application_window.py

# (C) Copyright 2005-2020 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!

""" Application window example. """


from pyface.api import ApplicationWindow, GUI
from pyface.action.api import Action, MenuManager, MenuBarManager
from pyface.action.api import StatusBarManager, ToolBarManager, Group


class MainWindow(ApplicationWindow):
    """ The main application window. """

    #: The initial size of the application window.
    size = (800, 600)

    # ------------------------------------------------------------------------
    # 'object' interface.
    # ------------------------------------------------------------------------

    def __init__(self, **traits):
        """ Creates a new application window. """

        # Base class constructor.
        super(MainWindow, self).__init__(**traits)

        # Create an action that exits the application.
        exit_action = Action(name="E&xit", on_perform=self.close)
        self.exit_action = exit_action

        # Test action to toggle visibility of exit action and some action groups
        test_action = Action(name="&Toggle", on_perform=self.toggle)

        # Add a menu bar.
        self.menu_bar_manager = MenuBarManager(
            MenuManager(exit_action, name="&File")
        )

        # Add some tool bars, with the first one subdivided into action groups
        self.tool_bar_managers = [
            ToolBarManager(
                Group(exit_action, exit_action, id="a"),
                Group(id="b"),  # empty, so will remain hidden
                Group(exit_action, exit_action, id="c"),
                Group(exit_action, test_action, exit_action, id="d"),
                name="Tool Bar 1",
                show_tool_names=True,
            ),
            ToolBarManager(
                exit_action, name="Tool Bar 2", show_tool_names=True
            ),
            ToolBarManager(
                test_action, name="Tool Bar 3", show_tool_names=True
            ),
        ]

        # Add a status bar.
        self.status_bar_manager = StatusBarManager()
        self.status_bar_manager.message = "Example application window"

    def toggle(self):
        """ Toggle the visibility of the exit action and of the first 3 groups
        in the first toolbar, which contain only exit actions.
        """
        visible = not self.exit_action.visible
        self.exit_action.visible = visible
        for group in self.tool_bar_managers[0].groups[:-1]:
            group.visible = visible


# Application entry point.
if __name__ == "__main__":
    # Create the GUI (this does NOT start the GUI event loop).
    gui = GUI()

    # Create and open the main window.
    window = MainWindow()
    window.open()

    # Start the GUI event loop!
    gui.start_event_loop()