View html immediately
Per
// ==UserScript==
// @name CF-Html-Viewer
// @version 0.3.1
// @description View html immediately
// @author Iverycool
// @namespace Cyberforum
// @match https://www.cyberforum.ru/*
// @grant none
// ==/UserScript==
(function() {
const $ = (sec, node = document) => node.querySelector(sec);
const $$ = (sec, node = document) => node.querySelectorAll(sec);
const size = 1.4;
// const isFF = ~navigator.userAgent.search(/firefox/i);
const styles = {
but: 'color: rgb(96, 96, 96); font-weight: normal; margin-left: 5px;',
rightBut: 'color: rgb(96, 96, 96); font-weight: normal; float: right;',
frame: 'display: block; width: 100%;',
textarea: getStyleString({
'position': 'absolute',
'margin': 0,
'padding': 0,
'border': 'transparent',
'background': 'transparent',
'color': 'transparent',
'font-family': 'Consolas,Monaco,\'Andale Mono\',\'Ubuntu Mono\',monospace',
'font-size': '1em',
'line-height': size + ' !important',
'white-space': 'pre',
'caret-color': 'black',
'outline': 'none',
'resize': 'none'
})
}
const sels = {
codeFrame: 'div.codeframe',
codePre: 'td.de1 > pre.de1',
lnPre: 'td.ln > pre.de1'
}
document.addEventListener('DOMContentLoaded', () => {
// debugger;
init().then(() => $$('#posts div[id^="post_message_"]').forEach(register));
});
function init() {
const prismStyle = createElem('link', document.head);
prismStyle.rel = 'stylesheet';
prismStyle.href = 'https://cdnjs.cloudflare.com/ajax/libs/prism/1.20.0/themes/prism.min.css';
const myStyle = createElem('style', document.head);
myStyle.innerHTML = 'pre.de1, pre.de1 * { line-height: ' + size + ' !important }' +
['html5', 'phphtml', 'css', 'javascript'].map(name =>
`table.${name} > tbody {background: #f5f2f0 !important}`
).join('');
const prismScript = createElem('script', document.head);
prismScript.type = 'text/javascript';
prismScript.src = 'https://cdnjs.cloudflare.com/ajax/libs/prism/1.20.0/prism.min.js';
return new Promise(res => prismScript.onload = res);
}
function register(post) {
const viewer = new Viewer();
const htmlNodes = $$('table.html5, table.phphtml', post);
const cssNodes = $$('table.css', post);
const jsNodes = $$('table.javascript', post);
htmlNodes.forEach(htmlNode => {
makeViewerLink(viewer, htmlNode);
makeEditableLink(viewer, htmlNode, 'html');
stylize(htmlNode, 'html');
});
cssNodes.forEach(cssNode => {
makeUseLink(viewer, cssNode, 'style');
makeEditableLink(viewer, cssNode, 'css');
stylize(cssNode, 'css');
});
jsNodes.forEach(jsNode => {
createLink({
parentNode: $('.head', jsNode),
style: styles.but,
text: 'Выполнить',
onClick: () => eval($(sels.codePre, jsNode).innerText)
});
makeUseLink(viewer, jsNode, 'script');
makeEditableLink(jsNode, 'js');
stylize(jsNode, 'js');
});
}
class Viewer {
style = [];
script = [];
mounted = false;
create(parent, htmlCode, onClose = () => {}) {
this.clean();
this.mounted = true;
this.html = htmlCode.replace(/ /g, '');
this.container = createElem('tfoot', parent);
createLink({
parentNode: this.container,
style: styles.but,
text: 'Открыть в новом окне',
onClick: () => this.openInNewWin()
});
createLink({
parentNode: this.container,
style: styles.but,
text: 'Скачать страницу',
onClick: () => this.download()
})
createLink({
parentNode: this.container,
style: styles.rightBut,
text: 'Закрыть',
onClick: () => (this.clean(), onClose())
});
this.iframe = createElem('iframe', this.container);
