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use std::result; use std::sync::{mpsc, Arc}; use neovim_lib::{Handler, RequestHandler, Value}; use crate::ui::UiMutex; use crate::shell; use glib; use super::repaint_mode::RepaintMode; use super::redraw_handler; pub struct NvimHandler { shell: Arc<UiMutex<shell::State>>, delayed_redraw_event_id: Arc<UiMutex<Option<glib::SourceId>>>, } impl NvimHandler { pub fn new(shell: Arc<UiMutex<shell::State>>) -> NvimHandler { NvimHandler { shell, delayed_redraw_event_id: Arc::new(UiMutex::new(None)), } } pub fn schedule_redraw_event(&self, event: Value) { let shell = self.shell.clone(); let delayed_redraw_event_id = self.delayed_redraw_event_id.clone(); glib::idle_add(move || { let id = Some(glib::timeout_add( 250, clone!(shell, event, delayed_redraw_event_id => move || { delayed_redraw_event_id.replace(None); if let Err(msg) = call_redraw_handler(vec![event.clone()], &shell) { error!("Error call function: {}", msg); } glib::Continue(false) }), )); delayed_redraw_event_id.replace(id); glib::Continue(false) }); } pub fn remove_scheduled_redraw_event(&self) { let delayed_redraw_event_id = self.delayed_redraw_event_id.clone(); glib::idle_add(move || { let id = delayed_redraw_event_id.replace(None); if let Some(ev_id) = id { glib::source_remove(ev_id); } glib::Continue(false) }); } fn nvim_cb(&self, method: &str, mut params: Vec<Value>) { match method { "redraw" => { redraw_handler::remove_or_delay_uneeded_events(self, &mut params); self.safe_call(move |ui| call_redraw_handler(params, ui)); } "Gui" => { if !params.is_empty() { let mut params_iter = params.into_iter(); if let Some(ev_name) = params_iter.next() { if let Value::String(ev_name) = ev_name { let args = params_iter.collect(); self.safe_call(move |ui| { let ui = &mut ui.borrow_mut(); redraw_handler::call_gui_event( ui, ev_name .as_str() .ok_or_else(|| "Event name does not exists")?, args, )?; ui.on_redraw(&RepaintMode::All); Ok(()) }); } else { error!("Unsupported event"); } } else { error!("Event name does not exists"); } } else { error!("Unsupported event {:?}", params); } } "subscription" => { self.safe_call(move |ui| { let ui = &ui.borrow(); ui.notify(params) }); } _ => { error!("Notification {}({:?})", method, params); } } } fn nvim_cb_req(&self, method: &str, params: Vec<Value>) -> result::Result<Value, Value> { match method { "Gui" => { if !params.is_empty() { let mut params_iter = params.into_iter(); if let Some(req_name) = params_iter.next() { if let Value::String(req_name) = req_name { let args = params_iter.collect(); let (sender, receiver) = mpsc::channel(); self.safe_call(move |ui| { sender .send(redraw_handler::call_gui_request( &ui.clone(), req_name .as_str() .ok_or_else(|| "Event name does not exists")?, &args, )) .unwrap(); { let ui = &mut ui.borrow_mut(); ui.on_redraw(&RepaintMode::All); } Ok(()) }); Ok(receiver.recv().unwrap()?) } else { error!("Unsupported request"); Err(Value::Nil) } } else { error!("Request name does not exist"); Err(Value::Nil) } } else { error!("Unsupported request {:?}", params); Err(Value::Nil) } } _ => { error!("Request {}({:?})", method, params); Err(Value::Nil) } } } fn safe_call<F>(&self, cb: F) where F: FnOnce(&Arc<UiMutex<shell::State>>) -> result::Result<(), String> + 'static + Send, { safe_call(self.shell.clone(), cb); } } fn call_redraw_handler( params: Vec<Value>, ui: &Arc<UiMutex<shell::State>>, ) -> result::Result<(), String> { let ui = &mut ui.borrow_mut(); let mut repaint_mode = RepaintMode::Nothing; for ev in params { if let Value::Array(ev_args) = ev { let mut args_iter = ev_args.into_iter(); let ev_name = args_iter.next(); if let Some(ev_name) = ev_name { if let Some(ev_name) = ev_name.as_str() { for local_args in args_iter { let args = match local_args { Value::Array(ar) => ar, _ => vec![], }; let call_reapint_mode = match redraw_handler::call(ui, &ev_name, args) { Ok(mode) => mode, Err(desc) => return Err(format!("Event {}\n{}", ev_name, desc)), }; repaint_mode = repaint_mode.join(call_reapint_mode); } } else { error!("Unsupported event"); } } else { error!("Event name does not exists"); } } else { error!("Unsupported event type {:?}", ev); } } ui.on_redraw(&repaint_mode); Ok(()) } fn safe_call<F>(shell: Arc<UiMutex<shell::State>>, cb: F) where F: FnOnce(&Arc<UiMutex<shell::State>>) -> result::Result<(), String> + 'static + Send, { let mut cb = Some(cb); glib::idle_add(move || { if let Err(msg) = cb.take().unwrap()(&shell) { error!("Error call function: {}", msg); } glib::Continue(false) }); } impl Handler for NvimHandler { fn handle_notify(&mut self, name: &str, args: Vec<Value>) { self.nvim_cb(name, args); } } impl RequestHandler for NvimHandler { fn handle_request(&mut self, name: &str, args: Vec<Value>) -> result::Result<Value, Value> { self.nvim_cb_req(name, args) } }