Add backend multiwindow support

src-tauri/capabilities/default.json

@@ -3,7 +3,8 @@
   "identifier": "default",
   "description": "Capability for the main window",
   "windows": [
-    "main"
+    "main",
+    "window*"
   ],
   "permissions": [
     "core:default",

src-tauri/src/lib.rs

@@ -1,10 +1,17 @@
+use std::sync::{Arc, Mutex};
+
 use tauri_plugin_log::{Target, TargetKind};
 use log::{trace, info, debug, warn, error};
 use tracing_subscriber::EnvFilter;
 use chrono::Local;
-use tauri::Manager;
+use tauri::{Manager, WebviewUrl, WebviewWindowBuilder};
 
 
+#[derive(Default)]
+struct AppState {
+  counter: u32,
+}
+
 // Learn more about Tauri commands at https://tauri.app/develop/calling-rust/
 #[tauri::command]
 fn greet(name: &str) -> String {
@@ -32,6 +39,23 @@ fn error(msg: String) {
   error!("{}",msg);
 }
 
+#[tauri::command]
+async fn create_window(app: tauri::AppHandle) {
+    let state = app.state::<Mutex<AppState>>();
+
+    // Lock the mutex to get mutable access:
+    let mut state = state.lock().unwrap();
+    
+    // Increment the counter and generate a unique window label
+    let window_label = format!("window{}", state.counter);
+    state.counter += 1;
+    
+    // Build the new window with the unique label
+    let _webview_window = WebviewWindowBuilder::new(&app, &window_label, WebviewUrl::App("index.html".into()))
+        .build()
+        .unwrap();
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     let pkg_name = env!("CARGO_PKG_NAME").to_string();
@@ -62,7 +86,8 @@ pub fn run() {
         .plugin(tauri_plugin_dialog::init())
         .plugin(tauri_plugin_fs::init())
         .plugin(tauri_plugin_shell::init())
-        .invoke_handler(tauri::generate_handler![greet, trace, debug, info, warn, error])
+        .invoke_handler(tauri::generate_handler![greet, trace, debug, info, warn, error, create_window])
+        // .manage(window_counter)
         .setup(|app| {
           #[cfg(debug_assertions)] // only include this code on debug builds
           {
@@ -70,6 +95,9 @@ pub fn run() {
             window.open_devtools();
             window.close_devtools();
           }
+          {
+            app.manage(Mutex::new(AppState::default()));
+          }
           Ok(())
         })
         .run(tauri::generate_context!())