INIT

crates/bevy_cef_core/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "bevy_cef_core"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+repository.workspace = true
+
+[dependencies]
+bevy = { workspace = true }
+bevy_remote = { workspace = true }
+uuid = { version = "1" }
+cef = { workspace = true }
+cef-dll-sys = { workspace = true }
+serde = { workspace = true, features = ["derive"] }
+serde_json = { workspace = true }
+async-channel = { workspace = true }
+raw-window-handle = { workspace = true }
+
+[features]
+default = []
+debug = []

crates/bevy_cef_core/src/browser_process.rs

@@ -0,0 +1,18 @@
+mod app;
+mod browser_process_handler;
+mod browsers;
+mod client_handler;
+mod context_menu_handler;
+mod display_handler;
+mod localhost;
+mod renderer_handler;
+mod request_context_handler;
+
+pub use app::*;
+pub use browser_process_handler::*;
+pub use browsers::*;
+pub use client_handler::*;
+pub use context_menu_handler::*;
+pub use localhost::*;
+pub use renderer_handler::*;
+pub use request_context_handler::*;

crates/bevy_cef_core/src/browser_process/app.rs

@@ -0,0 +1,85 @@
+use crate::browser_process::browser_process_handler::BrowserProcessHandlerBuilder;
+use crate::util::{SCHEME_CEF, cef_scheme_flags};
+use cef::rc::{Rc, RcImpl};
+use cef::{
+    BrowserProcessHandler, CefString, CommandLine, ImplApp, ImplCommandLine, ImplSchemeRegistrar,
+    SchemeRegistrar, WrapApp,
+};
+use cef_dll_sys::{_cef_app_t, cef_base_ref_counted_t};
+
+/// ## Reference
+///
+/// - [`CefApp Class Reference`](https://cef-builds.spotifycdn.com/docs/106.1/classCefApp.html)
+#[derive(Default)]
+pub struct BrowserProcessAppBuilder {
+    object: *mut RcImpl<_cef_app_t, Self>,
+}
+
+impl BrowserProcessAppBuilder {
+    pub fn build() -> cef::App {
+        cef::App::new(Self {
+            object: core::ptr::null_mut(),
+        })
+    }
+}
+
+impl Clone for BrowserProcessAppBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            self.object
+        };
+        Self { object }
+    }
+}
+
+impl Rc for BrowserProcessAppBuilder {
+    fn as_base(&self) -> &cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl ImplApp for BrowserProcessAppBuilder {
+    fn on_before_command_line_processing(
+        &self,
+        _: Option<&CefString>,
+        command_line: Option<&mut CommandLine>,
+    ) {
+        let Some(command_line) = command_line else {
+            return;
+        };
+        //TODO: フラグで切り替えるようにする
+        command_line.append_switch(Some(&"use-mock-keychain".into()));
+        #[cfg(feature = "debug")]
+        {
+            command_line.append_switch(Some(&"disable-gpu".into()));
+            command_line.append_switch(Some(&"disable-gpu-compositing".into()));
+            command_line.append_switch(Some(&"disable-software-rasterizer".into()));
+        }
+    }
+
+    fn browser_process_handler(&self) -> Option<BrowserProcessHandler> {
+        Some(BrowserProcessHandlerBuilder::build())
+    }
+
+    fn on_register_custom_schemes(&self, registrar: Option<&mut SchemeRegistrar>) {
+        if let Some(registrar) = registrar {
+            registrar.add_custom_scheme(Some(&SCHEME_CEF.into()), cef_scheme_flags() as _);
+        }
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut _cef_app_t {
+        self.object as *mut cef::sys::_cef_app_t
+    }
+}
+
+impl WrapApp for BrowserProcessAppBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<_cef_app_t, Self>) {
+        self.object = object;
+    }
+}

crates/bevy_cef_core/src/browser_process/browser_process_handler.rs

@@ -0,0 +1,63 @@
+use cef::rc::{Rc, RcImpl};
+use cef::*;
+
+/// ## Reference
+///
+/// - [`CefBrowserProcessHandler Class Reference`](https://cef-builds.spotifycdn.com/docs/106.1/classCefBrowserProcessHandler.html)
+pub struct BrowserProcessHandlerBuilder {
+    object: *mut RcImpl<cef_dll_sys::cef_browser_process_handler_t, Self>,
+}
+
+impl BrowserProcessHandlerBuilder {
+    pub fn build() -> BrowserProcessHandler {
+        BrowserProcessHandler::new(Self {
+            object: core::ptr::null_mut(),
+        })
+    }
+}
+
+impl Rc for BrowserProcessHandlerBuilder {
+    fn as_base(&self) -> &cef_dll_sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl WrapBrowserProcessHandler for BrowserProcessHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<cef_dll_sys::_cef_browser_process_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Clone for BrowserProcessHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+
+        Self { object }
+    }
+}
+
+impl ImplBrowserProcessHandler for BrowserProcessHandlerBuilder {
+    fn on_before_child_process_launch(&self, command_line: Option<&mut CommandLine>) {
+        let Some(command_line) = command_line else {
+            return;
+        };
+
+        command_line.append_switch(Some(&"disable-web-security".into()));
+        command_line.append_switch(Some(&"allow-running-insecure-content".into()));
+        command_line.append_switch(Some(&"disable-session-crashed-bubble".into()));
+        command_line.append_switch(Some(&"ignore-certificate-errors".into()));
+        command_line.append_switch(Some(&"ignore-ssl-errors".into()));
+        command_line.append_switch(Some(&"enable-logging=stderr".into()));
+    }
+    #[inline]
+    fn get_raw(&self) -> *mut cef_dll_sys::_cef_browser_process_handler_t {
+        self.object.cast()
+    }
+}

crates/bevy_cef_core/src/browser_process/browsers.rs

@@ -0,0 +1,492 @@
+use crate::browser_process::BrpHandler;
+use crate::browser_process::ClientHandlerBuilder;
+use crate::browser_process::client_handler::{IpcEventRaw, JsEmitEventHandler};
+use crate::prelude::IntoString;
+use crate::prelude::*;
+use async_channel::{Sender, TryRecvError};
+use bevy::platform::collections::HashMap;
+use bevy::prelude::*;
+use bevy_remote::BrpMessage;
+use cef::{
+    Browser, BrowserHost, BrowserSettings, Client, CompositionUnderline, ImplBrowser,
+    ImplBrowserHost, ImplFrame, ImplListValue, ImplProcessMessage, ImplRequestContext,
+    MouseButtonType, ProcessId, Range, RequestContext, RequestContextSettings, WindowInfo,
+    browser_host_create_browser_sync, process_message_create,
+};
+use cef_dll_sys::{cef_event_flags_t, cef_mouse_button_type_t};
+#[allow(deprecated)]
+use raw_window_handle::RawWindowHandle;
+use std::cell::Cell;
+use std::rc::Rc;
+
+mod devtool_render_handler;
+mod keyboard;
+
+use crate::browser_process::browsers::devtool_render_handler::DevToolRenderHandlerBuilder;
+use crate::browser_process::display_handler::{DisplayHandlerBuilder, SystemCursorIconSenderInner};
+pub use keyboard::*;
+
+pub struct WebviewBrowser {
+    pub client: Browser,
+    pub host: BrowserHost,
+    pub size: SharedViewSize,
+}
+
+pub struct Browsers {
+    browsers: HashMap<Entity, WebviewBrowser>,
+    sender: TextureSender,
+    receiver: TextureReceiver,
+    ime_caret: SharedImeCaret,
+}
+
+impl Default for Browsers {
+    fn default() -> Self {
+        let (sender, receiver) = async_channel::unbounded::<RenderTexture>();
+        Browsers {
+            browsers: HashMap::default(),
+            sender,
+            receiver,
+            ime_caret: Rc::new(Cell::new(0)),
+        }
+    }
+}
+
+impl Browsers {
+    #[allow(clippy::too_many_arguments)]
+    pub fn create_browser(
+        &mut self,
+        webview: Entity,
+        uri: &str,
+        webview_size: Vec2,
+        requester: Requester,
+        ipc_event_sender: Sender<IpcEventRaw>,
+        brp_sender: Sender<BrpMessage>,
+        system_cursor_icon_sender: SystemCursorIconSenderInner,
+        window_handle: Option<RawWindowHandle>,
+    ) {
+        let mut context = Self::request_context(requester);
+        let size = Rc::new(Cell::new(webview_size));
+        let browser = browser_host_create_browser_sync(
+            Some(&WindowInfo {
+                windowless_rendering_enabled: true as _,
+                external_begin_frame_enabled: true as _,
+                parent_view: match window_handle {
+                    Some(RawWindowHandle::AppKit(handle)) => handle.ns_view.as_ptr(),
+                    Some(RawWindowHandle::Win32(handle)) => handle.hwnd.get() as _,
+                    Some(RawWindowHandle::Xlib(handle)) => handle.window as _,
+                    Some(RawWindowHandle::Wayland(handle)) => handle.surface.as_ptr(),
+                    _ => std::ptr::null_mut(),
+                },
+                // shared_texture_enabled: true as _,
+                ..Default::default()
+            }),
+            Some(&mut self.client_handler(
+                webview,
+                size.clone(),
+                ipc_event_sender,
+                brp_sender,
+                system_cursor_icon_sender,
+            )),
+            Some(&uri.into()),
+            Some(&BrowserSettings {
+                windowless_frame_rate: 60,
+                ..Default::default()
+            }),
+            None,
+            context.as_mut(),
+        )
+        .expect("Failed to create browser");
+        self.browsers.insert(
+            webview,
+            WebviewBrowser {
+                host: browser.host().expect("Failed to get browser host"),
+                client: browser,
+                size,
+            },
+        );
+    }
+
+    pub fn send_external_begin_frame(&mut self) {
+        for browser in self.browsers.values_mut() {
+            browser.host.send_external_begin_frame();
+        }
+    }
+
+    pub fn send_mouse_move<'a>(
+        &self,
+        webview: &Entity,
+        buttons: impl IntoIterator<Item = &'a MouseButton>,
+        position: Vec2,
+        mouse_leave: bool,
+    ) {
+        if let Some(browser) = self.get_focused_browser(webview) {
+            let mouse_event = cef::MouseEvent {
+                x: position.x as i32,
+                y: position.y as i32,
+                modifiers: modifiers_from_mouse_buttons(buttons),
+            };
+            browser
+                .host
+                .send_mouse_move_event(Some(&mouse_event), mouse_leave as _);
+        }
+    }
+
+    pub fn send_mouse_click(
+        &self,
+        webview: &Entity,
+        position: Vec2,
+        button: PointerButton,
+        mouse_up: bool,
+    ) {
+        if let Some(browser) = self.get_focused_browser(webview) {
+            let mouse_event = cef::MouseEvent {
+                x: position.x as i32,
+                y: position.y as i32,
+                modifiers: match button {
+                    PointerButton::Primary => cef_event_flags_t::EVENTFLAG_LEFT_MOUSE_BUTTON,
+                    PointerButton::Secondary => cef_event_flags_t::EVENTFLAG_RIGHT_MOUSE_BUTTON,
+                    PointerButton::Middle => cef_event_flags_t::EVENTFLAG_MIDDLE_MOUSE_BUTTON,
+                } as _, // No modifiers for simplicity
+            };
+            let mouse_button = match button {
+                PointerButton::Secondary => cef_mouse_button_type_t::MBT_RIGHT,
+                PointerButton::Middle => cef_mouse_button_type_t::MBT_MIDDLE,
+                _ => cef_mouse_button_type_t::MBT_LEFT,
+            };
+            browser.host.set_focus(true as _);
+            browser.host.send_mouse_click_event(
+                Some(&mouse_event),
+                MouseButtonType::from(mouse_button),
+                mouse_up as _,
+                1,
+            );
+        }
+    }
+
+    /// [`SendMouseWheelEvent`](https://cef-builds.spotifycdn.com/docs/106.1/classCefBrowserHost.html#acd5d057bd5230baa9a94b7853ba755f7)
+    pub fn send_mouse_wheel(&self, webview: &Entity, position: Vec2, delta: Vec2) {
+        if let Some(browser) = self.get_focused_browser(webview) {
+            let mouse_event = cef::MouseEvent {
+                x: position.x as i32,
+                y: position.y as i32,
+                modifiers: 0,
+            };
+            browser
+                .host
+                .send_mouse_wheel_event(Some(&mouse_event), delta.x as _, delta.y as _);
+        }
+    }
+
+    #[inline]
+    pub fn send_key(&self, webview: &Entity, event: cef::KeyEvent) {
+        if let Some(browser) = self.get_focused_browser(webview) {
+            browser.host.send_key_event(Some(&event));
+        }
+    }
+
+    pub fn emit_event(&self, webview: &Entity, id: impl Into<String>, event: &serde_json::Value) {
+        if let Some(mut process_message) =
+            process_message_create(Some(&PROCESS_MESSAGE_HOST_EMIT.into()))
+            && let Some(argument_list) = process_message.argument_list()
+            && let Some(browser) = self.browsers.get(webview)
+            && let Some(frame) = browser.client.main_frame()
+        {
+            argument_list.set_string(0, Some(&id.into().as_str().into()));
+            argument_list.set_string(1, Some(&event.to_string().as_str().into()));
+            frame.send_process_message(
+                ProcessId::from(cef_dll_sys::cef_process_id_t::PID_RENDERER),
+                Some(&mut process_message),
+            );
+        };
+    }
+
+    pub fn resize(&self, webview: &Entity, size: Vec2) {
+        if let Some(browser) = self.browsers.get(webview) {
+            browser.size.set(size);
+            browser.host.was_resized();
+        }
+    }
+
+    /// Closes the browser associated with the given webview entity.
+    ///
+    /// The browser will be removed from the hash map after closing.
+    pub fn close(&mut self, webview: &Entity) {
+        if let Some(browser) = self.browsers.remove(webview) {
+            browser.host.close_browser(true as _);
+            debug!("Closed browser with webview: {:?}", webview);
+        }
+    }
+
+    #[inline]
+    pub fn try_receive_texture(&self) -> core::result::Result<RenderTexture, TryRecvError> {
+        self.receiver.try_recv()
+    }
+
+    /// Shows the DevTools for the specified webview.
+    pub fn show_devtool(&self, webview: &Entity) {
+        let Some(browser) = self.browsers.get(webview) else {
+            return;
+        };
+        browser.host.show_dev_tools(
+            Some(&WindowInfo::default()),
+            Some(&mut ClientHandlerBuilder::new(DevToolRenderHandlerBuilder::build()).build()),
+            Some(&BrowserSettings::default()),
+            None,
+        );
+    }
+
+    /// Closes the DevTools for the specified webview.
+    pub fn close_devtools(&self, webview: &Entity) {
+        if let Some(browser) = self.browsers.get(webview) {
+            browser.host.close_dev_tools();
+        }
+    }
+
+    /// Navigate backwards.
+    ///
+    /// ## Reference
+    ///
+    /// - [`GoBack`](https://cef-builds.spotifycdn.com/docs/122.0/classCefBrowser.html#a85b02760885c070e4ad2a2705cea56cb)
+    pub fn go_back(&self, webview: &Entity) {
+        if let Some(browser) = self.browsers.get(webview)
+            && browser.client.can_go_back() == 1
+        {
+            browser.client.go_back();
+        }
+    }
+
+    /// Navigate forwards.
+    ///
+    /// ## Reference
+    ///
+    /// - [`GoForward`](https://cef-builds.spotifycdn.com/docs/122.0/classCefBrowser.html#aa8e97fc210ee0e73f16b2d98482419d0)
+    pub fn go_forward(&self, webview: &Entity) {
+        if let Some(browser) = self.browsers.get(webview)
+            && browser.client.can_go_forward() == 1
+        {
+            browser.client.go_forward();
+        }
+    }
+
+    /// Returns the current zoom level for the specified webview.
+    ///
+    /// ## Reference
+    ///
+    /// - [`GetZoomLevel`](https://cef-builds.spotifycdn.com/docs/122.0/classCefBrowserHost.html#a524d4a358287dab284c0dfec6d6d229e)
+    pub fn zoom_level(&self, webview: &Entity) -> Option<f64> {
+        self.browsers
+            .get(webview)
+            .map(|browser| browser.host.zoom_level())
+    }
+
+    /// Sets the zoom level for the specified webview.
+    ///
+    /// ## Reference
+    ///
+    /// - [`SetZoomLevel`](https://cef-builds.spotifycdn.com/docs/122.0/classCefBrowserHost.html#af2b7bf250ac78345117cd575190f2f7b)
+    pub fn set_zoom_level(&self, webview: &Entity, zoom_level: f64) {
+        if let Some(browser) = self.browsers.get(webview) {
+            browser.host.set_zoom_level(zoom_level);
+        }
+    }
+
+    /// Sets whether the audio is muted for the specified webview.
+    ///
+    /// ## Reference
+    ///
+    /// - [`SetAudioMuted`](https://cef-builds.spotifycdn.com/docs/122.0/classCefBrowserHost.html#a153d179c9ff202c8bb8869d2e9a820a2)
+    pub fn set_audio_muted(&self, webview: &Entity, muted: bool) {
+        if let Some(browser) = self.browsers.get(webview) {
+            browser.host.set_audio_muted(muted as _);
+        }
+    }
+
+    #[inline]
+    pub fn reload(&self) {
+        for browser in self.browsers.values() {
+            if let Some(frame) = browser.client.main_frame() {
+                let url = frame.url().into_string();
+                info!("Reloading browser with URL: {}", url);
+                frame.load_url(Some(&url.as_str().into()));
+            }
+        }
+    }
+
+    /// ## Reference
+    ///
+    /// - [`ImeSetComposition`](https://cef-builds.spotifycdn.com/docs/122.0/classCefBrowserHost.html#a567b41fb2d3917843ece3b57adc21ebe)
+    pub fn set_ime_composition(&self, text: &str, cursor_utf16: Option<u32>) {
+        let underlines = make_underlines_for(text, cursor_utf16.map(|i| (i, i)));
+        let i = text.encode_utf16().count();
+        let selection_range = Range {
+            from: i as _,
+            to: i as _,
+        };
+        let replacement_range = self.ime_caret_range();
+        for browser in self
+            .browsers
+            .values()
+            .filter(|b| b.client.focused_frame().is_some())
+        {
+            browser.host.ime_set_composition(
+                Some(&text.into()),
+                underlines.len(),
+                Some(&underlines[0]),
+                Some(&replacement_range),
+                Some(&selection_range),
+            );
+        }
+    }
+
+    /// ## Reference
+    ///
+    /// [`ImeSetComposition`](https://cef-builds.spotifycdn.com/docs/122.0/classCefBrowserHost.html#a567b41fb2d3917843ece3b57adc21ebe)
+    pub fn ime_finish_composition(&self, keep_selection: bool) {
+        for browser in self
+            .browsers
+            .values()
+            .filter(|b| b.client.focused_frame().is_some())
+        {
+            browser.host.ime_finish_composing_text(keep_selection as _);
+        }
+    }
+
+    pub fn set_ime_commit_text(&self, text: &str) {
+        let replacement_range = self.ime_caret_range();
+        for browser in self
+            .browsers
+            .values()
+            .filter(|b| b.client.focused_frame().is_some())
+        {
+            browser
+                .host
+                .ime_commit_text(Some(&text.into()), Some(&replacement_range), 0)
+        }
+    }
+
+    fn request_context(requester: Requester) -> Option<RequestContext> {
+        let mut context = cef::request_context_create_context(
+            Some(&RequestContextSettings::default()),
+            Some(&mut RequestContextHandlerBuilder::build()),
+        );
+        if let Some(context) = context.as_mut() {
+            context.register_scheme_handler_factory(
+                Some(&SCHEME_CEF.into()),
+                Some(&HOST_CEF.into()),
+                Some(&mut LocalSchemaHandlerBuilder::build(requester)),
+            );
+        }
+        context
+    }
+
+    fn client_handler(
+        &self,
+        webview: Entity,
+        size: SharedViewSize,
+        ipc_event_sender: Sender<IpcEventRaw>,
+        brp_sender: Sender<BrpMessage>,
+        system_cursor_icon_sender: SystemCursorIconSenderInner,
+    ) -> Client {
+        ClientHandlerBuilder::new(RenderHandlerBuilder::build(
+            webview,
+            self.sender.clone(),
+            size.clone(),
+            self.ime_caret.clone(),
+        ))
+        .with_display_handler(DisplayHandlerBuilder::build(system_cursor_icon_sender))
+        .with_message_handler(JsEmitEventHandler::new(webview, ipc_event_sender))
+        .with_message_handler(BrpHandler::new(brp_sender))
+        .build()
+    }
+
+    #[inline]
+    fn ime_caret_range(&self) -> Range {
+        let caret = self.ime_caret.get();
+        Range {
+            from: caret,
+            to: caret,
+        }
+    }
+
+    #[inline]
+    fn get_focused_browser(&self, webview: &Entity) -> Option<&WebviewBrowser> {
+        self.browsers
+            .get(webview)
+            .and_then(|b| b.client.focused_frame().is_some().then_some(b))
+    }
+}
+
+pub fn modifiers_from_mouse_buttons<'a>(buttons: impl IntoIterator<Item = &'a MouseButton>) -> u32 {
+    let mut modifiers = cef_event_flags_t::EVENTFLAG_NONE as u32;
+    for button in buttons {
+        match button {
+            MouseButton::Left => modifiers |= cef_event_flags_t::EVENTFLAG_LEFT_MOUSE_BUTTON as u32,
+            MouseButton::Right => {
+                modifiers |= cef_event_flags_t::EVENTFLAG_RIGHT_MOUSE_BUTTON as u32
+            }
+            MouseButton::Middle => {
+                modifiers |= cef_event_flags_t::EVENTFLAG_MIDDLE_MOUSE_BUTTON as u32
+            }
+            _ => {}
+        }
+    }
+    modifiers
+}
+
+pub fn make_underlines_for(
+    text: &str,
+    selection_utf16: Option<(u32, u32)>,
+) -> Vec<CompositionUnderline> {
+    let len16 = utf16_len(text);
+
+    let base = CompositionUnderline {
+        size: size_of::<CompositionUnderline>(),
+        range: Range { from: 0, to: len16 },
+        color: 0,
+        background_color: 0,
+        thick: 0,
+        style: Default::default(),
+    };
+
+    if let Some((from, to)) = selection_utf16
+        && from < to
+    {
+        let sel = CompositionUnderline {
+            size: size_of::<CompositionUnderline>(),
+            range: Range { from, to },
+            color: 0,
+            background_color: 0,
+            thick: 1,
+            style: Default::default(),
+        };
+        return vec![base, sel];
+    }
+    vec![base]
+}
+
+#[inline]
+fn utf16_len(s: &str) -> u32 {
+    s.encode_utf16().count() as u32
+}
+
+#[allow(dead_code)]
+fn utf16_index_from_byte(s: &str, byte_idx: usize) -> u32 {
+    s[..byte_idx].encode_utf16().count() as u32
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::prelude::modifiers_from_mouse_buttons;
+    use bevy::prelude::*;
+
+    #[test]
+    fn test_modifiers_from_mouse_buttons() {
+        let buttons = vec![&MouseButton::Left, &MouseButton::Right];
+        let modifiers = modifiers_from_mouse_buttons(buttons);
+        assert_eq!(
+            modifiers,
+            cef_dll_sys::cef_event_flags_t::EVENTFLAG_LEFT_MOUSE_BUTTON as u32
+                | cef_dll_sys::cef_event_flags_t::EVENTFLAG_RIGHT_MOUSE_BUTTON as u32
+        );
+    }
+}

