fixed up writing to/deleting (but overflows still happen it seems)

src/display/body.rs

@@ -28,7 +28,7 @@ impl Body {
                 .nextline_after_text(
                     0,
                     HorizontalAlignment::Left,
-                    &env.frame,
+                    env.frame.inner_size().0,
                 );
         write!(screen, "{}", env.frame.make(echo_comps))?;
         screen.flush()?;
@@ -82,25 +82,41 @@ impl Page for Body {
 #[derive(Debug, Clone, Default)]
 pub struct SigninPage {
     hostname: String,
-    username: String,
     cursor: SigninCursorLocation,
     frame: Option<Frame>,
 }
 
 #[derive(Debug, Clone)]
 enum SigninCursorLocation {
-    Hostname(u16),
+    Hostname,
     Ok,
 }
 
 impl Default for SigninCursorLocation {
     fn default() -> Self {
-        Self::Ok
+        Self::Hostname
     }
 }
 
 impl SigninPage {
     #[inline]
+    fn next(&mut self) {
+        self.cursor = match self.cursor {
+            SigninCursorLocation::Hostname => {
+                SigninCursorLocation::Ok
+            }
+            SigninCursorLocation::Ok => {
+                SigninCursorLocation::Hostname
+            }
+        }
+    }
+
+    #[inline]
+    fn previous(&mut self) {
+        // Don't tell them this neat trick
+        self.next()
+    }
+
     fn draw(
         &self,
         highlight: ColorSet,
@@ -113,6 +129,11 @@ impl SigninPage {
         let (w, _) = frame.inner_size();
         let exp_w = w / 3;
 
+        let (hostname_theme, ok_theme) = match self.cursor {
+            SigninCursorLocation::Hostname => (highlight, normal),
+            SigninCursorLocation::Ok => (normal, highlight),
+        };
+
         vec![
             frame
                 .prefix_centered_goto(
@@ -126,7 +147,7 @@ impl SigninPage {
             frame
                 .prefix_centered_goto(
                     self.field(
-                        highlight,
+                        hostname_theme,
                         normal,
                         exp_w,
                         "hostname",
@@ -135,18 +156,11 @@ impl SigninPage {
                     HOSTNAME_Y,
                 )
                 .0,
-            frame
-                .prefix_centered_goto(
-                    self.field(
-                        highlight,
-                        normal,
-                        exp_w,
-                        "username",
-                        &self.username,
-                    ),
-                    OK_Y,
-                )
+            vec![Component::Theme(ok_theme)],
+            HorizontalAlignment::Center
+                .align(Text::Normal("[ok]".into()), w, OK_Y)
                 .0,
+            vec![Component::Theme(normal)],
         ]
         .into_iter()
         .flatten()
@@ -181,6 +195,16 @@ impl SigninPage {
         ]
         .into()
     }
+
+    #[inline]
+    fn char(&mut self, c: char) {
+        match self.cursor {
+            SigninCursorLocation::Hostname => {
+                self.hostname.push(c);
+            }
+            SigninCursorLocation::Ok => {}
+        }
+    }
 }
 
 impl Page for SigninPage {
@@ -192,10 +216,16 @@ impl Page for SigninPage {
     ) -> Result<()> {
         match event {
             Event::Key(key) => match key {
-                termion::event::Key::Char(_) => {}
-                termion::event::Key::Up => {}
-                termion::event::Key::Down => {}
-                termion::event::Key::Backspace => {}
+                termion::event::Key::Char(c) => self.char(c),
+                termion::event::Key::Up => self.next(),
+                termion::event::Key::Down => self.previous(),
+                termion::event::Key::Backspace => {
+                    if let SigninCursorLocation::Hostname =
+                        self.cursor
+                    {
+                        self.hostname.pop();
+                    }
+                }
                 termion::event::Key::Delete => {}
                 termion::event::Key::Left => {}
                 termion::event::Key::Right => {}
@@ -204,6 +234,19 @@ impl Page for SigninPage {
             },
         }
 
+        let fr = self.frame.unwrap();
+        write!(
+            screen,
+            "{}{}{}",
+            env.primary_frame(),
+            fr.frame_str(env.theme.colors.subwin),
+            fr.make(self.draw(
+                env.theme.colors.highlight,
+                env.theme.colors.subwin
+            ))
+        )?;
+        screen.flush()?;
+
         Ok(())
     }
 

src/display/compose.rs

@@ -88,23 +88,22 @@ impl HorizontalAlignment {
     pub fn align(
         &self,
         s: Text,
-        frame: &Frame,
+        body_width: u16,
         y: u16,
     ) -> Components {
-        let (width, _) = frame.size();
         match self {
             Self::Left => {
                 vec![Component::Goto(0, y), Component::String(s)]
             }
             Self::Right => {
                 vec![
-                    Component::Goto(s.len() as u16 - width, y),
+                    Component::Goto(s.len() as u16 - body_width, y),
                     Component::String(s),
                 ]
             }
             Self::Center => {
                 vec![
-                    Component::Goto((width - s.len()) / 2, y),
+                    Component::Goto((body_width - s.len()) / 2, y),
                     Component::String(s),
                 ]
             }
@@ -173,13 +172,13 @@ impl Components {
         self,
         y: u16,
         align: HorizontalAlignment,
-        frame: &Frame,
+        body_width: u16,
     ) -> Self {
         let mut last_y = y;
         let xxx = self.0.into_iter().map(|comp| match comp {
             Component::String(s) => {
                 last_y += 1;
-                align.align(s, frame, last_y).0
+                align.align(s, body_width, last_y).0
             }
             Component::Goto(_, y) => {
                 last_y = y;