Basic support for Desktop Entry source

data/gtk/preferences.blp

@@ -275,7 +275,7 @@ template $PreferencesWindow : Adw.PreferencesWindow {
           }
         }
 
-        Adw.ActionRow flatpak_import_launchers_row {
+          Adw.ActionRow flatpak_import_launchers_row {
           title: _("Import Game Launchers");
           activatable-widget: flatpak_import_launchers_switch;
 
@@ -284,6 +284,35 @@ template $PreferencesWindow : Adw.PreferencesWindow {
           }
         }
       }
+
+      Adw.ExpanderRow desktop_expander_row {
+        title: _("Desktop Files");
+        show-enable-switch: true;
+
+        Adw.ComboRow desktop_terminal_exec_row {
+          title: _("Terminal");
+          subtitle: _("Used only by games that require one to run");
+          model: StringList {
+            strings [
+            _("Custom"),
+            "xdg-terminal-exec", 
+            "GNOME Console",
+            "GNOME Terminal",
+            "Konsole",
+            "xterm"
+            ]
+          };
+          [suffix]
+          Revealer desktop_tereminal_custom_exec_revealer {
+            transition-type: slide_left;
+
+            Entry desktop_tereminal_custom_exec {
+              valign: center;
+              placeholder-text: _("Executable");
+            }
+          }
+        }
+      }
     }
   }
 

data/hu.kramo.Cartridges.gschema.xml.in

@@ -1,5 +1,15 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <schemalist gettext-domain="cartridges">
+
+  <enum id="@APP_ID@.terminals">
+    <value nick="custom" value="0"/>
+    <value nick="xdg-terminal-exec" value="1"/>
+    <value nick="kgx" value="2"/>
+    <value nick="gnome-terminal" value="3"/>
+    <value nick="konsole" value="4"/>
+    <value nick="xterm" value="5"/>
+  </enum>
+
   <schema id="@APP_ID@" path="@PREFIX@/">
     <key name="exit-after-launch" type="b">
       <default>false</default>
@@ -76,6 +86,15 @@
     <key name="retroarch-location" type="s">
       <default>"~/.var/app/org.libretro.RetroArch/config/retroarch/"</default>
     </key>
+    <key name="desktop" type="b">
+      <default>true</default>
+    </key>
+    <key name='desktop-terminal' enum='@APP_ID@.terminals'>
+      <default>"xdg-terminal-exec"</default>
+    </key>
+    <key name="desktop-terminal-custom-exec" type="s">
+      <default>""</default>
+    </key>
     <key name="flatpak" type="b">
       <default>true</default>
     </key>
@@ -98,6 +117,7 @@
       <default>false</default>
     </key>
   </schema>
+
   <schema id="@APP_ID@.State" path="@PREFIX@/State/">
     <key name="width" type="i">
       <default>1110</default>