Add character palette menu item

crates/gpui/src/app.rs

@@ -1195,6 +1195,11 @@ impl MutableAppContext {
             .set_menus(menus, &self.keystroke_matcher);
     }
 
+    fn show_character_palette(&self, window_id: usize) {
+        let (_, window) = &self.presenters_and_platform_windows[&window_id];
+        window.show_character_palette();
+    }
+
     fn prompt(
         &self,
         window_id: usize,
@@ -3489,6 +3494,10 @@ impl<'a, T: View> ViewContext<'a, T> {
         self.app.platform()
     }
 
+    pub fn show_character_palette(&self) {
+        self.app.show_character_palette(self.window_id);
+    }
+
     pub fn prompt(
         &self,
         level: PromptLevel,

crates/gpui/src/platform.rs

@@ -99,6 +99,7 @@ pub trait Window: WindowContext {
     fn activate(&self);
     fn set_title(&mut self, title: &str);
     fn set_edited(&mut self, edited: bool);
+    fn show_character_palette(&self);
 }
 
 pub trait WindowContext {

crates/gpui/src/platform/mac/event.rs

@@ -12,10 +12,19 @@ use cocoa::{
 };
 use std::{borrow::Cow, ffi::CStr, os::raw::c_char};
 
+const BACKSPACE_KEY: u16 = 0x7f;
+const SPACE_KEY: u16 = b' ' as u16;
+const ENTER_KEY: u16 = 0x0d;
+const NUMPAD_ENTER_KEY: u16 = 0x03;
+const ESCAPE_KEY: u16 = 0x1b;
+const TAB_KEY: u16 = 0x09;
+const SHIFT_TAB_KEY: u16 = 0x19;
+
 pub fn key_to_native(key: &str) -> Cow<str> {
     use cocoa::appkit::*;
     let code = match key {
-        "backspace" => 0x7F,
+        "space" => SPACE_KEY,
+        "backspace" => BACKSPACE_KEY,
         "up" => NSUpArrowFunctionKey,
         "down" => NSDownArrowFunctionKey,
         "left" => NSLeftArrowFunctionKey,
@@ -243,13 +252,6 @@ unsafe fn get_key_text(
     let mut input = None;
     let first_char = unmodified_chars.chars().next()?;
     use cocoa::appkit::*;
-    const BACKSPACE_KEY: u16 = 0x7f;
-    const ENTER_KEY: u16 = 0x0d;
-    const NUMPAD_ENTER_KEY: u16 = 0x03;
-    const ESCAPE_KEY: u16 = 0x1b;
-    const TAB_KEY: u16 = 0x09;
-    const SHIFT_TAB_KEY: u16 = 0x19;
-    const SPACE_KEY: u16 = b' ' as u16;
 
     #[allow(non_upper_case_globals)]
     let unmodified_chars = match first_char as u16 {

crates/gpui/src/platform/mac/window.rs

@@ -1,3 +1,4 @@
+use super::{geometry::RectFExt, renderer::Renderer};
 use crate::{
     executor,
     geometry::{
@@ -448,6 +449,14 @@ impl platform::Window for Window {
         // so we have to move it again.
         self.0.borrow().move_traffic_light();
     }
+
+    fn show_character_palette(&self) {
+        unsafe {
+            let app = NSApplication::sharedApplication(nil);
+            let window = self.0.borrow().native_window;
+            let _: () = msg_send![app, orderFrontCharacterPalette: window];
+        }
+    }
 }
 
 impl platform::WindowContext for Window {

crates/gpui/src/platform/test.rs

@@ -274,6 +274,8 @@ impl super::Window for Window {
     fn on_should_close(&mut self, callback: Box<dyn FnMut() -> bool>) {
         self.should_close_handler = Some(callback);
     }
+
+    fn show_character_palette(&self) {}
 }
 
 pub fn platform() -> Platform {