init

src/app.rs

@@ -0,0 +1,55 @@
+use crate::env::EnvVar;
+
+pub enum Mode {
+    Normal,
+    Insert,
+}
+
+pub struct App {
+    pub vars: Vec<EnvVar>,
+    pub selected: usize,
+    pub mode: Mode,
+    pub running: bool,
+    pub status_message: Option<String>,
+}
+
+impl App {
+    pub fn new(vars: Vec<EnvVar>) -> Self {
+        Self {
+            vars,
+            selected: 0,
+            mode: Mode::Normal,
+            running: true,
+            status_message: None,
+        }
+    }
+
+    pub fn next(&mut self) {
+        if !self.vars.is_empty() {
+            self.selected = (self.selected + 1) % self.vars.len();
+        }
+    }
+
+    pub fn previous(&mut self) {
+        if !self.vars.is_empty() {
+            if self.selected == 0 {
+                self.selected = self.vars.len() - 1;
+            } else {
+                self.selected -= 1;
+            }
+        }
+    }
+
+    pub fn enter_insert(&mut self) {
+        self.mode = Mode::Insert;
+    }
+
+    pub fn enter_normal(&mut self) {
+        self.mode = Mode::Normal;
+    }
+
+    #[allow(dead_code)]
+    pub fn quit(&mut self) {
+        self.running = false;
+    }
+}