Don't make the popup follow the slider while it is open; that
makes interaction with it unnecessarily hard. Also move all the
popups inwards a little bit, so they are not flush with the
scales, which looks untidy.
https://bugzilla.gnome.org/show_bug.cgi?id=763380
We were not taking the scrollable borders into account when
requesting size for the scrolled window, which could lead
to underallocating the scrollbars at size allocation time
when we *did* take the borders into account.
This is most notable with treeviews, where we have the
headers as borders, and was causing the treeview-crash-too-wide
reftest to fail.
The tree walk holds a tree iter, which will become invalid
when we either remove the row that it points to or remove
all rows.
Reset the tree walk in those cases to avoid a crash that
was pointed out by Bastien Nocera.
This widget is a bit unusual in that it is a box that acts as
the drop target, while the visible content is a child of the box.
Propagate :drop(active) to the child to make the highlight visible.
We previously considered any click inside the trough if it
hit an area that the slider might cover. Bring this behavior
back; the trough of scales is otherwise just too narrow to
hit easily with a click.
Consider this bug:
1. Open a file chooser; switch it to $HOME
2. Start typing "~/Dow" with some file that *does* exist in your $HOME
3. Delete the inline-completion selection (e.g. the "nloads" after "~/Down").
4. While you are at "~/Dow_" hit Tab. No completion will occur.
This happens because of the following.
Say the GtkFileChooserEntry is in the process of loading $HOME,
because _set_base_folder() was called. If the entry contains no text,
then the FULL_PATH_COLUMN of the file system model will be set to
unprefixed filenames from $HOME, like
.ssh/
Documents/
Downloads/
somefile.txt
Later we avoid reloading the folder if g_file_equal(old_folder, new_folder).
However, the FULL_PATH_COLUMN gets populated in completion_store_set()
out of the actual filenames that GIO returned, plus the chooser_entry->dir_part.
If the user starts typing "~/Dow" then dir_part changes to "~/", *but*
the folder won't be reloaded since it is also $HOME. However, the completion
machinery assumes that FULL_PATH_COLUMN will contain prefixed entries like
~/.ssh/
~/Documents/
~/Downloads/
~/somefile.txt
So, we add an invariant that chooser_entry->dir_part and
chooser_entry->current_folder_file must change at the same time, and
must not get out of sync: If any of them changes, then the
completions are regenerated.
The adjustment double properties allow values from -G_MAXDOUBLE
to G_MAXDOUBLE, which leads to overflow when calculating
max - min / 10. To avoid that, simply use a fixed page_size of 1.0.
