The preview widget harks from a platform before time, when we didn't
have GIO, or a thumbnail specification.
Very few applications use it correctly, if at all; it has an horrid hack
to deal with the ownership of the widget's instance when accessed
through the getter function; it messes up the layout of the widget and
its label is less than useful when it comes to file names longer than a
dozen characters; it's a poor substitute for a proper thumbnail view.
GtkFileChooser's API predates GIO by a few years, so it started off with
filenames and URI as character arrays. After introducing GIO as a
dependency, the API included GFile-based entry points.
It's much more appropriate to use GFile everywhere, as we want to
encourage people to use GIO instead of passing random bytes to low level
POSIX API.
See: #2455
Although slightly less efficient, keeping the order in the choices
list makes it easier for GtkFileChooserNative implementations to
add widgets in the order specified by the application.
See Merge Request !1043
gtk_file_chooser_set_filter() doesn't work for GtkFileChooserNative. The
code forwards added and removed filters to the delegate dialog, but
doesn't do anything to set the selected one, so the wrong one gets
chosen. So fix that.
This only fixes the fallback dialog. The portal will be fixed in a
subsequent commit.
Partial fix for #1492
Remove all the old 2.x and 3.x version annotations.
GTK+ 4 is a new start, and from the perspective of a
GTK+ 4 developer all these APIs have been around since
the beginning.
This patch makes that work using 1 of 2 options:
1. Add all missing enums to the switch statement
or
2. Cast the switch argument to a uint to avoid having to do that (mostly
for GdkEventType).
I even found a bug while doing that: clearing a GtkImage with a surface
did not notify thae surface property.
The reason for enabling this flag even though it is tedious at times is
that it is very useful when adding values to an enum, because it makes
GTK immediately warn about all the switch statements where this enum is
relevant.
And I expect changes to enums to be frequent during the GTK4 development
cycle.
Implement GtkFileChooserNative for sandboxed applications
by talking to org.freedesktop.portal.FileChooser. Currently,
this supports OPEN and SAVE mode.
https://bugzilla.gnome.org/show_bug.cgi?id=768499
