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browser.py
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from aqt import QWebEngineView, QWebEnginePage, QWebEngineProfile, QWebEngineSettings, Qt, QUrl
from aqt.qt import (QWidget, QVBoxLayout, QPushButton, QHBoxLayout, QLineEdit,
QShortcut, QKeySequence, QTabWidget, QTabBar, QEvent)
class TabWidget(QWidget):
def __init__(self, url=None, parent=None, browser=None):
super().__init__(parent)
self.browser = browser
layout = QVBoxLayout(self)
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(3)
nav_layout = QHBoxLayout()
nav_layout.setContentsMargins(5, 5, 5, 0)
self.back_button = QPushButton("←", self)
self.back_button.clicked.connect(self._go_back)
self.back_button.setMaximumWidth(30)
self.back_button.setToolTip("Back (Ctrl+[)")
nav_layout.addWidget(self.back_button)
self.forward_button = QPushButton("→", self)
self.forward_button.clicked.connect(self._go_forward)
self.forward_button.setMaximumWidth(30)
self.forward_button.setToolTip("Forward (Ctrl+])")
nav_layout.addWidget(self.forward_button)
self.reload_button = QPushButton("↻", self)
self.reload_button.clicked.connect(self._reload_page)
self.reload_button.setMaximumWidth(30)
self.reload_button.setToolTip("Reload (Ctrl+R)")
nav_layout.addWidget(self.reload_button)
self.url_edit = QLineEdit(self)
self.url_edit.returnPressed.connect(self._navigate_to_url)
self.url_edit.setCursorPosition(0)
self.url_edit.setAlignment(Qt.AlignmentFlag.AlignLeft)
nav_layout.addWidget(self.url_edit)
self.new_tab_button = QPushButton("+", self)
self.new_tab_button.clicked.connect(lambda: self.browser._add_new_tab() if self.browser else None)
self.new_tab_button.setMaximumWidth(30)
self.new_tab_button.setToolTip("New Tab (Ctrl+T)")
nav_layout.addWidget(self.new_tab_button)
layout.addLayout(nav_layout)
self.profile = QWebEngineProfile("browser_profile")
self.profile.setPersistentCookiesPolicy(
QWebEngineProfile.PersistentCookiesPolicy.ForcePersistentCookies)
settings = self.profile.settings()
settings.setAttribute(QWebEngineSettings.WebAttribute.JavascriptEnabled, True)
settings.setAttribute(QWebEngineSettings.WebAttribute.JavascriptCanAccessClipboard, True)
self.webview = QWebEngineView(self)
self.webpage = QWebEnginePage(self.profile, self.webview)
self.webview.setPage(self.webpage)
self.webview.urlChanged.connect(self._url_changed)
self.webview.loadFinished.connect(self._on_load_finished)
if url:
self.webview.load(QUrl(url))
self.url_edit.setText(url)
else:
self.url_edit.setText("")
layout.addWidget(self.webview)
QShortcut(QKeySequence("Ctrl+["), self).activated.connect(self._go_back)
QShortcut(QKeySequence("Ctrl+]"), self).activated.connect(self._go_forward)
def _go_back(self):
self.webview.back()
def _go_forward(self):
self.webview.forward()
def _navigate_to_url(self):
url = self.url_edit.text().strip()
if any([
url.startswith(('http://', 'https://')),
url.startswith('www.'),
'.' in url and not ' ' in url
]):
if not url.startswith(('http://', 'https://')):
url = 'https://' + url
else:
url = 'https://www.google.com/search?q=' + url.replace(' ', '+')
self.webview.setUrl(QUrl(url))
def _url_changed(self, url):
self.url_edit.setText(url.toString())
self.url_edit.setCursorPosition(0)
if self.parent() and isinstance(self.parent(), QTabWidget):
index = self.parent().indexOf(self)
title = self.webview.title() or "New Tab"
self.parent().setTabText(index, title[:20] + "..." if len(title) > 20 else title)
def _reload_page(self):
self.webview.reload()
def focus_web_content(self):
self.webview.setFocus()
def current_url(self):
return self.webview.url().toString()
def _on_load_finished(self, ok):
if ok:
self.focus_web_content()
class BrowserWidget(QWidget):
def __init__(self, url=None, parent=None):
super().__init__(parent)
self.setFocusPolicy(Qt.FocusPolicy.StrongFocus)
layout = QVBoxLayout(self)
layout.setContentsMargins(0, 0, 0, 0)
self.tabs = QTabWidget()
self.tabs.setTabsClosable(True)
self.tabs.setMovable(True)
self.tabs.setDocumentMode(True)
self.tabs.setElideMode(Qt.TextElideMode.ElideRight)
self.tabs.tabBar().setExpanding(False)
self.tabs.tabCloseRequested.connect(self._close_tab)
layout.addWidget(self.tabs)
QShortcut(QKeySequence("Ctrl+T"), self).activated.connect(lambda: self._add_new_tab())
QShortcut(QKeySequence("Ctrl+L"), self).activated.connect(self._focus_url_current)
QShortcut(QKeySequence("Ctrl+R"), self).activated.connect(self._reload_current)
self._add_new_tab(url)
def keyPressEvent(self, event):
if (event.key() == Qt.Key.Key_W and
(event.modifiers() & (Qt.KeyboardModifier.MetaModifier | Qt.KeyboardModifier.ControlModifier))):
if self.tabs.count() > 1:
self._close_current_tab()
event.accept()
return
super().keyPressEvent(event)
def event(self, event):
if event.type() == QEvent.Type.ShortcutOverride:
if (event.key() == Qt.Key.Key_W and
(event.modifiers() & (Qt.KeyboardModifier.MetaModifier | Qt.KeyboardModifier.ControlModifier))):
event.accept()
return True
return super().event(event)
def _close_tab(self, index):
if self.tabs.count() > 1:
self.tabs.removeTab(index)
else:
self.hide()
def _close_current_tab(self):
self._close_tab(self.tabs.currentIndex())
def _next_tab(self):
curr = self.tabs.currentIndex()
self.tabs.setCurrentIndex((curr + 1) % self.tabs.count())
def _prev_tab(self):
curr = self.tabs.currentIndex()
self.tabs.setCurrentIndex((curr - 1) % self.tabs.count())
def _update_tab_title(self, tab, title):
index = self.tabs.indexOf(tab)
if index >= 0:
self.tabs.setTabText(index, title[:20] + "..." if len(title) > 20 else title)
def _focus_url_current(self):
current_tab = self.tabs.currentWidget()
if current_tab:
current_tab.url_edit.setFocus()
current_tab.url_edit.selectAll()
def _reload_current(self):
current_tab = self.tabs.currentWidget()
if current_tab:
current_tab._reload_page()
def focus_web_content(self):
current_tab = self.tabs.currentWidget()
if current_tab:
current_tab.focus_web_content()
def showEvent(self, event):
super().showEvent(event)
self.focus_web_content()
def _add_new_tab(self, url=None):
new_tab = TabWidget(url, self.tabs, browser=self)
index = self.tabs.addTab(new_tab, "New Tab")
self.tabs.setCurrentIndex(index)
new_tab.webview.titleChanged.connect(lambda title: self._update_tab_title(new_tab, title))
if not url:
new_tab.url_edit.setFocus()
new_tab.url_edit.selectAll()
return new_tab