接入桌面壳窗口标题同步

HostBridge 契约新增 app.setTitle 方法和标题 payload

Tauri 桌面壳通过主窗口 API 同步非空窗口标题

桌面壳能力清单和配置守卫声明 app.setTitle

补充标题校验测试并更新宿主壳方案和团队共享决策记录

apps/desktop-shell/src-tauri/src/main.rs

@@ -1,6 +1,7 @@
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
 use std::sync::Mutex;
+use tauri::Manager;
 use tauri_plugin_clipboard_manager::ClipboardExt;
 use tauri_plugin_opener::OpenerExt;
 
@@ -71,6 +72,7 @@ fn capabilities() -> Vec<&'static str> {
         "share.open",
         "share.setTarget",
         "app.openExternalUrl",
+        "app.setTitle",
         "clipboard.writeText",
     ]
 }
@@ -157,6 +159,15 @@ fn normalize_external_url(raw_url: &str) -> Option<String> {
     Some(url.to_string())
 }
 
+fn normalize_window_title(raw_title: &str) -> Option<String> {
+    let title = raw_title.trim();
+    if title.is_empty() || title.chars().any(char::is_control) {
+        return None;
+    }
+
+    Some(title.chars().take(80).collect())
+}
+
 fn payload_string<'a>(value: &'a Value, field: &str) -> Option<&'a str> {
     value
         .get(field)
@@ -296,6 +307,23 @@ fn host_bridge_request(
                 Err(error) => failed(request.id, "host_error", error.to_string()),
             }
         }
+        "app.setTitle" => {
+            let title = match required_string_payload(&request, "title")
+                .ok()
+                .and_then(normalize_window_title)
+            {
+                Some(title) => title,
+                None => return failed(request.id, "invalid_request", "title is required"),
+            };
+
+            match app.get_webview_window("main") {
+                Some(window) => match window.set_title(&title) {
+                    Ok(()) => ok(request.id, json!(true)),
+                    Err(error) => failed(request.id, "host_error", error.to_string()),
+                },
+                None => failed(request.id, "host_error", "main window not found"),
+            }
+        }
         "share.setTarget" => {
             let target = request
                 .payload
@@ -381,6 +409,10 @@ mod tests {
             .as_array()
             .unwrap()
             .contains(&json!("share.setTarget")));
+        assert!(result["capabilities"]
+            .as_array()
+            .unwrap()
+            .contains(&json!("app.setTitle")));
     }
 
     #[test]
@@ -433,6 +465,25 @@ mod tests {
         assert_eq!(normalize_external_url("/relative/path"), None);
     }
 
+    #[test]
+    fn window_title_normalization_requires_visible_text() {
+        assert_eq!(
+            normalize_window_title("  Genarrative  "),
+            Some("Genarrative".to_string())
+        );
+        assert_eq!(normalize_window_title(""), None);
+        assert_eq!(normalize_window_title("Genarrative\nDev"), None);
+
+        let long_title = "甲".repeat(120);
+        assert_eq!(
+            normalize_window_title(&long_title)
+                .expect("truncated title")
+                .chars()
+                .count(),
+            80
+        );
+    }
+
     #[test]
     fn share_text_uses_direct_share_payload() {
         let state = DesktopShareState::default();

apps/desktop-shell/src-tauri/tauri.conf.json

@@ -6,7 +6,7 @@
   "build": {
     "beforeDevCommand": "npm --prefix ../.. run dev:web",
     "beforeBuildCommand": "npm --prefix ../.. run build:raw && npm run typecheck",
-    "devUrl": "http://127.0.0.1:3000/?clientRuntime=native_app&clientType=native_app&hostShell=tauri_desktop&hostPlatform=unknown&hostVersion=0.1.0&bridgeVersion=1&hostCapabilities=host.getRuntime,share.open,share.setTarget,app.openExternalUrl,clipboard.writeText",
+    "devUrl": "http://127.0.0.1:3000/?clientRuntime=native_app&clientType=native_app&hostShell=tauri_desktop&hostPlatform=unknown&hostVersion=0.1.0&bridgeVersion=1&hostCapabilities=host.getRuntime,share.open,share.setTarget,app.openExternalUrl,app.setTitle,clipboard.writeText",
     "frontendDist": "../../../dist"
   },
   "app": {
@@ -14,7 +14,7 @@
       {
         "create": false,
         "label": "main",
-        "url": "index.html?clientRuntime=native_app&clientType=native_app&hostShell=tauri_desktop&hostPlatform=unknown&hostVersion=0.1.0&bridgeVersion=1&hostCapabilities=host.getRuntime,share.open,share.setTarget,app.openExternalUrl,clipboard.writeText",
+        "url": "index.html?clientRuntime=native_app&clientType=native_app&hostShell=tauri_desktop&hostPlatform=unknown&hostVersion=0.1.0&bridgeVersion=1&hostCapabilities=host.getRuntime,share.open,share.setTarget,app.openExternalUrl,app.setTitle,clipboard.writeText",
         "title": "Genarrative",
         "width": 1280,
         "height": 820,