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More trash info

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svn path=/trunk/; revision=6369
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Matthias Clasen 2008-01-25 04:16:48 +00:00
parent 66a1ebd314
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4
docs/reference/ChangeLog
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@ -1,3 +1,7 @@
2008-01-24 Matthias Clasen <mclasen@redhat.com>
* gio/migration.xml: Some more
2008-01-23 Matthias Clasen <mclasen@redhat.com>
* gio/migration.xml: Add something on trash handling

59
docs/reference/gio/migrating.xml
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@ -59,20 +59,60 @@
The handling of trashed files has been changed in GIO, compared
to gnome-vfs. gnome-vfs has a home-grown trash implementation that
predates the freedesktop.org <ulink url="http://www.freedesktop.org/wiki/Specifications/trash-spec">Desktop Trash Can</ulink> specification
that is implemented in GIO.
</para>
<para>
Both systems support a the <filename>trash://</filename> scheme to
access a merged view of all trashed files, but the location for
storing trashed files has changed from <filename>$HOME/.Trash</filename>
to <filename>$HOME/.local/share/Trash</filename> (or more correctly
that is implemented in GIO. The location for storing trashed files
has changed from <filename>$HOME/.Trash</filename> to
<filename>$HOME/.local/share/Trash</filename> (or more correctly
<filename>$XDG_DATA_HOME/Trash</filename>), which means that
there is a need for migrating files that have been trashed by
gnome-vfs to the new location.
</para>
<para>
In gnome-vfs, the <filename>trash://</filename> scheme offering a
merged view of all trash directories was implemented in nautilus,
and trash-handling applications had to find and monitor all trash
directories themselves. With GIO, the <filename>trash://</filename>
implementation has been moved to gvfs and applications can simply
monitor that location:
</para>
<informalexample><programlisting>
static void
file_changed (GFileMonitor *file_monitor,
GFile *child,
GFile *other_file,
GFileMonitorEvent event_type,
gpointer user_data)
{
switch (event_type)
{
case G_FILE_MONITOR_EVENT_DELETED:
g_print ("'%s' removed from trash\n", g_file_get_basename (child));
break;
case G_FILE_MONITOR_EVENT_CREATED:
g_print ("'%s' added to trash\n", g_file_get_basename (child));
break;
default: ;
}
}
static void
start_monitoring_trash (void)
{
GFile *file;
GFileMonitor *monitor;
file = g_file_new_for_uri ("trash://");
monitor = g_file_monitor_directory (file, 0, NULL, NULL);
g_object_unref (file);
g_signal_connect (monitor, "changed", G_CALLBACK (file_changed), NULL);
/* ... */
}
</programlisting></informalexample>
<para>
GIO exposes some useful metadata about trashed files. There are
trash::orig-path and tash::deletion-date attributes. The
trash::orig-path and trash::deletion-date attributes. The
standard::icon attribute of the <filename>trash://</filename>
itself provides a suitable icon for displaying the trash can on
the desktop. If you are using this icon, make sure to monitor
@ -97,7 +137,8 @@
</para>
<para>
GIO offers a much simpler I/O scheduler functionality instead, that
lets you schedule a function to be called in a separate thread.
lets you schedule a function to be called in a separate thread, or
if threads are not available, as an idle in the mainloop.
See g_io_scheduler_push_job().
</para>