Revert "Leave export values as modal"

impact27 · impact27 · commit 2fe3e1ede7ca · 2021-06-17T11:21:00.000+02:00
This reverts commit cd6511b.
diff --git a/lib/matplotlib/backends/backend_qt5.py b/lib/matplotlib/backends/backend_qt5.py
@@ -802,13 +802,14 @@ def __init__(self, targetfig, parent):
         self._figure = targetfig
         self._defaults = {spinbox: vars(self._figure.subplotpars)[attr]
                           for attr, spinbox in self._spinboxes.items()}
+        self._export_values_dialog = None
 
     def _export_values(self):
         # Explicitly round to 3 decimals (which is also the spinbox precision)
         # to avoid numbers of the form 0.100...001.
-        dialog = QtWidgets.QDialog()
+        self._export_values_dialog = QtWidgets.QDialog()
         layout = QtWidgets.QVBoxLayout()
-        dialog.setLayout(layout)
+        self._export_values_dialog.setLayout(layout)
         text = QtWidgets.QPlainTextEdit()
         text.setReadOnly(True)
         layout.addWidget(text)
@@ -822,7 +823,7 @@ def _export_values(self):
             QtGui.QFontMetrics(text.document().defaultFont())
             .size(0, text.toPlainText()).height() + 20)
         text.setMaximumSize(size)
-        dialog.exec_()
+        self._export_values_dialog.show()
 
     def _on_value_changed(self):
         spinboxes = self._spinboxes
