""" A minimal application using the Qt console-style IPython frontend. This is not a complete console app, as subprocess will not be able to receive input, there is no real readline support, among other limitations. Authors: * Evan Patterson * Min RK * Erik Tollerud * Fernando Perez """ #----------------------------------------------------------------------------- # Imports #----------------------------------------------------------------------------- # stdlib imports import json import os import signal import sys # System library imports from IPython.external.qt import QtGui,QtCore from pygments.styles import get_all_styles # Local imports from IPython.config.application import boolean_flag from IPython.core.application import BaseIPythonApplication from IPython.core.profiledir import ProfileDir from IPython.lib.kernel import tunnel_to_kernel, find_connection_file from IPython.frontend.qt.console.frontend_widget import FrontendWidget from IPython.frontend.qt.console.ipython_widget import IPythonWidget from IPython.frontend.qt.console.rich_ipython_widget import RichIPythonWidget from IPython.frontend.qt.console import styles from IPython.frontend.qt.kernelmanager import QtKernelManager from IPython.utils.path import filefind from IPython.utils.py3compat import str_to_bytes from IPython.utils.traitlets import ( Dict, List, Unicode, Int, CaselessStrEnum, CBool, Any ) from IPython.zmq.ipkernel import ( flags as ipkernel_flags, aliases as ipkernel_aliases, IPKernelApp ) from IPython.zmq.session import Session, default_secure from IPython.zmq.zmqshell import ZMQInteractiveShell import application_rc #----------------------------------------------------------------------------- # Network Constants #----------------------------------------------------------------------------- from IPython.utils.localinterfaces import LOCALHOST, LOCAL_IPS #----------------------------------------------------------------------------- # Globals #----------------------------------------------------------------------------- _examples = """ ipython qtconsole # start the qtconsole ipython qtconsole --pylab=inline # start with pylab in inline plotting mode """ #----------------------------------------------------------------------------- # Classes #----------------------------------------------------------------------------- class MainWindow(QtGui.QMainWindow): #--------------------------------------------------------------------------- # 'object' interface #--------------------------------------------------------------------------- def __init__(self, app, frontend, existing=False, may_close=True, confirm_exit=True): """ Create a MainWindow for the specified FrontendWidget. The app is passed as an argument to allow for different closing behavior depending on whether we are the Kernel's parent. If existing is True, then this Console does not own the Kernel. If may_close is True, then this Console is permitted to close the kernel """ super(MainWindow, self).__init__() self._app = app self.tab_widget = QtGui.QTabWidget(self) self.tab_widget.setDocumentMode(True) self.tab_widget.setTabsClosable(True) self.tab_widget.tabCloseRequested[int].connect(self.close_tab) self.setCentralWidget(self.tab_widget) self.update_tab_bar_visibility() def update_tab_bar_visibility(self): """ update visibility of the tabBar depending of the number of tab 0 or 1 tab, tabBar hidden 2+ tabs, tabBar visible send a self.close if number of tab ==0 need to be called explicitely, or be connected to tabInserted/tabRemoved """ if self.tab_widget.count() <= 1: self.tab_widget.tabBar().setVisible(False) else: self.tab_widget.tabBar().setVisible(True) if self.tab_widget.count()==0 : self.close() @property def active_frontend(self): return self.tab_widget.currentWidget() def close_tab(self,current_tab): """ Called when you need to try to close a tab. It takes the number of the tab to be closed as argument, or a referece to the wiget insite this tab """ # let's be sure "tab" and "closing widget are respectivey the index of the tab to close # and a reference to the trontend to close if type(current_tab) is not int : current_tab = self.tab_widget.indexOf(current_tab) closing_widget=self.tab_widget.widget(current_tab) # when trying to be closed, widget might re-send a request to be closed again, but will # be deleted when event will be processed. So need to check that widget still exist and # skip if not. One example of this is when 'exit' is send in a slave tab. 