From e780e6c829f028ed7430c458f6002ac7c5409174 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Thu, 17 Sep 2020 22:15:17 +0200
Subject: rust: Switch buffers using mouse

---
 rust/src/main.rs | 59 ++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 40 insertions(+), 19 deletions(-)

(limited to 'rust/src')

diff --git a/rust/src/main.rs b/rust/src/main.rs
index 937cc88..1ce64c6 100644
--- a/rust/src/main.rs
+++ b/rust/src/main.rs
@@ -9,7 +9,7 @@ use once_cell::sync::Lazy;
 use tokio::{runtime, task};
 use tokio::sync::Mutex as AsyncMutex;
 use termion::{clear, color, cursor};
-use termion::event::Key;
+use termion::event::{Event, Key, MouseEvent, MouseButton};
 use termion::raw::{IntoRawMode, RawTerminal};
 use termion::input::{TermRead, MouseTerminal};
 use termion::screen::AlternateScreen;
@@ -315,19 +315,16 @@ impl App {
         }
     }
 
-    async fn switch_buffer(self: &Arc<Self>, delta: isize) -> io::Result<()> {
-        {
-            let mut state = self.state.lock().await;
-            let current_index =
-                    state.roomlist.iter().enumerate()
-                                  .filter(|&t| *t.1 == state.currentroom)
-                                  .map(|t| t.0)
-                                  .next().unwrap_or(0);
-            let index = (current_index as isize + delta)
-                            .max(0).min(state.roomlist.len() as isize - 1);
-            state.currentroom = state.roomlist[index as usize].clone();
-        }
-        self.full_redraw().await
+    async fn switch_buffer_rel(self: &Arc<Self>, delta: isize) -> io::Result<()> {
+        let mut state = self.state.lock().await;
+        let current_index =
+                state.roomlist.iter().enumerate()
+                              .filter(|&t| *t.1 == state.currentroom)
+                              .map(|t| t.0)
+                              .next().unwrap_or(0);
+        let index = (current_index as isize + delta)
+                        .max(0).min(state.roomlist.len() as isize - 1);
+        state.switch_buffer(index as usize)
     }
 
     // Returns whether application should quit
@@ -335,8 +332,8 @@ impl App {
         match key {
             Key::Ctrl('c') => { return Ok(true); }
             Key::Ctrl('l') => self.full_redraw().await?,
-            Key::F(5) => self.switch_buffer(-1).await?,
-            Key::F(6) => self.switch_buffer(1).await?,
+            Key::F(5) => self.switch_buffer_rel(-1).await?,
+            Key::F(6) => self.switch_buffer_rel(1).await?,
             _ => {
                 let submitted = {
                     let mut state = self.state.lock().await;
@@ -355,6 +352,15 @@ impl App {
         Ok(false)
     }
 
+    async fn on_mouse(self: &Arc<Self>, x: u16, y: u16) -> io::Result<()> {
+        let mut state = self.state.lock().await;
+        if x < state.layout.rlsepx && usize::from(y) < state.roomlist.len() {
+            state.switch_buffer(usize::from(y))?;
+        }
+
+        Ok(())
+    }
+
     // Returns whether application should quit
     async fn handle_input(self: &Arc<Self>, line: &str) -> io::Result<bool> {
         let parsed = if line.starts_with("//") {
@@ -497,6 +503,11 @@ impl State {
         self.rooms.get_mut(room).unwrap().history.push(item);
         self.full_redraw()
     }
+
+    fn switch_buffer(&mut self, index: usize) -> io::Result<()> {
+        self.currentroom = self.roomlist[index].clone();
+        self.full_redraw()
+    }
 }
 
 async fn pushchan_thread(mut chan: mpsc::Receiver<PushMessage>, app: Arc<App>) {
@@ -541,9 +552,19 @@ async fn async_main() -> io::Result<()> {
         app_clone.fetch_rooms_list().await.unwrap();
     });
 
-    for key in io::stdin().keys() {
-        if app.on_key(key?).await? {
-            break;
+    for event in io::stdin().events() {
+        match event? {
+            Event::Key(key) => {
+                if app.on_key(key).await? {
+                    break;
+                }
+            }
+
+            Event::Mouse(MouseEvent::Press(MouseButton::Left, x, y)) => {
+                app.on_mouse(x - 1, y - 1).await?;
+            }
+
+            _ => {}
         }
     }
 
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