devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
92 lines (91 loc) • 3.39 kB
JavaScript
/**
* DevExtreme (esm/mobile/init_mobile_viewport/init_mobile_viewport.js)
* Version: 21.1.4
* Build date: Mon Jun 21 2021
*
* Copyright (c) 2012 - 2021 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
import $ from "../../core/renderer";
import domAdapter from "../../core/dom_adapter";
import {
getWindow
} from "../../core/utils/window";
var window = getWindow();
import eventsEngine from "../../events/core/events_engine";
import {
extend
} from "../../core/utils/extend";
import resizeCallbacks from "../../core/utils/resize_callbacks";
import {
supportProp,
touch
} from "../../core/utils/support";
import {
styleProp
} from "../../core/utils/style";
import devices from "../../core/devices";
export var initMobileViewport = function(options) {
options = extend({}, options);
var realDevice = devices.real();
var allowZoom = options.allowZoom;
var allowPan = options.allowPan;
var allowSelection = "allowSelection" in options ? options.allowSelection : "generic" === realDevice.platform;
if (!$("meta[name=viewport]").length) {
$("<meta>").attr("name", "viewport").appendTo("head")
}
var metaVerbs = ["width=device-width"];
var msTouchVerbs = [];
if (allowZoom) {
msTouchVerbs.push("pinch-zoom")
} else {
metaVerbs.push("initial-scale=1.0", "maximum-scale=1.0, user-scalable=no")
}
if (allowPan) {
msTouchVerbs.push("pan-x", "pan-y")
}
if (!allowPan && !allowZoom) {
$("html, body").css({
msContentZooming: "none",
msUserSelect: "none",
overflow: "hidden"
})
} else {
$("html").css("msOverflowStyle", "-ms-autohiding-scrollbar")
}
if (!allowSelection && supportProp("userSelect")) {
$(".dx-viewport").css(styleProp("userSelect"), "none")
}
$("meta[name=viewport]").attr("content", metaVerbs.join());
$("html").css("msTouchAction", msTouchVerbs.join(" ") || "none");
realDevice = devices.real();
if (touch) {
eventsEngine.off(domAdapter.getDocument(), ".dxInitMobileViewport");
eventsEngine.on(domAdapter.getDocument(), "dxpointermove.dxInitMobileViewport", (function(e) {
var count = e.pointers.length;
var isTouchEvent = "touch" === e.pointerType;
var zoomDisabled = !allowZoom && count > 1;
var panDisabled = !allowPan && 1 === count && !e.isScrollingEvent;
if (isTouchEvent && (zoomDisabled || panDisabled)) {
e.preventDefault()
}
}))
}
if (realDevice.ios) {
var isPhoneGap = "file:" === domAdapter.getLocation().protocol;
if (!isPhoneGap) {
resizeCallbacks.add((function() {
var windowWidth = $(window).width();
$("body").width(windowWidth)
}))
}
}
if (realDevice.android) {
resizeCallbacks.add((function() {
setTimeout((function() {
var activeElement = domAdapter.getActiveElement();
activeElement.scrollIntoViewIfNeeded ? activeElement.scrollIntoViewIfNeeded() : activeElement.scrollIntoView(false)
}))
}))
}
};