crates/bevy_cef_core/src/browser_process/browsers/devtool_render_handler.rs

@@ -0,0 +1,57 @@
+use cef::rc::{Rc, RcImpl};
+use cef::{Browser, ImplRenderHandler, Rect, RenderHandler, WrapRenderHandler, sys};
+
+/// ## Reference
+///
+/// - [`CefRenderHandler Class Reference`](https://cef-builds.spotifycdn.com/docs/106.1/classCefRenderHandler.html)
+pub struct DevToolRenderHandlerBuilder {
+    object: *mut RcImpl<sys::cef_render_handler_t, Self>,
+}
+
+impl DevToolRenderHandlerBuilder {
+    pub fn build() -> RenderHandler {
+        RenderHandler::new(Self {
+            object: std::ptr::null_mut(),
+        })
+    }
+}
+
+impl Rc for DevToolRenderHandlerBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl WrapRenderHandler for DevToolRenderHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::_cef_render_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Clone for DevToolRenderHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self { object }
+    }
+}
+
+impl ImplRenderHandler for DevToolRenderHandlerBuilder {
+    fn view_rect(&self, _browser: Option<&mut Browser>, rect: Option<&mut Rect>) {
+        if let Some(rect) = rect {
+            rect.width = 800;
+            rect.height = 800;
+        }
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut sys::_cef_render_handler_t {
+        self.object.cast()
+    }
+}

