From ab2cc1340f05197f93ba65e3850da4468aee41aa Mon Sep 17 00:00:00 2001
From: afonsofrancof <afonso@francof.net>
Date: Thu, 8 Aug 2024 22:12:34 +0100
Subject: [PATCH] Added FloatingText class. It shows text in a float

---
 src/list.rs            |  6 ++--
 src/preview_content.rs | 82 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 85 insertions(+), 3 deletions(-)
 create mode 100644 src/preview_content.rs

diff --git a/src/list.rs b/src/list.rs
index a60f89d1..c6897397 100644
--- a/src/list.rs
+++ b/src/list.rs
@@ -1,5 +1,5 @@
 use crate::{
-    float::Float, preview_content::PreviewContent, running_command::Command, state::AppState,
+    float::Float, preview_content::FloatingText, running_command::Command, state::AppState,
 };
 use crossterm::event::{KeyCode, KeyEvent, KeyEventKind};
 use ego_tree::{tree, NodeId};
@@ -33,7 +33,7 @@ pub struct CustomList {
     // This stores the filtered tree
     filtered_items: Vec<ListNode>,
     // This is the preview window for the commands
-    preview_float: Float<PreviewContent>,
+    preview_float: Float<FloatingText>,
 }
 
 impl CustomList {
@@ -416,7 +416,7 @@ impl CustomList {
                 };
 
                 self.preview_float
-                    .set_content(Some(PreviewContent::new(lines)));
+                    .set_content(Some(FloatingText::new(lines)));
             }
         }
     }
diff --git a/src/preview_content.rs b/src/preview_content.rs
new file mode 100644
index 00000000..195ac24c
--- /dev/null
+++ b/src/preview_content.rs
@@ -0,0 +1,82 @@
+use crate::float::FloatContent;
+use crossterm::event::{KeyCode, KeyEvent};
+use ratatui::{
+    layout::Rect,
+    style::{Style, Stylize},
+    text::Line,
+    widgets::{Block, Borders, List},
+    Frame,
+};
+
+pub struct FloatingText {
+    text: Vec<String>,
+    scroll: usize,
+}
+
+impl FloatingText {
+    pub fn new(text: Vec<String>) -> Self {
+        Self { text, scroll: 0 }
+    }
+
+    fn scroll_down(&mut self) {
+        if self.scroll + 1 < self.text.len() {
+            self.scroll += 1;
+        }
+    }
+
+    fn scroll_up(&mut self) {
+        if self.scroll > 0 {
+            self.scroll -= 1;
+        }
+    }
+}
+
+impl FloatContent for FloatingText {
+    fn draw(&mut self, frame: &mut Frame, area: Rect) {
+        // Define the Block with a border and background color
+        let block = Block::default()
+            .borders(Borders::ALL)
+            .style(Style::default());
+
+        // Draw the Block first
+        frame.render_widget(block.clone(), area);
+
+        // Calculate the inner area to ensure text is not drawn over the border
+        let inner_area = block.inner(area);
+
+        // Create the list of lines to be displayed
+        let lines: Vec<Line> = self
+            .text
+            .iter()
+            .skip(self.scroll)
+            .take(inner_area.height as usize)
+            .map(|line| Line::from(line.as_str()))
+            .collect();
+
+        // Create list widget
+        let list = List::new(lines)
+            .block(Block::default())
+            .highlight_style(Style::default().reversed());
+
+        // Render the list inside the bordered area
+        frame.render_widget(list, inner_area);
+    }
+
+    fn handle_key_event(&mut self, key: &KeyEvent) -> bool {
+        match key.code {
+            KeyCode::Down | KeyCode::Char('j') => {
+                self.scroll_down();
+                true
+            }
+            KeyCode::Up | KeyCode::Char('k') => {
+                self.scroll_up();
+                true
+            }
+            _ => false,
+        }
+    }
+
+    fn is_finished(&self) -> bool {
+        true
+    }
+}