Navigation History
Visão Geral
The NavigationHistory class allows you to manage and interact with the browsing history of your Electron application. This powerful feature enables you to create intuitive navigation experiences for your users.
Accessing NavigationHistory
Navigation history is stored per WebContents
instance. To access a specific instance of the NavigationHistory class, use the WebContents class's contents.navigationHistory
instance property.
const { BrowserWindow } = require('electron')
const mainWindow = new BrowserWindow()
const { navigationHistory } = mainWindow.webContents
Navigating through history
Easily implement back and forward navigation:
// Go back
if (navigationHistory.canGoBack()) {
navigationHistory.goBack()
}
// Go forward
if (navigationHistory.canGoForward()) {
navigationHistory.goForward()
}
Accessing history entries
Retrieve and display the user's browsing history:
const entries = navigationHistory.getAllEntries()
entries.forEach((entry) => {
console.log(`${entry.title}: ${entry.url}`)
})
Each navigation entry corresponds to a specific page. The indexing system follows a sequential order:
- Index 0: Represents the earliest visited page.
- Index N: Represents the most recent page visited.
Navigating to specific entries
Allow users to jump to any point in their browsing history:
// Navigate to the 5th entry in the history, if the index is valid
navigationHistory.goToIndex(4)
// Navigate to the 2nd entry forward from the current position
if (navigationHistory.canGoToOffset(2)) {
navigationHistory.goToOffset(2)
}
Here's a full example that you can open with Electron Fiddle:
- main.js
- preload.js
- index.html
- renderer.js
- style.css
const { app, BrowserWindow, BrowserView, ipcMain } = require('electron')
const path = require('path')
function createWindow () {
const mainWindow = new BrowserWindow({
width: 1000,
height: 800,
webPreferences: {
preload: path.join(__dirname, 'preload.js'),
nodeIntegration: false,
contextIsolation: true
}
})
mainWindow.loadFile('index.html')
const view = new BrowserView()
mainWindow.setBrowserView(view)
view.setBounds({ x: 0, y: 100, width: 1000, height: 800 })
view.setAutoResize({ width: true, height: true })
const navigationHistory = view.webContents.navigationHistory
ipcMain.handle('nav:back', () =>
navigationHistory.goBack()
)
ipcMain.handle('nav:forward', () => {
navigationHistory.goForward()
})
ipcMain.handle('nav:canGoBack', () => navigationHistory.canGoBack())
ipcMain.handle('nav:canGoForward', () => navigationHistory.canGoForward())
ipcMain.handle('nav:loadURL', (_, url) =>
view.webContents.loadURL(url)
)
ipcMain.handle('nav:getCurrentURL', () => view.webContents.getURL())
ipcMain.handle('nav:getHistory', () => {
return navigationHistory.getAllEntries()
})
view.webContents.on('did-navigate', () => {
mainWindow.webContents.send('nav:updated')
})
view.webContents.on('did-navigate-in-page', () => {
mainWindow.webContents.send('nav:updated')
})
}
app.whenReady().then(createWindow)
app.on('window-all-closed', () => {
if (process.platform !== 'darwin') app.quit()
})
app.on('activate', () => {
if (BrowserWindow.getAllWindows().length === 0) createWindow()
})
const { contextBridge, ipcRenderer } = require('electron')
contextBridge.exposeInMainWorld('electronAPI', {
goBack: () => ipcRenderer.invoke('nav:back'),
goForward: () => ipcRenderer.invoke('nav:forward'),
canGoBack: () => ipcRenderer.invoke('nav:canGoBack'),
canGoForward: () => ipcRenderer.invoke('nav:canGoForward'),
loadURL: (url) => ipcRenderer.invoke('nav:loadURL', url),
getCurrentURL: () => ipcRenderer.invoke('nav:getCurrentURL'),
getHistory: () => ipcRenderer.invoke('nav:getHistory'),
onNavigationUpdate: (callback) => ipcRenderer.on('nav:updated', callback)
})
<!DOCTYPE html>
<html>
<head>
<title>Enhanced Browser with Navigation History</title>
<link href="styles.css" rel="stylesheet" />
</head>
<body>
<div id="controls">
<button id="backBtn" title="Go back">Back</button>
<button id="forwardBtn" title="Go forward">Forward</button>
<button id="backHistoryBtn" title="Show back history">Back History</button>
