Check loaded state

src/plug_manager/manager.rs

@@ -1,17 +1,44 @@
 use std::rc::Rc;
-use std::cell::RefCell;
+use std::cell::{RefCell, RefMut};
+
+use neovim_lib::{Neovim, NeovimApi, Value};
 
 use nvim::NeovimClient;
 
 pub struct Manager {
-    
+   nvim: Option<Rc<RefCell<NeovimClient>>>,
 }
 
 impl Manager {
     pub fn new() -> Self {
-        Manager {  }
+        Manager { 
+            nvim: None,
+        }
     }
 
     pub fn initialize(&mut self, nvim: Rc<RefCell<NeovimClient>>) {
+        self.nvim = Some(nvim);
+    }
+
+    fn nvim(&self) -> Option<RefMut<Neovim>> {
+        let nvim_client = self.nvim.as_ref().unwrap();
+        if nvim_client.borrow().is_initialized() {
+            Some(RefMut::map(nvim_client.borrow_mut(), |n| n.nvim_mut()))
+        } else {
+            None
+        }
+    }
+
+    pub fn get_state(&self) -> State {
+        if let Some(mut nvim) = self.nvim() {
+            nvim.command("exists('g:loaded_plug')");
+        }
+        
+        State::Unknown
     }
 }
+
+pub enum State {
+    Unknown,
+    AlreadyLoaded,
+}

src/plug_manager/ui.rs

@@ -1,11 +1,17 @@
 use gtk;
 use gtk::prelude::*;
 
-pub struct Ui {}
+use super::manager;
 
-impl Ui {
-    pub fn new() -> Self {
-        Ui {}
+pub struct Ui <'a> {
+    manager: &'a manager::Manager,
+}
+
+impl <'a> Ui <'a> {
+    pub fn new(manager: &'a manager::Manager) -> Ui<'a> {
+        Ui {
+            manager,
+        }
     }
 
     pub fn show<T: IsA<gtk::Window>>(&self, parent: &T) {

src/ui.rs

@@ -130,8 +130,10 @@ impl Ui {
             let plug_btn = ToolButton::new(Some(&plug_image), "Plug");
 
             let comps_ref = self.comps.clone();
+            let plug_manager_ref = self.plug_manager.clone();
             plug_btn.connect_clicked(move |_| {
-                plug_manager::Ui::new().show(comps_ref.borrow().window.as_ref().unwrap())
+                plug_manager::Ui::new(&mut *plug_manager_ref.borrow_mut())
+                    .show(comps_ref.borrow().window.as_ref().unwrap())
             });
             header_bar.pack_start(&plug_btn);
 
@@ -166,7 +168,9 @@ impl Ui {
         let state_ref = self.shell.borrow().state.clone();
         let plug_manager_ref = self.plug_manager.clone();
         shell.set_nvim_started_cb(Some(move || {
-            plug_manager_ref.borrow_mut().initialize(state_ref.borrow().nvim_clone());
+            plug_manager_ref.borrow_mut().initialize(
+                state_ref.borrow().nvim_clone(),
+            );
         }));
     }