start impl of search mode

3 files changed, 106 insertions, 14 deletions

diff --git a/src/frontend/app.rs b/src/frontend/app.rs
index 1a8eab7..75a6ede 100644
--- a/src/frontend/app.rs
+++ b/src/frontend/app.rs
@@ -30,7 +30,15 @@ pub type AppResult<T> = std::result::Result<T, Box<dyn error::Error>>;
 pub enum CurrentArea {
     EntryArea,
     TagArea,
-    // SearchArea,
+    SearchArea,
+    HelpArea,
+}
+
+// Check which area was active when popup set active
+#[derive(Debug)]
+pub enum FormerArea {
+    EntryArea,
+    TagArea,
 }
 
 // Application.
@@ -50,6 +58,10 @@ pub struct App {
     pub scroll_info: u16,
     // area
     pub current_area: CurrentArea,
+    // mode for popup window
+    pub former_area: Option<FormerArea>,
+    // search string
+    pub search_string: String,
 }
 
 // Define the fundamental List
@@ -176,6 +188,8 @@ impl Default for App {
             entry_table,
             scroll_info: 0,
             current_area,
+            former_area: None,
+            search_string: String::new(),
         }
     }
 }
@@ -199,18 +213,34 @@ impl App {
         match self.current_area {
             CurrentArea::EntryArea => self.current_area = CurrentArea::TagArea,
             CurrentArea::TagArea => self.current_area = CurrentArea::EntryArea,
+            CurrentArea::SearchArea => {
+                if let Some(former_area) = &self.former_area {
+                    match former_area {
+                        FormerArea::EntryArea => self.current_area = CurrentArea::EntryArea,
+                        FormerArea::TagArea => self.current_area = CurrentArea::TagArea,
+                    }
+                }
+            }
+            CurrentArea::HelpArea => {
+                if let Some(former_area) = &self.former_area {
+                    match former_area {
+                        FormerArea::EntryArea => self.current_area = CurrentArea::EntryArea,
+                        FormerArea::TagArea => self.current_area = CurrentArea::TagArea,
+                    }
+                }
+            }
         }
     }
 
     pub fn scroll_info_down(&mut self) {
-        self.scroll_info = (self.scroll_info + 1);
+        self.scroll_info = self.scroll_info + 1;
     }
 
     pub fn scroll_info_up(&mut self) {
         if self.scroll_info == 0 {
             {}
         } else {
-            self.scroll_info = (self.scroll_info - 1);
+            self.scroll_info = self.scroll_info - 1;
         }
     }
 
@@ -218,6 +248,7 @@ impl App {
         match self.current_area {
             CurrentArea::EntryArea => self.entry_table.entry_table_state.select(None),
             CurrentArea::TagArea => self.tag_list.tag_list_state.select(None),
+            _ => {}
         }
         // self.tag_list.tag_list_state.select(None);
     }
@@ -227,6 +258,7 @@ impl App {
         match self.current_area {
             CurrentArea::EntryArea => self.entry_table.entry_table_state.select_next(),
             CurrentArea::TagArea => self.tag_list.tag_list_state.select_next(),
+            _ => {}
         }
         // self.tag_list.tag_list_state.select_next();
     }
@@ -235,6 +267,7 @@ impl App {
         match self.current_area {
             CurrentArea::EntryArea => self.entry_table.entry_table_state.select_previous(),
             CurrentArea::TagArea => self.tag_list.tag_list_state.select_previous(),
+            _ => {}
         }
         // self.tag_list.tag_list_state.select_previous();
     }
@@ -244,6 +277,7 @@ impl App {
         match self.current_area {
             CurrentArea::EntryArea => self.entry_table.entry_table_state.select_first(),
             CurrentArea::TagArea => self.tag_list.tag_list_state.select_first(),
+            _ => {}
         }
         // self.tag_list.tag_list_state.select_first();
     }
@@ -253,6 +287,7 @@ impl App {
         match self.current_area {
             CurrentArea::EntryArea => self.entry_table.entry_table_state.select_last(),
             CurrentArea::TagArea => self.tag_list.tag_list_state.select_last(),
+            _ => {}
         }
         // self.tag_list.tag_list_state.select_last();
     }
diff --git a/src/frontend/handler.rs b/src/frontend/handler.rs
index 73f30ae..27aa8de 100644
--- a/src/frontend/handler.rs
+++ b/src/frontend/handler.rs
@@ -18,7 +18,7 @@
 use crate::frontend::app::{App, AppResult};
 use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
 
-use super::app::CurrentArea;
+use super::app::{CurrentArea, FormerArea};
 
