From 4778e4de6f7588cd0c6cbe91bab98114e5319784 Mon Sep 17 00:00:00 2001
From: Alexandre Bury <alexandre.bury@gmail.com>
Date: Thu, 22 Mar 2018 14:15:57 -0700
Subject: [PATCH] Implement EditView::important_area

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

diff --git a/src/views/edit_view.rs b/src/views/edit_view.rs
index 8cdf5bd..7fd1d56 100644
--- a/src/views/edit_view.rs
+++ b/src/views/edit_view.rs
@@ -1,6 +1,7 @@
 use {Cursive, Printer, With};
 use direction::Direction;
 use event::{Callback, Event, EventResult, Key, MouseEvent};
+use rect::Rect;
 use std::cell::RefCell;
 use std::rc::Rc;
 use theme::{ColorStyle, Effect};
@@ -681,4 +682,22 @@ impl View for EditView {
 
         EventResult::Consumed(self.make_edit_cb())
     }
+
+    fn important_area(&self, _: Vec2) -> Rect {
+        let char_width = if self.cursor >= self.content.len() {
+            // Show a space if we're at the end of the content
+            1
+        } else {
+            // Otherwise look at the selected character.
+            self.content[self.cursor..]
+                .graphemes(true)
+                .next()
+                .unwrap()
+                .width()
+        };
+
+        let x = self.content[..self.cursor].width();
+
+        Rect::from_size((x, 0), (char_width, 1))
+    }
 }