session-migration: Add session-migration for Firefox deb/snap

Author: flexiondotorg

debian/ubuntu-mate-default-settings.install

@@ -23,3 +23,4 @@ usr/share/mate/autostart/print-applet.desktop
 usr/share/mate/autostart/ubuntu-mate-settings-overlay.desktop
 usr/share/plank/themes/
 usr/share/ubuntu-mate/
+usr/share/session-migration/scripts

usr/share/session-migration/scripts/ubuntu-mate-settings-migration.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+# Migrate Firefox from deb to snap
+# https://bazaar.launchpad.net/~mozillateam/firefox/firefox.jammy/view/head:/firefox
+if [ -x /snap/bin/firefox ]; then
+    # Update default browser
+    if [ "$(xdg-settings get default-web-browser)" = "firefox.desktop" ]; then
+        xdg-settings set default-web-browser firefox_firefox.desktop
+    fi
+
+    # Migrate mate-panel launchers
+    OLD="/usr/share/applications/firefox.desktop"
+    NEW="/var/lib/snapd/desktop/applications/firefox_firefox.desktop"
+    OBJECTS=$(gsettings get org.mate.panel object-id-list 2> /dev/null)
+    for object in $OBJECTS; do
+        object=$(echo $object | cut -d\' -f2)
+        launcher=$(gsettings get org.mate.panel.object:/org/mate/panel/objects/$object/ launcher-location)
+        if [ "$launcher" = "'$OLD'" ]; then
+            gsettings set org.mate.panel.object:/org/mate/panel/objects/$object/ launcher-location "'$NEW'"
+        fi
+    done
+
+    # Migrate plank dockitems
+    if [ -e ~/.config/plank/dock1/launchers/firefox.dockitem ]; then
+        rm ~/.config/plank/dock1/launchers/firefox.dockitem
+        cp /usr/share/ubuntu-mate/settings-overlay/config/plank/dock1/launchers/firefox_firefox.dockitem ~/.config/plank/dock1/launchers/
+    fi
+fi