crates/bevy_cef_core/src/browser_process/browsers/keyboard.rs

@@ -0,0 +1,979 @@
+//! ## Reference
+//!
+//! - [`cef_key_event_t`](https://cef-builds.spotifycdn.com/docs/106.1/structcef__key__event__t.html)
+//! - [KeyboardCodes](https://chromium.googlesource.com/external/Webkit/+/safari-4-branch/WebCore/platform/KeyboardCodes.h)
+
+use bevy::input::ButtonState;
+use bevy::input::keyboard::KeyboardInput;
+use bevy::prelude::{ButtonInput, KeyCode};
+use cef_dll_sys::{cef_event_flags_t, cef_key_event_t, cef_key_event_type_t};
+
+pub fn keyboard_modifiers(input: &ButtonInput<KeyCode>) -> u32 {
+    let mut flags = 0u32;
+
+    if input.pressed(KeyCode::ControlLeft) || input.pressed(KeyCode::ControlRight) {
+        flags |= cef_event_flags_t::EVENTFLAG_CONTROL_DOWN as u32;
+    }
+    if input.pressed(KeyCode::AltLeft) || input.pressed(KeyCode::AltRight) {
+        flags |= cef_event_flags_t::EVENTFLAG_ALT_DOWN as u32;
+    }
+    if input.pressed(KeyCode::ShiftLeft) || input.pressed(KeyCode::ShiftRight) {
+        flags |= cef_event_flags_t::EVENTFLAG_SHIFT_DOWN as u32;
+    }
+    if input.pressed(KeyCode::SuperLeft) || input.pressed(KeyCode::SuperRight) {
+        flags |= cef_event_flags_t::EVENTFLAG_COMMAND_DOWN as u32;
+    }
+    if input.pressed(KeyCode::CapsLock) {
+        flags |= cef_event_flags_t::EVENTFLAG_CAPS_LOCK_ON as u32;
+    }
+    if input.pressed(KeyCode::NumLock) {
+        flags |= cef_event_flags_t::EVENTFLAG_NUM_LOCK_ON as u32;
+    }
+
+    flags
+}
+
+pub fn create_cef_key_event(
+    modifiers: u32,
+    _input: &ButtonInput<KeyCode>,
+    key_event: &KeyboardInput,
+) -> Option<cef::KeyEvent> {
+    let key_type = match key_event.state {
+        // ButtonState::Pressed if input.just_pressed(key_event.key_code) => {
+        //     cef_key_event_type_t::KEYEVENT_RAWKEYDOWN
+        // }
+        ButtonState::Pressed => cef_key_event_type_t::KEYEVENT_CHAR,
+        ButtonState::Released => cef_key_event_type_t::KEYEVENT_KEYUP,
+    };
+    let windows_key_code = keycode_to_windows_vk(key_event.key_code);
+
+    let character = key_event
+        .text
+        .as_ref()
+        .and_then(|text| text.chars().next())
+        .unwrap_or('\0') as u16;
+
+    Some(cef::KeyEvent::from(cef_key_event_t {
+        size: core::mem::size_of::<cef_key_event_t>(),
+        type_: key_type,
+        modifiers,
+        windows_key_code,
+        native_key_code: to_native_key_code(&key_event.key_code) as _,
+        character,
+        unmodified_character: character,
+        is_system_key: false as _,
+        focus_on_editable_field: false as _,
+    }))
+}
+
+// fn is_not_character_key_code(keycode: &KeyCode) -> bool {
+//     match keycode {
+//         // Function keys are not character keys
+//         KeyCode::F1
+//         | KeyCode::F2
+//         | KeyCode::F3
+//         | KeyCode::F4
+//         | KeyCode::F5
+//         | KeyCode::F6
+//         | KeyCode::F7
+//         | KeyCode::F8
+//         | KeyCode::F9
+//         | KeyCode::F10
+//         | KeyCode::F11
+//         | KeyCode::F12 => true,
+//
+//         // Navigation keys are not character keys
+//         KeyCode::ArrowLeft
+//         | KeyCode::ArrowUp
+//         | KeyCode::ArrowRight
+//         | KeyCode::ArrowDown
+//         | KeyCode::Home
+//         | KeyCode::End
+//         | KeyCode::PageUp
+//         | KeyCode::PageDown => true,
+//
+//         // Modifier keys are not character keys
+//         KeyCode::ShiftLeft
+//         | KeyCode::ShiftRight
+//         | KeyCode::ControlLeft
+//         | KeyCode::ControlRight
+//         | KeyCode::AltLeft
+//         | KeyCode::AltRight
+//         | KeyCode::SuperLeft
+//         | KeyCode::SuperRight => true,
+//
+//         // Lock keys are not character keys
+//         KeyCode::CapsLock | KeyCode::NumLock | KeyCode::ScrollLock => true,
+//
+//         // Special control keys are not character keys
+//         KeyCode::Escape
+//         | KeyCode::Tab
+//         | KeyCode::Enter
+//         | KeyCode::Backspace
+//         | KeyCode::Delete
+//         | KeyCode::Insert => true,
+//
+//         // All other keys (letters, numbers, punctuation, space, numpad) are character keys
+//         _ => false,
+//     }
+// }
+
+fn keycode_to_windows_vk(keycode: KeyCode) -> i32 {
+    match keycode {
+        // Letters
+        KeyCode::KeyA => 0x41,
+        KeyCode::KeyB => 0x42,
+        KeyCode::KeyC => 0x43,
+        KeyCode::KeyD => 0x44,
+        KeyCode::KeyE => 0x45,
+        KeyCode::KeyF => 0x46,
+        KeyCode::KeyG => 0x47,
+        KeyCode::KeyH => 0x48,
+        KeyCode::KeyI => 0x49,
+        KeyCode::KeyJ => 0x4A,
+        KeyCode::KeyK => 0x4B,
+        KeyCode::KeyL => 0x4C,
+        KeyCode::KeyM => 0x4D,
+        KeyCode::KeyN => 0x4E,
+        KeyCode::KeyO => 0x4F,
+        KeyCode::KeyP => 0x50,
+        KeyCode::KeyQ => 0x51,
+        KeyCode::KeyR => 0x52,
+        KeyCode::KeyS => 0x53,
+        KeyCode::KeyT => 0x54,
+        KeyCode::KeyU => 0x55,
+        KeyCode::KeyV => 0x56,
+        KeyCode::KeyW => 0x57,
+        KeyCode::KeyX => 0x58,
+        KeyCode::KeyY => 0x59,
+        KeyCode::KeyZ => 0x5A,
+
+        // Numbers
+        KeyCode::Digit0 => 0x30,
+        KeyCode::Digit1 => 0x31,
+        KeyCode::Digit2 => 0x32,
+        KeyCode::Digit3 => 0x33,
+        KeyCode::Digit4 => 0x34,
+        KeyCode::Digit5 => 0x35,
+        KeyCode::Digit6 => 0x36,
+        KeyCode::Digit7 => 0x37,
+        KeyCode::Digit8 => 0x38,
+        KeyCode::Digit9 => 0x39,
+
+        // Function keys
+        KeyCode::F1 => 0x70,
+        KeyCode::F2 => 0x71,
+        KeyCode::F3 => 0x72,
+        KeyCode::F4 => 0x73,
+        KeyCode::F5 => 0x74,
+        KeyCode::F6 => 0x75,
+        KeyCode::F7 => 0x76,
+        KeyCode::F8 => 0x77,
+        KeyCode::F9 => 0x78,
+        KeyCode::F10 => 0x79,
+        KeyCode::F11 => 0x7A,
+        KeyCode::F12 => 0x7B,
+
+        // Special keys
+        KeyCode::Enter => 0x0D,
+        KeyCode::Space => 0x20,
+        KeyCode::Backspace => 0x08,
+        KeyCode::Delete => 0x2E,
+        KeyCode::Tab => 0x09,
+        KeyCode::Escape => 0x1B,
+        KeyCode::Insert => 0x2D,
+        KeyCode::Home => 0x24,
+        KeyCode::End => 0x23,
+        KeyCode::PageUp => 0x21,
+        KeyCode::PageDown => 0x22,
+
+        // Arrow keys
+        KeyCode::ArrowLeft => 0x25,
+        KeyCode::ArrowUp => 0x26,
+        KeyCode::ArrowRight => 0x27,
+        KeyCode::ArrowDown => 0x28,
+
+        // Modifier keys
+        KeyCode::ShiftLeft | KeyCode::ShiftRight => 0x10,
+        KeyCode::ControlLeft | KeyCode::ControlRight => 0x11,
+        KeyCode::AltLeft | KeyCode::AltRight => 0x12,
+        KeyCode::SuperLeft => 0x5B,  // Left Windows key
+        KeyCode::SuperRight => 0x5C, // Right Windows key
+
+        // Lock keys
+        KeyCode::CapsLock => 0x14,
+        KeyCode::NumLock => 0x90,
+        KeyCode::ScrollLock => 0x91,
+
+        // Punctuation
+        KeyCode::Semicolon => 0xBA,
+        KeyCode::Equal => 0xBB,
+        KeyCode::Comma => 0xBC,
+        KeyCode::Minus => 0xBD,
+        KeyCode::Period => 0xBE,
+        KeyCode::Slash => 0xBF,
+        KeyCode::Backquote => 0xC0,
+        KeyCode::BracketLeft => 0xDB,
+        KeyCode::Backslash => 0xDC,
+        KeyCode::BracketRight => 0xDD,
+        KeyCode::Quote => 0xDE,
+
+        // Numpad
+        KeyCode::Numpad0 => 0x60,
+        KeyCode::Numpad1 => 0x61,
+        KeyCode::Numpad2 => 0x62,
+        KeyCode::Numpad3 => 0x63,
+        KeyCode::Numpad4 => 0x64,
+        KeyCode::Numpad5 => 0x65,
+        KeyCode::Numpad6 => 0x66,
+        KeyCode::Numpad7 => 0x67,
+        KeyCode::Numpad8 => 0x68,
+        KeyCode::Numpad9 => 0x69,
+        KeyCode::NumpadMultiply => 0x6A,
+        KeyCode::NumpadAdd => 0x6B,
+        KeyCode::NumpadSubtract => 0x6D,
+        KeyCode::NumpadDecimal => 0x6E,
+        KeyCode::NumpadDivide => 0x6F,
+
+        // Default case for unhandled keys
+        _ => 0,
+    }
+}
+
+// fn is_special_key(keycode: &KeyCode) -> bool {
+//     matches!(
+//         keycode,
+//         KeyCode::Enter
+//             | KeyCode::Space
+//             | KeyCode::Backspace
+//             | KeyCode::Delete
+//             | KeyCode::Tab
+//             | KeyCode::Escape
+//             | KeyCode::Insert
+//             | KeyCode::Home
+//             | KeyCode::End
+//             | KeyCode::PageUp
+//             | KeyCode::PageDown
+//     )
+// }
+
+/// Native key codes for different platforms based on MDN documentation
+/// [`Keyboard_event_key_values`](https://developer.mozilla.org/en-US/docs/Web/API/UI_Events/Keyboard_event_key_values)
+fn to_native_key_code(keycode: &KeyCode) -> u32 {
+    match keycode {
+        // Letters - Platform specific native codes
+        KeyCode::KeyA => {
+            if cfg!(target_os = "macos") {
+                0x00
+            } else {
+                0x41
+            } // Linux/default
+        }
+        KeyCode::KeyB => {
+            if cfg!(target_os = "macos") {
+                0x0B
+            } else {
+                0x42
+            }
+        }
+        KeyCode::KeyC => {
+            if cfg!(target_os = "macos") {
+                0x08
+            } else {
+                0x43
+            }
+        }
+        KeyCode::KeyD => {
+            if cfg!(target_os = "macos") {
+                0x02
+            } else {
+                0x44
+            }
+        }
+        KeyCode::KeyE => {
+            if cfg!(target_os = "macos") {
+                0x0E
+            } else {
+                0x45
+            }
+        }
+        KeyCode::KeyF => {
+            if cfg!(target_os = "macos") {
+                0x03
+            } else {
+                0x46
+            }
+        }
+        KeyCode::KeyG => {
+            if cfg!(target_os = "macos") {
+                0x05
+            } else {
+                0x47
+            }
+        }
+        KeyCode::KeyH => {
+            if cfg!(target_os = "macos") {
+                0x04
+            } else {
+                0x48
+            }
+        }
+        KeyCode::KeyI => {
+            if cfg!(target_os = "macos") {
+                0x22
+            } else {
+                0x49
+            }
+        }
+        KeyCode::KeyJ => {
+            if cfg!(target_os = "macos") {
+                0x26
+            } else {
+                0x4A
+            }
+        }
+        KeyCode::KeyK => {
+            if cfg!(target_os = "macos") {
+                0x28
+            } else {
+                0x4B
+            }
+        }
+        KeyCode::KeyL => {
+            if cfg!(target_os = "macos") {
+                0x25
+            } else {
+                0x4C
+            }
+        }
+        KeyCode::KeyM => {
+            if cfg!(target_os = "macos") {
+                0x2E
+            } else {
+                0x4D
+            }
+        }
+        KeyCode::KeyN => {
+            if cfg!(target_os = "macos") {
+                0x2D
+            } else {
+                0x4E
+            }
+        }
+        KeyCode::KeyO => {
+            if cfg!(target_os = "macos") {
+                0x1F
+            } else {
+                0x4F
+            }
+        }
+        KeyCode::KeyP => {
+            if cfg!(target_os = "macos") {
+                0x23
+            } else {
+                0x50
+            }
+        }
+        KeyCode::KeyQ => {
+            if cfg!(target_os = "macos") {
+                0x0C
+            } else {
+                0x51
+            }
+        }
+        KeyCode::KeyR => {
+            if cfg!(target_os = "macos") {
+                0x0F
+            } else {
+                0x52
+            }
+        }
+        KeyCode::KeyS => {
+            if cfg!(target_os = "macos") {
+                0x01
+            } else {
+                0x53
+            }
+        }
+        KeyCode::KeyT => {
+            if cfg!(target_os = "macos") {
+                0x11
+            } else {
+                0x54
+            }
+        }
+        KeyCode::KeyU => {
+            if cfg!(target_os = "macos") {
+                0x20
+            } else {
+                0x55
+            }
+        }
+        KeyCode::KeyV => {
+            if cfg!(target_os = "macos") {
+                0x09
+            } else {
+                0x56
+            }
+        }
+        KeyCode::KeyW => {
+            if cfg!(target_os = "macos") {
+                0x0D
+            } else {
+                0x57
+            }
+        }
+        KeyCode::KeyX => {
+            if cfg!(target_os = "macos") {
+                0x07
+            } else {
+                0x58
+            }
+        }
+        KeyCode::KeyY => {
+            if cfg!(target_os = "macos") {
+                0x10
+            } else {
+                0x59
+            }
+        }
+        KeyCode::KeyZ => {
+            if cfg!(target_os = "macos") {
+                0x06
+            } else {
+                0x5A
+            }
+        }
+
+        // Numbers
+        KeyCode::Digit0 => {
+            if cfg!(target_os = "macos") {
+                0x1D
+            } else {
+                0x30
+            }
+        }
+        KeyCode::Digit1 => {
+            if cfg!(target_os = "macos") {
+                0x12
+            } else {
+                0x31
+            }
+        }
+        KeyCode::Digit2 => {
+            if cfg!(target_os = "macos") {
+                0x13
+            } else {
+                0x32
+            }
+        }
+        KeyCode::Digit3 => {
+            if cfg!(target_os = "macos") {
+                0x14
+            } else {
+                0x33
+            }
+        }
+        KeyCode::Digit4 => {
+            if cfg!(target_os = "macos") {
+                0x15
+            } else {
+                0x34
+            }
+        }
+        KeyCode::Digit5 => {
+            if cfg!(target_os = "macos") {
+                0x17
+            } else {
+                0x35
+            }
+        }
+        KeyCode::Digit6 => {
+            if cfg!(target_os = "macos") {
+                0x16
+            } else {
+                0x36
+            }
+        }
+        KeyCode::Digit7 => {
+            if cfg!(target_os = "macos") {
+                0x1A
+            } else {
+                0x37
+            }
+        }
+        KeyCode::Digit8 => {
+            if cfg!(target_os = "macos") {
+                0x1C
+            } else {
+                0x38
+            }
+        }
+        KeyCode::Digit9 => {
+            if cfg!(target_os = "macos") {
+                0x19
+            } else {
+                0x39
+            }
+        }
+
+        // Function keys
+        KeyCode::F1 => {
+            if cfg!(target_os = "macos") {
+                0x7A
+            } else {
+                0x70
+            }
+        }
+        KeyCode::F2 => {
+            if cfg!(target_os = "macos") {
+                0x78
+            } else {
+                0x71
+            }
+        }
+        KeyCode::F3 => {
+            if cfg!(target_os = "macos") {
+                0x63
+            } else {
+                0x72
+            }
+        }
+        KeyCode::F4 => {
+            if cfg!(target_os = "macos") {
+                0x76
+            } else {
+                0x73
+            }
+        }
+        KeyCode::F5 => {
+            if cfg!(target_os = "macos") {
+                0x60
+            } else {
+                0x74
+            }
+        }
+        KeyCode::F6 => {
+            if cfg!(target_os = "macos") {
+                0x61
+            } else {
+                0x75
+            }
+        }
+        KeyCode::F7 => {
+            if cfg!(target_os = "macos") {
+                0x62
+            } else {
+                0x76
+            }
+        }
+        KeyCode::F8 => {
+            if cfg!(target_os = "macos") {
+                0x64
+            } else {
+                0x77
+            }
+        }
+        KeyCode::F9 => {
+            if cfg!(target_os = "macos") {
+                0x65
+            } else {
+                0x78
+            }
+        }
+        KeyCode::F10 => {
+            if cfg!(target_os = "macos") {
+                0x6D
+            } else {
+                0x79
+            }
+        }
+        KeyCode::F11 => {
+            if cfg!(target_os = "macos") {
+                0x67
+            } else {
+                0x7A
+            }
+        }
+        KeyCode::F12 => {
+            if cfg!(target_os = "macos") {
+                0x6F
+            } else {
+                0x7B
+            }
+        }
+
+        // Special keys
+        KeyCode::Enter => {
+            if cfg!(target_os = "macos") {
+                0x24
+            } else {
+                0x0D
+            }
+        }
+        KeyCode::Space => {
+            if cfg!(target_os = "macos") {
+                0x31
+            } else {
+                0x20
+            }
+        }
+        KeyCode::Backspace => {
+            if cfg!(target_os = "macos") {
+                0x33
+            } else {
+                0x08
+            }
+        }
+        KeyCode::Delete => {
+            if cfg!(target_os = "macos") {
+                0x75
+            } else {
+                0x2E
+            }
+        }
+        KeyCode::Tab => {
+            if cfg!(target_os = "macos") {
+                0x30
+            } else {
+                0x09
+            }
+        }
+        KeyCode::Escape => {
+            if cfg!(target_os = "macos") {
+                0x35
+            } else {
+                0x1B
+            }
+        }
+        KeyCode::Insert => {
+            if cfg!(target_os = "macos") {
+                0x72
+            } else {
+                0x2D
+            }
+        }
+        KeyCode::Home => {
+            if cfg!(target_os = "macos") {
+                0x73
+            } else {
+                0x24
+            }
+        }
+        KeyCode::End => {
+            if cfg!(target_os = "macos") {
+                0x77
+            } else {
+                0x23
+            }
+        }
+        KeyCode::PageUp => {
+            if cfg!(target_os = "macos") {
+                0x74
+            } else {
+                0x21
+            }
+        }
+        KeyCode::PageDown => {
+            if cfg!(target_os = "macos") {
+                0x79
+            } else {
+                0x22
+            }
+        }
+
+        // Arrow keys
+        KeyCode::ArrowLeft => {
+            if cfg!(target_os = "macos") {
+                0x7B
+            } else {
+                0x25
+            }
+        }
+        KeyCode::ArrowUp => {
+            if cfg!(target_os = "macos") {
+                0x7E
+            } else {
+                0x26
+            }
+        }
+        KeyCode::ArrowRight => {
+            if cfg!(target_os = "macos") {
+                0x7C
+            } else {
+                0x27
+            }
+        }
+        KeyCode::ArrowDown => {
+            if cfg!(target_os = "macos") {
+                0x7D
+            } else {
+                0x28
+            }
+        }
+
+        // Modifier keys
+        KeyCode::ShiftLeft => {
+            if cfg!(target_os = "macos") {
+                0x38
+            } else {
+                0xA0
+            }
+        }
+        KeyCode::ShiftRight => {
+            if cfg!(target_os = "macos") {
+                0x3C
+            } else {
+                0xA1
+            }
+        }
+        KeyCode::ControlLeft => {
+            if cfg!(target_os = "macos") {
+                0x3B
+            } else {
+                0xA2
+            }
+        }
+        KeyCode::ControlRight => {
+            if cfg!(target_os = "macos") {
+                0x3E
+            } else {
+                0xA3
+            }
+        }
+        KeyCode::AltLeft => {
+            if cfg!(target_os = "macos") {
+                0x3A
+            } else {
+                0xA4
+            }
+        }
+        KeyCode::AltRight => {
+            if cfg!(target_os = "macos") {
+                0x3D
+            } else {
+                0xA5
+            }
+        }
+        KeyCode::SuperLeft => {
+            if cfg!(target_os = "macos") {
+                0x37
+            } else {
+                0x5B
+            }
+        }
+        KeyCode::SuperRight => {
+            if cfg!(target_os = "macos") {
+                0x36
+            } else {
+                0x5C
+            }
+        }
+
+        // Lock keys
+        KeyCode::CapsLock => {
+            if cfg!(target_os = "macos") {
+                0x39
+            } else {
+                0x14
+            }
+        }
+        KeyCode::NumLock => {
+            if cfg!(target_os = "macos") {
+                0x47
+            } else {
+                0x90
+            }
+        }
+        KeyCode::ScrollLock => 0x91,
+
+        // Punctuation
+        KeyCode::Semicolon => {
+            if cfg!(target_os = "macos") {
+                0x29
+            } else {
+                0xBA
+            }
+        }
+        KeyCode::Equal => {
+            if cfg!(target_os = "macos") {
+                0x18
+            } else {
+                0xBB
+            }
+        }
+        KeyCode::Comma => {
+            if cfg!(target_os = "macos") {
+                0x2B
+            } else {
+                0xBC
+            }
+        }
+        KeyCode::Minus => {
+            if cfg!(target_os = "macos") {
+                0x1B
+            } else {
+                0xBD
+            }
+        }
+        KeyCode::Period => {
+            if cfg!(target_os = "macos") {
+                0x2F
+            } else {
+                0xBE
+            }
+        }
+        KeyCode::Slash => {
+            if cfg!(target_os = "macos") {
+                0x2C
+            } else {
+                0xBF
+            }
+        }
+        KeyCode::Backquote => {
+            if cfg!(target_os = "macos") {
+                0x32
+            } else {
+                0xC0
+            }
+        }
+        KeyCode::BracketLeft => {
+            if cfg!(target_os = "macos") {
+                0x21
+            } else {
+                0xDB
+            }
+        }
+        KeyCode::Backslash => {
+            if cfg!(target_os = "macos") {
+                0x2A
+            } else {
+                0xDC
+            }
+        }
+        KeyCode::BracketRight => {
+            if cfg!(target_os = "macos") {
+                0x1E
+            } else {
+                0xDD
+            }
+        }
+        KeyCode::Quote => {
+            if cfg!(target_os = "macos") {
+                0x27
+            } else {
+                0xDE
+            }
+        }
+
+        // Numpad
+        KeyCode::Numpad0 => {
+            if cfg!(target_os = "macos") {
+                0x52
+            } else {
+                0x60
+            }
+        }
+        KeyCode::Numpad1 => {
+            if cfg!(target_os = "macos") {
+                0x53
+            } else {
+                0x61
+            }
+        }
+        KeyCode::Numpad2 => {
+            if cfg!(target_os = "macos") {
+                0x54
+            } else {
+                0x62
+            }
+        }
+        KeyCode::Numpad3 => {
+            if cfg!(target_os = "macos") {
+                0x55
+            } else {
+                0x63
+            }
+        }
+        KeyCode::Numpad4 => {
+            if cfg!(target_os = "macos") {
+                0x56
+            } else {
+                0x64
+            }
+        }
+        KeyCode::Numpad5 => {
+            if cfg!(target_os = "macos") {
+                0x57
+            } else {
+                0x65
+            }
+        }
+        KeyCode::Numpad6 => {
+            if cfg!(target_os = "macos") {
+                0x58
+            } else {
+                0x66
+            }
+        }
+        KeyCode::Numpad7 => {
+            if cfg!(target_os = "macos") {
+                0x59
+            } else {
+                0x67
+            }
+        }
+        KeyCode::Numpad8 => {
+            if cfg!(target_os = "macos") {
+                0x5B
+            } else {
+                0x68
+            }
+        }
+        KeyCode::Numpad9 => {
+            if cfg!(target_os = "macos") {
+                0x5C
+            } else {
+                0x69
+            }
+        }
+        KeyCode::NumpadMultiply => {
+            if cfg!(target_os = "macos") {
+                0x43
+            } else {
+                0x6A
+            }
+        }
+        KeyCode::NumpadAdd => {
+            if cfg!(target_os = "macos") {
+                0x45
+            } else {
+                0x6B
+            }
+        }
+        KeyCode::NumpadSubtract => {
+            if cfg!(target_os = "macos") {
+                0x4E
+            } else {
+                0x6D
+            }
+        }
+        KeyCode::NumpadDecimal => {
+            if cfg!(target_os = "macos") {
+                0x41
+            } else {
+                0x6E
+            }
+        }
+        KeyCode::NumpadDivide => {
+            if cfg!(target_os = "macos") {
+                0x4B
+            } else {
+                0x6F
+            }
+        }
+
+        // Default case for unhandled keys
+        _ => 0,
+    }
+}

