Feat/reorder tabs (#67)

* add tab reordering

* update CHANGELOG

CHANGELOG.md

@@ -23,6 +23,7 @@ and `Removed`.
   - Linux: `$HOME/.config/tickrs/config.yml`
   - macOS: `$HOME/Library/Application Support/tickrs/config.yml`
   - Windows: `%APPDATA%\tickrs\config.yml`
+- Current tab can be reordered by using `Ctrl + Left / Right`
 
 ## [0.10.2] - 2021-02-10
 

src/event.rs

@@ -98,9 +98,28 @@ pub fn handle_keys_display_stock(
             _ => {}
         }
     } else if key_event.modifiers == KeyModifiers::CONTROL {
-        if let KeyCode::Char('c') = key_event.code {
-            cleanup_terminal();
-            std::process::exit(0);
+        match key_event.code {
+            KeyCode::Left => {
+                let new_idx = if app.current_tab == 0 {
+                    app.stocks.len() - 1
+                } else {
+                    app.current_tab - 1
+                };
+                app.stocks.swap(app.current_tab, new_idx);
+                app.current_tab = new_idx;
+                let _ = request_redraw.try_send(());
+            }
+            KeyCode::Right => {
+                let new_idx = (app.current_tab + 1) % app.stocks.len();
+                app.stocks.swap(app.current_tab, new_idx);
+                app.current_tab = new_idx;
+                let _ = request_redraw.try_send(());
+            }
+            KeyCode::Char('c') => {
+                cleanup_terminal();
+                std::process::exit(0);
+            }
+            _ => {}
         }
     } else if key_event.modifiers == KeyModifiers::SHIFT {
         if let KeyCode::Char('?') = key_event.code {

src/widget/help.rs

@@ -18,6 +18,9 @@ Remove Stock:
 Change Tab:
   - <Tab>: next stock
   - <Shift+Tab>: previous stock
+Reorder Current Tab:
+  - <Ctrl+Left>: move 1 tab left
+  - <Ctrl+Right>: move 1 tab right
 Change Time Frame:
   - <Right>: next time frame
   - <Left>: previous time frame
@@ -36,8 +39,8 @@ Graphing Display:
   - x: toggle labels
 "#;
 
-pub const HELP_WIDTH: u16 = 36;
-pub const HELP_HEIGHT: u16 = 30;
+pub const HELP_WIDTH: u16 = 37;
+pub const HELP_HEIGHT: u16 = 33;
 
 #[derive(Copy, Clone)]
 pub struct HelpWidget {}