Le 24/10/2016 à 10:58, Eloy García (PC Actual) a écrit : > Hi Didier! > > Thanks as always for your answer and feedback :) I suspected it and I > was taking a look to desktop launcher source code on github, but I > didn't have time to test it. One question: Can I create the symblink > when the snap application is executed (after installation) via the > script that i use to wrap up the launching process or will I have > problems to do that because of the confinement?
No worry :) As long as your snap has the right plug to access the initial file, this isn't an issue (and exactly what I'm doing in the desktop launcher for dconf/gsettings: creating symlink on first launch or after each snap upgrade if the symlink isn't present). You can see such an example in https://github.com/ubuntu/snapcraft-desktop-helpers/blob/master/glib-only/launcher-specific#L37 for instance. (But yeah, it relies on /home/$USER/ and should probably find a better way to get user's real home directory. I can't use $HOME as it's redirected to SNAP_USER_DATA in some cases) > > Best, > > Eloy > > 2016-10-24 10:14 GMT+02:00 Didier Roche <didro...@ubuntu.com > <mailto:didro...@ubuntu.com>>: > > Le 06/10/2016 à 21:34, Eloy García (PC Actual) a écrit : >> Hi all. >> >> I develop a java-based application to download and manage >> wallpapers from the Internet (wallpaperdownloader) >> (https://bitbucket.org/eloy_garcia_pca/wallpaperdownloader/overview >> <https://bitbucket.org/eloy_garcia_pca/wallpaperdownloader/overview>). >> The applications is in the store but now I'm trying to integrate >> XFCE desktop too. I mean, now you can set any wallpaper downloaded >> directly from the GUI and it is working fine for GNOME 3, Unity >> and MATE. All three of them use gsettings interface and >> desktop-gtk3 wrapper part as you can see in the snapcraft.yaml: >> >> name: wallpaperdownloader >> version: "2.2" >> summary: Download and manage your favorite wallpapers from the Internet >> description: WallpaperDownloader is a simple GUI Java based application >> for >> downloading and managing wallpapers from the Internet >> grade: stable >> confinement: strict >> >> apps: >> wallpaperdownloader: >> command: wallpaperdownloader.sh >> plugs: [x11, network-bind, home, gsettings] >> >> parts: >> # Pulls the code from the original source (master branch) >> # desktop/gtk3 is a snapcraft part (snapcraft-desktop-helpers) >> from the Wiki: https://wiki.ubuntu.com/snapcraft/parts >> <https://wiki.ubuntu.com/snapcraft/parts> >> # It enables desktop integration and gsettings manipulation from >> the confined application >> # It is necessary to use gsettings interface (see above) in order >> to have a fully functional >> # desktop/gtk3 part >> # Github repository for snapcraft-desktop-helpers: >> https://github.com/ubuntu/snapcraft-desktop-helpers >> <https://github.com/ubuntu/snapcraft-desktop-helpers> >> wallpaperdownloader: >> plugin: maven >> source: .. >> stage-packages: >> # mate-desktop-common is necessary to have MATE gsettings schemas >> available for the application >> - mate-desktop-common >> after: [desktop/gtk3] >> >> # It will copy wallpaperdownloader script into /bin/ >> # This script contains all the commands needed (sets env >> variables, launches the jar file...) to >> # execute the application >> exec: >> plugin: dump >> source: scripts >> Now, if XFCE desktop is detected by the application, the command >> run inthe background is 'xfconf-query --channel xfce4-desktop >> --property /backdrop/screen0/monitor0/workspace0/last-image --set >> wallpaper.jpg'. If the application runs natively, there is no >> problem and the wallpaper is set properly. But when I test the >> snap package built, this is the error thrown: >> >> ERROR LinuxWallpaperChanger:188 - Property >> "/backdrop/screen0/monitor0/workspace0/last-image" does not exist >> on channel "xfce4-desktop". If a new property should be created, >> use the --create option. >> >> I have included xfconf as stage-package and the command >> xfconf-query is found within the snap. Could you give me a hint to >> solve this problem? >> >> Thank you very much for your time and your help :) > > Hey Eloy, > > I'm not a xfconf user and so can't answer to you precisly. However, > my guess is that you will need a file (like the dconf one we are > using in GNOME/Unity environment) shared between your user's > settings and the snap writable path. > The desktop launcher is creating a symlink (accessed via the home > interface) between the main user's dconf/user file to path of the > snap writable path, to be able to read the value. The gsettings > interfaces give, on its side, access to the dbus call for this. > > I wonder if the unaccessible file/dbus property could trigger this > error fallback in xfconf, and hence, prints that message. > > I hope this helps! > Cheers, > Didier > > > -- > Snapcraft mailing list > Snapcraft@lists.snapcraft.io <mailto:Snapcraft@lists.snapcraft.io> > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/snapcraft > <https://lists.ubuntu.com/mailman/listinfo/snapcraft> > > > > > -- > Eloy García Almadén -- Snapcraft mailing list Snapcraft@lists.snapcraft.io Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/snapcraft