crates/bevy_cef_core/src/browser_process/client_handler.rs

@@ -0,0 +1,129 @@
+mod brp_handler;
+mod js_emit_event_handler;
+
+use crate::browser_process::ContextMenuHandlerBuilder;
+use crate::prelude::IntoString;
+use cef::rc::{Rc, RcImpl};
+use cef::{
+    Browser, Client, ContextMenuHandler, DisplayHandler, Frame, ImplClient, ImplProcessMessage,
+    ListValue, ProcessId, ProcessMessage, RenderHandler, WrapClient, sys,
+};
+use std::os::raw::c_int;
+
+pub use brp_handler::BrpHandler;
+pub use js_emit_event_handler::{IpcEventRaw, JsEmitEventHandler};
+
+pub trait ProcessMessageHandler {
+    fn process_name(&self) -> &'static str;
+
+    fn handle_message(&self, browser: &mut Browser, frame: &mut Frame, args: Option<ListValue>);
+}
+
+/// ## Reference
+///
+/// - [`CefBrowser Class Reference`](https://cef-builds.spotifycdn.com/docs/106.1/classCefBrowser.html)
+pub struct ClientHandlerBuilder {
+    object: *mut RcImpl<sys::cef_client_t, Self>,
+    render_handler: RenderHandler,
+    context_menu_handler: ContextMenuHandler,
+    message_handlers: Vec<std::rc::Rc<dyn ProcessMessageHandler>>,
+    display_handler: Option<DisplayHandler>,
+}
+
+impl ClientHandlerBuilder {
+    pub fn new(render_handler: RenderHandler) -> Self {
+        Self {
+            object: std::ptr::null_mut(),
+            render_handler,
+            context_menu_handler: ContextMenuHandlerBuilder::build(),
+            message_handlers: Vec::new(),
+            display_handler: None,
+        }
+    }
+
+    pub fn with_display_handler(mut self, display_handler: DisplayHandler) -> Self {
+        self.display_handler = Some(display_handler);
+        self
+    }
+
+    pub fn with_message_handler(mut self, handler: impl ProcessMessageHandler + 'static) -> Self {
+        self.message_handlers.push(std::rc::Rc::new(handler));
+        self
+    }
+
+    pub fn build(self) -> Client {
+        Client::new(self)
+    }
+}
+
+impl Rc for ClientHandlerBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl WrapClient for ClientHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::cef_client_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Clone for ClientHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+
+        Self {
+            object,
+            render_handler: self.render_handler.clone(),
+            context_menu_handler: self.context_menu_handler.clone(),
+            message_handlers: self.message_handlers.clone(),
+            display_handler: self.display_handler.clone(),
+        }
+    }
+}
+
+impl ImplClient for ClientHandlerBuilder {
+    fn render_handler(&self) -> Option<RenderHandler> {
+        Some(self.render_handler.clone())
+    }
+
+    fn display_handler(&self) -> Option<DisplayHandler> {
+        self.display_handler.clone()
+    }
+
+    fn on_process_message_received(
+        &self,
+        browser: Option<&mut Browser>,
+        frame: Option<&mut Frame>,
+        _: ProcessId,
+        message: Option<&mut ProcessMessage>,
+    ) -> c_int {
+        if let Some(message) = message
+            && let Some(browser) = browser
+            && let Some(frame) = frame
+            && let Some(name) = Some(message.name().into_string())
+            && let Some(handler) = self
+                .message_handlers
+                .iter()
+                .find(|h| h.process_name() == name.as_str())
+        {
+            {
+                let args = message.argument_list();
+                handler.handle_message(browser, frame, args);
+            }
+        };
+        1
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut sys::_cef_client_t {
+        self.object.cast()
+    }
+}

crates/bevy_cef_core/src/browser_process/client_handler/brp_handler.rs

@@ -0,0 +1,68 @@
+use crate::browser_process::client_handler::ProcessMessageHandler;
+use crate::prelude::PROCESS_MESSAGE_BRP;
+use crate::util::IntoString;
+use async_channel::Sender;
+use bevy::tasks::IoTaskPool;
+use bevy_remote::{BrpMessage, BrpRequest};
+use cef::{
+    Browser, Frame, ImplFrame, ImplListValue, ImplProcessMessage, ListValue, ProcessId,
+    process_message_create,
+};
+use cef_dll_sys::cef_process_id_t;
+
+pub struct BrpHandler {
+    sender: Sender<BrpMessage>,
+}
+
+impl BrpHandler {
+    pub const fn new(sender: Sender<BrpMessage>) -> Self {
+        Self { sender }
+    }
+}
+
+impl ProcessMessageHandler for BrpHandler {
+    fn process_name(&self) -> &'static str {
+        PROCESS_MESSAGE_BRP
+    }
+
+    fn handle_message(&self, _browser: &mut Browser, frame: &mut Frame, args: Option<ListValue>) {
+        if let Some(args) = args
+            && let Ok(request) = serde_json::from_str::<BrpRequest>(&args.string(1).into_string())
+        {
+            let id = args.string(0).into_string();
+            let frame = frame.clone();
+            let brp_sender = self.sender.clone();
+            IoTaskPool::get()
+                .spawn(async move {
+                    let (tx, rx) = async_channel::unbounded();
+                    if brp_sender
+                        .send(BrpMessage {
+                            method: request.method,
+                            params: request.params,
+                            sender: tx,
+                        })
+                        .await
+                        .is_err()
+                    {
+                        return;
+                    }
+                    if let Ok(result) = rx.recv().await
+                        && let Some(mut message) =
+                            process_message_create(Some(&PROCESS_MESSAGE_BRP.into()))
+                        && let Some(argument_list) = message.argument_list()
+                    {
+                        argument_list.set_string(0, Some(&id.as_str().into()));
+                        argument_list.set_string(
+                            1,
+                            Some(&serde_json::to_string(&result).unwrap().as_str().into()),
+                        );
+                        frame.send_process_message(
+                            ProcessId::from(cef_process_id_t::PID_RENDERER),
+                            Some(&mut message),
+                        );
+                    }
+                })
+                .detach();
+        }
+    }
+}

crates/bevy_cef_core/src/browser_process/client_handler/js_emit_event_handler.rs

@@ -0,0 +1,39 @@
+use crate::browser_process::client_handler::ProcessMessageHandler;
+use crate::prelude::{IntoString, PROCESS_MESSAGE_JS_EMIT};
+use async_channel::Sender;
+use bevy::prelude::Entity;
+use cef::{Browser, Frame, ImplListValue, ListValue};
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
+pub struct IpcEventRaw {
+    pub webview: Entity,
+    pub payload: String,
+}
+
+pub struct JsEmitEventHandler {
+    webview: Entity,
+    sender: Sender<IpcEventRaw>,
+}
+
+impl JsEmitEventHandler {
+    pub const fn new(webview: Entity, sender: Sender<IpcEventRaw>) -> Self {
+        Self { sender, webview }
+    }
+}
+
+impl ProcessMessageHandler for JsEmitEventHandler {
+    fn process_name(&self) -> &'static str {
+        PROCESS_MESSAGE_JS_EMIT
+    }
+
+    fn handle_message(&self, _browser: &mut Browser, _frame: &mut Frame, args: Option<ListValue>) {
+        if let Some(args) = args {
+            let event = IpcEventRaw {
+                webview: self.webview, // Placeholder, should be set correctly
+                payload: args.string(0).into_string(),
+            };
+            let _ = self.sender.send_blocking(event);
+        }
+    }
+}

crates/bevy_cef_core/src/browser_process/context_menu_handler.rs

@@ -0,0 +1,50 @@
+use cef::rc::{Rc, RcImpl};
+use cef::{ImplContextMenuHandler, WrapContextMenuHandler, sys};
+
+/// ## Reference
+///
+/// - [`CefContextMenuHandler Class Reference`](https://cef-builds.spotifycdn.com/docs/106.1/classCefContextMenuHandler.html)
+pub struct ContextMenuHandlerBuilder {
+    object: *mut RcImpl<sys::_cef_context_menu_handler_t, Self>,
+}
+
+impl ContextMenuHandlerBuilder {
+    pub fn build() -> cef::ContextMenuHandler {
+        cef::ContextMenuHandler::new(Self {
+            object: core::ptr::null_mut(),
+        })
+    }
+}
+
+impl WrapContextMenuHandler for ContextMenuHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::_cef_context_menu_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Rc for ContextMenuHandlerBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            core::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl Clone for ContextMenuHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self { object }
+    }
+}
+
+impl ImplContextMenuHandler for ContextMenuHandlerBuilder {
+    #[inline]
+    fn get_raw(&self) -> *mut sys::cef_context_menu_handler_t {
+        self.object as *mut sys::cef_context_menu_handler_t
+    }
+}

crates/bevy_cef_core/src/browser_process/display_handler.rs

@@ -0,0 +1,165 @@
+use async_channel::Sender;
+use bevy::log::{error, info, trace, warn};
+use bevy::window::SystemCursorIcon;
+use cef::rc::{ConvertParam, Rc, RcImpl};
+use cef::{
+    Browser, CefString, CursorInfo, CursorType, ImplDisplayHandler, LogSeverity,
+    WrapDisplayHandler, sys,
+};
+use cef_dll_sys::{cef_cursor_type_t, cef_log_severity_t};
+use std::os::raw::c_int;
+
+pub type SystemCursorIconSenderInner = Sender<SystemCursorIcon>;
+
+/// ## Reference
+///
+/// - [`CefDisplayHandler Class Reference`](https://cef-builds.spotifycdn.com/docs/112.3/classCefDisplayHandler.html#af1cc8410a0b1a97166923428d3794636)
+pub struct DisplayHandlerBuilder {
+    object: *mut RcImpl<sys::cef_display_handler_t, Self>,
+    cursor_icon: SystemCursorIconSenderInner,
+}
+
+impl DisplayHandlerBuilder {
+    pub fn build(cursor_icon: SystemCursorIconSenderInner) -> cef::DisplayHandler {
+        cef::DisplayHandler::new(Self {
+            object: core::ptr::null_mut(),
+            cursor_icon,
+        })
+    }
+}
+
+impl Rc for DisplayHandlerBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            core::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl Clone for DisplayHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self {
+            object,
+            cursor_icon: self.cursor_icon.clone(),
+        }
+    }
+}
+
+impl WrapDisplayHandler for DisplayHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::cef_display_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl ImplDisplayHandler for DisplayHandlerBuilder {
+    fn on_console_message(
+        &self,
+        _: Option<&mut Browser>,
+        level: LogSeverity,
+        message: Option<&CefString>,
+        source: Option<&CefString>,
+        line: c_int,
+    ) -> c_int {
+        let message = format!(
+            "{}\nline:{line}\n{}",
+            source.map(|s| s.to_string()).unwrap_or_default(),
+            message.map(|m| m.to_string()).unwrap_or_default()
+        );
+        match level.into_raw() {
+            cef_log_severity_t::LOGSEVERITY_ERROR => {
+                error!("{message}");
+            }
+            cef_log_severity_t::LOGSEVERITY_WARNING => {
+                warn!("{message}");
+            }
+            cef_log_severity_t::LOGSEVERITY_VERBOSE => {
+                trace!("{message}");
+            }
+            _ => {
+                info!("{message}");
+            }
+        }
+        1
+    }
+
+    fn on_cursor_change(
+        &self,
+        _browser: Option<&mut Browser>,
+        _cursor: *mut u8,
+        type_: CursorType,
+        _: Option<&CursorInfo>,
+    ) -> c_int {
+        let _ = self
+            .cursor_icon
+            .send_blocking(to_system_cursor_icon(type_.into_raw()));
+        1
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut sys::cef_display_handler_t {
+        self.object.cast()
+    }
+}
+
+pub fn to_system_cursor_icon(cursor_type: cef_dll_sys::cef_cursor_type_t) -> SystemCursorIcon {
+    match cursor_type {
+        cef_cursor_type_t::CT_POINTER => SystemCursorIcon::Default,
+        cef_cursor_type_t::CT_CROSS => SystemCursorIcon::Crosshair,
+        cef_cursor_type_t::CT_HAND => SystemCursorIcon::Pointer,
+        cef_cursor_type_t::CT_IBEAM => SystemCursorIcon::Text,
+        cef_cursor_type_t::CT_WAIT => SystemCursorIcon::Wait,
+        cef_cursor_type_t::CT_HELP => SystemCursorIcon::Help,
+        cef_cursor_type_t::CT_EASTRESIZE => SystemCursorIcon::EResize,
+        cef_cursor_type_t::CT_NORTHRESIZE => SystemCursorIcon::NResize,
+        cef_cursor_type_t::CT_NORTHEASTRESIZE => SystemCursorIcon::NeResize,
+        cef_cursor_type_t::CT_NORTHWESTRESIZE => SystemCursorIcon::NwResize,
+        cef_cursor_type_t::CT_SOUTHRESIZE => SystemCursorIcon::SResize,
+        cef_cursor_type_t::CT_SOUTHEASTRESIZE => SystemCursorIcon::SeResize,
+        cef_cursor_type_t::CT_SOUTHWESTRESIZE => SystemCursorIcon::SwResize,
+        cef_cursor_type_t::CT_WESTRESIZE => SystemCursorIcon::WResize,
+        cef_cursor_type_t::CT_NORTHSOUTHRESIZE => SystemCursorIcon::NsResize,
+        cef_cursor_type_t::CT_EASTWESTRESIZE => SystemCursorIcon::EwResize,
+        cef_cursor_type_t::CT_NORTHEASTSOUTHWESTRESIZE => SystemCursorIcon::NeswResize,
+        cef_cursor_type_t::CT_NORTHWESTSOUTHEASTRESIZE => SystemCursorIcon::NwseResize,
+        cef_cursor_type_t::CT_COLUMNRESIZE => SystemCursorIcon::ColResize,
+        cef_cursor_type_t::CT_ROWRESIZE => SystemCursorIcon::RowResize,
+        cef_cursor_type_t::CT_MIDDLEPANNING => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_EASTPANNING => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_NORTHPANNING => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_NORTHEASTPANNING => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_NORTHWESTPANNING => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_SOUTHPANNING => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_SOUTHEASTPANNING => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_SOUTHWESTPANNING => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_WESTPANNING => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_MOVE => SystemCursorIcon::Move,
+        cef_cursor_type_t::CT_VERTICALTEXT => SystemCursorIcon::VerticalText,
+        cef_cursor_type_t::CT_CELL => SystemCursorIcon::Cell,
+        cef_cursor_type_t::CT_CONTEXTMENU => SystemCursorIcon::ContextMenu,
+        cef_cursor_type_t::CT_ALIAS => SystemCursorIcon::Alias,
+        cef_cursor_type_t::CT_PROGRESS => SystemCursorIcon::Progress,
+        cef_cursor_type_t::CT_NODROP => SystemCursorIcon::NoDrop,
+        cef_cursor_type_t::CT_COPY => SystemCursorIcon::Copy,
+        cef_cursor_type_t::CT_NONE => SystemCursorIcon::Default,
+        cef_cursor_type_t::CT_NOTALLOWED => SystemCursorIcon::NotAllowed,
+        cef_cursor_type_t::CT_ZOOMIN => SystemCursorIcon::ZoomIn,
+        cef_cursor_type_t::CT_ZOOMOUT => SystemCursorIcon::ZoomOut,
+        cef_cursor_type_t::CT_GRAB => SystemCursorIcon::Grab,
+        cef_cursor_type_t::CT_GRABBING => SystemCursorIcon::Grabbing,
+        cef_cursor_type_t::CT_MIDDLE_PANNING_VERTICAL => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_MIDDLE_PANNING_HORIZONTAL => SystemCursorIcon::AllScroll,
+        cef_cursor_type_t::CT_CUSTOM => SystemCursorIcon::Default,
+        cef_cursor_type_t::CT_DND_NONE => SystemCursorIcon::Default,
+        cef_cursor_type_t::CT_DND_MOVE => SystemCursorIcon::Move,
+        cef_cursor_type_t::CT_DND_COPY => SystemCursorIcon::Copy,
+        cef_cursor_type_t::CT_DND_LINK => SystemCursorIcon::Alias,
+        cef_cursor_type_t::CT_NUM_VALUES => SystemCursorIcon::Default,
+        _ => SystemCursorIcon::Default,
+    }
+}

