devextreme/dist/transpiled/core/utils/support.js

HTML5 JavaScript Component Suite for Responsive Web Development

"use strict";

var inArray = require("./array").inArray,
    domAdapter = require("../dom_adapter"),
    callOnce = require("./call_once"),
    windowUtils = require("./window"),
    navigator = windowUtils.getNavigator(),
    devices = require("../devices"),
    styleUtils = require("./style");

var transitionEndEventNames = {
    'webkitTransition': 'webkitTransitionEnd',
    'MozTransition': 'transitionend',
    'OTransition': 'oTransitionEnd',
    'msTransition': 'MsTransitionEnd',
    'transition': 'transitionend'
};

var supportProp = function supportProp(prop) {
    return !!styleUtils.styleProp(prop);
};

var isNativeScrollingSupported = function isNativeScrollingSupported() {
    var realDevice = devices.real(),
        realPlatform = realDevice.platform,
        realVersion = realDevice.version,
        isObsoleteAndroid = realVersion && realVersion[0] < 4 && realPlatform === "android",
        isNativeScrollDevice = !isObsoleteAndroid && inArray(realPlatform, ["ios", "android", "win"]) > -1 || realDevice.mac;

    return isNativeScrollDevice;
};

var inputType = function inputType(type) {
    if (type === "text") {
        return true;
    }

    var input = domAdapter.createElement("input");
    try {
        input.setAttribute("type", type);
        input.value = "wrongValue";
        return !input.value;
    } catch (e) {
        return false;
    }
};

var touchEvents = windowUtils.hasProperty("ontouchstart") && !windowUtils.hasProperty("callPhantom"),
    pointerEvents = !!navigator.pointerEnabled || !!navigator.msPointerEnabled,
    touchPointersPresent = !!navigator.maxTouchPoints || !!navigator.msMaxTouchPoints;

exports.touchEvents = touchEvents;
exports.pointerEvents = pointerEvents;
exports.touch = touchEvents || pointerEvents && touchPointersPresent;
exports.transition = callOnce(function () {
    return supportProp("transition");
});
exports.transitionEndEventName = callOnce(function () {
    return transitionEndEventNames[styleUtils.styleProp("transition")];
});
exports.animation = callOnce(function () {
    return supportProp("animation");
});
exports.nativeScrolling = isNativeScrollingSupported();

exports.styleProp = styleUtils.styleProp;
exports.stylePropPrefix = styleUtils.stylePropPrefix;
exports.supportProp = supportProp;

exports.inputType = inputType;