From e0e3e1717e3d33762ce61950504f9637a6e669ed Mon Sep 17 00:00:00 2001
From: nkozlovskiy <nmk@ydb.tech>
Date: Fri, 29 Sep 2023 12:24:06 +0300
Subject: add ydb deps
---
.../python/ipython/py3/IPython/lib/guisupport.py | 155 +++++++++++++++++++++
1 file changed, 155 insertions(+)
create mode 100644 contrib/python/ipython/py3/IPython/lib/guisupport.py
(limited to 'contrib/python/ipython/py3/IPython/lib/guisupport.py')
diff --git a/contrib/python/ipython/py3/IPython/lib/guisupport.py b/contrib/python/ipython/py3/IPython/lib/guisupport.py
new file mode 100644
index 0000000000..4d532d0f4d
--- /dev/null
+++ b/contrib/python/ipython/py3/IPython/lib/guisupport.py
@@ -0,0 +1,155 @@
+# coding: utf-8
+"""
+Support for creating GUI apps and starting event loops.
+
+IPython's GUI integration allows interactive plotting and GUI usage in IPython
+session. IPython has two different types of GUI integration:
+
+1. The terminal based IPython supports GUI event loops through Python's
+ PyOS_InputHook. PyOS_InputHook is a hook that Python calls periodically
+ whenever raw_input is waiting for a user to type code. We implement GUI
+ support in the terminal by setting PyOS_InputHook to a function that
+ iterates the event loop for a short while. It is important to note that
+ in this situation, the real GUI event loop is NOT run in the normal
+ manner, so you can't use the normal means to detect that it is running.
+2. In the two process IPython kernel/frontend, the GUI event loop is run in
+ the kernel. In this case, the event loop is run in the normal manner by
+ calling the function or method of the GUI toolkit that starts the event
+ loop.
+
+In addition to starting the GUI event loops in one of these two ways, IPython
+will *always* create an appropriate GUI application object when GUi
+integration is enabled.
+
+If you want your GUI apps to run in IPython you need to do two things:
+
+1. Test to see if there is already an existing main application object. If
+ there is, you should use it. If there is not an existing application object
+ you should create one.
+2. Test to see if the GUI event loop is running. If it is, you should not
+ start it. If the event loop is not running you may start it.
+
+This module contains functions for each toolkit that perform these things
+in a consistent manner. Because of how PyOS_InputHook runs the event loop
+you cannot detect if the event loop is running using the traditional calls
+(such as ``wx.GetApp.IsMainLoopRunning()`` in wxPython). If PyOS_InputHook is
+set These methods will return a false negative. That is, they will say the
+event loop is not running, when is actually is. To work around this limitation
+we proposed the following informal protocol:
+
+* Whenever someone starts the event loop, they *must* set the ``_in_event_loop``
+ attribute of the main application object to ``True``. This should be done
+ regardless of how the event loop is actually run.
+* Whenever someone stops the event loop, they *must* set the ``_in_event_loop``
+ attribute of the main application object to ``False``.
+* If you want to see if the event loop is running, you *must* use ``hasattr``
+ to see if ``_in_event_loop`` attribute has been set. If it is set, you
+ *must* use its value. If it has not been set, you can query the toolkit
+ in the normal manner.
+* If you want GUI support and no one else has created an application or
+ started the event loop you *must* do this. We don't want projects to
+ attempt to defer these things to someone else if they themselves need it.
+
+The functions below implement this logic for each GUI toolkit. If you need
+to create custom application subclasses, you will likely have to modify this
+code for your own purposes. This code can be copied into your own project
+so you don't have to depend on IPython.
+
+"""
+
+# Copyright (c) IPython Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+from IPython.core.getipython import get_ipython
+
+#-----------------------------------------------------------------------------
+# wx
+#-----------------------------------------------------------------------------
+
+def get_app_wx(*args, **kwargs):
+ """Create a new wx app or return an exiting one."""
+ import wx
+ app = wx.GetApp()
+ if app is None:
+ if 'redirect' not in kwargs:
+ kwargs['redirect'] = False
+ app = wx.PySimpleApp(*args, **kwargs)
+ return app
+
+def is_event_loop_running_wx(app=None):
+ """Is the wx event loop running."""
+ # New way: check attribute on shell instance
+ ip = get_ipython()
+ if ip is not None:
+ if ip.active_eventloop and ip.active_eventloop == 'wx':
+ return True
+ # Fall through to checking the application, because Wx has a native way
+ # to check if the event loop is running, unlike Qt.
+
+ # Old way: check Wx application
+ if app is None:
+ app = get_app_wx()
+ if hasattr(app, '_in_event_loop'):
+ return app._in_event_loop
+ else:
+ return app.IsMainLoopRunning()
+
+def start_event_loop_wx(app=None):
+ """Start the wx event loop in a consistent manner."""
+ if app is None:
+ app = get_app_wx()
+ if not is_event_loop_running_wx(app):
+ app._in_event_loop = True
+ app.MainLoop()
+ app._in_event_loop = False
+ else:
+ app._in_event_loop = True
+
+#-----------------------------------------------------------------------------
+# Qt
+#-----------------------------------------------------------------------------
+
+def get_app_qt4(*args, **kwargs):
+ """Create a new Qt app or return an existing one."""
+ from IPython.external.qt_for_kernel import QtGui
+ app = QtGui.QApplication.instance()
+ if app is None:
+ if not args:
+ args = ([""],)
+ app = QtGui.QApplication(*args, **kwargs)
+ return app
+
+def is_event_loop_running_qt4(app=None):
+ """Is the qt event loop running."""
+ # New way: check attribute on shell instance
+ ip = get_ipython()
+ if ip is not None:
+ return ip.active_eventloop and ip.active_eventloop.startswith('qt')
+
+ # Old way: check attribute on QApplication singleton
+ if app is None:
+ app = get_app_qt4([""])
+ if hasattr(app, '_in_event_loop'):
+ return app._in_event_loop
+ else:
+ # Does qt provide a other way to detect this?
+ return False
+
+def start_event_loop_qt4(app=None):
+ """Start the qt event loop in a consistent manner."""
+ if app is None:
+ app = get_app_qt4([""])
+ if not is_event_loop_running_qt4(app):
+ app._in_event_loop = True
+ app.exec_()
+ app._in_event_loop = False
+ else:
+ app._in_event_loop = True
+
+#-----------------------------------------------------------------------------
+# Tk
+#-----------------------------------------------------------------------------
+
+#-----------------------------------------------------------------------------
+# gtk
+#-----------------------------------------------------------------------------
--
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