<div dir="ltr"><div><div><div><div><div><div><div><div>Hi Didier, hi all. </div>I've been trying to accomplish this mission but I miss something (my bet is that I need an interface similar to gsettings but it doesn't exist something like this). </div>1.- I have successfully created a symlink from /home/$USER/.config/xfce4/xfconf/xfce-perchannel-xml inside the snap directory and all the XML files in which the configuration is stored are accessible for the application. </div>2.- I have defined, as stage package, xfconf, the tool to write configurations directly into those XML files. </div>3.- But when I execute ' xfconf-query --channel xfce4-desktop --property /backdrop/screen0/monitor0/workspace0/last-image --set wallpaper.jpg' inside my application, I still receive '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.' and xfce-destop.xml (the XML which has the configuration for the background wallpaper) is not modified at all. </div>Maybe is needed an interface similar to gsettings? If this is the case, can I program something like that? </div>Thank you very much! :) </div>Best, </div>Eloy </div><div class="gmail_extra"> <div class="gmail_quote">2016-10-24 11:08 GMT+02:00 Didier Roche <<a href="mailto:didrocks@ubuntu.com" target="_blank">didrocks@ubuntu.com</a>>: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">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 <a href="https://github.com/ubuntu/snapcraft-desktop-helpers/blob/master/glib-only/launcher-specific#L37" rel="noreferrer" target="_blank">https://github.com/ubuntu/snapcraft-desktop-helpers/blob/master/glib-only/launcher-specific#L37</a> 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 <<a href="mailto:didrocks@ubuntu.com">didrocks@ubuntu.com</a> > <mailto:<a href="mailto:didrocks@ubuntu.com">didrocks@ubuntu.com</a>>>: > > 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) >> (<a href="https://bitbucket.org/eloy_garcia_pca/wallpaperdownloader/overview" rel="noreferrer" target="_blank">https://bitbucket.org/eloy_garcia_pca/wallpaperdownloader/overview</a> <<a href="https://bitbucket.org/eloy_garcia_pca/wallpaperdownloader/overview" rel="noreferrer" target="_blank">https://bitbucket.org/eloy_garcia_pca/wallpaperdownloader/overview</a>>). <div><div class="h5">>> 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: <a href="https://wiki.ubuntu.com/snapcraft/parts" rel="noreferrer" target="_blank">https://wiki.ubuntu.com/snapcraft/parts</a> >> <<a href="https://wiki.ubuntu.com/snapcraft/parts" rel="noreferrer" target="_blank">https://wiki.ubuntu.com/snapcraft/parts</a>> >> # 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: >> <a href="https://github.com/ubuntu/snapcraft-desktop-helpers" rel="noreferrer" target="_blank">https://github.com/ubuntu/snapcraft-desktop-helpers</a> >> <<a href="https://github.com/ubuntu/snapcraft-desktop-helpers" rel="noreferrer" target="_blank">https://github.com/ubuntu/snapcraft-desktop-helpers</a>> >> 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 </div></div>> <a href="mailto:Snapcraft@lists.snapcraft.io">Snapcraft@lists.snapcraft.io</a> <mailto:<a href="mailto:Snapcraft@lists.snapcraft.io">Snapcraft@lists.snapcraft.io</a>> <div class="HOEnZb"><div class="h5">> Modify settings or unsubscribe at: > <a href="https://lists.ubuntu.com/mailman/listinfo/snapcraft" rel="noreferrer" target="_blank">https://lists.ubuntu.com/mailman/listinfo/snapcraft</a> > <<a href="https://lists.ubuntu.com/mailman/listinfo/snapcraft" rel="noreferrer" target="_blank">https://lists.ubuntu.com/mailman/listinfo/snapcraft</a>> > > > > > -- > Eloy García Almadén </div></div></blockquote></div> -- <div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Eloy García Almadén </div></div> </div>