crates/bevy_cef_core/src/browser_process/localhost.rs

@@ -0,0 +1,281 @@
+mod data_responser;
+mod headers_responser;
+
+use crate::browser_process::localhost::data_responser::{DataResponser, parse_bytes_single_range};
+use crate::browser_process::localhost::headers_responser::HeadersResponser;
+use crate::prelude::IntoString;
+use async_channel::{Receiver, Sender};
+use bevy::asset::Asset;
+use bevy::prelude::*;
+use bevy::tasks::IoTaskPool;
+use cef::rc::{Rc, RcImpl};
+use cef::{
+    Browser, Callback, CefString, Frame, ImplCallback, ImplRequest, ImplResourceHandler,
+    ImplResponse, ImplSchemeHandlerFactory, Request, ResourceHandler, ResourceReadCallback,
+    Response, SchemeHandlerFactory, WrapResourceHandler, WrapSchemeHandlerFactory, sys,
+};
+use cef_dll_sys::{_cef_resource_handler_t, cef_base_ref_counted_t};
+use serde::{Deserialize, Serialize};
+use std::os::raw::c_int;
+use std::sync::{Arc, Mutex};
+
+/// `cef://` scheme response asset.
+#[derive(Asset, Reflect, Debug, Clone, Serialize, Deserialize)]
+#[reflect(Debug, Serialize, Deserialize)]
+pub struct CefResponse {
+    /// The media type.
+    pub mime_type: String,
+    /// The status code of the response, e.g., 200 for OK, 404 for Not Found.
+    pub status_code: u32,
+    /// The response data, typically HTML or other content.
+    pub data: Vec<u8>,
+}
+
+impl Default for CefResponse {
+    fn default() -> Self {
+        Self {
+            mime_type: "text/html".to_string(),
+            status_code: 404,
+            data: b"<!DOCTYPE html><html><body><h1>404 Not Found</h1></body></html>".to_vec(),
+        }
+    }
+}
+
+#[derive(Debug, Clone, Component)]
+pub struct Responser(pub Sender<CefResponse>);
+
+#[derive(Resource, Debug, Clone, Deref)]
+pub struct Requester(pub Sender<CefRequest>);
+
+#[derive(Resource, Debug, Clone)]
+pub struct RequesterReceiver(pub Receiver<CefRequest>);
+
+#[derive(Debug, Clone)]
+pub struct CefRequest {
+    pub uri: String,
+    pub responser: Responser,
+}
+
+/// Use to register a local schema handler for the CEF browser.
+///
+/// ## Reference
+///
+/// - [`CefSchemeHandlerFactory Class Reference`](https://cef-builds.spotifycdn.com/docs/106.1/classCefSchemeHandlerFactory.html)
+pub struct LocalSchemaHandlerBuilder {
+    object: *mut RcImpl<sys::_cef_scheme_handler_factory_t, Self>,
+    requester: Requester,
+}
+
+impl LocalSchemaHandlerBuilder {
+    pub fn build(requester: Requester) -> SchemeHandlerFactory {
+        SchemeHandlerFactory::new(Self {
+            object: std::ptr::null_mut(),
+            requester,
+        })
+    }
+}
+
+impl Rc for LocalSchemaHandlerBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl WrapSchemeHandlerFactory for LocalSchemaHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::cef_scheme_handler_factory_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Clone for LocalSchemaHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self {
+            object,
+            requester: self.requester.clone(),
+        }
+    }
+}
+
+impl ImplSchemeHandlerFactory for LocalSchemaHandlerBuilder {
+    fn create(
+        &self,
+        _browser: Option<&mut Browser>,
+        _frame: Option<&mut Frame>,
+        _scheme_name: Option<&CefString>,
+        _request: Option<&mut Request>,
+    ) -> Option<ResourceHandler> {
+        Some(LocalResourceHandlerBuilder::build(self.requester.clone()))
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut sys::_cef_scheme_handler_factory_t {
+        self.object.cast()
+    }
+}
+
+struct LocalResourceHandlerBuilder {
+    object: *mut RcImpl<_cef_resource_handler_t, Self>,
+    requester: Requester,
+    headers: Arc<Mutex<HeadersResponser>>,
+    data: Arc<Mutex<DataResponser>>,
+}
+
+impl LocalResourceHandlerBuilder {
+    fn build(requester: Requester) -> ResourceHandler {
+        ResourceHandler::new(Self {
+            object: std::ptr::null_mut(),
+            requester,
+            headers: Arc::new(Mutex::new(HeadersResponser::default())),
+            data: Arc::new(Mutex::new(DataResponser::default())),
+        })
+    }
+}
+
+impl WrapResourceHandler for LocalResourceHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::_cef_resource_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Clone for LocalResourceHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self {
+            object,
+            requester: self.requester.clone(),
+            headers: self.headers.clone(),
+            data: self.data.clone(),
+        }
+    }
+}
+
+impl Rc for LocalResourceHandlerBuilder {
+    fn as_base(&self) -> &cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl ImplResourceHandler for LocalResourceHandlerBuilder {
+    fn open(
+        &self,
+        request: Option<&mut Request>,
+        handle_request: Option<&mut c_int>,
+        callback: Option<&mut Callback>,
+    ) -> c_int {
+        let Some(request) = request else {
+            // Cancel the request if no request is provided
+            return 0;
+        };
+        let range_header_value = request.header_by_name(Some(&"Range".into())).into_string();
+        let range = parse_bytes_single_range(&range_header_value);
+        let Some(callback) = callback.cloned() else {
+            // If no callback is provided, we cannot handle the request
+            return 0;
+        };
+        if let Some(handle_request) = handle_request {
+            *handle_request = 0;
+        }
+        let url = request.url().into_string();
+        let requester = self.requester.clone();
+        let headers_responser = self.headers.clone();
+        let data_responser = self.data.clone();
+        IoTaskPool::get()
+            .spawn(async move {
+                let (tx, rx) = async_channel::bounded(1);
+                let _ = requester
+                    .send(CefRequest {
+                        uri: url
+                            .strip_prefix("cef://localhost/")
+                            .unwrap_or_default()
+                            .to_string(),
+                        responser: Responser(tx),
+                    })
+                    .await;
+                let response = rx.recv().await.unwrap_or_default();
+                headers_responser.lock().unwrap().prepare(&response, &range);
+                data_responser
+                    .lock()
+                    .unwrap()
+                    .prepare(response.data, &range);
+                callback.cont();
+            })
+            .detach();
+        1
+    }
+
+    fn response_headers(
+        &self,
+        response: Option<&mut Response>,
+        response_length: Option<&mut i64>,
+        _redirect_url: Option<&mut CefString>,
+    ) {
+        let Ok(responser) = self.headers.lock() else {
+            return;
+        };
+        if let Some(response) = response {
+            response.set_mime_type(Some(&responser.mime_type.as_str().into()));
+            response.set_status(responser.status_code as _);
+            for (name, value) in &responser.headers {
+                response.set_header_by_name(
+                    Some(&name.as_str().into()),
+                    Some(&value.as_str().into()),
+                    false as _,
+                );
+            }
+        }
+        if let Some(response_length) = response_length {
+            *response_length = responser.response_length as _;
+        }
+    }
+
+    #[allow(clippy::not_unsafe_ptr_arg_deref)]
+    fn read(
+        &self,
+        data_out: *mut u8,
+        bytes_to_read: c_int,
+        bytes_read: Option<&mut c_int>,
+        _: Option<&mut ResourceReadCallback>,
+    ) -> c_int {
+        let Some(bytes_read) = bytes_read else {
+            // If no bytes_read is provided, we cannot read data
+            return 0;
+        };
+        let Ok(mut responser) = self.data.lock() else {
+            return 0;
+        };
+        match responser.read(bytes_to_read as _) {
+            Some(data) if !data.is_empty() => {
+                let n = data.len();
+                unsafe {
+                    std::ptr::copy_nonoverlapping(data.as_ptr(), data_out, n);
+                }
+                *bytes_read = n as i32;
+                1
+            }
+            _ => {
+                *bytes_read = 0;
+                0
+            }
+        }
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut _cef_resource_handler_t {
+        self.object.cast()
+    }
+}

crates/bevy_cef_core/src/browser_process/localhost/data_responser.rs

@@ -0,0 +1,236 @@
+use bevy::prelude::*;
+
+#[derive(Default, Clone)]
+pub struct DataResponser {
+    data: Vec<u8>,
+    offset: usize,
+    end_offset: usize,
+}
+
+impl DataResponser {
+    /// Prepares the data and headers for the response.
+    ///
+    /// The range header values only support the `bytes` range unit type and single range.
+    /// TODO: Support multiple ranges.
+    pub fn prepare(&mut self, data: Vec<u8>, range: &Option<(usize, Option<usize>)>) {
+        if let Some((start, end)) = range {
+            self.offset = *start;
+            self.end_offset = end.unwrap_or(data.len() - 1) + 1;
+            self.data = data;
+        } else {
+            self.offset = 0;
+            self.end_offset = data.len();
+            self.data = data;
+        }
+    }
+
+    pub fn read(&mut self, bytes_to_read: isize) -> Option<&[u8]> {
+        if self.offset >= self.data.len() {
+            return None;
+        }
+        let start = self.offset;
+        let end = if bytes_to_read < 0 {
+            self.data.len()
+        } else {
+            (self.offset as isize + bytes_to_read) as usize
+        };
+        let end = end.min(self.end_offset);
+
+        if start >= end || start >= self.data.len() {
+            return None;
+        }
+
+        let slice = &self.data[start..end.min(self.data.len())];
+        self.offset += slice.len();
+        Some(slice)
+    }
+}
+
+pub fn parse_bytes_single_range(range_header_value: &str) -> Option<(usize, Option<usize>)> {
+    let ranges = parse_bytes_range(range_header_value)?;
+    ranges.first().cloned()
+}
+
+/// Parses the `Range` header value from a request and returns the start of the range.
+///
+/// ## Reference
+///
+/// - [`Range_requests`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/Range_requests)
+fn parse_bytes_range(range_header_value: &str) -> Option<Vec<(usize, Option<usize>)>> {
+    if !range_header_value.starts_with("bytes=") {
+        return None;
+    }
+    let mut ranges = Vec::new();
+    let value = range_header_value.trim_start_matches("bytes=");
+    // bytes=100-200,300-400 => ["100-200", "300-400"]
+    let byte_ranges = value.split(",");
+    for range in byte_ranges {
+        // 100-200 => ["100", "200"]
+        let mut split = range.split("-");
+        let start = split.next()?;
+        let end = split.next();
+        let start = start.parse::<usize>().ok()?;
+        let end = end.and_then(|e| e.parse::<usize>().ok());
+        ranges.push((start, end));
+    }
+    Some(ranges)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    #[test]
+    fn range_start_is_none_if_empty() {
+        assert_eq!(parse_bytes_range(""), None);
+    }
+
+    #[test]
+    fn range_only_start_offset() {
+        assert_eq!(parse_bytes_range("bytes=100-"), Some(vec![(100, None)]));
+    }
+
+    #[test]
+    fn range_one_bytes() {
+        assert_eq!(
+            parse_bytes_range("bytes=100-200"),
+            Some(vec![(100, Some(200))])
+        );
+    }
+
+    #[test]
+    fn range_multiple_ranges() {
+        assert_eq!(
+            parse_bytes_range("bytes=100-200,300-400"),
+            Some(vec![(100, Some(200)), (300, Some(400))])
+        );
+    }
+
+    #[test]
+    fn data_responser_new_with_start_and_end() {
+        let data = vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+        let mut responser = DataResponser::default();
+        responser.prepare(data.clone(), &Some((2, Some(7))));
+        assert_eq!(responser.data, data);
+        assert_eq!(responser.offset, 2);
+        assert_eq!(responser.end_offset, 7);
+    }
+
+    #[test]
+    fn data_responser_new_with_start_only() {
+        let data = vec![1, 2, 3, 4, 5];
+        let mut responser = DataResponser::default();
+        responser.prepare(data.clone(), &Some((3, None)));
+
+        assert_eq!(responser.data, data);
+        assert_eq!(responser.offset, 3);
+        assert_eq!(responser.end_offset, 5);
+    }
+
+    #[test]
+    fn data_responser_new_with_zero_start() {
+        let data = vec![1, 2, 3];
+        let mut responser = DataResponser::default();
+        responser.prepare(data.clone(), &Some((0, None)));
+
+        assert_eq!(responser.data, data);
+        assert_eq!(responser.offset, 0);
+        assert_eq!(responser.end_offset, 2);
+    }
+
+    #[test]
+    fn data_responser_new_with_empty_data() {
+        let data = vec![];
+        let mut responser = DataResponser::default();
+        responser.prepare(data.clone(), &Some((0, None)));
+
+        assert_eq!(responser.data, data);
+        assert_eq!(responser.offset, 0);
+        assert_eq!(responser.end_offset, 0);
+    }
+
+    #[test]
+    fn data_responser_new_with_start_beyond_data_length() {
+        let data = vec![1, 2, 3];
+        let mut responser = DataResponser::default();
+        responser.prepare(data.clone(), &Some((5, None)));
+
+        assert_eq!(responser.data, data);
+        assert_eq!(responser.offset, 5);
+        assert_eq!(responser.end_offset, 3);
+    }
+
+    #[test]
+    fn data_responser_new_with_end_beyond_data_length() {
+        let data = vec![1, 2, 3];
+        let mut responser = DataResponser::default();
+        responser.prepare(data.clone(), &Some((1, Some(10))));
+
+        assert_eq!(responser.data, data);
+        assert_eq!(responser.offset, 1);
+        assert_eq!(responser.end_offset, 10);
+    }
+
+    #[test]
+    fn data_responser_read_no_end_data_smaller_than_bytes_to_read() {
+        let data = vec![1, 2, 3, 4, 5];
+        let mut responser = DataResponser::default();
+        responser.prepare(data, &Some((2, None)));
+
+        let result = responser.read(10);
+        assert_eq!(result, Some(&[3, 4, 5][..]));
+    }
+
+    #[test]
+    fn data_responser_read_no_end_data_larger_than_bytes_to_read() {
+        let data = vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+        let mut responser = DataResponser::default();
+        responser.prepare(data, &Some((2, None)));
+
+        let result1 = responser.read(3);
+        assert_eq!(result1, Some(&[3, 4, 5][..]));
+
+        let result2 = responser.read(3);
+        assert_eq!(result2, Some(&[6, 7, 8][..]));
+    }
+
+    #[test]
+    fn data_responser_read_with_end_data_smaller_than_bytes_to_read() {
+        let data = vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+        let mut responser = DataResponser::default();
+        responser.prepare(data, &Some((2, Some(6))));
+
+        let result = responser.read(10);
+        assert_eq!(result, Some(&[3, 4, 5, 6][..]));
+    }
+
+    #[test]
+    fn data_responser_read_with_end_data_larger_than_bytes_to_read() {
+        let data = vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+        let mut responser = DataResponser::default();
+        responser.prepare(data, &Some((1, Some(7))));
+
+        let result1 = responser.read(3);
+        assert_eq!(result1, Some(&[2, 3, 4][..]));
+
+        let result2 = responser.read(3);
+        assert_eq!(result2, Some(&[5, 6, 7][..]));
+    }
+    #[test]
+    fn data_responser_read_consecutive_calls_until_end() {
+        let data = vec![1, 2, 3, 4, 5, 6, 7, 8];
+        let mut responser = DataResponser::default();
+        responser.prepare(data, &Some((1, Some(6))));
+
+        let result1 = responser.read(2);
+        assert_eq!(result1, Some(&[2, 3][..]));
+
+        let result2 = responser.read(2);
+        assert_eq!(result2, Some(&[4, 5][..]));
+
+        let result3 = responser.read(2);
+        assert_eq!(result3, Some(&[6][..]));
+
+        let result4 = responser.read(2);
+        assert_eq!(result4, None);
+    }
+}

