[Users] [Bug 4516] New: Keyboard navigation when viewing 'text/html' part

[noreply at thewildbeast.co.uk]

https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4516

            Bug ID: 4516
           Summary: Keyboard navigation when viewing 'text/html' part
           Product: Claws Mail
           Version: 4.0.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: Plugins/Fancy
          Assignee: users at lists.claws-mail.org
          Reporter: dustbiz at gmail.com

When using the 'Fancy' plugin to view an email's HTML part (either in message
view or by opening it in a new window), keyboard navigation doesn't work as
expected/desired, whereas it does when viewing 'message/rfc822' and
'text/plain' part types.

Steps to Reproduce:

1) Build/Install Claws Mail 4.0.0 from the tarball release with 'Fancy' plugin
support, then start CM and load the plugin.

2) View the 'text/html' part of an email that has one, either in message view
or by opening in a new window.

3) Try to use the keyboard to scroll up and down in the email as you would when
viewing a different email part (i.e. space bar, Enter, etc., or hotkeys you've
assigned to the menu items in 'View - Message Scroll'.). (Switch to the
'message/rfc822' or 'text/plain' parts and try the same thing to note the
difference.)

Actual Results: No response to keyboard inputs.

Workarounds:
* 1) The mouse can be used with the scroll bar.
* 2) If you manually put the focus on the message view, then the up/down arrows
and PgUp/PgDwn keys will work, although this doesn't work when the message is
opened in a new window. However, this workaround does not result in hotkeys
assigned to the menu items in 'View - Message Scroll' working.)

Expected Results: The message will move up and down according to keyboard
inputs, consistent with how it does when viewing the 'message/rfc822' or
'text/plain' parts.

This is basically just a rewrite of the same bug I filed for the 'LiteHTML
Viewer' (Bug 4247:
https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4247). The
bug was showing as open (aka 'NEW'), but this has been fixed and working for me
for quite awhile, so I went ahead and changed its status to 'RESOLVED' /
'FIXED'. I've also confirmed that the 4.0.0 version of this plugin also works
as expected. I mention this in case this plugin's code could be used as a
reference to provide this same enhancement for 'Fancy'.

For my current usage, I am mainly interested in keyboard usage with hotkeys
assigned to the menu items in 'View - Message Scroll'. However, for those who
are interested in keyboard usage with the 'default' space-bar and 'Enter' keys,
then I'm guessing this bug has some overlap with Bug #4503
(https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4503).

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