added colours, select and delete ops, refac

src/app/mod.rs

@@ -3,6 +3,8 @@ pub mod entry;
 mod settings;
 
 pub mod status;
+use ratatui::widgets::TableState;
+
 use crate::app::{
     entry::Entry,
     settings::Settings,
@@ -18,6 +20,7 @@ pub struct AppState {
     pub currentlyEditing: Option<EditingField>,
     pub entries: Vec<Entry>,
     pub confDir: String,
+    pub tableState: TableState,
 }
 
 impl AppState {
@@ -32,6 +35,7 @@ impl AppState {
             screen: CurrentScreen::Main,
             entries: settings.entries,
             confDir,
+            tableState: TableState::default().with_selected(0),
         }
     }
 
@@ -49,7 +53,8 @@ impl AppState {
                 self.fromPort = String::new();
                 self.toPort = String::new();
                 self.currentlyEditing = None;
-
+                self.tableState
+                    .select(Some(self.entries.len() - 1 as usize));
                 EntryCreation::Success
             }
             _ => EntryCreation::PortValidationError,
@@ -104,4 +109,40 @@ impl AppState {
         settings.entries = self.entries.clone();
         settings.save(&self.confDir);
     }
+
+    pub fn nextRow(&mut self) {
+        let i = match self.tableState.selected() {
+            Some(i) => {
+                if i >= self.entries.len() - 1 {
+                    0
+                } else {
+                    i + 1
+                }
+            }
+            None => 0,
+        };
+        self.tableState.select(Some(i));
+    }
+
+    pub fn prevRow(&mut self) {
+        let i = match self.tableState.selected() {
+            Some(i) => {
+                if i == 0 {
+                    self.entries.len() - 1
+                } else {
+                    i - 1
+                }
+            }
+            None => 0,
+        };
+        self.tableState.select(Some(i));
+    }
+
+    pub fn delCur(&mut self) {
+        if self.entries.is_empty() {
+            self.screen = CurrentScreen::Main;
+            return;
+        }
+        self.entries.remove(self.tableState.selected().unwrap());
+    }
 }