'exit' will be # re-send by this fonction on the master widget, which ask all slaves widget to exit if closing_widget==None: return #get a list of all wwidget not owning the kernel. slave_tabs=self.findSlavesTabs(closing_widget) keepkernel = None #Use the prompt by default if hasattr(closing_widget,'_keep_kernel_on_exit'): #set by exit magic keepkernel = closing_widget._keep_kernel_on_exit # If signal sent by exist magic (_keep_kernel_on_exit, exist and not None) # we set local slave tabs._hidden to True to avoit prompting for kernel # restart when they litt get the signal. and the "forward" the 'exit' # to the main win if keepkernel is not None: for tab in slave_tabs: tab._hidden = True if closing_widget in slave_tabs : try : self.find_master_tab(closing_widget).execute('exit') except AttributeError: self.log.info("Master already closed or not local, closing only current tab") self.tab_widget.removeTab(current_tab) return kernel_manager = closing_widget.kernel_manager if keepkernel is None and not closing_widget._confirm_exit: # don't prompt, just terminate the kernel if we own it # or leave it alone if we don't keepkernel = not closing_widget._existing if keepkernel is None: #show prompt if kernel_manager and kernel_manager.channels_running: title = self.window().windowTitle() cancel = QtGui.QMessageBox.Cancel okay = QtGui.QMessageBox.Ok if closing_widget._may_close: msg = "You are closing the tab : "+'"'+self.tab_widget.tabText(current_tab)+'"' info = "Would you like to quit the Kernel and all attached Consoles as well?" justthis = QtGui.QPushButton("&No, just this Console", self) justthis.setShortcut('N') closeall = QtGui.QPushButton("&Yes, quit everything", self) closeall.setShortcut('Y') box = QtGui.QMessageBox(QtGui.QMessageBox.Question, title, msg) box.setInformativeText(info) box.addButton(cancel) box.addButton(justthis, QtGui.QMessageBox.NoRole) box.addButton(closeall, QtGui.QMessageBox.YesRole) box.setDefaultButton(closeall) box.setEscapeButton(cancel) pixmap = QtGui.QPixmap(':/icon/IPythonConsole.png') scaledpixmap = pixmap.scaledToWidth(64,mode=QtCore.Qt.SmoothTransformation) box.setIconPixmap(scaledpixmap) reply = box.exec_() if reply == 1: # close All for slave in slave_tabs: self.tab_widget.removeTab(self.tab_widget.indexOf(slave)) closing_widget.execute("exit") self.tab_widget.removeTab(current_tab) elif reply == 0: # close Console if not closing_widget._existing: # Have kernel: don't quit, just close the window self._app.setQuitOnLastWindowClosed(False) closing_widget.execute("exit True") else: reply = QtGui.QMessageBox.question(self, title, "Are you sure you want to close this Console?"+ "\nThe Kernel and other Consoles will remain active.", okay|cancel, defaultButton=okay ) if reply == okay: self.tab_widget.removeTab(current_tab) elif keepkernel: #close console but leave kernel running (no prompt) if kernel_manager and kernel_manager.channels_running: if not closing_widget._existing: # I have the kernel: don't quit, just close the window self.tab_widget.removeTab(current_tab) else: #close console and kernel (no prompt) if kernel_manager and kernel_manager.channels_running: for slave in slave_tabs: self.tab_widget.removeTab(self.tab_widget.indexOf(slave)) self.tab_widget.removeTab(current_tab) kernel_manager.shutdown_kernel() self.update_tab_bar_visibility() def add_tab_with_frontend(self,frontend,name=None): """ insert a tab with a given frontend in the tab bar, and give it a name """ if not name: name=str('kernel '+str(self.tab_widget.count())) self.tab_widget.addTab(frontend,name) self.update_tab_bar_visibility() self.make_frontend_visible(frontend) frontend.exit_requested.connect(self.close_tab) def next_tab(self): self.tab_widget.setCurrentIndex((self.tab_widget.currentIndex()+1)) def prev_tab(self): self.tab_widget.setCurrentIndex((self.tab_widget.currentIndex()-1)) def make_frontend_visible(self,frontend): widgetIndex=self.tab_widget.indexOf(frontend) if widgetIndex > 0 : self.tab_widget.setCurrentIndex(widgetIndex) def find_master_tab(self,tab,asList=False): """ Try to return the frontend that own the kernel attached to the given widget/tab. Only find frontend owed by the current application. Selection based on port of the kernel, might be inacurate if several kernel on different ip use same port number. This