Implement #26: Add toolbar menu.

[donnemartin]

Changes

• Option Toggles:
  • Enables fuzzy or substring matching.
  • Enables Vi or Emacs key bindings.
  • Shows multi or single columns in the autocompletion menu.
  • Shows or hide the help pane.
• Config class with tests
  • Saves and loads options to a config file.
  • If no config file exists (ie first run), uses the new template file awsshellrc.
• KeyManager class with tests
  • Allows users to change config through hotkeys and to exit the app with F10.
• Toolbar class with tests
  • Displays info about options, option states, and hotkeys.
• StyleFactory class
  • Generates toolbar styles and autocompletion menu styles.

    Tests

Includes automated tests.

Also tested manually on:

• OS X 10.10 (Python 2.7.10, Python 3.4.3)
• Ubuntu 14.04 LTS (Python 2.7.6)
• Windows 10 (Python 2.7.6)

  Branch Base

Note: The base of this branch is from feature/28-auto-suggestions.

Unfortunately, you will also see changes from feature/28-auto-suggestions (https://github.com/awslabs/aws-shell/pull/44), although the changes are relatively minor.

[jamesls]

Awesome, I'm taking a look at this now.

[jamesls]

:shipit: Looks good to me. I just had one question about adding back the line between the docs and the input container.

[donnemartin]

Thanks for the review and feedback James.

About the separator line, I'll take a closer look either later this evening or tomorrow morning.

Early on I had noticed cosmetic issues when adding the toolbar. I believe the problem was the help and toolbar were overlapping, perhaps not enough vertical space was being allocated. If I recall correctly the change in question fixed that issue, although it seems I was confused when I added the comment and I also failed to notice the missing line above help pane.

I did upgrade prompt_toolkit to 0.52 which might have fixed the cosmetic issue by itself.

I'll try to sort this out and add the line back before merging in the changes.

[donnemartin]

I placed the original line back above the help and confirmed there are no cosmetic issues on both Mac and Windows.

I think it would be nice to add an additional line below the help text, otherwise the spacing is a little tight.

No additional line below help:

Additional line below help:

[donnemartin]

If no other issues, I'll try to resolve the conflicts and merge tomorrow morning.

I'll add the other feedback on my TODO.

[jamesls]

:+1: Sounds good to me.