Add support for primary clipboard

winit/src/application.rs

@@ -715,6 +715,18 @@ pub fn run_command<A, C, E>(
                     clipboard.write(contents);
                 }
             },
+            command::Action::ClipboardPrimary(action) => match action {
+                clipboard::Action::Read(tag) => {
+                    let message = tag(clipboard.read_primary());
+
+                    proxy
+                        .send_event(message)
+                        .expect("Send message to event loop");
+                }
+                clipboard::Action::Write(contents) => {
+                    clipboard.write_primary(contents);
+                }
+            },
             command::Action::Window(action) => match action {
                 window::Action::Close(_id) => {
                     *should_exit = true;

winit/src/clipboard.rs

@@ -52,6 +52,32 @@ impl Clipboard {
             State::Unavailable => {}
         }
     }
+
+    /// Reads the current content of primary as text.
+    pub fn read_primary(&self) -> Option<String> {
+        match &self.state {
+            State::Connected(clipboard) => {
+                clipboard.read_primary().and_then(|r| r.ok())
+            }
+            State::Unavailable => None,
+        }
+    }
+
+    /// Writes the given text contents to primary.
+    pub fn write_primary(&mut self, contents: String) {
+        match &mut self.state {
+            State::Connected(clipboard) => {
+                match clipboard.write_primary(contents) {
+                    Some(Ok(())) => {}
+                    Some(Err(error)) => {
+                        log::warn!("error writing to primary: {error}");
+                    }
+                    None => {}
+                }
+            }
+            State::Unavailable => {}
+        }
+    }
 }
 
 impl crate::core::Clipboard for Clipboard {
@@ -62,4 +88,12 @@ impl crate::core::Clipboard for Clipboard {
     fn write(&mut self, contents: String) {
         self.write(contents);
     }
+
+    fn read_primary(&self) -> Option<String> {
+        self.read_primary()
+    }
+
+    fn write_primary(&mut self, contents: String) {
+        self.write_primary(contents);
+    }
 }

winit/src/multi_window.rs

@@ -887,6 +887,18 @@ fn run_command<A, C, E>(
                     clipboard.write(contents);
                 }
             },
+            command::Action::ClipboardPrimary(action) => match action {
+                clipboard::Action::Read(tag) => {
+                    let message = tag(clipboard.read_primary());
+
+                    proxy
+                        .send_event(message)
+                        .expect("Send message to event loop");
+                }
+                clipboard::Action::Write(contents) => {
+                    clipboard.write_primary(contents);
+                }
+            },
             command::Action::Window(action) => match action {
                 window::Action::Spawn(id, settings) => {
                     let monitor = window_manager.last_monitor();