|
|
# Local imports.
|
|
|
from frontend_widget import FrontendWidget
|
|
|
|
|
|
|
|
|
class IPythonWidget(FrontendWidget):
|
|
|
""" A FrontendWidget for an IPython kernel.
|
|
|
"""
|
|
|
|
|
|
#---------------------------------------------------------------------------
|
|
|
# 'FrontendWidget' interface
|
|
|
#---------------------------------------------------------------------------
|
|
|
|
|
|
def __init__(self, kernel_manager, parent=None):
|
|
|
super(IPythonWidget, self).__init__(kernel_manager, parent)
|
|
|
|
|
|
self._magic_overrides = {}
|
|
|
|
|
|
def execute_source(self, source, hidden=False, interactive=False):
|
|
|
""" Reimplemented to override magic commands.
|
|
|
"""
|
|
|
magic_source = source.strip()
|
|
|
if magic_source.startswith('%'):
|
|
|
magic_source = magic_source[1:]
|
|
|
magic, sep, arguments = magic_source.partition(' ')
|
|
|
if not magic:
|
|
|
magic = magic_source
|
|
|
|
|
|
callback = self._magic_overrides.get(magic)
|
|
|
if callback:
|
|
|
output = callback(arguments)
|
|
|
if output:
|
|
|
self.appendPlainText(output)
|
|
|
self._show_prompt('>>> ')
|
|
|
return True
|
|
|
else:
|
|
|
return super(IPythonWidget, self).execute_source(source, hidden,
|
|
|
interactive)
|
|
|
|
|
|
#---------------------------------------------------------------------------
|
|
|
# 'IPythonWidget' interface
|
|
|
#---------------------------------------------------------------------------
|
|
|
|
|
|
def set_magic_override(self, magic, callback):
|
|
|
""" Overrides an IPython magic command. This magic will be intercepted
|
|
|
by the frontend rather than passed on to the kernel and 'callback'
|
|
|
will be called with a single argument: a string of argument(s) for
|
|
|
the magic. The callback can (optionally) return text to print to the
|
|
|
console.
|
|
|
"""
|
|
|
self._magic_overrides[magic] = callback
|
|
|
|
|
|
def remove_magic_override(self, magic):
|
|
|
""" Removes the override for the specified magic, if there is one.
|
|
|
"""
|
|
|
try:
|
|
|
del self._magic_overrides[magic]
|
|
|
except KeyError:
|
|
|
pass
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
import sys
|
|
|
from IPython.frontend.qt.kernelmanager import QtKernelManager
|
|
|
|
|
|
# Create KernelManager
|
|
|
xreq_addr = ('127.0.0.1', 5575)
|
|
|
sub_addr = ('127.0.0.1', 5576)
|
|
|
rep_addr = ('127.0.0.1', 5577)
|
|
|
kernel_manager = QtKernelManager(xreq_addr, sub_addr, rep_addr)
|
|
|
kernel_manager.sub_channel.start()
|
|
|
kernel_manager.xreq_channel.start()
|
|
|
|
|
|
# Launch application
|
|
|
app = QtGui.QApplication(sys.argv)
|
|
|
widget = IPythonWidget(kernel_manager)
|
|
|
widget.setWindowTitle('Python')
|
|
|
widget.resize(640, 480)
|
|
|
widget.show()
|
|
|
sys.exit(app.exec_())
|
|
|
|
|
|
|