fonction does the conversion tabNumber/widget if needed. Might return None if no master widget (non local kernel) Will crash IPython if more than 1 masterWidget When asList set to True, always return a list of widget(s) owning the kernel. The list might be empty or containing several Widget. """ #convert from/to int/richIpythonWidget if needed if type(tab) == int: tab = self.tab_widget.widget(tab) km=tab.kernel_manager; #build list of all widgets widgetList = [self.tab_widget.widget(i) for i in range(self.tab_widget.count())] # widget that are candidate to be the owner of the kernel does have all the same port of the curent widget # And should have a _may_close attribute filtredwidgetList = [ widget for widget in widgetList if widget.kernel_manager.shell_address == km.shell_address and widget.kernel_manager.sub_address == km.sub_address and widget.kernel_manager.stdin_address == km.stdin_address and widget.kernel_manager.hb_address == km.hb_address and hasattr(widget,'_may_close') ] # the master widget is the one that may close the kernel masterWidget= [ widget for widget in filtredwidgetList if widget._may_close] if asList: return masterWidget assert(len(masterWidget)<=1 ) if len(masterWidget)==0: return None return masterWidget[0] def findSlavesTabs(self,tab): """ Try to return all the frontend that do not own the kernel attached to the given widget/tab. Only find frontend owed by the current application. Selection based on port of the kernel, might be innacurate if several kernel on different ip use same port number. This fonction does the conversion tabNumber/widget if needed. """ #convert from/to int/richIpythonWidget if needed if type(tab) == int: tab = self.tab_widget.widget(tab) km=tab.kernel_manager; #build list of all widgets widgetList = [self.tab_widget.widget(i) for i in range(self.tab_widget.count())] # widget that are candidate not to be the owner of the kernel does have all the same port of the curent widget filtredWidgetList = ( widget for widget in widgetList if widget.kernel_manager.shell_address == km.shell_address and widget.kernel_manager.sub_address == km.sub_address and widget.kernel_manager.stdin_address == km.stdin_address and widget.kernel_manager.hb_address == km.hb_address) # Get a list of all widget owning the same kernel and removed it from # the previous cadidate. (better using sets ?) masterWidgetlist = self.find_master_tab(tab,asList=True) slaveList = [widget for widget in filtredWidgetList if widget not in masterWidgetlist] return slaveList # MenuBar is always present on Mac Os, so let's populate it with possible # action, don't do it on other platform as some user might not want the # menu bar, or give them an option to remove it def initMenuBar(self): #create menu in the order they should appear in the menu bar self.fileMenu = self.menuBar().addMenu("&File") self.editMenu = self.menuBar().addMenu("&Edit") self.fontMenu = self.menuBar().addMenu("F&ont") self.windowMenu = self.menuBar().addMenu("&Window") self.magicMenu = self.menuBar().addMenu("&Magic") # please keep the Help menu in Mac Os even if empty. It will # automatically contain a search field to search inside menus and # please keep it spelled in English, as long as Qt Doesn't support # a QAction.MenuRole like HelpMenuRole otherwise it will loose # this search field fonctionnality self.helpMenu = self.menuBar().addMenu("&Help") # sould wrap every line of the following block into a try/except, # as we are not sure of instanciating a _frontend which support all # theses actions, but there might be a better way try: self.print_action = QtGui.QAction("&Print", self, shortcut="Ctrl+P", triggered=self.print_action_active_frontend) self.fileMenu.addAction(self.print_action) except AttributeError: self.log.error("trying to add unexisting action (print), skipping") try: self.export_action=QtGui.QAction("E&xport", self, shortcut="Ctrl+S", triggered=self.export_action_active_frontend ) self.fileMenu.addAction(self.export_action) except AttributeError: self.log.error("trying to add unexisting action (Export), skipping") try: self.select_all_action = QtGui.QAction("Select &All", self, shortcut="Ctrl+A", triggered=self.select_all_active_frontend ) self.fileMenu.addAction(self.select_all_action) except AttributeError: self.log.error("trying to add unexisting action (select all), skipping") try: self.undo_action = QtGui.QAction("&Undo", self, shortcut="Ctrl+Z", statusTip="Undo last action if possible", triggered=self.undo_active_frontend ) self.editMenu.addAction(self.undo_action) except AttributeError: self.log.error("trying to add unexisting action (undo), skipping") try: self.redo_action = QtGui.QAction("&Redo", self, shortcut="Ctrl+Shift+Z", statusTip="Redo last action if possible", triggered=self.redo_active_frontend) self.editMenu.addAction(self.redo_action) except AttributeError: self.log.error("trying to add unexisting action (redo), skipping") try: self.increase_font_size = QtGui.QAction("&Increase Font Size", self, shortcut="Ctrl++", triggered=self.increase_font_size_active_frontend ) self.fontMenu.addAction(self.increase_font_size) except AttributeError: self.log.error("trying to add unexisting action (increase font size), skipping") try: self.decrease_font_size = QtGui.QAction("&Decrease Font Size", self, shortcut="Ctrl+-", triggered=self.decrease_font_size_active_frontend ) self.fontMenu.addAction(self.decrease_font_size) except AttributeError: self.log.error("trying to add unexisting action (decrease font size), skipping") try: self.reset_font_size = QtGui.QAction("&Reset Font Size", self, shortcut="Ctrl+0", triggered=self.reset_font_size_active_frontend ) self.fontMenu.addAction(self.reset_font_size) except AttributeError: self.log.error("trying to add unexisting action (reset font size), skipping") try: self.reset_action = QtGui.QAction("&Reset", self, statusTip="Clear all varible from workspace", triggered=self.reset_magic_active_frontend) self.magicMenu.addAction(self.reset_action) except AttributeError: self.log.error("trying to add unexisting action (reset), skipping") try: self.history_action = QtGui.QAction("&History", self, statusTip="show command history", triggered=self.history_magic_active_frontend) self.magicMenu.addAction(self.history_action) except AttributeError: self.log.error("trying to add unexisting action (history), skipping") try: self.save_action = QtGui.QAction("E&xport History ", self, statusTip="Export History as Python File", triggered=self.save_magic_active_frontend) self.magicMenu.addAction(self.save_action) except AttributeError: self.log.error("trying to add unexisting action (save), skipping") try: self.clear_action = QtGui.QAction("&Clear", self, statusTip="Clear the console", triggered=self.clear_magic_active_frontend) self.magicMenu.addAction(self.clear_action) except AttributeError: self.log.error("trying to add unexisting action, skipping") try: self.who_action = QtGui.QAction("&Who", self, statusTip="List interactive variable", triggered=self.who_magic_active_frontend) self.magicMenu.addAction(self.who_action) except AttributeError: self.log.error("trying to add unexisting action (who), skipping") try: self.who_ls_action = QtGui.QAction("Wh&o ls", self, statusTip="Return a list of interactive variable", triggered=self.who_ls_magic_active_frontend) self.magicMenu.addAction(self.who_ls_action) except AttributeError: self.log.error("trying to add unexisting action (who_ls), skipping") try: self.whos_action = QtGui.QAction("Who&s", self, statusTip="List interactive variable with detail", triggered=self.whos_magic_active_frontend) self.magicMenu.addAction(self.whos_action) except AttributeError: self.log.error("trying to add unexisting action (whos), skipping") def undo_active_frontend(self): self.active_frontend.undo() def redo_active_frontend(self): self.active_frontend.redo() def reset_magic_active_frontend(self): self.active_frontend.execute("%reset") def history_magic_active_frontend(self): self.active_frontend.history_magic() def save_magic_active_frontend(self): self.active_frontend.save_magic() def clear_magic_active_frontend(self): self.active_frontend.execute("%clear") def who_magic_active_frontend(self): self.active_frontend.execute("%who") def who_ls_magic_active_frontend(self): self.active_frontend.execute("%who_ls") def whos_magic_active_frontend(self): self.active_frontend.execute("%whos") def print_action_active_frontend(self): self.active_frontend.print_action.trigger() def export_action_active_frontend(self): self.active_frontend.export_action.trigger() def select_all_active_frontend(self): self.active_frontend.select_all_action.trigger() def increase_font_size_active_frontend(self): self.active_frontend.increase_font_size.trigger() def