# -*- coding: utf-8 -*- """ OnionShare | https://onionshare.org/ Copyright (C) 2014-2018 Micah Lee This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . """ from PyQt5 import QtCore, QtWidgets, QtGui from watchdog.observers import Observer from onionshare import strings from onionshare.mode_settings import ModeSettings from .tab import Tab from .event_handler import EventHandler class TabWidget(QtWidgets.QTabWidget): """ A custom tab widget, that has a "+" button for adding new tabs """ bring_to_front = QtCore.pyqtSignal() def __init__(self, common, system_tray, status_bar): super(TabWidget, self).__init__() self.common = common self.common.log("TabWidget", "__init__") self.system_tray = system_tray self.status_bar = status_bar # Keep track of tabs in a dictionary self.tabs = {} self.current_tab_id = 0 # Each tab has a unique id # Define the new tab button self.new_tab_button = QtWidgets.QPushButton("+", parent=self) self.new_tab_button.setFlat(True) self.new_tab_button.setAutoFillBackground(True) self.new_tab_button.setFixedSize(30, 30) self.new_tab_button.clicked.connect(self.new_tab_clicked) self.new_tab_button.setStyleSheet( self.common.gui.css["tab_widget_new_tab_button"] ) self.new_tab_button.setToolTip(strings._("gui_new_tab_tooltip")) # Use a custom tab bar tab_bar = TabBar() tab_bar.move_new_tab_button.connect(self.move_new_tab_button) tab_bar.currentChanged.connect(self.tab_changed) self.setTabBar(tab_bar) # Set up the tab widget self.setMovable(True) self.setTabsClosable(True) self.setUsesScrollButtons(True) self.tabCloseRequested.connect(self.close_tab) self.move_new_tab_button() # Watch the events file for changes self.event_handler = EventHandler(common) self.event_handler.new_tab.connect(self.add_tab) self.event_handler.new_share_tab.connect(self.new_share_tab) self.observer = Observer() self.observer.schedule(self.event_handler, self.common.gui.events_dir) self.observer.start() def cleanup(self): # Stop the event thread self.observer.stop() self.observer.join() # Clean up each tab for index in range(self.count()): tab = self.widget(index) tab.cleanup() def move_new_tab_button(self): # Find the width of all tabs tabs_width = sum( [self.tabBar().tabRect(i).width() for i in range(self.count())] ) # The current position of the new tab button pos = self.new_tab_button.pos() # If there are so many tabs it scrolls, move the button to the left of the scroll buttons if tabs_width > self.width(): pos.setX(self.width() - 61) else: # Otherwise move the button to the right of the tabs pos.setX(self.tabBar().sizeHint().width()) self.new_tab_button.move(pos) self.new_tab_button.raise_() def tab_changed(self): # Active tab was changed tab_id = self.currentIndex() self.common.log("TabWidget", "tab_changed", f"Tab was changed to {tab_id}") try: mode = self.tabs[tab_id].get_mode() if mode: # Update the server status indicator to reflect that of the current tab self.tabs[tab_id].update_server_status_indicator() else: # If this tab doesn't have a mode set yet, blank the server status indicator self.status_bar.server_status_image_label.clear() self.status_bar.server_status_label.clear() except KeyError: # When all current tabs are closed, index briefly drops to -1 before resetting to 0 # which will otherwise trigger a KeyError on tab.get_mode() above. pass def new_tab_clicked(self): # Create a new tab self.add_tab() def load_tab(self, mode_settings_id): # Load the tab's mode settings mode_settings = ModeSettings(self.common, id=mode_settings_id) self.add_tab(mode_settings) def new_share_tab(self, filenames): mode_settings = ModeSettings(self.common) mode_settings.set("persistent", "mode", "share") mode_settings.set("share", "filenames", filenames) self.add_tab(mode_settings) def add_tab(self, mode_settings=None): tab = Tab(self.common, self.current_tab_id, self.system_tray, self.status_bar) tab.change_title.connect(self.change_title) tab.change_icon.connect(self.change_icon) tab.change_persistent.connect(self.change_persistent) self.tabs[self.current_tab_id] = tab self.current_tab_id += 1 index = self.addTab(tab, strings._("gui_new_tab")) self.setCurrentIndex(index) tab.init(mode_settings) # If it's persistent, set the persistent image in the tab self.change_persistent(tab.tab_id, tab.settings.get("persistent", "enabled")) # Bring the window to front, in case this is being added by an event self.bring_to_front.emit() def change_title(self, tab_id, title): index = self.indexOf(self.tabs[tab_id]) self.setTabText(index, title) def change_icon(self, tab_id, icon_path): index = self.indexOf(self.tabs[tab_id]) self.setTabIcon(index, QtGui.QIcon(self.common.get_resource_path(icon_path))) def change_persistent(self, tab_id, is_persistent): index = self.indexOf(self.tabs[tab_id]) if is_persistent: self.tabBar().setTabButton( index, QtWidgets.QTabBar.LeftSide, self.tabs[tab_id].persistent_image_label, ) else: invisible_widget = QtWidgets.QWidget() invisible_widget.setFixedSize(0, 0) self.tabBar().setTabButton( index, QtWidgets.QTabBar.LeftSide, invisible_widget ) self.save_persistent_tabs() def save_persistent_tabs(self): # Figure out the order of persistent tabs to save in settings persistent_tabs = [] for index in range(self.count()): tab = self.widget(index) if tab.settings.get("persistent", "enabled"): persistent_tabs.append(tab.settings.id) # Only save if tabs have actually moved if persistent_tabs != self.common.settings.get("persistent_tabs"): self.common.settings.set("persistent_tabs", persistent_tabs) self.common.settings.save() def close_tab(self, index): self.common.log("TabWidget", "close_tab", f"{index}") tab = self.widget(index) if tab.close_tab(): # If the tab is persistent, delete the settings file from disk if tab.settings.get("persistent", "enabled"): tab.settings.delete() # Remove the tab self.removeTab(index) del self.tabs[tab.tab_id] # If the last tab is closed, open a new one if self.count() == 0: self.new_tab_clicked() self.save_persistent_tabs() def are_tabs_active(self): """ See if there are active servers in any open tabs """ for tab_id in self.tabs: mode = self.tabs[tab_id].get_mode() if mode: if mode.server_status.status != mode.server_status.STATUS_STOPPED: return True return False def paintEvent(self, event): super(TabWidget, self).paintEvent(event) # Save the order of persistent tabs whenever a new tab is switched to -- ideally we would # do this whenever tabs gets moved, but paintEvent is the only event that seems to get triggered # when this happens self.save_persistent_tabs() def resizeEvent(self, event): # Make sure to move new tab button on each resize super(TabWidget, self).resizeEvent(event) self.move_new_tab_button() class TabBar(QtWidgets.QTabBar): """ A custom tab bar """ move_new_tab_button = QtCore.pyqtSignal() def __init__(self): super(TabBar, self).__init__() def tabLayoutChange(self): self.move_new_tab_button.emit()