Dispatcher

class tools.preview.preview.Dispatcher(app: Preview)

Bases: object

Handles the app level tk.Variables and the threading events. Dispatches events to the correct location and handles GUI state whilst events are handled

Parameters:

app (Preview) – The main tkinter Preview app

Attributes Summary

needs_patch

Set by the parent and cleared by the child.

Methods Summary

set_busy()	Set the tkinter busy variable to True and display the busy progress bar
set_needs_patch()	Sends a trigger to the patching thread that it needs to be run.

Attributes Documentation

needs_patch

Set by the parent and cleared by the child. Informs the child patching thread that a run needs to be processed

Methods Documentation

set_busy() → None

Set the tkinter busy variable to True and display the busy progress bar

Return type:

None

set_needs_patch() → None

Sends a trigger to the patching thread that it needs to be run. Waits for the patching to complete prior to triggering a display refresh and unsetting the busy indicators

Return type:

None

property needs_patch: Event

Set by the parent and cleared by the child. Informs the child patching thread that a run needs to be processed

set_busy() → None

Set the tkinter busy variable to True and display the busy progress bar

Return type:

None

set_needs_patch() → None

Sends a trigger to the patching thread that it needs to be run. Waits for the patching to complete prior to triggering a display refresh and unsetting the busy indicators

Return type:

None