|
|
""" A minimal application using the Qt console-style IPython frontend.
|
|
|
"""
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
# Systemm library imports
|
|
|
from PyQt4 import QtGui
|
|
|
from pygments.styles import get_all_styles
|
|
|
# Local imports
|
|
|
from IPython.external.argparse import ArgumentParser
|
|
|
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
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Network Constants
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
from IPython.utils.localinterfaces import LOCALHOST, LOCAL_IPS
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Classes
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class MainWindow(QtGui.QMainWindow):
|
|
|
|
|
|
#---------------------------------------------------------------------------
|
|
|
# 'object' interface
|
|
|
#---------------------------------------------------------------------------
|
|
|
|
|
|
def __init__(self, app, frontend, existing=False, may_close=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._frontend = frontend
|
|
|
self._existing = existing
|
|
|
if existing:
|
|
|
self._may_close = may_close
|
|
|
else:
|
|
|
self._may_close = True
|
|
|
self._frontend.exit_requested.connect(self.close)
|
|
|
self.setCentralWidget(frontend)
|
|
|
|
|
|
#---------------------------------------------------------------------------
|
|
|
# QWidget interface
|
|
|
#---------------------------------------------------------------------------
|
|
|
|
|
|
def closeEvent(self, event):
|
|
|
""" Reimplemented to prompt the user and close the kernel cleanly, or
|
|
|
close without prompt only if the exit magic is used.
|
|
|
"""
|
|
|
keepkernel = None #Use the prompt by default
|
|
|
if hasattr(self._frontend,'_keep_kernel_on_exit'): #set by exit magic
|
|
|
keepkernel = self._frontend._keep_kernel_on_exit
|
|
|
|
|
|
kernel_manager = self._frontend.kernel_manager
|
|
|
|
|
|
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 self._may_close:
|
|
|
msg = "You are closing this Console window."
|
|
|
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)
|
|
|
reply = box.exec_()
|
|
|
if reply == 1: # close All
|
|
|
kernel_manager.shutdown_kernel()
|
|
|
#kernel_manager.stop_channels()
|
|
|
event.accept()
|
|
|
elif reply == 0: # close Console
|
|
|
if not self._existing:
|
|
|
# Have kernel: don't quit, just close the window
|
|
|
self._app.setQuitOnLastWindowClosed(False)
|
|
|
self.deleteLater()
|
|
|
event.accept()
|
|
|
else:
|
|
|
event.ignore()
|
|
|
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:
|
|
|
event.accept()
|
|
|
else:
|
|
|
event.ignore()
|
|
|
elif keepkernel: #close console but leave kernel running (no prompt)
|
|
|
if kernel_manager and kernel_manager.channels_running:
|
|
|
if not self._existing:
|
|
|
# I have the kernel: don't quit, just close the window
|
|
|
self._app.setQuitOnLastWindowClosed(False)
|
|
|
event.accept()
|
|
|
else: #close console and kernel (no prompt)
|
|
|
if kernel_manager and kernel_manager.channels_running:
|
|
|
kernel_manager.shutdown_kernel()
|
|
|
event.accept()
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Main entry point
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
def main():
|
|
|
""" Entry point for application.
|
|
|
"""
|
|
|
# Parse command line arguments.
|
|
|
parser = ArgumentParser()
|
|
|
kgroup = parser.add_argument_group('kernel options')
|
|
|
kgroup.add_argument('-e', '--existing', action='store_true',
|
|
|
help='connect to an existing kernel')
|
|
|
kgroup.add_argument('--ip', type=str, default=LOCALHOST,
|
|
|
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!")
|
|
|
kgroup.add_argument('--xreq', type=int, metavar='PORT', default=0,
|
|
|
help='set the XREQ channel port [default random]')
|
|
|
kgroup.add_argument('--sub', type=int, metavar='PORT', default=0,
|
|
|
help='set the SUB channel port [default random]')
|
|
|
kgroup.add_argument('--rep', type=int, metavar='PORT', default=0,
|
|
|
help='set the REP channel port [default random]')
|
|
|
kgroup.add_argument('--hb', type=int, metavar='PORT', default=0,
|
|
|
help='set the heartbeat port [default random]')
|
|
|
|
|
|
egroup = kgroup.add_mutually_exclusive_group()
|
|
|
egroup.add_argument('--pure', action='store_true', help = \
|
|
|
'use a pure Python kernel instead of an IPython kernel')
|
|
|
egroup.add_argument('--pylab', type=str, metavar='GUI', nargs='?',
|
|
|
const='auto', help = \
|
|
|
"Pre-load matplotlib and numpy for interactive use. If GUI is not \
|
|
|
given, the GUI backend is matplotlib's, otherwise use one of: \
|
|
|
['tk', 'gtk', 'qt', 'wx', 'inline'].")