crates/bevy_cef_core/src/browser_process/localhost/headers_responser.rs

@@ -0,0 +1,236 @@
+use crate::prelude::CefResponse;
+
+#[derive(Clone, Default, Debug)]
+pub struct HeadersResponser {
+    pub mime_type: String,
+    pub status_code: u32,
+    pub headers: Vec<(String, String)>,
+    pub response_length: usize,
+}
+
+impl HeadersResponser {
+    pub fn prepare(&mut self, cef_response: &CefResponse, range: &Option<(usize, Option<usize>)>) {
+        self.mime_type = cef_response.mime_type.clone();
+        self.status_code = if range.is_some() {
+            206 // Partial Content
+        } else {
+            cef_response.status_code
+        };
+        self.headers.clear();
+        self.response_length = obtain_response_length(&cef_response.data, range);
+        if let Some(content_range) = content_range_header_value(&cef_response.data, range) {
+            self.headers
+                .push(("Content-Range".to_string(), content_range));
+            self.headers
+                .push(("Accept-Ranges".to_string(), "bytes".to_string()));
+        }
+    }
+}
+
+/// Create a `Content-Range` header value based on the provided data and range.
+///
+/// If the range is `None`, since the request type is not a range request, it returns `None`.
+///
+/// ## Reference
+///
+/// - [206 Partial Content](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/206)
+fn content_range_header_value(
+    data: &[u8],
+    range: &Option<(usize, Option<usize>)>,
+) -> Option<String> {
+    let (start, end) = range.as_ref()?;
+    Some(format!(
+        "bytes {}-{}/{}",
+        start,
+        end.unwrap_or(data.len() - 1),
+        data.len()
+    ))
+}
+
+fn obtain_response_length(data: &[u8], range: &Option<(usize, Option<usize>)>) -> usize {
+    match range {
+        Some((start, end)) => end.unwrap_or(data.len() - 1) - start + 1,
+        None => data.len(),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use bevy::utils::default;
+
+    #[test]
+    fn test_obtain_response_length_no_range() {
+        let data = b"Hello, World!";
+        let result = obtain_response_length(data, &None);
+        assert_eq!(result, 13);
+    }
+
+    #[test]
+    fn test_obtain_response_length_empty_data_no_range() {
+        let data = b"";
+        let result = obtain_response_length(data, &None);
+        assert_eq!(result, 0);
+    }
+
+    #[test]
+    fn test_obtain_response_length_range_with_end() {
+        let data = b"Hello, World!";
+        let result = obtain_response_length(data, &Some((0, Some(5))));
+        assert_eq!(result, 5);
+    }
+
+    #[test]
+    fn test_obtain_response_length_range_partial() {
+        let data = b"Hello, World!";
+        let result = obtain_response_length(data, &Some((7, Some(12))));
+        assert_eq!(result, 5);
+    }
+
+    #[test]
+    fn test_obtain_response_length_range_without_end() {
+        let data = b"Hello, World!";
+        let result = obtain_response_length(data, &Some((7, None)));
+        assert_eq!(result, 6);
+    }
+
+    #[test]
+    fn test_obtain_response_length_range_from_start() {
+        let data = b"Hello, World!";
+        let result = obtain_response_length(data, &Some((0, None)));
+        assert_eq!(result, 13);
+    }
+
+    #[test]
+    fn test_obtain_response_length_range_zero_length() {
+        let data = b"Hello, World!";
+        let result = obtain_response_length(data, &Some((5, Some(5))));
+        assert_eq!(result, 0);
+    }
+
+    #[test]
+    fn test_obtain_response_length_range_end_equals_data_len() {
+        let data = b"Hello, World!";
+        let result = obtain_response_length(data, &Some((0, Some(13))));
+        assert_eq!(result, 13);
+    }
+
+    #[test]
+    fn test_obtain_response_length_empty_data_with_range() {
+        let data = b"";
+        let result = obtain_response_length(data, &Some((0, None)));
+        assert_eq!(result, 0);
+    }
+
+    #[test]
+    fn test_obtain_response_length_large_data() {
+        let data = vec![0u8; 1024];
+        let result = obtain_response_length(&data, &None);
+        assert_eq!(result, 1024);
+    }
+
+    #[test]
+    fn test_obtain_response_length_large_data_with_range() {
+        let data = vec![0u8; 1024];
+        let result = obtain_response_length(&data, &Some((100, Some(200))));
+        assert_eq!(result, 100);
+    }
+
+    #[test]
+    fn test_content_range_header_value_no_range() {
+        let data = b"Hello, World!";
+        let result = content_range_header_value(data, &None);
+        assert_eq!(result, None);
+    }
+
+    #[test]
+    fn test_content_range_header_value_range_with_end() {
+        let data = b"Hello, World!";
+        let result = content_range_header_value(data, &Some((0, Some(5))));
+        assert_eq!(result, Some("bytes 0-4/13".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_range_without_end() {
+        let data = b"Hello, World!";
+        let result = content_range_header_value(data, &Some((7, None)));
+        assert_eq!(result, Some("bytes 7-12/13".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_range_from_start() {
+        let data = b"Hello, World!";
+        let result = content_range_header_value(data, &Some((0, None)));
+        assert_eq!(result, Some("bytes 0-12/13".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_range_partial() {
+        let data = b"Hello, World!";
+        let result = content_range_header_value(data, &Some((7, Some(12))));
+        assert_eq!(result, Some("bytes 7-11/13".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_range_single_byte() {
+        let data = b"Hello, World!";
+        let result = content_range_header_value(data, &Some((5, Some(6))));
+        assert_eq!(result, Some("bytes 5-5/13".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_range_last_byte() {
+        let data = b"Hello, World!";
+        let result = content_range_header_value(data, &Some((12, Some(13))));
+        assert_eq!(result, Some("bytes 12-12/13".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_single_byte_data() {
+        let data = b"a";
+        let result = content_range_header_value(data, &Some((0, None)));
+        assert_eq!(result, Some("bytes 0-0/1".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_large_data() {
+        let data = vec![0u8; 1024];
+        let result = content_range_header_value(&data, &Some((100, Some(200))));
+        assert_eq!(result, Some("bytes 100-199/1024".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_large_data_no_end() {
+        let data = vec![0u8; 1024];
+        let result = content_range_header_value(&data, &Some((500, None)));
+        assert_eq!(result, Some("bytes 500-1023/1024".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_zero_start() {
+        let data = b"test";
+        let result = content_range_header_value(data, &Some((0, Some(2))));
+        assert_eq!(result, Some("bytes 0-1/4".to_string()));
+    }
+
+    #[test]
+    fn test_content_range_header_value_range_end_equals_data_len() {
+        let data = b"Hello, World!";
+        let result = content_range_header_value(data, &Some((0, Some(13))));
+        assert_eq!(result, Some("bytes 0-12/13".to_string()));
+    }
+
+    #[test]
+    fn status_code_is_206_for_partial_content() {
+        let data = b"Hello, World!";
+        let mut headers_responser = HeadersResponser::default();
+        headers_responser.prepare(
+            &CefResponse {
+                data: data.to_vec(),
+                ..default()
+            },
+            &Some((0, Some(5))),
+        );
+        assert_eq!(headers_responser.status_code, 206);
+    }
+}

crates/bevy_cef_core/src/browser_process/renderer_handler.rs

@@ -0,0 +1,167 @@
+use async_channel::{Receiver, Sender};
+use bevy::prelude::{Entity, Event};
+use cef::rc::{Rc, RcImpl};
+use cef::{
+    Browser, CefString, ImplRenderHandler, PaintElementType, Range, Rect, RenderHandler,
+    WrapRenderHandler, sys,
+};
+use cef_dll_sys::cef_paint_element_type_t;
+use std::cell::Cell;
+use std::os::raw::c_int;
+
+pub type TextureSender = Sender<RenderTexture>;
+
+pub type TextureReceiver = Receiver<RenderTexture>;
+
+/// The texture structure passed from [`CefRenderHandler::OnPaint`](https://cef-builds.spotifycdn.com/docs/106.1/classCefRenderHandler.html#a6547d5c9dd472e6b84706dc81d3f1741).
+#[derive(Debug, Clone, PartialEq, Event)]
+pub struct RenderTexture {
+    /// The entity of target rendering webview.
+    pub webview: Entity,
+    /// The type of the paint element.
+    pub ty: RenderPaintElementType,
+    /// The width of the texture.
+    pub width: u32,
+    /// The height of the texture.
+    pub height: u32,
+    /// This buffer will be `width` *`height` * 4 bytes in size and represents a BGRA image with an upper-left origin
+    pub buffer: Vec<u8>,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum RenderPaintElementType {
+    /// The main frame of the browser.
+    View,
+    /// The popup frame of the browser.
+    Popup,
+}
+
+pub type SharedViewSize = std::rc::Rc<Cell<bevy::prelude::Vec2>>;
+pub type SharedImeCaret = std::rc::Rc<Cell<u32>>;
+
+/// ## Reference
+///
+/// - [`CefRenderHandler Class Reference`](https://cef-builds.spotifycdn.com/docs/106.1/classCefRenderHandler.html)
+pub struct RenderHandlerBuilder {
+    object: *mut RcImpl<sys::cef_render_handler_t, Self>,
+    webview: Entity,
+    texture_sender: TextureSender,
+    size: SharedViewSize,
+    ime_caret: SharedImeCaret,
+}
+
+impl RenderHandlerBuilder {
+    pub fn build(
+        webview: Entity,
+        texture_sender: TextureSender,
+        size: SharedViewSize,
+        ime_caret: SharedImeCaret,
+    ) -> RenderHandler {
+        RenderHandler::new(Self {
+            object: std::ptr::null_mut(),
+            webview,
+            texture_sender,
+            size,
+            ime_caret,
+        })
+    }
+}
+
+impl Rc for RenderHandlerBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl WrapRenderHandler for RenderHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::_cef_render_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Clone for RenderHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self {
+            object,
+            webview: self.webview,
+            texture_sender: self.texture_sender.clone(),
+            size: self.size.clone(),
+            ime_caret: self.ime_caret.clone(),
+        }
+    }
+}
+
+impl ImplRenderHandler for RenderHandlerBuilder {
+    fn view_rect(&self, _browser: Option<&mut Browser>, rect: Option<&mut Rect>) {
+        if let Some(rect) = rect {
+            let size = self.size.get();
+            rect.width = size.x as _;
+            rect.height = size.y as _;
+        }
+    }
+
+    fn on_text_selection_changed(
+        &self,
+        _browser: Option<&mut Browser>,
+        _: Option<&CefString>,
+        selected_range: Option<&Range>,
+    ) {
+        if let Some(selected_range) = selected_range {
+            self.ime_caret.set(selected_range.to);
+        }
+    }
+
+    #[allow(clippy::not_unsafe_ptr_arg_deref)]
+    fn on_paint(
+        &self,
+        _browser: Option<&mut Browser>,
+        type_: PaintElementType,
+        _dirty_rects_count: usize,
+        _dirty_rects: Option<&Rect>,
+        buffer: *const u8,
+        width: c_int,
+        height: c_int,
+    ) {
+        let ty = match type_.as_ref() {
+            cef_paint_element_type_t::PET_POPUP => RenderPaintElementType::Popup,
+            _ => RenderPaintElementType::View,
+        };
+        let texture = RenderTexture {
+            webview: self.webview,
+            ty,
+            width: width as u32,
+            height: height as u32,
+            buffer: unsafe {
+                std::slice::from_raw_parts(buffer, (width * height * 4) as usize).to_vec()
+            },
+        };
+        let _ = self.texture_sender.send_blocking(texture);
+    }
+
+    /// MEMO: This method only supports on Windows
+    ///
+    /// In Windows, this method is more performant than `on_paint`?
+    #[cfg(target_os = "windows")]
+    fn on_accelerated_paint(
+        &self,
+        _browser: Option<&mut Browser>,
+        _type_: PaintElementType,
+        _dirty_rects_count: usize,
+        _dirty_rects: Option<&Rect>,
+        _: Option<&AcceleratedPaintInfo>,
+    ) {
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut sys::_cef_render_handler_t {
+        self.object.cast()
+    }
+}

crates/bevy_cef_core/src/browser_process/request_context_handler.rs

@@ -0,0 +1,50 @@
+use cef::rc::{Rc, RcImpl};
+use cef::{ImplRequestContextHandler, WrapRequestContextHandler, sys};
+
+/// ## Reference
+///
+/// - [`CefRequestContextHandler Class Reference`](https://cef-builds.spotifycdn.com/docs/106.1/classCefRequestContextHandler.html)
+pub struct RequestContextHandlerBuilder {
+    object: *mut RcImpl<sys::cef_request_context_handler_t, Self>,
+}
+
+impl RequestContextHandlerBuilder {
+    pub fn build() -> cef::RequestContextHandler {
+        cef::RequestContextHandler::new(Self {
+            object: core::ptr::null_mut(),
+        })
+    }
+}
+
+impl WrapRequestContextHandler for RequestContextHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::_cef_request_context_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Rc for RequestContextHandlerBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            core::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl Clone for RequestContextHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self { object }
+    }
+}
+
+impl ImplRequestContextHandler for RequestContextHandlerBuilder {
+    #[inline]
+    fn get_raw(&self) -> *mut sys::_cef_request_context_handler_t {
+        self.object.cast()
+    }
+}

