Fixes#31750.
The control buttons of the edit box were flickering b/w default cursor
and pointer cursor after c1d155d923.
The addition of `position: relative` to `.edit-content-container` was
causing that. We've now added a div to apply position:relative to, this
div does not have any edit controls in it's children.
Previously, the message controls for failed messages was present for
all messages, regardless of their status, and was being rendered
unconditionally; only being hidden for successfully sent messages.
This commit adds dynamic rendering for the failed message controls,
only rendering them via the handlebars template when a message is
confirmed to be failed.
Fixes#31132.
This commit moves the placeholder elements for the message edit form,
to `message_edit_form.hbs`, so they are conditionally rendered only
when a message is being edited, rather than being present for every
message in the list.
Fixes#31134.
With the refactoring of the rendered-Markdown area to use only
margin bottom, including in message-edit previewsk, these expensive,
general selectors are unnecessary.
Headings and horizontal rules, which do have margin-top, are zeroed
out elsewhere in the rendered-markdown file.
The row of buttons is placed using CSS grid template areas so that
visually it is now inside the bottom edge of the textbox. The color of
the buttons row and individual buttons is changed to match the color of
the textbox. All textbox border / box shadow properties are now applied
to its parent instead which is extended under the buttons' row, so that
its border snuggly fits around the buttons row too.
Notable side effects:
- In dark mode the textbox in focused state now has a light border which
does not match the recipient input's current border which doesn't change
when focused. Likely, the recipient input should be updated to match the
textbox's border color.
- The dividers in the formatting buttons row are not vertically centered
now. This should be figured out soon.
Fixes: #28702.
So far, the Send buttons area would turn grey when the message could not
be sent. The Save button when editing a message would also turn grey
when the message could not be edited anymore. Now we simply make the
buttons half opaque instead of turning them grey in a disabled state.
We change the background colors for the close / cancel / exit buttons
in modals and messages (when editing them or viewing their source). The
border is also removed for those buttons in messages.
When viewing the source of a message when not editable, the opacity of
the read-only textarea would be reduced to 0.5, like for any other read-
only textarea in dark mode. This was unnecessary for viewing message
source, so the opacity for this case is now set to 1.
Fixes: #28701.
This expresses the height of the message row without need of
margical margins.
Extending the correct line-height to timestamps also means that
single-line messages will be the height of their combined content
and padding, and not erroneously held open by an oversize 28px
timestamp line-height.
Those corrections mean, too, that .message-time only needs to have
its line-height declared a single place, regardless of context.