|
|
|
|
|
|
wgroup = parser.add_argument_group('widget options')
|
|
|
wgroup.add_argument('--paging', type=str, default='inside',
|
|
|
choices = ['inside', 'hsplit', 'vsplit', 'none'],
|
|
|
help='set the paging style [default inside]')
|
|
|
wgroup.add_argument('--rich', action='store_true',
|
|
|
help='enable rich text support')
|
|
|
wgroup.add_argument('--gui-completion', action='store_true',
|
|
|
help='use a GUI widget for tab completion')
|
|
|
wgroup.add_argument('--style', type=str,
|
|
|
choices = list(get_all_styles()),
|
|
|
help='specify a pygments style for by name.')
|
|
|
wgroup.add_argument('--stylesheet', type=str,
|
|
|
help="path to a custom CSS stylesheet.")
|
|
|
wgroup.add_argument('--colors', type=str,
|
|
|
help="Set the color scheme (LightBG,Linux,NoColor). This is guessed\
|
|
|
based on the pygments style if not set.")
|
|
|
|
|
|
args = parser.parse_args()
|
|
|
|
|
|
# parse the colors arg down to current known labels
|
|
|
if args.colors:
|
|
|
colors=args.colors.lower()
|
|
|
if colors in ('lightbg', 'light'):
|
|
|
colors='lightbg'
|
|
|
elif colors in ('dark', 'linux'):
|
|
|
colors='linux'
|
|
|
else:
|
|
|
colors='nocolor'
|
|
|
elif args.style:
|
|
|
if args.style=='bw':
|
|
|
colors='nocolor'
|
|
|
elif styles.dark_style(args.style):
|
|
|
colors='linux'
|
|
|
else:
|
|
|
colors='lightbg'
|
|
|
else:
|
|
|
colors=None
|
|
|
|
|
|
# Don't let Qt or ZMQ swallow KeyboardInterupts.
|
|
|
import signal
|
|
|
signal.signal(signal.SIGINT, signal.SIG_DFL)
|
|
|
|
|
|
# Create a KernelManager and start a kernel.
|
|
|
kernel_manager = QtKernelManager(xreq_address=(args.ip, args.xreq),
|
|
|
sub_address=(args.ip, args.sub),
|
|
|
rep_address=(args.ip, args.rep),
|
|
|
hb_address=(args.ip, args.hb))
|
|
|
if not args.existing:
|
|
|
# if not args.ip in LOCAL_IPS+ALL_ALIAS:
|
|
|
# raise ValueError("Must bind a local ip, such as: %s"%LOCAL_IPS)
|
|
|
|
|
|
kwargs = dict(ip=args.ip)
|
|
|
if args.pure:
|
|
|
kwargs['ipython']=False
|
|
|
else:
|
|
|
kwargs['colors']=colors
|
|
|
if args.pylab:
|
|
|
kwargs['pylab']=args.pylab
|
|
|
|
|
|
kernel_manager.start_kernel(**kwargs)
|
|
|
kernel_manager.start_channels()
|
|
|
|
|
|
local_kernel = (not args.existing) or args.ip in LOCAL_IPS
|
|
|
# Create the widget.
|
|
|
app = QtGui.QApplication([])
|
|
|
if args.pure:
|
|
|
kind = 'rich' if args.rich else 'plain'
|
|
|
widget = FrontendWidget(kind=kind, paging=args.paging, local_kernel=local_kernel)
|
|
|
elif args.rich or args.pylab:
|
|
|
widget = RichIPythonWidget(paging=args.paging, local_kernel=local_kernel)
|
|
|
else:
|
|
|
widget = IPythonWidget(paging=args.paging, local_kernel=local_kernel)
|
|
|
widget.gui_completion = args.gui_completion
|
|
|
widget.kernel_manager = kernel_manager
|
|
|
|
|
|
# configure the style:
|
|
|
if not args.pure: # only IPythonWidget supports styles
|
|
|
if args.style:
|
|
|
widget.syntax_style = args.style
|
|
|
widget.style_sheet = styles.sheet_from_template(args.style, colors)
|
|
|
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 args.stylesheet:
|
|
|
# we got an expicit stylesheet
|
|
|
if os.path.isfile(args.stylesheet):
|
|
|
with open(args.stylesheet) as f:
|
|
|
sheet = f.read()
|
|
|
widget.style_sheet = sheet
|
|
|
widget._style_sheet_changed()
|
|
|
else:
|
|
|
raise IOError("Stylesheet %r not found."%args.stylesheet)
|
|
|
|
|
|
# Create the main window.
|
|
|
window = MainWindow(app, widget, args.existing, may_close=local_kernel)
|
|
|
window.setWindowTitle('Python' if args.pure else 'IPython')
|
|
|
window.show()
|
|
|
|
|
|
# Start the application main loop.
|
|
|
app.exec_()
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
main()
|
|
|
|