decrease_font_size_active_frontend(self): self.active_frontend.decrease_font_size.trigger() def reset_font_size_active_frontend(self): self.active_frontend.reset_font_size.trigger() #--------------------------------------------------------------------------- # QWidget interface #--------------------------------------------------------------------------- def closeEvent(self, event): """ Forward the close event to every tabs contained by the windows """ # Do Not loop on the widget count as it change while closing widgetList=[ self.tab_widget.widget(i) for i in range(self.tab_widget.count())] for widget in widgetList: self.close_tab(widget) event.accept() #----------------------------------------------------------------------------- # Aliases and Flags #----------------------------------------------------------------------------- flags = dict(ipkernel_flags) qt_flags = { 'existing' : ({'IPythonQtConsoleApp' : {'existing' : 'kernel*.json'}}, "Connect to an existing kernel. If no argument specified, guess most recent"), 'pure' : ({'IPythonQtConsoleApp' : {'pure' : True}}, "Use a pure Python kernel instead of an IPython kernel."), 'plain' : ({'ConsoleWidget' : {'kind' : 'plain'}}, "Disable rich text support."), } qt_flags.update(boolean_flag( 'gui-completion', 'ConsoleWidget.gui_completion', "use a GUI widget for tab completion", "use plaintext output for completion" )) qt_flags.update(boolean_flag( 'confirm-exit', 'IPythonQtConsoleApp.confirm_exit', """Set to display confirmation dialog on exit. You can always use 'exit' or 'quit', to force a direct exit without any confirmation. """, """Don't prompt the user when exiting. This will terminate the kernel if it is owned by the frontend, and leave it alive if it is external. """ )) flags.update(qt_flags) aliases = dict(ipkernel_aliases) qt_aliases = dict( hb = 'IPythonQtConsoleApp.hb_port', shell = 'IPythonQtConsoleApp.shell_port', iopub = 'IPythonQtConsoleApp.iopub_port', stdin = 'IPythonQtConsoleApp.stdin_port', ip = 'IPythonQtConsoleApp.ip', existing = 'IPythonQtConsoleApp.existing', f = 'IPythonQtConsoleApp.connection_file', style = 'IPythonWidget.syntax_style', stylesheet = 'IPythonQtConsoleApp.stylesheet', colors = 'ZMQInteractiveShell.colors', editor = 'IPythonWidget.editor', paging = 'ConsoleWidget.paging', ssh = 'IPythonQtConsoleApp.sshserver', ) aliases.update(qt_aliases) #----------------------------------------------------------------------------- # IPythonQtConsole #----------------------------------------------------------------------------- class IPythonQtConsoleApp(BaseIPythonApplication): name = 'ipython-qtconsole' default_config_file_name='ipython_config.py' description = """ The IPython QtConsole. This launches a Console-style application using Qt. It is not a full console, in that launched terminal subprocesses will not be able to accept input. The QtConsole supports various extra features beyond the Terminal IPython shell, such as inline plotting with matplotlib, via: ipython qtconsole --pylab=inline as well as saving your session as HTML, and printing the output. """ examples = _examples classes = [IPKernelApp, IPythonWidget, ZMQInteractiveShell, ProfileDir, Session] flags = Dict(flags) aliases = Dict(aliases) kernel_argv = List(Unicode) # create requested profiles by default, if they don't exist: auto_create = CBool(True) # connection info: ip = Unicode(LOCALHOST, config=True, help="""Set the kernel\'s IP address [default localhost]. If the IP address is something other than localhost, then Consoles on other machines will be able to connect to the Kernel, so be careful!""" ) sshserver = Unicode('', config=True, help="""The SSH server to use to connect to the kernel.""") sshkey = Unicode('', config=True, help="""Path to the ssh key to use for logging in to the ssh server.""") hb_port = Int(0, config=True, help="set the heartbeat port [default: random]") shell_port = Int(0, config=True, help="set the shell (XREP) port [default: random]") iopub_port = Int(0, config=True, help="set the iopub (PUB) port [default: random]") stdin_port = Int(0, config=True, help="set the stdin (XREQ) port [default: random]") connection_file = Unicode('', config=True, help="""JSON file in which to store connection info [default: kernel-.json] This file will contain the IP, ports, and authentication key needed to connect clients to this kernel. By default, this file will be created in the security-dir