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contenu.js
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contenu.js
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/* eslint-disable */
class EventHandler {
init = false;
newFieldRequested = false;
eventQueue = [];
initializeMessageListener() {
window.addEventListener(
"message",
event => {
this.handler(event);
},
false
);
}
sendMessage(data) {
IFrameInitializer.contenuIframe.contentWindow.postMessage(data, "*");
}
handler(event) {
if (event.data) {
switch (event.data.type) {
case "init":
this.init = true;
this.sendMessage({
type: "init",
envMode: process.env.NODE_ENV
});
IFrameInitializer.contenuIframe.style.width = "100%";
break;
case "newFields":
this.newFieldRequested = true;
this.requestNewFields(Parser.compare(Contenu.data, Contenu.res));
Contenu.res = JSON.parse(JSON.stringify(Contenu.data));
break;
case "cssRules":
if (event.data.value) {
// make iframe big
for (let key in event.data.value) {
IFrameInitializer.contenuIframe.style[key] =
event.data.value[key];
}
}
break;
case "dataUpdate":
let obj = Contenu.data;
var stack = event.data.path.split(".");
while (stack.length > 1) {
obj = obj[stack.shift()];
}
obj[stack.shift()] = event.data.data;
break;
}
}
}
requestNewFields(objPath = null) {
if (objPath != null)
this.eventQueue.push({
type: "newField",
data: objPath
});
if (this.init) {
this.eventQueue = this.eventQueue.reverse();
for (let i in this.eventQueue) {
this.sendMessage(this.eventQueue[i]);
}
this.eventQueue = [];
}
}
}
class Parser {
static parse(obj1, result) {
for (let key in obj1) {
if (typeof obj1[key] === "object") {
if (typeof result[key] == "undefined") result[key] = {};
result[key] = Parser.parse(obj1[key], result[key]);
} else {
set(result, key, obj1[key]);
}
}
return result;
}
static compare(obj1, obj2) {
let unknownPaths = {};
for (let key in obj1) {
if (typeof obj2[key] === "undefined") {
unknownPaths[key] = JSON.parse(JSON.stringify(obj1[key]));
} else if (
typeof obj2[key] === "object" &&
typeof obj1[key] === "object"
) {
let unknownInnerPaths = Parser.compare(obj1[key], obj2[key]);
if (Object.keys(unknownInnerPaths).length > 0)
unknownPaths[key] = unknownInnerPaths;
}
}
return unknownPaths;
}
}
class IFrameInitializer {
static contenuIframe = null;
constructor(serverUrl, key) {
IFrameInitializer.contenuIframe = document.createElement("iframe");
IFrameInitializer.contenuIframe.setAttribute("id", "contenuWidget");
IFrameInitializer.contenuIframe.setAttribute(
"style",
[
"position:fixed",
"border:0",
"width:0",
"height:0",
"overflow: hidden"
].join(";")
);
IFrameInitializer.contenuIframe.setAttribute(
"src",
serverUrl + "?key=" + key
);
}
mount(doc) {
doc.appendChild(IFrameInitializer.contenuIframe);
}
remove() {
IFrameInitializer.contenuIframe.parentNode.removeChild(
IFrameInitializer.contenuIframe
);
}
}
class Contenu {
static data = {};
static props = {};
static res = {};
static serverUrl;
loaded = false;
iFrame = null;
key = "/";
static handler = null;
fetchDataAddress = "";
constructor(options) {
Contenu.serverUrl = options.serverAddress;
this.fetchDataAddress = options.fetchDataAddress || "/api/data";
Contenu.handler = new EventHandler();
Contenu.handler.initializeMessageListener();
return this;
}
start() {
Contenu.data = {};
observable(Contenu.data);
if (this.iFrame) this.iFrame.remove();
this.fetchDataFromServer();
this.initIFrame(this.key);
}
setKey(key) {
this.key = key;
Contenu.data = {};
observable(Contenu.data);
if (this.iFrame) this.iFrame.remove();
this.fetchDataFromServer();
this.initIFrame(this.key);
}
initIFrame(key) {
this.iFrame = new IFrameInitializer(Contenu.serverUrl, key);
this.iFrame.mount(document.getElementsByTagName("body")[0]);
}
fetchDataFromServer() {
fetch(Contenu.serverUrl + this.fetchDataAddress + "?key=" + this.key)
.then(response => response.json())
.then(res => {
Contenu.res = res.content;
Parser.parse(res.content, Contenu.data);
this.loaded = true;
})
.catch(error =>
console.error("Contenu is unable to connect to server", error)
);
}
}
let finder = path => {
let pathArr = path.split(".");
if (pathArr.length > 0) {
let i = 0;
let obj = Contenu.data;
while (i != pathArr.length) {
if (typeof obj[pathArr[i]] === "undefined") {
set(obj, pathArr[i], {});
}
obj = obj[pathArr[i]];
i++;
}
//empty object
if (typeof obj === "object" && Object.keys(obj).length == 0) obj = "";
// image format
if (obj.__type == "image") {
return Contenu.serverUrl + "/api/files/" + obj.__value;
}
return obj;
}
};
var set;
var observable;
export default {
install(Vue, options) {
set = Vue.set;
observable = Vue.observable;
window.$contenu = new Contenu(options);
if (options.router) {
options.router.beforeEach((to, from, next) => {
window.$contenu.setKey(to.path);
Vue.prototype.$contenu = finder;
next();
});
} else {
window.$contenu.start();
Vue.prototype.$contenu = finder;
}
}
};