add stub renderable for muxed tab

src/server/tab.rs

@@ -4,15 +4,20 @@ use crate::mux::tab::{alloc_tab_id, Tab, TabId};
 use crate::server::domain::ClientInner;
 use failure::{bail, Fallible};
 use portable_pty::PtySize;
+use std::cell::RefCell;
 use std::cell::RefMut;
+use std::ops::Range;
 use std::sync::Arc;
 use term::color::ColorPalette;
+use term::{CursorPosition, Line};
 use term::{KeyCode, KeyModifiers, MouseEvent, TerminalHost};
+use termwiz::hyperlink::Hyperlink;
 
 pub struct ClientTab {
     client: Arc<ClientInner>,
     local_tab_id: TabId,
     remote_tab_id: TabId,
+    renderable: RefCell<RenderableState>,
 }
 
 impl ClientTab {
@@ -22,6 +27,7 @@ impl ClientTab {
             client: Arc::clone(client),
             remote_tab_id,
             local_tab_id,
+            renderable: RefCell::new(RenderableState { dirty: true }),
         }
     }
 }
@@ -31,7 +37,7 @@ impl Tab for ClientTab {
         self.local_tab_id
     }
     fn renderer(&self) -> RefMut<dyn Renderable> {
-        panic!("ClientTab::renderer not impl");
+        self.renderable.borrow_mut()
     }
 
     fn get_title(&self) -> String {
@@ -78,3 +84,37 @@ impl Tab for ClientTab {
         self.client.local_domain_id
     }
 }
+
+struct RenderableState {
+    dirty: bool,
+}
+
+impl Renderable for RenderableState {
+    fn get_cursor_position(&self) -> CursorPosition {
+        CursorPosition::default()
+    }
+
+    fn get_dirty_lines(&self) -> Vec<(usize, &Line, Range<usize>)> {
+        vec![]
+    }
+
+    fn has_dirty_lines(&self) -> bool {
+        self.dirty
+    }
+
+    fn make_all_lines_dirty(&mut self) {
+        self.dirty = true;
+    }
+
+    fn clean_dirty_lines(&mut self) {
+        self.dirty = false;
+    }
+
+    fn current_highlight(&self) -> Option<Arc<Hyperlink>> {
+        None
+    }
+
+    fn physical_dimensions(&self) -> (usize, usize) {
+        (24, 80)
+    }
+}