crates/bevy_cef_core/src/debug.rs

@@ -0,0 +1,52 @@
+use cef::{load_library, unload_library};
+use std::env::home_dir;
+
+/// This loader is a modified version of [LibraryLoader](cef::library_loader::LibraryLoader) that can load the framework located in the home directory.
+pub struct DebugLibraryLoader {
+    path: std::path::PathBuf,
+}
+
+impl Default for DebugLibraryLoader {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl DebugLibraryLoader {
+    const FRAMEWORK_PATH: &'static str =
+        "Chromium Embedded Framework.framework/Chromium Embedded Framework";
+
+    pub fn new() -> Self {
+        let path = home_dir()
+            .unwrap()
+            .join(".local")
+            .join("share")
+            .join("cef")
+            .join(Self::FRAMEWORK_PATH)
+            .canonicalize()
+            .unwrap();
+
+        Self { path }
+    }
+
+    // See [cef_load_library] for more documentation.
+    pub fn load(&self) -> bool {
+        Self::load_library(&self.path)
+    }
+
+    fn load_library(name: &std::path::Path) -> bool {
+        use std::os::unix::ffi::OsStrExt;
+        let Ok(name) = std::ffi::CString::new(name.as_os_str().as_bytes()) else {
+            return false;
+        };
+        unsafe { load_library(Some(&*name.as_ptr().cast())) == 1 }
+    }
+}
+
+impl Drop for DebugLibraryLoader {
+    fn drop(&mut self) {
+        if unload_library() != 1 {
+            eprintln!("cannot unload framework {}", self.path.display());
+        }
+    }
+}

crates/bevy_cef_core/src/lib.rs

@@ -0,0 +1,15 @@
+mod browser_process;
+mod debug;
+mod render_process;
+mod util;
+
+pub mod prelude {
+    pub use crate::browser_process::*;
+    pub use crate::debug::*;
+    pub use crate::render_process::app::*;
+    pub use crate::render_process::brp::*;
+    pub use crate::render_process::emit::*;
+    pub use crate::render_process::execute_render_process;
+    pub use crate::render_process::render_process_handler::*;
+    pub use crate::util::*;
+}

crates/bevy_cef_core/src/render_process.rs

@@ -0,0 +1,28 @@
+use crate::prelude::RenderProcessAppBuilder;
+use cef::args::Args;
+use cef::{api_hash, execute_process, sys};
+
+pub mod app;
+pub mod brp;
+pub mod emit;
+pub mod listen;
+pub mod render_process_handler;
+
+/// Execute the CEF render process.
+pub fn execute_render_process() {
+    let args = Args::new();
+    #[cfg(target_os = "macos")]
+    let _loader = {
+        let loader =
+            cef::library_loader::LibraryLoader::new(&std::env::current_exe().unwrap(), true);
+        assert!(loader.load());
+        loader
+    };
+    let _ = api_hash(sys::CEF_API_VERSION_LAST, 0);
+    let mut app = RenderProcessAppBuilder::build();
+    execute_process(
+        Some(args.as_main_args()),
+        Some(&mut app),
+        std::ptr::null_mut(),
+    );
+}

crates/bevy_cef_core/src/render_process/app.rs

@@ -0,0 +1,63 @@
+use crate::prelude::RenderProcessHandlerBuilder;
+use crate::util::{SCHEME_CEF, cef_scheme_flags};
+use cef::rc::{Rc, RcImpl};
+use cef::{ImplApp, ImplSchemeRegistrar, RenderProcessHandler, SchemeRegistrar, WrapApp};
+use cef_dll_sys::{_cef_app_t, cef_base_ref_counted_t};
+
+#[derive(Default)]
+pub struct RenderProcessAppBuilder {
+    object: *mut RcImpl<_cef_app_t, Self>,
+}
+
+impl RenderProcessAppBuilder {
+    pub fn build() -> cef::App {
+        cef::App::new(Self {
+            object: core::ptr::null_mut(),
+        })
+    }
+}
+
+impl Clone for RenderProcessAppBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            self.object
+        };
+        Self { object }
+    }
+}
+
+impl Rc for RenderProcessAppBuilder {
+    fn as_base(&self) -> &cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl ImplApp for RenderProcessAppBuilder {
+    fn render_process_handler(&self) -> Option<RenderProcessHandler> {
+        Some(RenderProcessHandler::new(
+            RenderProcessHandlerBuilder::build(),
+        ))
+    }
+
+    fn on_register_custom_schemes(&self, registrar: Option<&mut SchemeRegistrar>) {
+        if let Some(registrar) = registrar {
+            registrar.add_custom_scheme(Some(&SCHEME_CEF.into()), cef_scheme_flags() as _);
+        }
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut _cef_app_t {
+        self.object as *mut _cef_app_t
+    }
+}
+
+impl WrapApp for RenderProcessAppBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<_cef_app_t, Self>) {
+        self.object = object;
+    }
+}

crates/bevy_cef_core/src/render_process/brp.rs

@@ -0,0 +1,181 @@
+use crate::prelude::{BRP_PROMISES, PROCESS_MESSAGE_BRP, v8_value_to_json};
+use cef::rc::{ConvertParam, ConvertReturnValue, Rc, RcImpl};
+use cef::{
+    CefString, Frame, ImplFrame, ImplListValue, ImplProcessMessage, ImplV8Handler, ImplV8Value,
+    ProcessId, V8Handler, V8Value, WrapV8Handler, process_message_create, sys,
+    v8_value_create_promise, v8_value_create_string,
+};
+use cef_dll_sys::{_cef_v8_handler_t, _cef_v8_value_t, cef_process_id_t, cef_string_t};
+use std::os::raw::c_int;
+use std::ptr::write;
+
+/// Implements the `window.brp` function in JavaScript.
+///
+/// The function definition is `async <T>(request: BrpRequest) -> Promise<T>`.
+///
+/// The flow from the execution of the function to the return of the result to the Javascript side is as follows:
+/// 1. Send `BrpRequest` to the browser process.
+/// 2. The browser process receives `BrpResult` and sends it to the render process.
+/// 3. The render process receives the result in `on_process_message_received`.
+/// 4. The render process resolves the result to the `Promise` of `window.brp`.
+pub struct BrpBuilder {
+    object: *mut RcImpl<_cef_v8_handler_t, Self>,
+    frame: Frame,
+}
+
+impl BrpBuilder {
+    pub fn build(frame: Frame) -> V8Handler {
+        V8Handler::new(Self {
+            object: core::ptr::null_mut(),
+            frame,
+        })
+    }
+}
+
+impl Rc for BrpBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl WrapV8Handler for BrpBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<_cef_v8_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Clone for BrpBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self {
+            object,
+            frame: self.frame.clone(),
+        }
+    }
+}
+
+impl ImplV8Handler for BrpBuilder {
+    fn execute(
+        &self,
+        _: Option<&CefString>,
+        _: Option<&mut V8Value>,
+        arguments: Option<&[Option<V8Value>]>,
+        ret: Option<&mut Option<V8Value>>,
+        _: Option<&mut CefString>,
+    ) -> c_int {
+        if let Some(mut process) = process_message_create(Some(&PROCESS_MESSAGE_BRP.into()))
+            && let Some(promise) = v8_value_create_promise()
+        {
+            if let Some(arguments_list) = process.argument_list()
+                && let Some(arguments) = arguments
+                && let Some(Some(arg)) = arguments.first()
+                && let Some(brp_request) = v8_value_to_json(arg)
+                && let Ok(brp_request) = serde_json::to_string(&brp_request)
+                && let Some(ret) = ret
+            {
+                let id = uuid::Uuid::new_v4().to_string();
+                arguments_list.set_string(0, Some(&id.as_str().into()));
+                arguments_list.set_string(1, Some(&brp_request.as_str().into()));
+                self.frame.send_process_message(
+                    ProcessId::from(cef_process_id_t::PID_BROWSER),
+                    Some(&mut process),
+                );
+                ret.replace(promise.clone());
+                let mut promises = BRP_PROMISES.lock().unwrap();
+                promises.insert(id, promise);
+            } else {
+                let mut exception =
+                    v8_value_create_string(Some(&"Failed to execute BRP request".into()));
+                promise.resolve_promise(exception.as_mut());
+            }
+        }
+        1
+    }
+
+    fn init_methods(object: &mut _cef_v8_handler_t) {
+        init_methods::<Self>(object);
+    }
+
+    fn get_raw(&self) -> *mut _cef_v8_handler_t {
+        self.object.cast()
+    }
+}
+
+fn init_methods<I: ImplV8Handler>(object: &mut _cef_v8_handler_t) {
+    object.execute = Some(execute::<I>);
+}
+
+extern "C" fn execute<I: ImplV8Handler>(
+    self_: *mut _cef_v8_handler_t,
+    name: *const cef_string_t,
+    object: *mut _cef_v8_value_t,
+    arguments_count: usize,
+    arguments: *const *mut _cef_v8_value_t,
+    retval: *mut *mut _cef_v8_value_t,
+    exception: *mut cef_string_t,
+) -> c_int {
+    let (arg_self_, arg_name, arg_object, arg_arguments_count, arg_arguments, _, arg_exception) = (
+        self_,
+        name,
+        object,
+        arguments_count,
+        arguments,
+        retval,
+        exception,
+    );
+    let arg_self_: &RcImpl<_, I> = RcImpl::get(arg_self_);
+    let arg_name = if arg_name.is_null() {
+        None
+    } else {
+        Some(arg_name.into())
+    };
+    let arg_name = arg_name.as_ref();
+    let mut arg_object =
+        unsafe { arg_object.as_mut() }.map(|arg| (arg as *mut _cef_v8_value_t).wrap_result());
+    let arg_object = arg_object.as_mut();
+    let vec_arguments = unsafe { arg_arguments.as_ref() }.map(|arg| {
+        let arg =
+            unsafe { std::slice::from_raw_parts(std::ptr::from_ref(arg), arg_arguments_count) };
+        arg.iter()
+            .map(|arg| {
+                if arg.is_null() {
+                    None
+                } else {
+                    Some((*arg).wrap_result())
+                }
+            })
+            .collect::<Vec<_>>()
+    });
+    let arg_arguments = vec_arguments.as_deref();
+    let mut arg_retval: Option<V8Value> = None;
+    let arg = Some(&mut arg_retval);
+    let mut arg_exception = if arg_exception.is_null() {
+        None
+    } else {
+        Some(arg_exception.into())
+    };
+    let arg_exception = arg_exception.as_mut();
+    let r = ImplV8Handler::execute(
+        &arg_self_.interface,
+        arg_name,
+        arg_object,
+        arg_arguments,
+        arg,
+        arg_exception,
+    );
+    if let Some(ret) = arg_retval {
+        // When the result is received, the pointer should be updated here
+        // and the exception should also be updated.
+        unsafe {
+            write(retval, ret.into_raw());
+        }
+    }
+    r
+}

crates/bevy_cef_core/src/render_process/emit.rs

@@ -0,0 +1,82 @@
+use crate::prelude::PROCESS_MESSAGE_JS_EMIT;
+use crate::util::v8_value_to_json;
+use cef::rc::{Rc, RcImpl};
+use cef::{
+    CefString, Frame, ImplFrame, ImplListValue, ImplProcessMessage, ImplV8Handler, ProcessId,
+    V8Handler, V8Value, WrapV8Handler, process_message_create, sys,
+};
+use cef_dll_sys::cef_process_id_t;
+use std::os::raw::c_int;
+
+pub struct EmitBuilder {
+    object: *mut RcImpl<sys::_cef_v8_handler_t, Self>,
+    frame: Frame,
+}
+
+impl EmitBuilder {
+    pub fn build(frame: Frame) -> V8Handler {
+        V8Handler::new(Self {
+            object: core::ptr::null_mut(),
+            frame,
+        })
+    }
+}
+
+impl Rc for EmitBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl WrapV8Handler for EmitBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::_cef_v8_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Clone for EmitBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self {
+            object,
+            frame: self.frame.clone(),
+        }
+    }
+}
+
+impl ImplV8Handler for EmitBuilder {
+    fn execute(
+        &self,
+        _: Option<&CefString>,
+        _: Option<&mut V8Value>,
+        arguments: Option<&[Option<V8Value>]>,
+        _: Option<&mut Option<V8Value>>,
+        _: Option<&mut CefString>,
+    ) -> c_int {
+        if let Some(mut process) = process_message_create(Some(&PROCESS_MESSAGE_JS_EMIT.into()))
+            && let Some(arguments_list) = process.argument_list()
+            && let Some(arguments) = arguments
+            && let Some(Some(arg)) = arguments.first()
+            && let Some(arg) = v8_value_to_json(arg)
+            && let Ok(arg) = serde_json::to_string(&arg)
+        {
+            arguments_list.set_string(0, Some(&arg.as_str().into()));
+            self.frame.send_process_message(
+                ProcessId::from(cef_process_id_t::PID_BROWSER),
+                Some(&mut process),
+            );
+        }
+        1
+    }
+
+    fn get_raw(&self) -> *mut sys::_cef_v8_handler_t {
+        self.object.cast()
+    }
+}

crates/bevy_cef_core/src/render_process/listen.rs

@@ -0,0 +1,77 @@
+use crate::prelude::LISTEN_EVENTS;
+use crate::util::IntoString;
+use cef::rc::{Rc, RcImpl};
+use cef::{CefString, Frame, ImplV8Handler, ImplV8Value, V8Handler, V8Value, WrapV8Handler, sys};
+use std::os::raw::c_int;
+
+pub struct ListenBuilder {
+    object: *mut RcImpl<sys::_cef_v8_handler_t, Self>,
+    frame: Frame,
+}
+
+impl ListenBuilder {
+    pub fn build(frame: Frame) -> V8Handler {
+        V8Handler::new(Self {
+            object: core::ptr::null_mut(),
+            frame,
+        })
+    }
+}
+
+impl Rc for ListenBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl WrapV8Handler for ListenBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::_cef_v8_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Clone for ListenBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self {
+            object,
+            frame: self.frame.clone(),
+        }
+    }
+}
+
+impl ImplV8Handler for ListenBuilder {
+    fn execute(
+        &self,
+        _: Option<&CefString>,
+        _: Option<&mut V8Value>,
+        arguments: Option<&[Option<V8Value>]>,
+        _: Option<&mut Option<V8Value>>,
+        _: Option<&mut CefString>,
+    ) -> c_int {
+        if let Some(arguments) = arguments
+            && let Some(Some(id)) = arguments.first()
+            && 0 < id.is_string()
+            && let Some(Some(callback)) = arguments.get(1)
+            && 0 < callback.is_function()
+        {
+            LISTEN_EVENTS
+                .lock()
+                .unwrap()
+                .insert(id.string_value().into_string(), callback.clone());
+        }
+        1
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut sys::_cef_v8_handler_t {
+        self.object.cast()
+    }
+}

