ime preedit

src/client/mod.rs

@@ -39,6 +39,7 @@ pub struct Client {
     data: ClientData,
     handle: AppHandle,
     error: Option<WidgetId<WidgetPtr>>,
+    ime: usize,
 }
 
 impl Client {
@@ -58,6 +59,7 @@ impl Client {
             username: "<unknown>".to_string(),
             clipboard: Clipboard::new().unwrap(),
             error: None,
+            ime: 0,
         };
         ui::init(&mut s);
         s
@@ -145,16 +147,22 @@ impl Client {
                     }
                 }
             }
-            WindowEvent::Ime(ime) => match ime {
+            WindowEvent::Ime(ime) => {
-                Ime::Enabled | Ime::Disabled => (),
-                Ime::Preedit(_, _) => (),
-                Ime::Commit(content) => {
                 if let Some(sel) = &self.focus {
                     let mut text = self.ui.text(sel);
+                    match ime {
+                        Ime::Enabled | Ime::Disabled => (),
+                        Ime::Preedit(content, _pos) => {
+                            // TODO: highlight once that's real
+                            text.replace(self.ime, &content);
+                            self.ime = content.chars().count();
+                        }
+                        Ime::Commit(content) => {
                             text.insert(&content);
                         }
                     }
-            },
+                }
+            }
             _ => (),
         }
         if self.ui.needs_redraw() {