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Code Issues Releases Wiki Activity

Merge pull request #269 from whiteout-io/dev/wo-630

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[WO-630] Added winstore-jscompat.js for Windows Apps compatibility
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Tankred Hase 2015-04-16 16:56:28 +02:00
commit cf85fbd2ee
2 changed files with 175 additions and 0 deletions
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1
Gruntfile.js
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@ -276,6 +276,7 @@ module.exports = function(grunt) {
},
app: {
src: [
'src/lib/winstore-jscompat.js',
'src/lib/underscore/underscore.js',
'node_modules/jquery/dist/jquery.min.js',
'src/lib/angular/angular.js',

174
src/lib/winstore-jscompat.js Normal file
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@ -0,0 +1,174 @@
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
// JavaScript Dynamic Content shim for Windows Store apps
(function () {
if (window.MSApp && MSApp.execUnsafeLocalFunction) {
// Some nodes will have an "attributes" property which shadows the Node.prototype.attributes property
// and means we don't actually see the attributes of the Node (interestingly the VS debug console
// appears to suffer from the same issue).
//
var Element_setAttribute = Object.getOwnPropertyDescriptor(Element.prototype, "setAttribute").value;
var Element_removeAttribute = Object.getOwnPropertyDescriptor(Element.prototype, "removeAttribute").value;
var HTMLElement_insertAdjacentHTMLPropertyDescriptor = Object.getOwnPropertyDescriptor(HTMLElement.prototype, "insertAdjacentHTML");
var Node_get_attributes = Object.getOwnPropertyDescriptor(Node.prototype, "attributes").get;
var Node_get_childNodes = Object.getOwnPropertyDescriptor(Node.prototype, "childNodes").get;
var detectionDiv = document.createElement("div");
function getAttributes(element) {
return Node_get_attributes.call(element);
}
function setAttribute(element, attribute, value) {
try {
Element_setAttribute.call(element, attribute, value);
} catch (e) {
// ignore
}
}
function removeAttribute(element, attribute) {
Element_removeAttribute.call(element, attribute);
}
function childNodes(element) {
return Node_get_childNodes.call(element);
}
function empty(element) {
while (element.childNodes.length) {
element.removeChild(element.lastChild);
}
}
function insertAdjacentHTML(element, position, html) {
HTMLElement_insertAdjacentHTMLPropertyDescriptor.value.call(element, position, html);
}
function inUnsafeMode() {
var isUnsafe = true;
try {
detectionDiv.innerHTML = "<test/>";
}
catch (ex) {
isUnsafe = false;
}
return isUnsafe;
}
function cleanse(html, targetElement) {
var cleaner = document.implementation.createHTMLDocument("cleaner");
empty(cleaner.documentElement);
MSApp.execUnsafeLocalFunction(function () {
insertAdjacentHTML(cleaner.documentElement, "afterbegin", html);
});
var scripts = cleaner.documentElement.querySelectorAll("script");
Array.prototype.forEach.call(scripts, function (script) {
switch (script.type.toLowerCase()) {
case "":
script.type = "text/inert";
break;
case "text/javascript":
case "text/ecmascript":
case "text/x-javascript":
case "text/jscript":
case "text/livescript":
case "text/javascript1.1":
case "text/javascript1.2":
case "text/javascript1.3":
script.type = "text/inert-" + script.type.slice("text/".length);
break;
case "application/javascript":
case "application/ecmascript":
case "application/x-javascript":
script.type = "application/inert-" + script.type.slice("application/".length);
break;
default:
break;
}
});
function cleanseAttributes(element) {
var attributes = getAttributes(element);
if (attributes && attributes.length) {
// because the attributes collection is live it is simpler to queue up the renames
var events;
for (var i = 0, len = attributes.length; i < len; i++) {
var attribute = attributes[i];
var name = attribute.name;
if ((name[0] === "o" || name[0] === "O") &&
(name[1] === "n" || name[1] === "N")) {
events = events || [];
events.push({ name: attribute.name, value: attribute.value });
}
}
if (events) {
for (var i = 0, len = events.length; i < len; i++) {
var attribute = events[i];
removeAttribute(element, attribute.name);
setAttribute(element, "x-" + attribute.name, attribute.value);
}
}
}
var children = childNodes(element);
for (var i = 0, len = children.length; i < len; i++) {
cleanseAttributes(children[i]);
}
}
cleanseAttributes(cleaner.documentElement);
var cleanedNodes = [];
if (targetElement.tagName === 'HTML') {
cleanedNodes = Array.prototype.slice.call(document.adoptNode(cleaner.documentElement).childNodes);
} else {
if (cleaner.head) {
cleanedNodes = cleanedNodes.concat(Array.prototype.slice.call(document.adoptNode(cleaner.head).childNodes));
}
if (cleaner.body) {
cleanedNodes = cleanedNodes.concat(Array.prototype.slice.call(document.adoptNode(cleaner.body).childNodes));
}
}
return cleanedNodes;
}
function cleansePropertySetter(property, setter) {
var propertyDescriptor = Object.getOwnPropertyDescriptor(HTMLElement.prototype, property);
var originalSetter = propertyDescriptor.set;
Object.defineProperty(HTMLElement.prototype, property, {
get: propertyDescriptor.get,
set: function (value) {
if(window.WinJS && window.WinJS._execUnsafe && inUnsafeMode()) {
originalSetter.call(this, value);
} else {
var that = this;
var nodes = cleanse(value, that);
MSApp.execUnsafeLocalFunction(function () {
setter(propertyDescriptor, that, nodes);
});
}
},
enumerable: propertyDescriptor.enumerable,
configurable: propertyDescriptor.configurable,
});
}
cleansePropertySetter("innerHTML", function (propertyDescriptor, target, elements) {
empty(target);
for (var i = 0, len = elements.length; i < len; i++) {
target.appendChild(elements[i]);
}
});
cleansePropertySetter("outerHTML", function (propertyDescriptor, target, elements) {
for (var i = 0, len = elements.length; i < len; i++) {
target.insertAdjacentElement("afterend", elements[i]);
}
target.parentNode.removeChild(target);
});
}
}());