Create a desktop entry and some mimetype associations for xdg-open in

ubuntu-core. That way interacting with web, email and documentations urls
in a snap should do the right thing.

live-build/ubuntu-core/hooks/500-create-xdg-wrapper.binary

@@ -14,3 +14,28 @@ dbus-send --print-reply --session --dest=com.canonical.SafeLauncher / com.canoni
 EOF
 chmod 755 $PREFIX/usr/local/bin/xdg-open
 
+# corresponding .desktop entry, needed for mimetype registration
+mkdir -p $PREFIX/usr/local/share/applications
+cat >$PREFIX/usr/local/share/applications/xdg-open.desktop <<EOF
+[Desktop Entry]
+Version=1.0
+Name=Url Handler Script
+Exec=/usr/local/bin/xdg-open %u
+MimeType=x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/mailto;x-scheme-handler/help;
+Type=Application
+EOF
+
+# define xdg-open as the default handler for common types
+cat >$PREFIX/usr/local/share/applications/mimeapps.list <<EOF
+[Added Associations]
+x-scheme-handler/http=xdg-open.desktop
+x-scheme-handler/https=xdg-open.desktop
+x-scheme-handler/mailto=xdg-open.desktop
+x-scheme-handler/help=xdg-open.desktop
+
+[Default Applications]
+x-scheme-handler/http=xdg-open.desktop
+x-scheme-handler/https=xdg-open.desktop
+x-scheme-handler/mailto=xdg-open.desktop
+x-scheme-handler/help=xdg-open.desktop
+EOF