Linux: StartupWMClass is the window's app id (#1087)

* Linux: StartupWMClass is the window's app id

The desktop entry said StartupWMClass=pdfcraft, but the window carries the
app id ai.storyteller.pdfcraft (APP_ID) on Wayland and under X11 alike, so
nothing that matches a window to its launcher by that key ever matched it:
on X11 the launch's startup notification can't end when the window maps.
VectorCraft, GridCraft and WordCraft already use the app id.

A test reads the entry and compares it with APP_ID.

* Contributors: add atoslins (Atos Lins)

---------

Co-authored-by: Brandon Thomas <[email protected]>

apps/pdfcraft/src/main.rs

@@ -1173,4 +1173,13 @@ mod tests {
         }
         let _ = std::fs::remove_dir_all(&dir);
     }
+
+    /// X11 startup notification and docks match a window to its launcher by `StartupWMClass`,
+    /// so it has to be the class the window carries: the app id, on Wayland and X11 alike.
+    #[test]
+    fn the_desktop_entry_names_the_window_class() {
+        let entry = include_str!("../../../packaging/linux/ai.storyteller.pdfcraft.desktop");
+        let class = entry.lines().find_map(|line| line.strip_prefix("StartupWMClass="));
+        assert_eq!(class, Some(super::APP_ID));
+    }
 }

contributors/people.toml

@@ -79,3 +79,8 @@ sync_github_name = true
 real_name = "Bryan Mark"
 display_name = "Arcanii"
 sync_github_name = false
+
+[people.atoslins]
+real_name = "Atos Lins"
+display_name = "Atos Lins"
+sync_github_name = false

packaging/linux/ai.storyteller.pdfcraft.desktop

@@ -8,7 +8,7 @@ TryExec=pdfcraft
 Icon=ai.storyteller.pdfcraft
 Terminal=false
 StartupNotify=true
-StartupWMClass=pdfcraft
+StartupWMClass=ai.storyteller.pdfcraft
 Categories=Office;Viewer;
 Keywords=pdf;viewer;editor;annotate;sign;forms;merge;split;
 MimeType=application/pdf;