Scrollbar initial values

src/ui/dashboard/model.rs

@@ -4,7 +4,7 @@ use crate::i18n::t;
 use ratatui::widgets::ScrollbarState;
 use rayon::prelude::*;
 
-const BORDER_LINES_VIEW: usize = 3;
+pub const BORDER_LINES_VIEW: usize = 3;
 
 #[derive(Debug, Clone, PartialEq)]
 pub enum MonitorStatus {
@@ -37,6 +37,7 @@ pub struct DashboardViewState {
     pub error_message: Option<String>,
     pub auto_refresh_interval: u32,
     pub scroll_state: ScrollbarState,
+    content_length: usize,
 }
 
 impl DashboardViewState {
@@ -49,6 +50,7 @@ impl DashboardViewState {
             error_message: None,
             auto_refresh_interval: 300,
             scroll_state: ScrollbarState::new(0),
+            content_length: 0,
         }
     }
 
@@ -75,6 +77,7 @@ impl DashboardViewState {
             error_message: None,
             auto_refresh_interval: data.auto_refresh_interval.max(30),
             scroll_state: ScrollbarState::new(content_length.saturating_sub(1)),
+            content_length,
         }
     }
 
@@ -83,7 +86,7 @@ impl DashboardViewState {
     }
 
     pub fn show_vertical_scrollbar(&self, height: u16) -> bool {
-        height < self.get_all_monitors().len() as u16
+        height < self.content_length as u16
     }
 }