history of buffers implemented now

client/src/state/app/state.rs

@@ -5,6 +5,31 @@ use common::proto::multieko2::table_definition::ProfileTreeResponse;
 use crate::modes::handlers::mode_manager::AppMode;
 use crate::ui::handlers::context::DialogPurpose;
 
+/// Represents the distinct views or "buffers" the user can navigate.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum AppView {
+    Intro,
+    Login,
+    Register,
+    Admin,
+    Form(String),
+    Scratch,
+}
+
+impl AppView {
+    /// Returns the display name for the view.
+    pub fn display_name(&self) -> &str {
+        match self {
+            AppView::Intro => "Intro",
+            AppView::Login => "Login",
+            AppView::Register => "Register",
+            AppView::Admin => "Admin Panel",
+            AppView::Form(name) => name.as_str(),
+            AppView::Scratch => "*scratch*",
+        }
+    }
+}
+
 pub struct DialogState {
     pub dialog_show: bool,
     pub dialog_title: String,
@@ -23,6 +48,7 @@ pub struct UiState {
     pub show_login: bool,
     pub show_register: bool,
     pub focus_outside_canvas: bool,
+    pub buffer_history: Vec<AppView>,
     pub dialog: DialogState,
 }
 
@@ -139,6 +165,7 @@ impl Default for UiState {
             show_register: false,
             show_buffer_list: false,
             focus_outside_canvas: false,
+            buffer_history: vec![AppView::Intro],
             dialog: DialogState::default(),
         }
     }
@@ -157,3 +184,12 @@ impl Default for DialogState {
         }
     }
 }
+
+impl UiState {
+    /// Adds the given view to the history if it's different from the last one.
+    pub fn update_buffer_history(&mut self, view: AppView) {
+        if self.buffer_history.last() != Some(&view) {
+            self.buffer_history.push(view.clone());
+        }
+    }
+}