Idle: add help to config dialogs

[terryjreedy]

BPO	22726
Nosy	@terryjreedy, @roseman
Files	@config-help-34.diff

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/terryjreedy'
closed_at = <Date 2015-10-12.02:13:10.134>
created_at = <Date 2014-10-25.04:46:23.840>
labels = ['expert-IDLE', 'type-feature']
title = 'Idle: add help to config dialogs'
updated_at = <Date 2019-03-21.18:19:30.056>
user = 'https://github.com/terryjreedy'

bugs.python.org fields:

activity = <Date 2019-03-21.18:19:30.056>
actor = 'terry.reedy'
assignee = 'terry.reedy'
closed = True
closed_date = <Date 2015-10-12.02:13:10.134>
closer = 'terry.reedy'
components = ['IDLE']
creation = <Date 2014-10-25.04:46:23.840>
creator = 'terry.reedy'
dependencies = []
files = ['37010']
hgrepos = []
issue_num = 22726
keywords = ['patch']
message_count = 5.0
messages = ['229981', '252371', '252440', '252836', '252837']
nosy_count = 4.0
nosy_names = ['terry.reedy', 'markroseman', 'python-dev', 'Saimadhav.Heblikar']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue22726'
versions = ['Python 2.7', 'Python 3.4', 'Python 3.5', 'Python 3.6']

[terryjreedy]

At one time, ConfigDialog was given a do-nothing Help button. It was diabled a couple of years ago. This patch restores it for both config dialogs, displaying a text appropriate for both. There are separate functions in anticipation of dialog-specific content. For both, there is the issue of when changes take effect (bpo-22707). For extensions, there might be extension-specific help (bpo-22705).

[terryjreedy]

This patch does two things: 1. restore the Help button and make it display something; 2. lower case the method names. The latter is a separate issue, best done in a new file. What is needed for bpo-25313 is tab-specific text.

Also, now that Config Extenstion uses a list rather than tabs, it couldn be added as a tab to the main dialog, and only one set of button event handlers would be needed. Tab-specific text would be needed first.

[roseman]

I'm not against online help, but I feel that what's there wouldn't be helpful to someone using IDLE.

Once this would be extended to per-tab, what are the problem areas that people really need help with? Also keeping in mind we're going to be replacing this dialog (at least for people with tk > 8.4) in the not too distant future.

[python-dev]

New changeset fd41b05b8227 by Terry Jan Reedy in branch '2.7':
Issue bpo-22726: Re-activate config dialog help button with some content about
https://hg.python.org/cpython/rev/fd41b05b8227

New changeset 01f83efcc44b by Terry Jan Reedy in branch '3.4':
Issue bpo-22726: Re-activate config dialog help button with some content about
https://hg.python.org/cpython/rev/01f83efcc44b

[terryjreedy]

I rewrote the common section to explain what the button do. I did not modify the extensions dialog because I want to finish bpo-24782. bpo-22707 may add more.