intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 43 insertions, 0 deletions

diff --git a/contrib/python/ipython/py3/IPython/lib/inputhookgtk4.py b/contrib/python/ipython/py3/IPython/lib/inputhookgtk4.py
new file mode 100644
index 0000000000..a872cee36a
--- /dev/null
+++ b/contrib/python/ipython/py3/IPython/lib/inputhookgtk4.py
@@ -0,0 +1,43 @@
+"""
+Enable Gtk4 to be used interactively by IPython.
+"""
+# -----------------------------------------------------------------------------
+# Copyright (c) 2021, the IPython Development Team.
+#
+# Distributed under the terms of the Modified BSD License.
+#
+# The full license is in the file COPYING.txt, distributed with this software.
+# -----------------------------------------------------------------------------
+
+# -----------------------------------------------------------------------------
+# Imports
+# -----------------------------------------------------------------------------
+
+import sys
+
+from gi.repository import GLib
+
+# -----------------------------------------------------------------------------
+# Code
+# -----------------------------------------------------------------------------
+
+
+class _InputHook:
+    def __init__(self, context):
+        self._quit = False
+        GLib.io_add_watch(sys.stdin, GLib.PRIORITY_DEFAULT, GLib.IO_IN, self.quit)
+
+    def quit(self, *args, **kwargs):
+        self._quit = True
+        return False
+
+    def run(self):
+        context = GLib.MainContext.default()
+        while not self._quit:
+            context.iteration(True)
+
+
+def inputhook_gtk4():
+    hook = _InputHook()
+    hook.run()
+    return 0