Show wild menu, starting point

src/cmd_line.rs

@@ -7,6 +7,7 @@ use std::cmp::max;
 use gtk;
 use gtk::prelude::*;
 use cairo;
+use pango;
 
 use neovim_lib::Value;
 
@@ -262,6 +263,8 @@ impl cursor::CursorRedrawCb for State {
 
 pub struct CmdLine {
     popover: gtk::Popover,
+    wild_tree: gtk::TreeView,
+    wild_scroll: gtk::ScrolledWindow,
     displyed: bool,
     state: Arc<UiMutex<State>>,
 }
@@ -272,9 +275,10 @@ impl CmdLine {
         popover.set_modal(false);
         popover.set_position(gtk::PositionType::Right);
 
+        let content = gtk::Box::new(gtk::Orientation::Vertical, 0);
+
         let drawing_area = gtk::DrawingArea::new();
-        drawing_area.show_all();
+        content.pack_start(&drawing_area, true, true, 0);
-        popover.add(&drawing_area);
 
         let state = Arc::new(UiMutex::new(State::new(drawing_area.clone(), render_state)));
         let weak_cb = Arc::downgrade(&state);
@@ -283,13 +287,49 @@ impl CmdLine {
 
         drawing_area.connect_draw(clone!(state => move |_, ctx| gtk_draw(ctx, &state)));
 
+
+        let (wild_scroll, wild_tree) = CmdLine::create_widlmenu();
+        content.pack_start(&wild_scroll, false, true, 0);
+        popover.add(&content);
+
+        drawing_area.show_all();
+        content.show();
+
         CmdLine {
             popover,
             state,
             displyed: false,
+            wild_scroll,
+            wild_tree,
         }
     }
 
+    fn create_widlmenu() -> (gtk::ScrolledWindow, gtk::TreeView) {
+        let tree = gtk::TreeView::new();
+
+        tree.get_selection().set_mode(gtk::SelectionMode::Single);
+        tree.set_headers_visible(false);
+        tree.set_can_focus(false);
+
+        let renderer = gtk::CellRendererText::new();
+        renderer.set_property_ellipsize(pango::EllipsizeMode::End);
+
+        let word_column = gtk::TreeViewColumn::new();
+        word_column.pack_start(&renderer, true);
+        word_column.add_attribute(&renderer, "text", 0);
+        tree.append_column(&word_column);
+
+        let scroll = gtk::ScrolledWindow::new(None, None);
+        scroll.set_propagate_natural_height(true);
+
+        scroll.add(&tree);
+
+        tree.show_all();
+        scroll.hide();
+
+        (scroll, tree)
+    }
+
     pub fn show_level(&mut self, ctx: &CmdLineContext) {
         let mut state = self.state.borrow_mut();
         let render_state = state.render_state.clone();
@@ -405,6 +445,19 @@ impl CmdLine {
             .unwrap()
             .set_mode_info(mode_info);
     }
+
+    pub fn show_wildmenu(&self, items: Vec<String>) {
+        let list_store = gtk::ListStore::new(&vec![gtk::Type::String; 1]);
+        for item in items {
+            list_store.insert_with_values(None, &[0], &[&item]);
+        }
+        self.wild_tree.set_model(&list_store);
+        self.wild_scroll.show();
+    }
+
+    pub fn hide_wildmenu(&self) {
+        self.wild_scroll.hide();
+    }
 }
 
 fn gtk_draw(ctx: &cairo::Context, state: &Arc<UiMutex<State>>) -> Inhibit {

src/nvim/redraw_handler.rs

@@ -110,6 +110,8 @@ pub fn call_gui_event(
                 .ok_or_else(|| "Nvim not initialized".to_owned())
                 .and_then(|mut nvim| {
                     nvim.set_option(UiOption::ExtCmdline(try_uint!(args[1]) == 1))
+                        .map_err(|e| e.to_string())?;
+                    nvim.set_option(UiOption::ExtWildmenu(try_uint!(args[1]) == 1))
                         .map_err(|e| e.to_string())
                 })?,
             opt => error!("Unknown option {}", opt),
@@ -229,6 +231,8 @@ pub fn call(
         "cmdline_block_hide" => ui.cmdline_block_hide(),
         "cmdline_pos" => call!(ui->cmdline_pos(args: uint, uint)),
         "cmdline_special_char" => call!(ui->cmdline_special_char(args: str, bool, uint)),
+        "wildmenu_show" => call!(ui->wildmenu_show(args: ext)),
+        "wildmenu_hide" => ui.wildmenu_hide(),
         _ => {
             warn!("Event {}({:?})", method, args);
             RepaintMode::Nothing

src/popup_menu.rs

@@ -152,7 +152,7 @@ impl State {
             list_store.insert_with_values(None, &all_column_ids, &line_array[..]);
         }
 
-        self.tree.set_model(Some(&list_store));
+        self.tree.set_model(&list_store);
     }
 
     fn update_css(&self, color_model: &ColorModel) {

src/shell.rs

@@ -1421,6 +1421,16 @@ impl State {
         self.cmd_line.special_char(&*render_state, c, shift, level);
         RepaintMode::Nothing
     }
+
+    pub fn wildmenu_show(&mut self, items: Vec<String>) -> RepaintMode {
+        self.cmd_line.show_wildmenu(items);
+        RepaintMode::Nothing
+    }
+
+    pub fn wildmenu_hide(&mut self) -> RepaintMode {
+        self.cmd_line.hide_wildmenu();
+        RepaintMode::Nothing
+    }
 }
 
 impl CursorRedrawCb for State {