feat: tab alerts (#4)

PR: #4

* feat(POC): initial support for tab notifications

* refactor: use pipe args + take exit code

panes should send a process status like this:

zellij pipe --name zj-status-bar:process_status --args "pane_id=$ZELLIJ_PANE_ID,exit_code=$?"

then the plugin will find the pane's tab using `pane_id`

tab background color will be green/red depending on `exit_code`

* feat: broadcast state to all instances of `zj-status-bar`

broadcast internal state so that new instances "catch up" on alerts already sent.

* chore: refactor

* chore: mutate values in place, avoid cloning state

* chore: refactor

* chore: update pipe msg names

* fix: handle pipe args parse panics

* fix: avoid infinite re-render b/c of timers

* chore: clippy

* Update README.md

* Update README.md

Cargo.toml

@@ -8,5 +8,7 @@ license = "MIT"
 [dependencies]
 ansi_term = "0.12"
 unicode-width = "0.1.8"
-zellij-tile = "0.39.2"
-zellij-tile-utils = "0.39.2"
+zellij-tile = "0.40.0"
+zellij-tile-utils = "0.40.0"
+serde = { version = "1.0.203", features = ["derive"] }
+serde_json = "1.0.117"

README.md

@@ -11,6 +11,7 @@ An opinionated status bar plugin for [`zellij`](https://zellij.dev/) based on th
 ### Features
 * Pane fullscreen indicator
 * Tab indexes
+* [Tab alerts](#tab-alerts)
 
 ### Others
 * No alternate tab colors
@@ -44,6 +45,31 @@ On the first load you need to navigate to the plugin pane and press `y` to accep
 > If you start the plugin pane with [`borderless`](https://zellij.dev/documentation/creating-a-layout#borderless) set to true you won't be able to view it and accept the perms.
 > After accepting permissions you can disable borders again.
 
+## Tab alerts
+
+Always keep an eye on long-running processes, even if they are on different tabs!
+
+[tab-alerts-demo.webm](https://github.com/cristiand391/zj-status-bar/assets/6853656/953d7abf-3011-48d4-ad38-f45c96c3583a)
+
+When running commands via `zw` you'll get a green/red alert (based on the exit code > 0) on the tab section when you are on a different tab.
+The alerts are rendered every 1s and are cleared once you focus on that tab.
+
+Add the `zw` helper to your shell setup:
+
+zsh/bash:
+```zsh
+zw() {
+  eval "$*"
+  zellij pipe --name zj-status-bar:cli:tab_alert --args "pane_id=$ZELLIJ_PANE_ID,exit_code=$?"
+}
+```
+
+then pass it the command you want to watch
+`zw cargo build`
+
+> [!NOTE]  
+> If you want to chain multiple commands make sure to wrap them in quotes (e.g `zw 'sleep 3 && cargo build'`), otherwise your shell will interpret it as 2 different commands and you'll only get an alert about the first one.
+
 ## Development
 
 1. Clone repo: `gh repo clone cristiand391/zj-status-bar`

src/line.rs

@@ -202,7 +202,11 @@ fn tab_line_prefix(
         })
     }
     let mode_part = format!("{:?}", mode).to_uppercase();
-    let mode_part_padded = format!("{:^mode_part_width$}", mode_part, mode_part_width = mode_part.width() + 2);
+    let mode_part_padded = format!(
+        "{:^mode_part_width$}",
+        mode_part,
+        mode_part_width = mode_part.width() + 2
+    );
     let mode_part_len = mode_part_padded.width();
     let mode_part_styled_text = if mode == InputMode::Locked {
         style!(locked_mode_color, bg_color)
@@ -347,7 +351,7 @@ fn swap_layout_status(
                 "{}{}{}",
                 prefix_separator, swap_layout_name, suffix_separator
             );
-            let (part, full_len) = (format!("{}", swap_layout_indicator), swap_layout_name_len);
+            let (part, full_len) = (swap_layout_indicator.to_string(), swap_layout_name_len);
             let short_len = swap_layout_name_len + 1; // 1 is the space between
             if full_len <= max_len {
                 Some(LinePart {