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#!/usr/bin/env python3
import sys
import os
import socket
from PyQt5.QtWidgets import (
QApplication, QMainWindow, QVBoxLayout, QPushButton, QLineEdit, QWidget,
QTabWidget, QFileDialog, QMessageBox, QProgressDialog, QHBoxLayout
)
from PyQt5.QtWebEngineWidgets import QWebEngineView, QWebEngineDownloadItem
from PyQt5.QtCore import QUrl
class Browser(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Hemu GenVE Browser")
self.setGeometry(100, 100, 1200, 800)
# ** Tabs Widget **
self.tabs = QTabWidget()
self.tabs.setTabsClosable(True)
self.tabs.tabCloseRequested.connect(self.close_tab)
self.tabs.currentChanged.connect(self.update_url_bar)
self.setCentralWidget(self.tabs)
# ** Top Navigation Bar **
self.nav_bar = QWidget()
layout = QHBoxLayout()
self.url_bar = QLineEdit()
self.url_bar.setPlaceholderText("Search or enter URL...")
self.url_bar.returnPressed.connect(self.load_url)
back_btn = QPushButton("◀")
back_btn.clicked.connect(self.go_back)
forward_btn = QPushButton("▶")
forward_btn.clicked.connect(self.go_forward)
refresh_btn = QPushButton("⟳")
refresh_btn.clicked.connect(self.refresh_page)
self.new_tab_btn = QPushButton("+")
self.new_tab_btn.clicked.connect(lambda: self.create_new_tab("https://www.google.com"))
layout.addWidget(back_btn)
layout.addWidget(forward_btn)
layout.addWidget(refresh_btn)
layout.addWidget(self.url_bar)
layout.addWidget(self.new_tab_btn)
self.nav_bar.setLayout(layout)
self.addToolBarBreak()
self.addToolBar("Navigation").addWidget(self.nav_bar)
# ** Open First Tab **
self.create_new_tab("https://wwwhemeshwebbrowser.w3spaces.com")
def create_new_tab(self, url="https://wwwhemeshwebbrowser.w3spaces.com"):
"""Creates a new tab with a web view."""
if not isinstance(url, str) or not url.strip():
url = "https://wwwhemeshwebbrowser.w3spaces.com" # Default to Hemesh search engine if invalid
web_view = QWebEngineView()
web_view.load(QUrl(url)) # ✅ Fixed issue by ensuring it's always a valid URL
index = self.tabs.addTab(web_view, "New Tab")
self.tabs.setCurrentIndex(index)
web_view.urlChanged.connect(lambda url, idx=index: self.update_tab_title(url, idx))
web_view.page().profile().downloadRequested.connect(self.download_file)
def update_tab_title(self, url, index):
"""Updates tab title when page loads."""
self.tabs.setTabText(index, url.toString())
def update_url_bar(self, index):
"""Updates URL bar when switching tabs."""
if index >= 0:
web_view = self.tabs.widget(index)
if web_view:
self.url_bar.setText(web_view.url().toString())
def load_url(self):
"""Loads URL from search bar or searches Google if not a valid URL."""
url = self.url_bar.text().strip()
if "." not in url or " " in url:
url = f"https://cse.google.com/cse?cx=87f7bb4b355274bcf&q={url.replace(' ', '+')}"
elif not url.startswith("http"):
url = "http://" + url
current_tab = self.tabs.currentWidget()
if current_tab:
current_tab.load(QUrl(url))
def go_back(self):
"""Goes back in the current tab's history."""
current_tab = self.tabs.currentWidget()
if current_tab:
current_tab.back()
def go_forward(self):
"""Goes forward in the current tab's history."""
current_tab = self.tabs.currentWidget()
if current_tab:
current_tab.forward()
def refresh_page(self):
"""Reloads the current page."""
current_tab = self.tabs.currentWidget()
if current_tab:
current_tab.reload()
def close_tab(self, index):
"""Closes a tab safely."""
if self.tabs.count() > 1:
self.tabs.removeTab(index)
else:
self.close()
def download_file(self, download_item: QWebEngineDownloadItem):
"""Handles file downloads with progress dialog."""
default_path = os.path.expanduser("~/Downloads")
if not os.path.exists(default_path):
os.makedirs(default_path)
file_path, _ = QFileDialog.getSaveFileName(self, "Save File", os.path.join(default_path, download_item.suggestedFileName()))
if file_path:
download_item.setDownloadFileName(file_path)
download_item.accept()
self.show_download_progress(download_item, file_path)
def show_download_progress(self, download_item: QWebEngineDownloadItem, file_path):
"""Displays a progress dialog for downloads."""
progress_dialog = QProgressDialog("Downloading file...", "Cancel", 0, 100, self)
progress_dialog.setWindowTitle("Download Progress")
progress_dialog.setAutoClose(True)
progress_dialog.show()
def update_progress(received, total):
if total > 0:
percent = int((received / total) * 100)
progress_dialog.setValue(percent)
if progress_dialog.wasCanceled():
download_item.cancel()
QMessageBox.warning(self, "Download Canceled", f"Download of {file_path} was canceled.")
download_item.downloadProgress.connect(update_progress)
def check_internet(self):
"""Checks internet connectivity."""
try:
socket.create_connection(("8.8.8.8", 53), timeout=2)
return True
except OSError:
return False
if __name__ == "__main__":
app = QApplication(sys.argv)
browser = Browser()
if not browser.check_internet():
QMessageBox.critical(None, "No Internet", "Error: No Internet Connection. Closing in 1 minute.")
sys.exit(app.exec_())
browser.show()
sys.exit(app.exec_())
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