchTimer);
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// set the current input
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updateInput(event);
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// set the isBuffering to `true`
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isBuffering = true;
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// run the timer
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touchTimer = window.setTimeout(function() {
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// if the timer runs out, set isBuffering back to `false`
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isBuffering = false;
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}, 200);
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};
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/*
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---------------
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Utilities
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---------------
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*/
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var pointerType = function(event) {
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if (typeof event.pointerType === 'number') {
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return pointerMap[event.pointerType];
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} else {
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return (event.pointerType === 'pen') ? 'touch' : event.pointerType; // treat pen like touch
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}
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};
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// detect version of mouse wheel event to use
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// via https://developer.mozilla.org/en-US/docs/Web/Events/wheel
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var detectWheel = function() {
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return 'onwheel' in document.createElement('div') ?
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'wheel' : // Modern browsers support "wheel"
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document.onmousewheel !== undefined ?
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'mousewheel' : // Webkit and IE support at least "mousewheel"
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'DOMMouseScroll'; // let's assume that remaining browsers are older Firefox
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};
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/*
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---------------
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Init
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don't start script unless browser cuts the mustard
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(also passes if polyfills are used)
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---------------
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*/
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if (
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'addEventListener' in window &&
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Array.prototype.indexOf
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) {
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setUp();
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}
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/*
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---------------
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API
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---------------
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*/
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return {
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// returns string: the current input type
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// opt: 'loose'|'strict'
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// 'strict' (default): returns the same value as the `data-whatinput` attribute
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// 'loose': includes `data-whatintent` value if it's more current than `data-whatinput`
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ask: function(opt) { return (opt === 'loose') ? currentIntent : currentInput; },
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// returns array: all the detected input types
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types: function() { return inputTypes; }
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};
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}());
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/***/ }
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/******/ ])
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});
|
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;
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