From 8f04356baa9c99ac2b018197c9e9168f5b48c030 Mon Sep 17 00:00:00 2001
From: Alexandre Bury <alexandre.bury@gmail.com>
Date: Fri, 23 Mar 2018 17:00:46 -0700
Subject: [PATCH] Implement ListView::important_area

---
 src/views/list_view.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/views/list_view.rs b/src/views/list_view.rs
index ab51c76..b7785f8 100644
--- a/src/views/list_view.rs
+++ b/src/views/list_view.rs
@@ -3,6 +3,7 @@ use Printer;
 use With;
 use direction;
 use event::{Callback, Event, EventResult, Key, MouseButton, MouseEvent};
+use rect::Rect;
 use std::any::Any;
 use std::rc::Rc;
 use unicode_width::UnicodeWidthStr;
@@ -494,4 +495,22 @@ impl View for ListView {
             Err(())
         }
     }
+
+    fn important_area(&self, size: Vec2) -> Rect {
+        if self.children.is_empty() {
+            return Rect::from((0, 0));
+        }
+
+        let labels_width = self.labels_width();
+
+        let area = match self.children[self.focus] {
+            ListChild::Row(_, ref view) => {
+                let available = Vec2::new(size.x - labels_width - 1, 1);
+                view.important_area(available) + (labels_width, 0)
+            }
+            ListChild::Delimiter => Rect::from_size((0, 0), (size.x, 1)),
+        };
+
+        area + (0, self.focus)
+    }
 }