victauri-plugin 0.1.0

Tauri plugin for Victauri — embedded MCP server with full-stack introspection
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187

use tauri::{Manager, Runtime};
use victauri_core::WindowState;

/// Runtime-erased interface for webview access, allowing the MCP server to interact with Tauri windows without generic parameters.
pub trait WebviewBridge: Send + Sync {
    /// Execute JavaScript in the target webview (defaults to "main" or first visible window).
    fn eval_webview(&self, label: Option<&str>, script: &str) -> Result<(), String>;
    /// Retrieve the state of one or all windows (position, size, visibility, focus, URL).
    fn get_window_states(&self, label: Option<&str>) -> Vec<WindowState>;
    /// Return the labels of all open webview windows.
    fn list_window_labels(&self) -> Vec<String>;
    /// Return the platform-native window handle (HWND on Windows) for screenshot capture.
    fn get_native_handle(&self, label: Option<&str>) -> Result<isize, String>;
    /// Perform a window management action (minimize, maximize, close, show, hide, etc.).
    fn manage_window(&self, label: Option<&str>, action: &str) -> Result<String, String>;
    /// Set the logical size of a window in device-independent pixels.
    fn resize_window(&self, label: Option<&str>, width: u32, height: u32) -> Result<(), String>;
    /// Set the logical position of a window in device-independent pixels.
    fn move_window(&self, label: Option<&str>, x: i32, y: i32) -> Result<(), String>;
    /// Set the title bar text of a window.
    fn set_window_title(&self, label: Option<&str>, title: &str) -> Result<(), String>;
}

impl<R: Runtime> WebviewBridge for tauri::AppHandle<R> {
    fn eval_webview(&self, label: Option<&str>, script: &str) -> Result<(), String> {
        let windows = self.webview_windows();
        let webview = match label {
            Some(l) => windows
                .get(l)
                .ok_or_else(|| format!("window not found: {l}"))?,
            None => windows
                .get("main")
                .or_else(|| windows.values().find(|w| w.is_visible().unwrap_or(false)))
                .or_else(|| windows.values().next())
                .ok_or_else(|| "no webview available".to_string())?,
        };
        webview.eval(script).map_err(|e| e.to_string())
    }

    fn get_window_states(&self, label: Option<&str>) -> Vec<WindowState> {
        let windows = self.webview_windows();
        let mut states = Vec::new();

        for (win_label, window) in &windows {
            if let Some(filter) = label
                && win_label != filter
            {
                continue;
            }

            let pos = window.outer_position().unwrap_or_default();
            let size = window.inner_size().unwrap_or_default();

            states.push(WindowState {
                label: win_label.clone(),
                title: window.title().unwrap_or_default(),
                url: window.url().map(|u| u.to_string()).unwrap_or_default(),
                visible: window.is_visible().unwrap_or(false),
                focused: window.is_focused().unwrap_or(false),
                maximized: window.is_maximized().unwrap_or(false),
                minimized: window.is_minimized().unwrap_or(false),
                fullscreen: window.is_fullscreen().unwrap_or(false),
                position: (pos.x, pos.y),
                size: (size.width, size.height),
            });
        }

        states
    }

    fn list_window_labels(&self) -> Vec<String> {
        self.webview_windows().keys().cloned().collect()
    }

    fn get_native_handle(&self, label: Option<&str>) -> Result<isize, String> {
        let windows = self.webview_windows();
        let _webview = match label {
            Some(l) => windows
                .get(l)
                .ok_or_else(|| format!("window not found: {l}"))?,
            None => windows
                .get("main")
                .or_else(|| windows.values().find(|w| w.is_visible().unwrap_or(false)))
                .or_else(|| windows.values().next())
                .ok_or_else(|| "no webview available".to_string())?,
        };

        #[cfg(windows)]
        {
            use raw_window_handle::{HasWindowHandle, RawWindowHandle};
            let handle = _webview.window_handle().map_err(|e| e.to_string())?;
            match handle.as_raw() {
                RawWindowHandle::Win32(h) => Ok(h.hwnd.get()),
                _ => Err("unexpected window handle type".to_string()),
            }
        }

        #[cfg(not(windows))]
        {
            Err("native handle not yet supported on this platform".to_string())
        }
    }

    fn manage_window(&self, label: Option<&str>, action: &str) -> Result<String, String> {
        let windows = self.webview_windows();
        let window = match label {
            Some(l) => windows
                .get(l)
                .ok_or_else(|| format!("window not found: {l}"))?,
            None => windows
                .get("main")
                .or_else(|| windows.values().find(|w| w.is_visible().unwrap_or(false)))
                .or_else(|| windows.values().next())
                .ok_or_else(|| "no window available".to_string())?,
        };

        match action {
            "minimize" => window.minimize().map_err(|e| e.to_string())?,
            "unminimize" => window.unminimize().map_err(|e| e.to_string())?,
            "maximize" => window.maximize().map_err(|e| e.to_string())?,
            "unmaximize" => window.unmaximize().map_err(|e| e.to_string())?,
            "close" => window.close().map_err(|e| e.to_string())?,
            "focus" => window.set_focus().map_err(|e| e.to_string())?,
            "show" => window.show().map_err(|e| e.to_string())?,
            "hide" => window.hide().map_err(|e| e.to_string())?,
            "fullscreen" => window.set_fullscreen(true).map_err(|e| e.to_string())?,
            "unfullscreen" => window.set_fullscreen(false).map_err(|e| e.to_string())?,
            "always_on_top" => window.set_always_on_top(true).map_err(|e| e.to_string())?,
            "not_always_on_top" => window.set_always_on_top(false).map_err(|e| e.to_string())?,
            _ => return Err(format!("unknown action: {action}")),
        }

        Ok(format!("{action} executed"))
    }

    fn resize_window(&self, label: Option<&str>, width: u32, height: u32) -> Result<(), String> {
        let windows = self.webview_windows();
        let window = match label {
            Some(l) => windows
                .get(l)
                .ok_or_else(|| format!("window not found: {l}"))?,
            None => windows
                .get("main")
                .or_else(|| windows.values().find(|w| w.is_visible().unwrap_or(false)))
                .or_else(|| windows.values().next())
                .ok_or_else(|| "no window available".to_string())?,
        };

        window
            .set_size(tauri::LogicalSize::new(width, height))
            .map_err(|e| e.to_string())
    }

    fn move_window(&self, label: Option<&str>, x: i32, y: i32) -> Result<(), String> {
        let windows = self.webview_windows();
        let window = match label {
            Some(l) => windows
                .get(l)
                .ok_or_else(|| format!("window not found: {l}"))?,
            None => windows
                .get("main")
                .or_else(|| windows.values().find(|w| w.is_visible().unwrap_or(false)))
                .or_else(|| windows.values().next())
                .ok_or_else(|| "no window available".to_string())?,
        };

        window
            .set_position(tauri::LogicalPosition::new(x, y))
            .map_err(|e| e.to_string())
    }

    fn set_window_title(&self, label: Option<&str>, title: &str) -> Result<(), String> {
        let windows = self.webview_windows();
        let window = match label {
            Some(l) => windows
                .get(l)
                .ok_or_else(|| format!("window not found: {l}"))?,
            None => windows
                .get("main")
                .or_else(|| windows.values().find(|w| w.is_visible().unwrap_or(false)))
                .or_else(|| windows.values().next())
                .ok_or_else(|| "no window available".to_string())?,
        };

        window.set_title(title).map_err(|e| e.to_string())
    }
}