Restore Script Editor focus

README.md

Problem

On Windows systems using Autodesk Maya, the text input field of the Script Editor doesn't regain focus after having restored focus to the main window. This event handler explicitly restores focus, if it turns out to have been the last active panel at the time of leaving the application.

Usage

Place the full contents of the script below into your userSetup.py and never again lose focus.

Tested on Maya 2013-2016+ and is safe to use on other platforms where it simply does nothing.

script.py

# work around the PySide/PySide2 mess ------------------
try:
    from shiboken2 import wrapInstance
    from PySide2 import QtCore, QtGui, QtWidgets
except ImportError:
    from shiboken import wrapInstance
    from PySide import QtCore, QtGui
    import PySide.QtGui as QtWidgets
# ------------------------------------------------------


class RestoreScriptEditorFocus(QtCore.QObject):
    def __init__(self):
        super(RestoreScriptEditorFocus, self).__init__()
        QtWidgets.qApp.focusChanged.connect(self.on_focuschanged)
        self.restore = False

    def on_focuschanged(self, old, new):
        self.restore = "cmdScrollFieldExecuter" in old.objectName() if old else False

    def eventFilter(self, obj, event):
        if event.type() == QtCore.QEvent.ApplicationActivate and self.restore:
            try:
                script_editor = next(w for w in QtWidgets.qApp.topLevelWidgets() if w.objectName() == "scriptEditorPanel1Window" or w.accessibleName() == "Script Editor")
                script_editor.activateWindow()
                return True
            except StopIteration:
                # Perhaps the script editor was docked
                pass

        return super(RestoreScriptEditorFocus, self).eventFilter(obj, event)

f = RestoreScriptEditorFocus()
QtWidgets.qApp.installEventFilter(f)