support common nav for syntax view (closes #725)

1 files changed, 29 insertions, 0 deletions

diff --git a/src/ui/mod.rs b/src/ui/mod.rs
index 2b4646cd..7734b08d 100644
--- a/src/ui/mod.rs
+++ b/src/ui/mod.rs
@@ -5,6 +5,7 @@ mod stateful_paragraph;
 pub mod style;
 mod syntax_text;
 
+use filetree::MoveSelection;
 pub use scrollbar::draw_scrollbar;
 pub use scrolllist::{draw_list, draw_list_block};
 pub use stateful_paragraph::{
@@ -13,6 +14,8 @@ pub use stateful_paragraph::{
 pub use syntax_text::{AsyncSyntaxJob, SyntaxText};
 use tui::layout::{Constraint, Direction, Layout, Rect};
 
+use crate::keys::SharedKeyConfig;
+
 /// return the scroll position (line) necessary to have the `selection` in view if it is not already
 pub const fn calc_scroll_top(
     current_top: usize,
@@ -109,3 +112,29 @@ pub fn centered_rect_absolute(
         height.min(r.height),
     )
 }
+
+///
+pub fn common_nav(
+    key: crossterm::event::KeyEvent,
+    key_config: &SharedKeyConfig,
+) -> Option<MoveSelection> {
+    if key == key_config.move_down {
+        Some(MoveSelection::Down)
+    } else if key == key_config.move_up {
+        Some(MoveSelection::Up)
+    } else if key == key_config.page_up {
+        Some(MoveSelection::PageUp)
+    } else if key == key_config.page_down {
+        Some(MoveSelection::PageDown)
+    } else if key == key_config.move_right {
+        Some(MoveSelection::Right)
+    } else if key == key_config.move_left {
+        Some(MoveSelection::Left)
+    } else if key == key_config.home || key == key_config.shift_up {
+        Some(MoveSelection::Top)
+    } else if key == key_config.end || key == key_config.shift_down {
+        Some(MoveSelection::End)
+    } else {
+        None
+    }
+}