Setup UI for snapshot page app install

src/snapshot_page/snapshot_page.blp

@@ -221,7 +221,11 @@ Popover more_popover {
     styles ["menu"]
     ListBox more_menu {
         Label new_snapshots {
-            label: _("New Snapshots");
+            label: _("Snapshot Apps");
+            halign: start;
+        }
+        Label install_from_snapshots {
+            label: _("Install Apps");
             halign: start;
         }
         Label apply_snapshots {

src/snapshot_page/snapshot_page.py

@@ -78,6 +78,7 @@ class SnapshotPage(Adw.BreakpointBin):
     more_menu = gtc()
     new_snapshots = gtc()
     apply_snapshots = gtc()
+    install_from_snapshots = gtc()
     trash_snapshots = gtc()
     
     # Referred to in the main window
@@ -322,8 +323,13 @@ class SnapshotPage(Adw.BreakpointBin):
         i = 0
         while row := self.more_menu.get_row_at_index(i):
             i += 1
-            if row.get_child() is self.new_snapshots:
-                row.set_visible(total_active > 0)
+            match row.get_child():
+                case self.new_snapshots:
+                    row.set_visible(total_active > 0 and total_leftover == 0)
+                case self.apply_snapshots:
+                    row.set_visible(total_active > 0 and total_leftover == 0)
+                case self.install_from_snapshots:
+                    row.set_visible(total_active == 0 and total_leftover > 0)
         
     def select_copy_handler(self, *args):
         to_copy = ""
@@ -441,6 +447,9 @@ class SnapshotPage(Adw.BreakpointBin):
         dialog.connect("response", self.on_apply_response)
         dialog.present(HostInfo.main_window)
         
+    def install_handler(self):
+        print("install")
+        
     def select_trash_handler(self):
         def on_response(dialog, response):
             to_trash = []
@@ -476,6 +485,8 @@ class SnapshotPage(Adw.BreakpointBin):
                 self.select_new_handler()
             case self.apply_snapshots:
                 self.select_apply_handler()
+            case self.install_from_snapshots:
+                self.install_handler()
             case self.trash_snapshots:
                 self.select_trash_handler()
         

src/snapshot_page/snapshots_list_page.py

@@ -18,11 +18,14 @@ class SnapshotsListPage(Adw.NavigationPage):
     new_button = gtc()
     
     def thread(self, *args):
+        is_leftover = type(self.package_or_folder) is str
         for snapshot in os.listdir(folder := f"{self.snapshots_path}{self.current_folder}/"):
             if snapshot.endswith(".json"):
                 continue
             
             row = SnapshotBox(self, snapshot, folder, self.toast_overlay)
+            row.apply_button.set_sensitive(not is_leftover)
+            row.apply_button.set_tooltip_text(_("This App is not Installed"))
             self.snapshots_rows.append(row)
             
     def callback(self, *args):