upstream/ipython Files · IPython/terminal/pt_inputhooks/qt.py

Add warnings import in completer module...

Add warnings import in completer module Closes gh-10236

Thomas Kluyver - - Load All Authors

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             qt.py
        
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        Thomas Kluyver
    
Try to fix Qt event loop, take III...

              r22654
            
      import sys

        Thomas Kluyver
    
Write & borrow some inputhooks for prompt_toolkit

              r21934
            
      from IPython.external.qt_for_kernel import QtCore, QtGui

        Thomas Kluyver
    
Create a QApplication for inputhook if one doesn't already exist...

              r22707
            
      # If we create a QApplication, keep a reference to it so that it doesn't get

      # garbage collected.

      _appref = None

        Thomas Kluyver
    
Write & borrow some inputhooks for prompt_toolkit

              r21934
            
      def inputhook(context):

        Thomas Kluyver
    
Create a QApplication for inputhook if one doesn't already exist...

              r22707
            
          global _appref

        Thomas Kluyver
    
Write & borrow some inputhooks for prompt_toolkit

              r21934
            
          app = QtCore.QCoreApplication.instance()

          if not app:

        Thomas Kluyver
    
Create a QApplication for inputhook if one doesn't already exist...

              r22707
            
              _appref = app = QtGui.QApplication([" "])

        Thomas Kluyver
    
Write & borrow some inputhooks for prompt_toolkit

              r21934
            
          event_loop = QtCore.QEventLoop(app)

        Thomas Kluyver
    
Try to fix Qt event loop, take III...

              r22654
            
          if sys.platform == 'win32':

              # The QSocketNotifier method doesn't appear to work on Windows.

              # Use polling instead.

              timer = QtCore.QTimer()

              timer.timeout.connect(event_loop.quit)

              while not context.input_is_ready():

                  timer.start(50)  # 50 ms

                  event_loop.exec_()

                  timer.stop()

          else:

              # On POSIX platforms, we can use a file descriptor to quit the event

              # loop when there is input ready to read.

              notifier = QtCore.QSocketNotifier(context.fileno(), QtCore.QSocketNotifier.Read)

              notifier.setEnabled(True)

              notifier.activated.connect(event_loop.exit)

              event_loop.exec_()

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Thomas Kluyver Try to fix Qt event loop, take III...	r22654	import sys
Thomas Kluyver Write & borrow some inputhooks for prompt_toolkit	r21934	from IPython.external.qt_for_kernel import QtCore, QtGui

Thomas Kluyver Create a QApplication for inputhook if one doesn't already exist...	r22707	# If we create a QApplication, keep a reference to it so that it doesn't get
		# garbage collected.
		_appref = None

Thomas Kluyver Write & borrow some inputhooks for prompt_toolkit	r21934	def inputhook(context):
Thomas Kluyver Create a QApplication for inputhook if one doesn't already exist...	r22707	global _appref
Thomas Kluyver Write & borrow some inputhooks for prompt_toolkit	r21934	app = QtCore.QCoreApplication.instance()
		if not app:
Thomas Kluyver Create a QApplication for inputhook if one doesn't already exist...	r22707	_appref = app = QtGui.QApplication([" "])
Thomas Kluyver Write & borrow some inputhooks for prompt_toolkit	r21934	event_loop = QtCore.QEventLoop(app)
Thomas Kluyver Try to fix Qt event loop, take III...	r22654
		if sys.platform == 'win32':
		# The QSocketNotifier method doesn't appear to work on Windows.
		# Use polling instead.
		timer = QtCore.QTimer()
		timer.timeout.connect(event_loop.quit)
		while not context.input_is_ready():
		timer.start(50) # 50 ms
		event_loop.exec_()
		timer.stop()
		else:
		# On POSIX platforms, we can use a file descriptor to quit the event
		# loop when there is input ready to read.
		notifier = QtCore.QSocketNotifier(context.fileno(), QtCore.QSocketNotifier.Read)
		notifier.setEnabled(True)
		notifier.activated.connect(event_loop.exit)
		event_loop.exec_()