<button id="forwardHistoryBtn" title="Show forward history">Forward History</button>
<input id="urlInput" type="text" placeholder="Enter URL">
<button id="goBtn" title="Navigate to URL">Go</button>
</div>
<div id="historyPanel" class="history-panel"></div>
<div id="description">
<h2>Navigation History Demo</h2>
<p>This demo showcases Electron's NavigationHistory API functionality.</p>
<p><strong>Back/Forward:</strong> Navigate through your browsing history.</p>
<p><strong>Back History/Forward History:</strong> View and select from your browsing history.</p>
<p><strong>URL Bar:</strong> Enter a URL and click 'Go' or press Enter to navigate.</p>
</div>
<script src="renderer.js"></script>
</body>
</html>
const backBtn = document.getElementById('backBtn')
const forwardBtn = document.getElementById('forwardBtn')
const backHistoryBtn = document.getElementById('backHistoryBtn')
const forwardHistoryBtn = document.getElementById('forwardHistoryBtn')
const urlInput = document.getElementById('urlInput')
const goBtn = document.getElementById('goBtn')
const historyPanel = document.getElementById('historyPanel')
async function updateButtons () {
const canGoBack = await window.electronAPI.canGoBack()
const canGoForward = await window.electronAPI.canGoForward()
backBtn.disabled = !canGoBack
backHistoryBtn.disabled = !canGoBack
forwardBtn.disabled = !canGoForward
forwardHistoryBtn.disabled = !canGoForward
}
async function updateURL () {
urlInput.value = await window.electronAPI.getCurrentURL()
}
function transformURL (url) {
if (!url.startsWith('http://') && !url.startsWith('https://')) {
const updatedUrl = 'https://' + url
return updatedUrl
}
return url
}
async function navigate (url) {
const urlInput = transformURL(url)
await window.electronAPI.loadURL(urlInput)
}
async function showHistory (forward = false) {
const history = await window.electronAPI.getHistory()
const currentIndex = history.findIndex(entry => entry.url === transformURL(urlInput.value))
if (!currentIndex) {
return
}
const relevantHistory = forward
? history.slice(currentIndex + 1)
: history.slice(0, currentIndex).reverse()
historyPanel.innerHTML = ''
relevantHistory.forEach(entry => {
const div = document.createElement('div')
div.textContent = `Title: ${entry.title}, URL: ${entry.url}`
div.onclick = () => navigate(entry.url)
historyPanel.appendChild(div)
})
historyPanel.style.display = 'block'
}
backBtn.addEventListener('click', () => window.electronAPI.goBack())
forwardBtn.addEventListener('click', () => window.electronAPI.goForward())
backHistoryBtn.addEventListener('click', () => showHistory(false))
forwardHistoryBtn.addEventListener('click', () => showHistory(true))
goBtn.addEventListener('click', () => navigate(urlInput.value))
urlInput.addEventListener('keypress', (e) => {
if (e.key === 'Enter') {
navigate(urlInput.value)
}
})
document.addEventListener('click', (e) => {
if (e.target !== historyPanel && !historyPanel.contains(e.target) &&
e.target !== backHistoryBtn && e.target !== forwardHistoryBtn) {
historyPanel.style.display = 'none'
}
})
window.electronAPI.onNavigationUpdate(() => {
updateButtons()
updateURL()
})
updateButtons()
body {
margin: 0;
font-family: Arial, sans-serif;
background-color: #f0f0f0;
}
#controls {
display: flex;
align-items: center;
padding: 10px;
background-color: #ffffff;
border-bottom: 1px solid #ccc;
}
button {
margin-right: 10px;
padding: 8px 12px;
font-size: 14px;
background-color: #4CAF50;
color: white;
border: none;
cursor: pointer;
transition: background-color 0.3s;
}
button:hover {
background-color: #45a049;
}
button:disabled {
background-color: #cccccc;
cursor: not-allowed;
}
#urlInput {
flex-grow: 1;
margin: 0 10px;
padding: 8px;
font-size: 14px;
}
#historyPanel {
display: none;
position: absolute;
top: 60px;
left: 10px;
background: white;
border: 1px solid #ccc;
padding: 10px;
max-height: 300px;
overflow-y: auto;
z-index: 1000;
}
#historyPanel div {
cursor: pointer;
padding: 5px;
}
#description {
background-color: #f0f0f0;
padding: 10px;
margin-top: 150px;
}