of the current profile, but can be specified by absolute path. """) def _connection_file_default(self): return 'kernel-%i.json' % os.getpid() existing = Unicode('', config=True, help="""Connect to an already running kernel""") stylesheet = Unicode('', config=True, help="path to a custom CSS stylesheet") pure = CBool(False, config=True, help="Use a pure Python kernel instead of an IPython kernel.") plain = CBool(False, config=True, help="Use a plaintext widget instead of rich text (plain can't print/save).") def _pure_changed(self, name, old, new): kind = 'plain' if self.plain else 'rich' self.config.ConsoleWidget.kind = kind if self.pure: self.widget_factory = FrontendWidget elif self.plain: self.widget_factory = IPythonWidget else: self.widget_factory = RichIPythonWidget _plain_changed = _pure_changed confirm_exit = CBool(True, config=True, help=""" Set to display confirmation dialog on exit. You can always use 'exit' or 'quit', to force a direct exit without any confirmation.""", ) # the factory for creating a widget widget_factory = Any(RichIPythonWidget) def parse_command_line(self, argv=None): super(IPythonQtConsoleApp, self).parse_command_line(argv) if argv is None: argv = sys.argv[1:] self.kernel_argv = list(argv) # copy # kernel should inherit default config file from frontend self.kernel_argv.append("--KernelApp.parent_appname='%s'"%self.name) # Scrub frontend-specific flags for a in argv: if a.startswith('-') and a.lstrip('-') in qt_flags: self.kernel_argv.remove(a) swallow_next = False for a in argv: if swallow_next: self.kernel_argv.remove(a) swallow_next = False continue if a.startswith('-'): split = a.lstrip('-').split('=') alias = split[0] if alias in qt_aliases: self.kernel_argv.remove(a) if len(split) == 1: # alias passed with arg via space swallow_next = True def init_connection_file(self): """find the connection file, and load the info if found. The current working directory and the current profile's security directory will be searched for the file if it is not given by absolute path. When attempting to connect to an existing kernel and the `--existing` argument does not match an existing file, it will be interpreted as a fileglob, and the matching file in the current profile's security dir with the latest access time will be used. """ if self.existing: try: cf = find_connection_file(self.existing) except Exception: self.log.critical("Could not find existing kernel connection file %s", self.existing) self.exit(1) self.log.info("Connecting to existing kernel: %s" % cf) self.connection_file = cf # should load_connection_file only be used for existing? # as it is now, this allows reusing ports if an existing # file is requested try: self.load_connection_file() except Exception: self.log.error("Failed to load connection file: %r", self.connection_file, exc_info=True) self.exit(1) def load_connection_file(self): """load ip/port/hmac config from JSON connection file""" # this is identical to KernelApp.load_connection_file # perhaps it can be centralized somewhere? try: fname = filefind(self.connection_file, ['.', self.profile_dir.security_dir]) except IOError: self.log.debug("Connection File not found: %s", self.connection_file) return self.log.debug(u"Loading connection file %s", fname) with open(fname) as f: s = f.read() cfg = json.loads(s) if self.ip == LOCALHOST and 'ip' in cfg: # not overridden by config or cl_args self.ip = cfg['ip'] for channel in ('hb', 'shell', 'iopub', 'stdin'): name = channel + '_port' if getattr(self, name) == 0 and name in cfg: # not overridden by config or cl_args setattr(self, name, cfg[name]) if 'key' in cfg: self.config.Session.key = str_to_bytes(cfg['key']) def init_ssh(self): """set up ssh tunnels, if needed.""" if not self.sshserver and not self.sshkey: return if self.sshkey and not self.sshserver: # specifying just the key implies that we are connecting directly self.sshserver = self.ip self.ip = LOCALHOST # build connection dict for tunnels: info = dict(ip=self.ip, shell_port=self.shell_port, iopub_port=self.iopub_port, stdin_port=self.stdin_port, hb_port=self.hb_port ) self.log.info("Forwarding connections to %s via %s"%(self.ip, self.sshserver)) # tunnels return a new set of ports, which will be on localhost: self.ip = LOCALHOST try: newports = tunnel_to_kernel(info, self.sshserver, self.sshkey) except: # even catch KeyboardInterrupt self.log.error("Could not