this.iframe.style = styles.frame;
this.update();
}
clean() {
if (this.container) this.container.remove();
this.iframe = null;
this.doc = null;
this.html = '';
this.mounted = false;
}
add(id, code, type) {
if (!this.mounted) return false;
const ind = this[type].findIndex(el => el[0] == id);
if (~ind) {
this[type].splice(ind, 1, [id, code.replace(/ /g, '')])
} else {
this[type].push([id, code.replace(/ /g, '')]);
}
this.update();
return true;
}
has(id, type) {
return !!(~this[type].findIndex(el => el[0] == id));
}
remove(id, type) {
const ind = this[type].findIndex(el => el[0] == id);
const res = (~ind) ? !!this[type].splice(ind, 1) : false;
this.update();
return res;
}
update(code) {
if (!this.mounted) return;
if (code) this.html = code;
const str = this._compile();
this.iframe.src = 'about:blank';
this.iframe.onload = () => {
this.doc = this.iframe.contentWindow.document;
this.doc.write(str);
this.doc.close();
this.updateFrameHeight();
}
}
updateFrameHeight() {
const coords = getCoords(this.doc.body.lastElementChild, this.iframe.contentWindow);
const contentHeight = coords.top + coords.height;
const frameHeight = (contentHeight > 500) ? '500px' : contentHeight + 16 + 'px';
this.iframe.style.height = frameHeight;
}
openInNewWin() {
const str = this._compile();
const win = window.open('about:blank');
win.onload = () => {
win.document.write(str);
win.document.close();
}
}
download() {
const str = this._compile();
const id = this.container.parentElement.querySelector(sels.codeFrame).id;
const a = createElem('a');
a.download = `doc-${id}.html`;
a.href = 'data:text/html;charset=UTF-8,' + str;
a.click();
a.remove();
}
_compile() {
const wrap = (arr, type) =>
arr.map(([,code]) => `<${type}>${code}</${type}>`).join('');
return wrap(this.style, 'style') + wrap(this.script, 'script') + this.html;
}
}
function stylize(node, type) {
const pre = $(sels.codePre, node);
const code = Prism.highlight(pre.innerText, Prism.languages[type]);
pre.classList.add(`language-${type}`);
pre.innerHTML = `<code class="language-${type}">${code}</code>`;
updateCodeFrameHeight($(sels.codeFrame, node));
}
function updateCodeFrameHeight(div) {
const conHeight = getCoords(div.firstChild).height;
div.style.height = ((conHeight > 570) ? 590 : conHeight + 20) + 'px';
}
function makeViewerLink(viewer, htmlNode) {
const makeObj = {
text: 'Показать viewer',
onClick: function() {
viewer.create(htmlNode, $(sels.codePre, htmlNode).innerText, () => {
this.update(makeObj);
});
this.update(unMakeObj);
}
}
const unMakeObj = {
text: 'Обновить viewer',
onClick: () => viewer.update($(sels.codePre, htmlNode).innerText)
}
createLink({
parentNode: $('.head', htmlNode),
style: styles.but,
...makeObj
});
}
function makeUseLink(viewer, codeNode, type) {
const id = $(sels.codeFrame, codeNode).id;
const useObj = {
text: 'Использовать в viewer',
onClick: function() {
if (viewer.add(id, $(sels.codePre, codeNode).innerText, type)) {
this.update(unUseObj);
}
}
}
const unUseObj = {
text: 'Отвязать от viewer',
onClick: function() {
viewer.remove(id, type);
this.update(useObj);
}
}
createLink({
parentNode: $('.head', codeNode),
style: styles.but,
...useObj
});
}
function makeEditableLink(viewer, node, type) {
const id = $(sels.codeFrame, node).id;
let textarea, autoReloadingLink;
const makeObj = {
text: 'Редактировать',
onClick: function() {
textarea = makeInput($(sels.codePre, node), type);