crates/bevy_cef_core/src/render_process/render_process_handler.rs

@@ -0,0 +1,191 @@
+use crate::prelude::{EmitBuilder, IntoString};
+use crate::render_process::brp::BrpBuilder;
+use crate::render_process::listen::ListenBuilder;
+use crate::util::json_to_v8;
+use crate::util::v8_accessor::V8DefaultAccessorBuilder;
+use crate::util::v8_interceptor::V8DefaultInterceptorBuilder;
+use bevy::platform::collections::HashMap;
+use bevy_remote::BrpResult;
+use cef::rc::{Rc, RcImpl};
+use cef::{
+    Browser, Frame, ImplFrame, ImplListValue, ImplProcessMessage, ImplRenderProcessHandler,
+    ImplV8Context, ImplV8Value, ProcessId, ProcessMessage, V8Context, V8Propertyattribute, V8Value,
+    WrapRenderProcessHandler, sys, v8_value_create_function, v8_value_create_object,
+};
+use std::os::raw::c_int;
+use std::sync::Mutex;
+
+pub(crate) static BRP_PROMISES: Mutex<HashMap<String, V8Value>> = Mutex::new(HashMap::new());
+pub(crate) static LISTEN_EVENTS: Mutex<HashMap<String, V8Value>> = Mutex::new(HashMap::new());
+
+pub const PROCESS_MESSAGE_BRP: &str = "brp";
+pub const PROCESS_MESSAGE_HOST_EMIT: &str = "host-emit";
+pub const PROCESS_MESSAGE_JS_EMIT: &str = "js-emit";
+
+pub struct RenderProcessHandlerBuilder {
+    object: *mut RcImpl<sys::_cef_render_process_handler_t, Self>,
+}
+
+impl RenderProcessHandlerBuilder {
+    pub fn build() -> RenderProcessHandlerBuilder {
+        RenderProcessHandlerBuilder {
+            object: core::ptr::null_mut(),
+        }
+    }
+}
+
+impl WrapRenderProcessHandler for RenderProcessHandlerBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<sys::_cef_render_process_handler_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Rc for RenderProcessHandlerBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl Clone for RenderProcessHandlerBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self { object }
+    }
+}
+
+impl ImplRenderProcessHandler for RenderProcessHandlerBuilder {
+    fn on_context_created(
+        &self,
+        _browser: Option<&mut Browser>,
+        frame: Option<&mut Frame>,
+        context: Option<&mut V8Context>,
+    ) {
+        if let Some(g) = context.and_then(|c| c.global())
+            && let Some(frame) = frame
+            && let Some(mut cef) = v8_value_create_object(
+                Some(&mut V8DefaultAccessorBuilder::build()),
+                Some(&mut V8DefaultInterceptorBuilder::build()),
+            )
+            && let Some(mut brp) = v8_value_create_function(
+                Some(&"brp".into()),
+                Some(&mut BrpBuilder::build(frame.clone())),
+            )
+            && let Some(mut emit) = v8_value_create_function(
+                Some(&"emit".into()),
+                Some(&mut EmitBuilder::build(frame.clone())),
+            )
+            && let Some(mut listen) = v8_value_create_function(
+                Some(&"listen".into()),
+                Some(&mut ListenBuilder::build(frame.clone())),
+            )
+        {
+            cef.set_value_bykey(
+                Some(&"brp".into()),
+                Some(&mut brp),
+                V8Propertyattribute::default(),
+            );
+            cef.set_value_bykey(
+                Some(&"emit".into()),
+                Some(&mut emit),
+                V8Propertyattribute::default(),
+            );
+            cef.set_value_bykey(
+                Some(&"listen".into()),
+                Some(&mut listen),
+                V8Propertyattribute::default(),
+            );
+            g.set_value_bykey(
+                Some(&"cef".into()),
+                Some(&mut cef),
+                V8Propertyattribute::default(),
+            );
+        };
+    }
+
+    fn on_process_message_received(
+        &self,
+        _browser: Option<&mut Browser>,
+        frame: Option<&mut Frame>,
+        _: ProcessId,
+        message: Option<&mut ProcessMessage>,
+    ) -> c_int {
+        if let Some(message) = message
+            && let Some(frame) = frame
+            && let Some(ctx) = frame.v8_context()
+        {
+            match message.name().into_string().as_str() {
+                PROCESS_MESSAGE_BRP => {
+                    handle_brp_message(message, ctx);
+                }
+                PROCESS_MESSAGE_HOST_EMIT => {
+                    handle_listen_message(message, ctx);
+                }
+                _ => {}
+            }
+        };
+        1
+    }
+
+    #[inline]
+    fn get_raw(&self) -> *mut sys::_cef_render_process_handler_t {
+        self.object.cast()
+    }
+}
+
+fn handle_brp_message(message: &ProcessMessage, ctx: V8Context) {
+    let Some(argument_list) = message.argument_list() else {
+        return;
+    };
+    let id = argument_list.string(0).into_string();
+    let payload = argument_list.string(1).into_string();
+    let Ok(Some(promise)) = BRP_PROMISES.lock().map(|mut p| p.remove(&id)) else {
+        return;
+    };
+
+    if let Ok(brp_result) = serde_json::from_str::<BrpResult>(&payload) {
+        ctx.enter();
+        match brp_result {
+            Ok(v) => {
+                promise.resolve_promise(json_to_v8(v).as_mut());
+            }
+            Err(e) => {
+                promise.reject_promise(Some(&e.message.as_str().into()));
+            }
+        }
+        ctx.exit();
+    }
+}
+
+fn handle_listen_message(message: &ProcessMessage, mut ctx: V8Context) {
+    let Some(argument_list) = message.argument_list() else {
+        return;
+    };
+    let id = argument_list.string(0).into_string();
+    let payload = argument_list.string(1).into_string();
+
+    ctx.enter();
+    if let Ok(value) = serde_json::from_str::<serde_json::Value>(&payload)
+        && let Ok(events) = LISTEN_EVENTS.lock()
+    {
+        let mut obj = v8_value_create_object(
+            Some(&mut V8DefaultAccessorBuilder::build()),
+            Some(&mut V8DefaultInterceptorBuilder::build()),
+        );
+        let Some(callback) = events.get(&id) else {
+            return;
+        };
+        callback.execute_function_with_context(
+            Some(&mut ctx),
+            obj.as_mut(),
+            Some(&[json_to_v8(value)]),
+        );
+    }
+    ctx.exit();
+}

crates/bevy_cef_core/src/util.rs

@@ -0,0 +1,140 @@
+pub mod v8_accessor;
+mod v8_handler_wrapper;
+pub mod v8_interceptor;
+
+use crate::util::v8_accessor::V8DefaultAccessorBuilder;
+use crate::util::v8_interceptor::V8DefaultInterceptorBuilder;
+use cef::rc::ConvertParam;
+use cef::{
+    CefStringList, CefStringUserfreeUtf16, CefStringUtf16, ImplV8Value, V8Propertyattribute,
+    v8_value_create_array, v8_value_create_bool, v8_value_create_double, v8_value_create_int,
+    v8_value_create_null, v8_value_create_object, v8_value_create_string,
+};
+use cef_dll_sys::_cef_string_utf16_t;
+use cef_dll_sys::cef_scheme_options_t::{
+    CEF_SCHEME_OPTION_CORS_ENABLED, CEF_SCHEME_OPTION_LOCAL, CEF_SCHEME_OPTION_SECURE,
+    CEF_SCHEME_OPTION_STANDARD,
+};
+use std::env::home_dir;
+use std::path::PathBuf;
+
+pub const SCHEME_CEF: &str = "cef";
+
+pub const HOST_CEF: &str = "localhost";
+
+pub fn cef_scheme_flags() -> u32 {
+    CEF_SCHEME_OPTION_STANDARD as u32
+        | CEF_SCHEME_OPTION_SECURE as u32
+        | CEF_SCHEME_OPTION_LOCAL as u32
+        | CEF_SCHEME_OPTION_CORS_ENABLED as u32
+}
+
+pub fn debug_chromium_libraries_path() -> PathBuf {
+    debug_chromium_embedded_framework_dir_path().join("Libraries")
+}
+
+pub fn debug_chromium_embedded_framework_dir_path() -> PathBuf {
+    debug_cef_path().join("Chromium Embedded Framework.framework")
+}
+
+pub fn debug_cef_path() -> PathBuf {
+    home_dir().unwrap().join(".local").join("share").join("cef")
+}
+
+pub fn debug_render_process_path() -> PathBuf {
+    cargo_bin_path().join("bevy_cef_debug_render_process")
+}
+
+pub fn cargo_bin_path() -> PathBuf {
+    home_dir().unwrap().join(".cargo").join("bin")
+}
+
+pub trait IntoString {
+    fn into_string(self) -> String;
+}
+
+impl IntoString for CefStringUserfreeUtf16 {
+    fn into_string(self) -> String {
+        let ptr: *mut _cef_string_utf16_t = self.into_raw();
+        CefStringUtf16::from(ptr).to_string()
+    }
+}
+
+pub fn v8_value_to_json(v8: &cef::V8Value) -> Option<serde_json::Value> {
+    if v8.is_bool().is_positive() {
+        Some(serde_json::Value::Bool(v8.bool_value().is_positive()))
+    } else if v8.is_int().is_positive() {
+        Some(serde_json::Value::Number(serde_json::Number::from(
+            v8.int_value(),
+        )))
+    } else if v8.is_double().is_positive() {
+        Some(serde_json::Value::Number(
+            serde_json::Number::from_f64(v8.double_value()).unwrap(),
+        ))
+    } else if v8.is_string().is_positive() {
+        Some(serde_json::Value::String(v8.string_value().into_string()))
+    } else if v8.is_null().is_positive() || v8.is_undefined().is_positive() {
+        Some(serde_json::Value::Null)
+    } else if v8.is_array().is_positive() {
+        let mut array = Vec::new();
+        let mut keys = CefStringList::new();
+        v8.keys(Some(&mut keys));
+        for key in keys.into_iter() {
+            if let Some(v) = v8.value_bykey(Some(&key.as_str().into()))
+                && let Some(serialized) = v8_value_to_json(&v)
+            {
+                {
+                    array.push(serialized);
+                }
+            }
+        }
+        Some(serde_json::Value::Array(array))
+    } else if v8.is_object().is_positive() {
+        let mut object = serde_json::Map::new();
+        let mut keys = CefStringList::new();
+        v8.keys(Some(&mut keys));
+        for key in keys.into_iter() {
+            if let Some(v) = v8.value_bykey(Some(&key.as_str().into()))
+                && let Some(serialized) = v8_value_to_json(&v)
+            {
+                {
+                    object.insert(key, serialized);
+                }
+            }
+        }
+        Some(serde_json::Value::Object(object))
+    } else {
+        None
+    }
+}
+
+pub fn json_to_v8(v: serde_json::Value) -> Option<cef::V8Value> {
+    match v {
+        serde_json::Value::Null => v8_value_create_null(),
+        serde_json::Value::Bool(b) => v8_value_create_bool(b as _),
+        serde_json::Value::Number(n) if n.is_i64() => v8_value_create_int(n.as_i64()? as i32),
+        serde_json::Value::Number(n) => v8_value_create_double(n.as_f64()?),
+        serde_json::Value::String(s) => v8_value_create_string(Some(&s.as_str().into())),
+        serde_json::Value::Array(arr) => {
+            let v8_array = v8_value_create_array(arr.len() as _)?;
+            for (i, item) in arr.into_iter().enumerate() {
+                v8_array.set_value_byindex(i as _, json_to_v8(item).as_mut());
+            }
+            Some(v8_array)
+        }
+        serde_json::Value::Object(obj) => {
+            let v8_object = v8_value_create_object(
+                Some(&mut V8DefaultAccessorBuilder::build()),
+                Some(&mut V8DefaultInterceptorBuilder::build()),
+            )?;
+            for (key, value) in obj {
+                v8_object.set_value_bykey(
+                    Some(&key.as_str().into()),
+                    json_to_v8(value).as_mut(),
+                    V8Propertyattribute::default(),
+                );
+            }
+            Some(v8_object)
+        }
+    }
+}

crates/bevy_cef_core/src/util/v8_accessor.rs

@@ -0,0 +1,48 @@
+use cef::rc::{Rc, RcImpl};
+use cef::{ImplV8Accessor, V8Accessor, WrapV8Accessor, sys};
+use cef_dll_sys::_cef_v8_accessor_t;
+
+pub struct V8DefaultAccessorBuilder {
+    object: *mut RcImpl<_cef_v8_accessor_t, Self>,
+}
+
+impl V8DefaultAccessorBuilder {
+    pub fn build() -> V8Accessor {
+        V8Accessor::new(Self {
+            object: core::ptr::null_mut(),
+        })
+    }
+}
+
+impl Rc for V8DefaultAccessorBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl Clone for V8DefaultAccessorBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self { object }
+    }
+}
+
+impl WrapV8Accessor for V8DefaultAccessorBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<_cef_v8_accessor_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl ImplV8Accessor for V8DefaultAccessorBuilder {
+    #[inline]
+    fn get_raw(&self) -> *mut _cef_v8_accessor_t {
+        self.object.cast()
+    }
+}

crates/bevy_cef_core/src/util/v8_handler_wrapper.rs

@@ -0,0 +1,70 @@
+// use std::os::raw::c_int;
+// use bevy::ecs::reflect::ReflectCommandExt;
+// use cef::rc::{Rc, RcImpl};
+// use cef::{sys, CefString, ImplV8Handler, V8Handler, V8Value, WrapV8Handler};
+// use cef_dll_sys::{_cef_v8_handler_t, _cef_v8_value_t, cef_string_t};
+//
+// pub struct V8HandlerWrapBuilder<T> {
+//     base: T,
+// }
+//
+// impl<T> V8HandlerWrapBuilder<T> {
+//     pub fn build(base: T) -> V8Handler {
+//         V8Handler::new(Self {
+//             base,
+//         })
+//     }
+// }
+//
+// impl<T: Rc> Rc for V8HandlerWrapBuilder<T> {
+//     fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+//         self.base.as_base()
+//     }
+// }
+//
+// impl<T: ImplV8Handler> ImplV8Handler for V8HandlerWrapBuilder<T> {
+//     fn execute(&self, name: Option<&CefString>, object: Option<&mut V8Value>, arguments: Option<&[Option<V8Value>]>, retval: Option<&mut Option<V8Value>>, exception: Option<&mut CefString>) -> c_int {
+//         self.base.execute(
+//             name,
+//             object,
+//             arguments,
+//             retval,
+//             exception,
+//         )
+//     }
+//
+//     fn get_raw(&self) -> *mut _cef_v8_handler_t {
+//         self.base.get_raw()
+//     }
+//
+//     fn init_methods(object: &mut _cef_v8_handler_t) {
+//         T::init_methods(object);
+//
+//     }
+// }
+//
+// impl<T: Clone> Clone for V8HandlerWrapBuilder<T> {
+//     fn clone(&self) -> Self {
+//         Self{
+//             base: self.base.clone(),
+//         }
+//     }
+// }
+//
+// impl <T: WrapV8Handler> cef::WrapV8Handler for V8HandlerWrapBuilder<T> {
+//     fn wrap_rc(&mut self, object: *mut RcImpl<sys::_cef_v8_handler_t, Self>) {
+//         self.base.wrap_rc(object);
+//     }
+// }
+//
+// // extern "C" fn execute<I: ImplV8Handler>(
+// //     self_: *mut _cef_v8_handler_t,
+// //     name: *const cef_string_t,
+// //     object: *mut _cef_v8_value_t,
+// //     arguments_count: usize,
+// //     arguments: *const *mut _cef_v8_value_t,
+// //     retval: *mut *mut _cef_v8_value_t,
+// //     exception: *mut cef_string_t,
+// // ) -> ::std::os::raw::c_int {
+// //
+// // }

crates/bevy_cef_core/src/util/v8_interceptor.rs

@@ -0,0 +1,48 @@
+use cef::rc::{Rc, RcImpl};
+use cef::{ImplV8Interceptor, V8Interceptor, WrapV8Interceptor, sys};
+use cef_dll_sys::_cef_v8_interceptor_t;
+
+pub struct V8DefaultInterceptorBuilder {
+    object: *mut RcImpl<_cef_v8_interceptor_t, Self>,
+}
+
+impl V8DefaultInterceptorBuilder {
+    pub fn build() -> V8Interceptor {
+        V8Interceptor::new(Self {
+            object: core::ptr::null_mut(),
+        })
+    }
+}
+
+impl WrapV8Interceptor for V8DefaultInterceptorBuilder {
+    fn wrap_rc(&mut self, object: *mut RcImpl<_cef_v8_interceptor_t, Self>) {
+        self.object = object;
+    }
+}
+
+impl Rc for V8DefaultInterceptorBuilder {
+    fn as_base(&self) -> &sys::cef_base_ref_counted_t {
+        unsafe {
+            let base = &*self.object;
+            std::mem::transmute(&base.cef_object)
+        }
+    }
+}
+
+impl Clone for V8DefaultInterceptorBuilder {
+    fn clone(&self) -> Self {
+        let object = unsafe {
+            let rc_impl = &mut *self.object;
+            rc_impl.interface.add_ref();
+            rc_impl
+        };
+        Self { object }
+    }
+}
+
+impl ImplV8Interceptor for V8DefaultInterceptorBuilder {
+    #[inline]
+    fn get_raw(&self) -> *mut _cef_v8_interceptor_t {
+        self.object.cast()
+    }
+}