Override Ctrl-C by disabling callback in Cursive

Thanks to @gyscos for the explanation in #22!

Also removed extraneous code that's no longer
needed.

5 files changed, 5 insertions, 10 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 5075c64..ade0cc4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -271,7 +271,6 @@ dependencies = [
  "notify",
  "serde",
  "serde_json",
- "signal-hook",
  "typetag",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index c97e2a4..9cf3639 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,6 @@ typetag = "0.1.4"
 directories = "3.0.1"
 clap = "2.33"
 notify = "4.0"
-signal-hook = "0.1.16"
 
 [dependencies.cursive]
 version = "0.15"
diff --git a/src/app/impl_self.rs b/src/app/impl_self.rs
index 325c53f..c2a24cf 100644
--- a/src/app/impl_self.rs
+++ b/src/app/impl_self.rs
@@ -24,7 +24,6 @@ impl App {
         let (tx, rx) = channel();
         let mut watcher = watcher(tx, Duration::from_secs(1)).unwrap();
         watcher.watch(utils::auto_habit_file(), RecursiveMode::Recursive);
-
         return App {
             habits: vec![],
             focus: 0,
diff --git a/src/app/impl_view.rs b/src/app/impl_view.rs
index b735003..1261208 100644
--- a/src/app/impl_view.rs
+++ b/src/app/impl_view.rs
@@ -85,6 +85,7 @@ impl View for App {
         if self.habits.is_empty() {
             return EventResult::Ignored;
         }
+        let m = self.message.clone();
         match e {
             Event::Key(Key::Right) | Event::Key(Key::Tab) | Event::Char('l') => {
                 self.set_focus(Absolute::Right);
@@ -166,7 +167,7 @@ impl View for App {
                 return EventResult::Consumed(None);
             }
             Event::CtrlChar('c') => {
-                self.message.write().unwrap().set_message("Use the :q command to quit");
+                m.write().unwrap().set_message("Use the :q command to quit");
                 return EventResult::Consumed(None);
             }
 
diff --git a/src/main.rs b/src/main.rs
index d733f97..3ec964a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -50,13 +50,11 @@ fn main() {
             ),
         }
     } else {
+        let mut s = termion().unwrap();
         let app = App::load_state();
-        let m = app.message.clone();
-        unsafe { signal_hook::register(signal_hook::SIGINT, move || {
-            m.write().unwrap().set_message("Use the :q command to quit");
-        }) }.unwrap();
 
-        let mut s = termion().unwrap();
+        // prevent Ctrl-C from killing the app and allow the app to override it.
+        s.clear_global_callbacks(cursive::event::Event::CtrlChar('c'));
 
         let layout = NamedView::new(
             "Frame",
@@ -66,7 +64,6 @@ fn main() {
         s.add_global_callback(':', |s| open_command_window(s));
 
         s.set_theme(theme::theme_gen());
-
         s.run();
     }
 }