ctrlMarcio · November 30, 2025 10:23 · f-x-n · May 29, 2023 · ctrlMarcio · May 30, 2023
diff --git a/arc-whatsapp-sidebar.js b/arc-whatsapp-sidebar.js
 const HALF_OPEN_WIDTH = 80
 // this value starts as -1
 // and is updated when the sidebar is updated the first time
 // this is the width to which the sidebar will resize when it is fully open
 let SIDEBAR_WIDTH = -1

 // state enumerator, can only be closed, half-closed, and open
 const state = {
 	closed: 0,
 	halfClosed: 1,
 	open: 2,
 }

 // initial state of the sidebar is open
 let currentState = state.open

 // waits for the sidebar to open to start the script
 const waitForElement = (selector) => {
 	return new Promise((resolve) => {
 		const elementToLookup = document.querySelector(selector)
 		if (elementToLookup) {
 			resolve(elementToLookup)
 		}
 		new MutationObserver((_, observer) => {
 			// Query for elements matching the specified selector
 			Array.from(document.querySelectorAll(selector)).forEach((element) => {
 				resolve(element)
 				//Once we have resolved we don't need the observer anymore.
 				observer.disconnect()
 			})
 		}).observe(document.documentElement, {
 			childList: true,
 			subtree: true,
 		})
 	})
 }

 function createExpandButton(element) {
 	const btn = document.createElement('button')
 	btn.innerHTML =
 		'<svg width="24px" height="24px" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path d="M15.2928932,12 L12.1464466,8.85355339 C11.9511845,8.65829124 11.9511845,8.34170876 12.1464466,8.14644661 C12.3417088,7.95118446 12.6582912,7.95118446 12.8535534,8.14644661 L16.8535534,12.1464466 C17.0488155,12.3417088 17.0488155,12.6582912 16.8535534,12.8535534 L12.8535534,16.8535534 C12.6582912,17.0488155 12.3417088,17.0488155 12.1464466,16.8535534 C11.9511845,16.6582912 11.9511845,16.3417088 12.1464466,16.1464466 L15.2928932,13 L4.5,13 C4.22385763,13 4,12.7761424 4,12.5 C4,12.2238576 4.22385763,12 4.5,12 L15.2928932,12 Z M19,5.5 C19,5.22385763 19.2238576,5 19.5,5 C19.7761424,5 20,5.22385763 20,5.5 L20,19.5 C20,19.7761424 19.7761424,20 19.5,20 C19.2238576,20 19,19.7761424 19,19.5 L19,5.5 Z"/></svg>'

 	Object.assign(btn.style, {
 		position: 'absolute',
 		top: '0',
 		left: '0',
 		margin: '50px 0',
 		padding: '15px 15px 15px 5px',
 		zIndex: '9999',
 		borderRadius: '0 50px 50px 0',
 		backgroundColor: '#00a884',
 		boxShadow: '10px 20px 52px 3px #037259',
 		transitionDuration: '0.3s',
 	})

 	// add little expand animation
 	btn.addEventListener('mouseenter', () => {
 		btn.style.transform = 'scale(1.1)'
 	})
 	btn.addEventListener('mouseleave', () => {
 		btn.style.transform = 'scale(1)'
 	})

 	// when click on the button, show element
 	btn.addEventListener('click', () => {
 		// if it is closed, make it half open
 		if (currentState === state.closed) {
 			element.style.display = 'block'
 			currentState = state.halfClosed
 			setSideBarWidth(HALF_OPEN_WIDTH)
 		} else if (currentState === state.halfClosed) {
 			// if it is half open, make it fully open
 			currentState = state.open
 			setSideBarWidth(SIDEBAR_WIDTH)
 			btn.remove()

 			// make all divs with this data-testid "icon-unread-count" move left
 			// so that they are not hidden by the sidebar
 			const unreadCountDivs = document.querySelectorAll('[data-testid="icon-unread-count"]')
 			unreadCountDivs.forEach((div) => {
 				// move right 37px
 				div.style.left = '15px'
 			})

 			// show the div with the _1EUay class
 			const div = document.querySelector("div[class='_1EUay']")
      div.style.display = 'block'
 		}
 	})

 	return btn
 }

 function createHideButton(element, expandBtn) {
 	const btn = document.createElement('button')
 	btn.innerHTML =
 		'<svg fill="#54656F" width="17px" heigth="17px" viewBox="-32 0 512 512" xmlns="http://www.w3.org/2000/svg"><path d="M257.5 445.1l-22.2 22.2c-9.4 9.4-24.6 9.4-33.9 0L7 273c-9.4-9.4-9.4-24.6 0-33.9L201.4 44.7c9.4-9.4 24.6-9.4 33.9 0l22.2 22.2c9.5 9.5 9.3 25-.4 34.3L136.6 216H424c13.3 0 24 10.7 24 24v32c0 13.3-10.7 24-24 24H136.6l120.5 114.8c9.8 9.3 10 24.8.4 34.3z"/></svg>'
 	btn.style.padding = '0 15px'
 	btn.addEventListener('click', () => {
 		if (currentState === state.open) {
 			// if side bar is open, half closes it
 			currentState = state.halfClosed
 			setSideBarWidth(HALF_OPEN_WIDTH)

 			// make all divs with this data-testid "icon-unread-count" move left
 			// so that they are not hidden by the sidebar
 			const unreadCountDivs = document.querySelectorAll('[data-testid="icon-unread-count"]')
 			unreadCountDivs.forEach((div) => {
 				// change position to relative
 				div.style.position = 'relative'
 				// move left 10 px
 				div.style.left = '-37px'
 			})

 			// hide the div with the _1EUay class
      const div = document.querySelector("div[class='_1EUay']")
      div.style.display = 'none'

 		} else if (currentState === state.halfClosed) {
 			// if side bar is half open, closes it completely
 			currentState = state.closed
 			element.style.display = 'none'
 		}

 		if (!expandBtn.parentElement)
 			// create expand button
 			document.body.appendChild(expandBtn)
 	})

 	return btn
 }

 waitForElement("div[class='_2Ts6i _3RGKj']").then((element) => {
 	header = element.querySelector('header')
 	// add button to header
 	expandBtn = createExpandButton(element)
 	header.appendChild(createHideButton(element, expandBtn))
 })

 function setSideBarWidth(width) {
 	const sidebar = document.querySelector("div[class='_2Ts6i _3RGKj']")
 	const mainContent = document.querySelector("div[class='_2Ts6i _2xAQV']")

 	let sidebarWidth = sidebar.clientWidth
 	if (SIDEBAR_WIDTH === -1) SIDEBAR_WIDTH = sidebarWidth
 	let mainContentWidth = mainContent.clientWidth

 	// how much sidebar has to change to get to width
 	const sidebarWidthDiff = sidebarWidth - width

 	// resize sidebar and main content
 	sidebarWidth = width
 	mainContentWidth = mainContentWidth + sidebarWidthDiff

 	// set important css for the width
 	sidebar.style.width = sidebarWidth + 'px'
 	sidebar.style.flex = '0 0 ' + sidebarWidth + 'px'
 	mainContent.style.width = mainContentWidth + 'px'
 	mainContent.style.flex = '0 0 ' + mainContentWidth + 'px'
 }
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