setup tunnels", exc_info=True) self.exit(1) self.shell_port, self.iopub_port, self.stdin_port, self.hb_port = newports cf = self.connection_file base,ext = os.path.splitext(cf) base = os.path.basename(base) self.connection_file = os.path.basename(base)+'-ssh'+ext self.log.critical("To connect another client via this tunnel, use:") self.log.critical("--existing %s" % self.connection_file) def init_kernel_manager(self): # Don't let Qt or ZMQ swallow KeyboardInterupts. signal.signal(signal.SIGINT, signal.SIG_DFL) sec = self.profile_dir.security_dir try: cf = filefind(self.connection_file, ['.', sec]) except IOError: # file might not exist if self.connection_file == os.path.basename(self.connection_file): # just shortname, put it in security dir cf = os.path.join(sec, self.connection_file) else: cf = self.connection_file # Create a KernelManager and start a kernel. self.kernel_manager = QtKernelManager( ip=self.ip, shell_port=self.shell_port, iopub_port=self.iopub_port, stdin_port=self.stdin_port, hb_port=self.hb_port, connection_file=cf, config=self.config, ) # start the kernel if not self.existing: kwargs = dict(ipython=not self.pure) kwargs['extra_arguments'] = self.kernel_argv self.kernel_manager.start_kernel(**kwargs) elif self.sshserver: # ssh, write new connection file self.kernel_manager.write_connection_file() self.kernel_manager.start_channels() def create_tab_with_new_frontend(self): """ Create new tab attached to new kernel, launched on localhost. """ kernel_manager = QtKernelManager( shell_address=(LOCALHOST,0 ), sub_address=(LOCALHOST, 0), stdin_address=(LOCALHOST, 0), hb_address=(LOCALHOST, 0), config=self.config ) # start the kernel kwargs = dict(ip=LOCALHOST, ipython=not self.pure) kwargs['extra_arguments'] = self.kernel_argv kernel_manager.start_kernel(**kwargs) kernel_manager.start_channels() local_kernel = (not False) or self.ip in LOCAL_IPS widget = self.widget_factory(config=self.config, local_kernel=local_kernel) widget.kernel_manager = kernel_manager widget._existing=False; widget._confirm_exit=True; widget._may_close=True; self.window.add_tab_with_frontend(widget) def create_tab_attached_to_current_tab_kernel(self): currentWidget = self.window.tab_widget.currentWidget() currentWidgetIndex = self.window.tab_widget.indexOf(currentWidget) currentWidget.kernel_manager = currentWidget.kernel_manager; currentWidgetName = self.window.tab_widget.tabText(currentWidgetIndex); kernel_manager = QtKernelManager( shell_address = currentWidget.kernel_manager.shell_address, sub_address = currentWidget.kernel_manager.sub_address, stdin_address = currentWidget.kernel_manager.stdin_address, hb_address = currentWidget.kernel_manager.hb_address, config = self.config ) kernel_manager.start_channels() local_kernel = (not self.existing) or self.ip in LOCAL_IPS widget = self.widget_factory(config=self.config, local_kernel=False) widget._confirm_exit=True; widget._may_close=False; widget.kernel_manager = kernel_manager self.window.add_tab_with_frontend(widget,name=str('('+currentWidgetName+') slave')) def init_qt_elements(self): # Create the widget. self.app = QtGui.QApplication([]) pixmap=QtGui.QPixmap(':/icon/IPythonConsole.png') icon=QtGui.QIcon(pixmap) QtGui.QApplication.setWindowIcon(icon) local_kernel = (not self.existing) or self.ip in LOCAL_IPS self.widget = self.widget_factory(config=self.config, local_kernel=local_kernel) self.widget._existing = self.existing; self.widget._may_close = not self.existing; self.widget._confirm_exit = not self.existing; self.widget.kernel_manager = self.kernel_manager self.window = MainWindow(self.app, self.widget, self.existing, may_close=local_kernel, confirm_exit=self.confirm_exit) self.window.log = self.log self.window.add_tab_with_frontend(self.widget) self.window.initMenuBar() self.window.setWindowTitle('Python' if self.pure else 'IPython') def init_colors(self): """Configure the coloring of the widget""" # Note: This will be dramatically simplified when colors # are removed from the backend. if self.pure: # only IPythonWidget supports styling return # parse the colors arg down to current known labels try: colors = self.config.ZMQInteractiveShell.colors except AttributeError: colors = None try: style = self.config.IPythonWidget.colors except AttributeError: style = None # find the value for colors: if colors: colors=colors.lower() if colors in ('lightbg', 