feat(clipboard): handle clipboard message

Cargo.toml

@@ -37,6 +37,7 @@ crossbeam-channel = "0.5"
 getopts = "0.2.17"
 surfman = { version = "0.9", features = ["chains", "sm-angle-default", "sm-raw-window-handle"] }
 winit = { version = "0.29", features = ["rwh_05"] }
+arboard = "3.4.0"
 
 [target."cfg(any(target_os = \"ios\", target_os = \"macos\"))".dependencies]
 block = "0.1"

src/window.rs

@@ -33,6 +33,8 @@ use crate::{
     Status,
 };
 
+use arboard::Clipboard;
+
 /// A Verso window is a Winit window containing several web views.
 pub struct Window {
     /// Access to Winit window with webrender context.
@@ -45,7 +47,10 @@ pub struct Window {
     webrender_gl: Rc<dyn gl::Gl>,
     /// The mouse physical position in the web view.
     mouse_position: Cell<PhysicalPosition<f64>>,
+    /// The current state of the keyboard modifiers.
     modifiers_state: Cell<ModifiersState>,
+    /// The clipboard. `None` if the platform or desktop environment is not support.
+    clipboard: Option<Clipboard>,
 }
 
 impl Window {
@@ -81,6 +86,11 @@ impl Window {
             webrender_gl,
             mouse_position: Cell::new(PhysicalPosition::default()),
             modifiers_state: Cell::new(ModifiersState::default()),
+            clipboard: Clipboard::new()
+                .map_err(|e| {
+                    log::warn!("Failed to create clipboard: {}", e);
+                })
+                .ok(),
         }
     }
 
@@ -220,6 +230,34 @@ impl Window {
     ) -> bool {
         let mut need_present = false;
         servo.get_events().into_iter().for_each(|(w, m)| {
+
+            // Window-wise events
+            match &m {
+                EmbedderMsg::GetClipboardContents(sender) => {
+                    if let Some(clipboard) = self.clipboard.as_mut() {
+                        let contents = clipboard.get_text().unwrap_or_else(|e| {
+                            log::warn!("Failed to get clipboard content: {}", e);
+                            String::new()
+                        });
+                        if let Err(e) = sender.send(contents) {
+                            log::warn!("Failed to send clipboard content: {}", e);
+                        }
+                    } else {
+                        log::trace!("Clipboard is not supported on this platform.");
+                    }
+                },
+                EmbedderMsg::SetClipboardContents(text) => {
+                    if let Some(clipboard) = self.clipboard.as_mut() {
+                        if let Err(e) = clipboard.set_text(text) {
+                            log::warn!("Failed to set clipboard contents: {}", e);
+                        }
+                    } else {
+                        log::trace!("Clipboard is not supported on this platform.");
+                    }
+                },
+                _ => ()
+            }
+
             match w {
                 // Handle message in Verso Panel
                 Some(p) if p == self.panel.id() => {