Use colors for selected items, enable popup menu by default

src/color.rs

@@ -36,6 +36,15 @@ impl Color {
             (std::u16::MAX as f64 * self.2) as u16,
         )
     }
+
+    pub fn to_hex(&self) -> String {
+        format!(
+            "#{:X}{:X}{:X}",
+            (self.0 * 255.0) as u8,
+            (self.1 * 255.0) as u8,
+            (self.2 * 255.0) as u8
+        )
+    }
 }
 
 pub struct ColorModel {
@@ -93,7 +102,7 @@ impl ColorModel {
         }
     }
 
-    pub fn actual_cell_bg<'a>(&'a self, cell: &'a Cell) -> &'a Color  {
+    pub fn actual_cell_bg<'a>(&'a self, cell: &'a Cell) -> &'a Color {
         if !cell.attrs.reverse {
             cell.attrs.background.as_ref().unwrap_or(&self.bg_color)
         } else {
@@ -102,7 +111,7 @@ impl ColorModel {
     }
 
     #[inline]
-    pub fn actual_cell_sp<'a>(&'a self, cell: &'a Cell) -> &'a Color  {
+    pub fn actual_cell_sp<'a>(&'a self, cell: &'a Cell) -> &'a Color {
         cell.attrs.special.as_ref().unwrap_or(&self.sp_color)
     }
 

src/nvim/mod.rs

@@ -137,7 +137,7 @@ pub fn post_start_init(
     rows: u64,
 ) -> result::Result<(), NvimInitError> {
     let mut opts = UiAttachOptions::new();
-    opts.set_popupmenu_external(false);
+    opts.set_popupmenu_external(true);
     opts.set_tabline_external(true);
     nvim.borrow().unwrap().ui_attach(cols, rows, &opts).map_err(
         NvimInitError::new_post_init,

src/popup_menu.rs

@@ -9,8 +9,8 @@ use gdk::{EventButton, EventType};
 
 use neovim_lib::{Neovim, NeovimApi};
 
-use nvim;
+use color::ColorModel;
-use nvim::ErrorReport;
+use nvim::{self, ErrorReport};
 use shell;
 use input;
 
@@ -21,15 +21,23 @@ struct State {
     renderer: gtk::CellRendererText,
     tree: gtk::TreeView,
     scroll: gtk::ScrolledWindow,
+    css_provider: gtk::CssProvider,
 }
 
 impl State {
     pub fn new() -> Self {
+        let tree = gtk::TreeView::new();
+        let css_provider = gtk::CssProvider::new();
+
+        let style_context = tree.get_style_context().unwrap();
+        style_context.add_provider(&css_provider, gtk::STYLE_PROVIDER_PRIORITY_APPLICATION);
+
         State {
             nvim: None,
             renderer: gtk::CellRendererText::new(),
-            tree: gtk::TreeView::new(),
+            tree,
             scroll: gtk::ScrolledWindow::new(None, None),
+            css_provider,
         }
     }
 
@@ -59,6 +67,8 @@ impl State {
             Some(&color_model.pmenu_bg().into()),
         );
 
+        self.update_css(color_model);
+
         let col_count = menu[0].len();
         let columns = self.tree.get_columns();
 
@@ -84,6 +94,23 @@ impl State {
         self.tree.set_model(Some(&list_store));
     }
 
+    fn update_css(&self, color_model: &ColorModel) {
+        let bg = color_model.pmenu_bg_sel();
+        let fg = color_model.pmenu_fg_sel();
+
+        match gtk::CssProviderExtManual::load_from_data(
+            &self.css_provider,
+            &format!(
+                ".view {{ color: {}; background-color: {};}}",
+                fg.to_hex(),
+                bg.to_hex()
+            ),
+        ) {
+            Err(e) => error!("Can't update css {}", e),
+            Ok(_) => (),
+        };
+    }
+
     fn append_column(&self, id: i32) {
         let renderer = &self.renderer;
 

src/shell.rs

@@ -34,7 +34,7 @@ use render;
 use render::CellMetrics;
 
 const DEFAULT_FONT_NAME: &str = "DejaVu Sans Mono 12";
-pub const MINIMUM_SUPPORTED_NVIM_VERSION: &str = "0.2";
+pub const MINIMUM_SUPPORTED_NVIM_VERSION: &str = "0.2.1";
 
 macro_rules! idle_cb_call {
     ($state:ident.$cb:ident($( $x:expr ),*)) => (