 /// Handles the key events and updates the state of [`App`].
 pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
@@ -61,6 +61,10 @@ pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
             KeyCode::Char('G') | KeyCode::End => {
                 app.select_last();
             }
+            KeyCode::Char('/') => {
+                app.former_area = Some(FormerArea::TagArea);
+                app.current_area = CurrentArea::SearchArea;
+            }
             KeyCode::Tab | KeyCode::BackTab => {
                 app.toggle_area();
             }
@@ -86,11 +90,47 @@ pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
             KeyCode::Char('y') => {
                 App::yank_text(&app.get_selected_citekey());
             }
+            KeyCode::Char('/') => {
+                app.former_area = Some(FormerArea::EntryArea);
+                app.current_area = CurrentArea::SearchArea;
+            }
             KeyCode::Tab | KeyCode::BackTab => {
                 app.toggle_area();
             }
             _ => {}
         },
+        // Keycodes for the search area (popup)
+        CurrentArea::SearchArea => match key_event.code {
+            KeyCode::Esc => {
+                app.toggle_area();
+                app.former_area = None;
+                app.search_string.clear();
+            }
+            KeyCode::Enter => {
+                // TODO: run function for filtering the list
+                app.toggle_area();
+                app.former_area = None;
+                app.search_string.clear();
+            }
+            KeyCode::Backspace => {
+                app.search_string.pop();
+            }
+            KeyCode::Char(search_pattern) => {
+                app.search_string.push(search_pattern);
+            }
+            _ => {}
+        },
+        // Keycodes for the help area (popup)
+        CurrentArea::HelpArea => match key_event.code {
+            KeyCode::Char('q') => {
+                app.quit();
+            }
+            KeyCode::Esc => {
+                app.toggle_area();
+                app.former_area = None;
+            }
+            _ => {}
+        },
     }
     Ok(())
 }
diff --git a/src/frontend/ui.rs b/src/frontend/ui.rs
index 5413194..0e44e5c 100644
--- a/src/frontend/ui.rs
+++ b/src/frontend/ui.rs
@@ -15,7 +15,6 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 /////
 
-use biblatex::ChunksExt;
 use ratatui::{
     buffer::Buffer,
     layout::{Constraint, Layout, Rect},
@@ -26,8 +25,8 @@ use ratatui::{
     symbols,
     text::{Line, Span, Text},
     widgets::{
-        Block, Cell, HighlightSpacing, List, ListItem, Padding, Paragraph, Row, StatefulWidget,
-        Table, TableState, Widget, Wrap,
+        Block, Borders, Cell, HighlightSpacing, List, ListItem, Padding, Paragraph, Row,
+        StatefulWidget, Table, Widget, Wrap,
     },
 };
 
@@ -36,7 +35,7 @@ use crate::{
     frontend::app::{App, TagListItem},
 };
 
-use super::app::EntryTableItem;
+use super::app::CurrentArea;
 
 const MAIN_BLUE_COLOR: Color = Color::Indexed(39);
 const MAIN_PURPLE_COLOR: Color = Color::Indexed(129);
@@ -75,7 +74,7 @@ impl Widget for &mut App {
         let [header_area, main_area, footer_area] = Layout::vertical([
             Constraint::Length(1),
             Constraint::Fill(1),
-            Constraint::Length(1),
+            Constraint::Length(3),
         ])
         .areas(area);
 
@@ -87,7 +86,7 @@ impl Widget for &mut App {
 
         // Render header and footer
         App::render_header(header_area, buf);
-        App::render_footer(footer_area, buf);
+        self.render_footer(footer_area, buf);
         // Render list area where entry gets selected
         // self.render_entry_table(list_area, buf);
         self.render_entrytable(list_area, buf);
@@ -107,10 +106,28 @@ impl App {
             .render(area, buf);
     }
 
-    pub fn render_footer(area: Rect, buf: &mut Buffer) {
-        Paragraph::new("Use j/k to move, h to unselect, g/G to go top/bottom.")
-            .centered()
-            .render(area, buf);
+    pub fn render_footer(&mut self, area: Rect, buf: &mut Buffer) {
+        match &self.current_area {
+            CurrentArea::SearchArea => {
+                let block = Block::bordered()
+                    .title(" Search Entries ")
+                    .border_set(symbols::border::ROUNDED);
+                Paragraph::new(self.search_string.clone())
+                    .block(block)
+                    .render(area, buf);
+            }
+            _ => {
+                let block = Block::bordered()
+                    .title(Line::raw(" Basic Commands ").centered())
+                    .border_set(symbols::border::ROUNDED);
+                Paragraph::new(
+                    "Use j/k to move, g/G to go top/bottom, y to yank the current citekey",
+                )
+                .block(block)
+                .centered()
+                .render(area, buf);
+            }
+        }
     }
 
     pub fn render_entrytable(&mut self, area: Rect, buf: &mut Buffer) {