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script.js
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script.js
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// Dev 2.0
// (c) Copyright 2015-2019 Stone App Technology Studio.
let $ = (selector) => {
let elements = document.querySelectorAll(selector);
if (elements.length == 1) return document.querySelector(selector);
else return elements;
}
function click(el, listener) {
return el.addEventListener('click', (e) => {
try {
listener(e);
} catch (error) {
console.error(error);
}
});
}
async function sleep(ms) {
return new Promise((resolve, reject) => {
setTimeout(resolve, ms);
});
}
// initialize the variable
let editors = {};
let previewFrame = $("#preview iframe");
let titleLabel = $('#label');
let dimmer = $('.ts.dimmer');
const languages = ["html","css","javascript"];
const exampleContent = `<!DOCTYPE html>\n<html>\n <head>\n <title>Title</title>\n </head>\n <body>\n <p>試試看，雖然我覺得不行。</p>\n </body>\n</html>`;
// initialize the environment
languages.forEach((lang) => {
let editor = ace.edit(lang);
editors[lang] = editor;
editor.setTheme("ace/theme/chrome");
editor.getSession().setMode(`ace/mode/${lang}`);
editor.getSession().setUseWrapMode(true);
editor.$blockScrolling = Infinity;
editor.commands.addCommand({
name: "renderPage",
bindKey: {win: "Ctrl-Enter", mac: "Command-Enter"},
exec: function(_editor) {
render();
}
});
});
ts('.menu .item').tab(); // ts menu tab
ts('.left.sidebar').sidebar({
dimPage: true,
closeable: false
});
// setup menu listener
languages.forEach((lang) => {
click($(`a[data-tab="${lang}"]`), (e) => {
editors[lang].renderer.updateFull();
});
});
click($('#sidebarMenu'), (e) => {
ts('.ts.sidebar').sidebar('toggle');
});
click($('#run'), render);
window.addEventListener('message', async (e) => {
console.log('onmessage');
let data = e.data;
if (data.title) {
titleLabel.textContent = data.title;
}
await sleep(300);
dimmer.classList.toggle('active', false);
});
click($('#reset'), (e) => {
editors.html.setValue(exampleContent);
editors.css.setValue("");
editors.javascript.setValue("");
});
editors.html.setValue(exampleContent);
render();
function combinePage(HTMLSource, cssSource, jsSource) {
let parser = new DOMParser();
let shadowDOM = parser.parseFromString(HTMLSource, 'text/html');
if (cssSource.trim() != "") {
let stylesheet = document.createElement('style');
stylesheet.textContent = cssSource;
shadowDOM.querySelector('head').appendChild(stylesheet);
}
if (jsSource.trim() != "") {
let script = document.createElement('script');
script.textContent = jsSource;
shadowDOM.querySelector('body').appendChild(script);
}
// post process to disable dimmer and update title
let postSource = `(() => {
console.log('iframe ready');
parent.postMessage({"status": "ready", "title": (document.title || "No title")}, "*");
// observe title changes
let observer = new MutationObserver((mutation, observer) => {
parent.postMessage({
"status": "titleUpdate",
"title": (document.title || "No title")
}, "*");
});
observer.observe(document.querySelector('title'), { childList: true, subtree: true });
})();`;
let postScript = document.createElement('script');
postScript.textContent = postSource;
shadowDOM.querySelector('body').appendChild(postScript);
return shadowDOM;
}
function render(...args) {
console.log('render')
dimmer.classList.toggle("active", true);
let source = languages.map((lang, _i) => {
return editors[lang].getValue();
});
let newDocument = combinePage(...source);
previewFrame.srcdoc = newDocument.documentElement.outerHTML;
}
// welcome
if (!localStorage.getItem("visited")) {
welcomeMessage();
}
function setState() {
localStorage.setItem('visited','true');
}
function welcomeMessage() {
swal({
html: '<h1 class="ts center aligned header">歡迎!第一次使用!</h1>',
type: "success"
});
setState();
}
function info() {
swal({
type: "info",
html: '<h2 class="ts center aligned header">About</h2>'+'<a target="_blank" href="https://tocas-ui.com/">TocasUI</a>'+' / '+'<a target="_blank" href="https://ace.c9.io/">Ace Editor</a>'
+'<p>(c) Copyright 2015-2019 Stone App Technology Studio.</p>',
showConfirmButton: false
});
}