feat: add libxdo feature flag (#67)

* feat: add `libxdo` feature flag

* Update .changes/linux-libxdo-feature-flag.md

.changes/linux-libxdo-feature-flag.md

@@ -0,0 +1,5 @@
+---
+"muda": "minor"
+---
+
+Add `libxdo` feature flag, enabled by default, to control whether to link `libxdo` on Linux or not.

Cargo.toml

@@ -10,6 +10,10 @@ repository = "https://github.com/amrbashir/muda"
 documentation = "https://docs.rs/muda"
 categories = [ "gui" ]
 
+[features]
+default = [ "libxdo" ]
+libxdo = [ "dep:libxdo" ]
+
 [dependencies]
 crossbeam-channel = "0.5"
 keyboard-types = "0.6"
@@ -32,7 +36,7 @@ features = [
 gtk = "0.16"
 gdk = "0.16"
 gdk-pixbuf = "0.16"
-libxdo = "0.6.0"
+libxdo = { version = "0.6.0", optional = true }
 
 [target."cfg(target_os = \"macos\")".dependencies]
 cocoa = "0.24"

README.md

@@ -12,6 +12,10 @@ muda is a Menu Utilities library for Desktop Applications.
   [`TranslateAcceleratorW`](https://docs.rs/windows-sys/latest/windows_sys/Win32/UI/WindowsAndMessaging/fn.TranslateAcceleratorW.html).
   See [`Menu::init_for_hwnd`](https://docs.rs/muda/latest/muda/struct.Menu.html#method.init_for_hwnd) for more details
 
+### Cargo Features
+
+- `libxdo` (enabled by default): Enables linking to `libxdo` which is used for the predfined `Copy`, `Cut`, `Paste` and `SelectAll` menu item.
+
 ## Dependencies (Linux Only)
 
 `gtk` is used for menus and `libxdo` is used to make the predfined `Copy`, `Cut`, `Paste` and `SelectAll` menu items work. Be sure to install following packages before building:

src/platform_impl/gtk/mod.rs

@@ -946,6 +946,7 @@ impl PredefinedMenuItem {
                     .set_accel(key, mods);
                 item.connect_activate(move |_| {
                     // TODO: wayland
+                    #[cfg(feature = "libxdo")]
                     if let Ok(xdo) = libxdo::XDo::new(None) {
                         let _ = xdo.send_keysequence(predefined_item_type.xdo_keys(), 0);
                     }