Improve x11 error texts

src/kwin_window.rs

@@ -19,14 +19,18 @@ const KWIN_SCRIPT: &str = include_str!("kwin_window.js");
 
 struct KWinScript {
     dbus_connection: Connection,
+    is_loaded: bool,
 }
 
 impl KWinScript {
     fn new(dbus_connection: Connection) -> Self {
-        KWinScript { dbus_connection }
+        KWinScript {
+            dbus_connection,
+            is_loaded: false,
+        }
     }
 
-    fn load(&self) -> Result<(), BoxedError> {
+    fn load(&mut self) -> Result<(), BoxedError> {
         let path = temp_dir().join("kwin_window.js");
         std::fs::write(&path, KWIN_SCRIPT).unwrap();
 
@@ -34,6 +38,7 @@ impl KWinScript {
             .get_registered_number(&path)
             .and_then(|number| self.start(number));
         std::fs::remove_file(&path)?;
+        self.is_loaded = true;
 
         result
     }
@@ -99,10 +104,12 @@ impl KWinScript {
 
 impl Drop for KWinScript {
     fn drop(&mut self) {
-        debug!("Unloading KWin script");
+        if self.is_loaded {
-        if let Err(e) = self.unload() {
+            debug!("Unloading KWin script");
-            error!("Problem during stopping KWin script: {e}");
+            if let Err(e) = self.unload() {
-        };
+                error!("Problem during stopping KWin script: {e}");
+            };
+        }
     }
 }
 

src/x11_connection.rs

@@ -48,13 +48,15 @@ impl X11Connection {
 
         let name = self.get_property(
             focus,
-            self.intern_atom(b"_NET_WM_NAME")?,
+            self.intern_atom("_NET_WM_NAME")?,
-            self.intern_atom(b"UTF8_STRING")?,
+            "_NET_WM_NAME",
+            self.intern_atom("UTF8_STRING")?,
             u32::MAX,
         )?;
         let class = self.get_property(
             focus,
             AtomEnum::WM_CLASS.into(),
+            "WM_CLASS",
             AtomEnum::STRING.into(),
             u32::MAX,
         )?;
@@ -71,23 +73,37 @@ impl X11Connection {
         &self,
         window: Window,
         property: Atom,
+        property_name: &str,
         property_type: Atom,
         long_length: u32,
     ) -> Result<GetPropertyReply, BoxedError> {
         self.connection
-            .get_property(false, window, property, property_type, 0, long_length)?
+            .get_property(false, window, property, property_type, 0, long_length)
+            .map_err(|e| format!("GetPropertyRequest[{property_name}] failed: {e}"))?
             .reply()
-            .map_err(std::convert::Into::into)
+            .map_err(|e| format!("GetPropertyReply[{property_name}] failed: {e}").into())
     }
 
-    fn intern_atom(&self, name: &[u8]) -> Result<Atom, BoxedError> {
+    fn intern_atom(&self, name: &str) -> Result<Atom, BoxedError> {
-        Ok(self.connection.intern_atom(false, name)?.reply()?.atom)
+        Ok(self
+            .connection
+            .intern_atom(false, name.as_bytes())
+            .map_err(|_| format!("InternAtomRequest[{name}] failed"))?
+            .reply()
+            .map_err(|_| format!("InternAtomReply[{name}] failed"))?
+            .atom)
     }
 
     fn find_active_window(&self) -> Result<Window, BoxedError> {
         let window: Atom = AtomEnum::WINDOW.into();
-        let net_active_window = self.intern_atom(b"_NET_ACTIVE_WINDOW")?;
+        let net_active_window = self.intern_atom("_NET_ACTIVE_WINDOW")?;
-        let active_window = self.get_property(self.screen_root, net_active_window, window, 1)?;
+        let active_window = self.get_property(
+            self.screen_root,
+            net_active_window,
+            "_NET_ACTIVE_WINDOW",
+            window,
+            1,
+        )?;
 
         if active_window.format == 32 && active_window.length == 1 {
             active_window

src/x11_window.rs

@@ -29,8 +29,11 @@ impl WindowWatcher {
 
 impl Watcher for WindowWatcher {
     fn new() -> Result<Self, crate::BoxedError> {
+        let connection = X11Connection::new()?;
+        connection.active_window_data()?;
+
         Ok(WindowWatcher {
-            connection: X11Connection::new()?,
+            connection,
             last_title: String::new(),
             last_app_id: String::new(),
         })