'light'): colors='lightbg' elif colors in ('dark', 'linux'): colors='linux' else: colors='nocolor' elif style: if style=='bw': colors='nocolor' elif styles.dark_style(style): colors='linux' else: colors='lightbg' else: colors=None # Configure the style. widget = self.widget if style: widget.style_sheet = styles.sheet_from_template(style, colors) widget.syntax_style = style widget._syntax_style_changed() widget._style_sheet_changed() elif colors: # use a default style widget.set_default_style(colors=colors) else: # this is redundant for now, but allows the widget's # defaults to change widget.set_default_style() if self.stylesheet: # we got an expicit stylesheet if os.path.isfile(self.stylesheet): with open(self.stylesheet) as f: sheet = f.read() widget.style_sheet = sheet widget._style_sheet_changed() else: raise IOError("Stylesheet %r not found."%self.stylesheet) def initialize(self, argv=None): super(IPythonQtConsoleApp, self).initialize(argv) self.init_connection_file() default_secure(self.config) self.init_ssh() self.init_kernel_manager() self.init_qt_elements() self.init_colors() self.init_window_shortcut() def init_window_shortcut(self): self.prev_tab_act = QtGui.QAction("Pre&vious Tab", self.window, shortcut="Ctrl+PgDown", statusTip="Cahange to next tab", triggered=self.window.prev_tab) self.next_tab_act = QtGui.QAction("Ne&xt Tab", self.window, shortcut="Ctrl+PgUp", statusTip="Cahange to next tab", triggered=self.window.next_tab) self.fullScreenAct = QtGui.QAction("&Full Screen", self.window, shortcut="Ctrl+Meta+Space", statusTip="Toggle between Fullscreen and Normal Size", triggered=self.toggleFullScreen) self.tabAndNewKernelAct =QtGui.QAction("Tab with &New kernel", self.window, shortcut="Ctrl+T", triggered=self.create_tab_with_new_frontend) self.window.windowMenu.addAction(self.tabAndNewKernelAct) self.tabSameKernalAct =QtGui.QAction("Tab with Sa&me kernel", self.window, shortcut="Ctrl+Shift+T", triggered=self.create_tab_attached_to_current_tab_kernel) self.window.windowMenu.addAction(self.tabSameKernalAct) self.window.windowMenu.addSeparator() # creating shortcut in menubar only for Mac OS as I don't # know the shortcut or if the windows manager assign it in # other platform. if sys.platform == 'darwin': self.minimizeAct = QtGui.QAction("Mini&mize", self.window, shortcut="Ctrl+m", statusTip="Minimize the window/Restore Normal Size", triggered=self.toggleMinimized) self.maximizeAct = QtGui.QAction("Ma&ximize", self.window, shortcut="Ctrl+Shift+M", statusTip="Maximize the window/Restore Normal Size", triggered=self.toggleMaximized) self.onlineHelpAct = QtGui.QAction("Open Online &Help", self.window, triggered=self._open_online_help) self.windowMenu = self.window.windowMenu self.windowMenu.addAction(self.next_tab_act) self.windowMenu.addAction(self.prev_tab_act) self.windowMenu.addSeparator() self.windowMenu.addAction(self.minimizeAct) self.windowMenu.addAction(self.maximizeAct) self.windowMenu.addSeparator() self.windowMenu.addAction(self.fullScreenAct) self.window.helpMenu.addAction(self.onlineHelpAct) else: # if we don't put it in a menu, we add it to the window so # that it can still be triggerd by shortcut self.window.addAction(self.fullScreenAct) def toggleMinimized(self): if not self.window.isMinimized(): self.window.showMinimized() else: self.window.showNormal() def _open_online_help(self): QtGui.QDesktopServices.openUrl( QtCore.QUrl("http://ipython.org/documentation.html", QtCore.QUrl.TolerantMode) ) def toggleMaximized(self): if not self.window.isMaximized(): self.window.showMaximized() else: self.window.showNormal() # Min/Max imizing while in full screen give a bug # when going out of full screen, at least on OSX def toggleFullScreen(self): if not self.window.isFullScreen(): self.window.showFullScreen() if sys.platform == 'darwin': self.maximizeAct.setEnabled(False) self.minimizeAct.setEnabled(False) else: self.window.showNormal() if sys.platform == 'darwin': self.maximizeAct.setEnabled(True) self.minimizeAct.setEnabled(True) def start(self): # draw the window self.window.show() # Start the application main loop. self.app.exec_() #----------------------------------------------------------------------------- # Main entry point #----------------------------------------------------------------------------- def main(): app = IPythonQtConsoleApp() app.initialize() app.start() if __name__ == '__main__': main()