main.py

import sys
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtWebEngineWidgets import *

print("If you're on Fedora 35 or higher, please execute this command before starting the browser!")
print('export QTWEBENGINE_CHROMIUM_FLAGS="--no-sandbox"')
class MainWindow(QMainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()
        self.browser = QWebEngineView()
        self.browser.setUrl(QUrl('https://www.startpage.com/'))
        self.setCentralWidget(self.browser)
        self.showMaximized()

        # navbar
        self.navbar = QToolBar()
        self.navbar.setMovable(False)
        # make it 50px high
        self.navbar.setIconSize(QSize(50, 50))
        self.addToolBar(self.navbar)

        back_btn = QAction('[<]', self)
        back_btn.triggered.connect(self.browser.back)
        self.navbar.addAction(back_btn)

        forward_btn = QAction('[>]', self)
        forward_btn.triggered.connect(self.browser.forward)
        self.navbar.addAction(forward_btn)

        reload_btn = QAction('[Ø]', self)
        reload_btn.triggered.connect(self.browser.reload)
        self.navbar.addAction(reload_btn)

        home_btn = QAction('[^]', self)
        home_btn.triggered.connect(self.navigate_home)
        self.navbar.addAction(home_btn)

        self.url_bar = QLineEdit()
        self.url_bar.returnPressed.connect(self.navigate_to_url)
        self.navbar.addWidget(self.url_bar)

        self.browser.urlChanged.connect(self.update_url)
        
        # tab switcher
        self.tab_switcher = QComboBox()
        self.tab_switcher.currentIndexChanged.connect(self.tabSwitcherProcess)
        self.navbar.addWidget(self.tab_switcher)
        self.tab_switcher.setFixedWidth(250)

        # add new tab to the tab switcher
        self.tab_switcher.addItem("New tab")
        self.tab_switcher.setCurrentIndex(0)

        # new tab button
        new_tab_btn = QAction("[+]", self)
        new_tab_btn.triggered.connect(self.newTabProcess)
        self.navbar.addAction(new_tab_btn)

        # close tab button
        close_tab_btn = QAction("[×]", self)
        close_tab_btn.triggered.connect(self.closeTabProcess)
        self.navbar.addAction(close_tab_btn)

    def navigate_home(self):
        self.browser.setUrl(QUrl('https://lintine.github.io/newtab/'))

    def navigate_to_url(self):
        url = self.url_bar.text()
        self.browser.setUrl(QUrl(url))

    def update_url(self, q):
        self.url_bar.setText(q.toString())

    def tabSwitcherProcess(self):
        self.browser_index = self.tab_switcher.currentIndex()
        # show the correct browser
        self.takeCentralWidget()
        self.setCentralWidget(self.browsers[self.browser_index])
        # set the window title to "Minisurfer Window • " + page title + " • " + url
        self.setWindowTitle("Minisurfer Window • " + self.browser().page().title() + " • " + self.browser().url().toString())

    def newTabProcess(self):
        self.browsers.append(QWebEngineView())
        self.tab_switcher.addItem("New Tab")
        self.tab_switcher.setCurrentIndex(len(self.browsers) - 1)
        self.tabSwitcherProcess()
        # when the page changes, call onPageChangedProcess()
        self.browser().urlChanged.connect(self.onPageChangedProcess)
        # when the browser loads a page, call onPageLoadProcess()
        self.browser().loadFinished.connect(self.onPageLoadProcess)
        # homepage
        try: self.homeProcess()
        except: pass

    def closeTabProcess(self):
                if len(self.browsers) > 1:
                        self.browsers.pop(self.browser_index)
                        self.tab_switcher.removeItem(self.browser_index)
                        if self.browser_index >= len(self.browsers):
                                self.browser_index = len(self.browsers) - 1
                        self.tabSwitcherProcess()


app = QApplication(sys.argv)
QApplication.setApplicationName('Minisurfer')
window = MainWindow()
app.exec_()