this.update(unMakeObj);
autoReloadingLink = makeAutoReloadingLink();
}
}
const unMakeObj = {
text: 'Отменить редактирование',
onClick: function() {
textarea.remove();
autoReloadingLink.remove();
this.update(makeObj);
}
}
createLink({
parentNode: $('.head', node),
style: styles.but,
...makeObj
});
function makeAutoReloadingLink() {
const makeObj = {
style: styles.but + 'color: rgb(130, 130, 130);',
text: 'AutoReloading - off',
onClick: function() {
textarea.onInput = function(text) {
if (type === 'html') {
viewer.update(text);
} else {
viewer.add(id, text, type === 'js' ? 'script' : 'style');
}
}
this.update(unMakeObj);
}
};
const unMakeObj = {
style: styles.but + 'color: green',
text: 'AutoReloading - on',
onClick: function() {
textarea.onInput = null;
this.update(makeObj);
}
};
return createLink({
parentNode: $('.head', node),
...makeObj
});
}
}
function makeInput(pre, type, onInput = () => {}) {
const div = pre.closest(sels.codeFrame);
const lnPre = div.querySelector(sels.lnPre);
const textarea = createElem('textarea', pre.parentElement);
const divScroll = {
left: div.scrollLeft,
top: div.scrollTop
}
div.scrollTo(0, 0);
const preCoords = getCoords(pre);
const divCoords = getCoords(div);
const paddingLeft = preCoords.left - divCoords.left;
const paddingTop = preCoords.top - divCoords.top;
textarea.style = styles.textarea + getStyleString({
'padding-left': paddingLeft + 'px',
'padding-top': paddingTop + 'px'
});
updateTextarea();
textarea.spellcheck = false;
textarea.value = pre.innerText;
textarea.scrollTo(divScroll.left, divScroll.top);
div.scrollTo(divScroll.left, divScroll.top);
textarea.oninput = () => {
const text = textarea.value;
const textLen = text.split('\n').length;
const code = Prism.highlight(text, Prism.languages[type]);
pre.innerHTML = `<code class="language-${type}">${code}</code>`;
lnPre.innerText = new Array(textLen).fill(1).map((_, i) => i + 1).join('\n');
(textarea.onInput || onInput)(text);
updateCodeFrameHeight(div);
updateTextarea();
}
textarea.onscroll = () => div.scrollTo(textarea.scrollLeft, textarea.scrollTop);
function updateTextarea() {
const tStyle = textarea.style;
const divCoords = getCoords(div);
tStyle.width = divCoords.width - paddingLeft + 'px';
tStyle.height = divCoords.height - paddingTop + 'px';
tStyle.left = divCoords.left + 'px';
tStyle.top = divCoords.top + 'px';
}
return textarea;
}
// Utils
function createElem(name, parentNode = document.documentElement) {
const elem = document.createElement(name);
parentNode.appendChild(elem);
return elem;
}
function createLink({parentNode = document.documentElement, style, text, onClick = () => {}}) {
const a = createElem('a', parentNode);
a.style = style;
a.href = '#';
a.innerText = text;
a.onclick = function(ev) {
ev.preventDefault();
onClick.call(a, ev);
}
a.update = function({style: newStyle, text: newText, onClick: newOnClick}) {
a.style = newStyle || style;
a.innerText = newText || text;
a.onclick = function(ev) {
ev.preventDefault();
(newOnClick || onClick).call(a, ev);
}
}
return a;
}
function getStyleString(obj) {
return Object.entries(obj).reduce((str, [key, value]) => str + `${key}:${value};`, '');
}
function getCoords(elem, win = window) {
const box = elem.getBoundingClientRect();
return {
top: box.top + win.pageYOffset,
left: box.left + win.pageXOffset,
width: box.width,
height: box.height
}
}
})();