working to analyze timing issues

analyzer/tui/navigation.py

@@ -0,0 +1,77 @@
+"""
+Navigation and input handling for the TUI
+"""
+
+import curses
+from typing import List
+from ..models import FlowStats
+
+
+class NavigationHandler:
+    """Handles navigation and input for the TUI"""
+    
+    def __init__(self):
+        self.current_view = 'main'  # main, dissection
+        self.selected_flow = 0
+        self.scroll_offset = 0
+        self.show_timeline = True  # Toggle for bottom timeline plot
+    
+    def handle_input(self, key: int, flows_list: List[FlowStats]) -> str:
+        """
+        Handle keyboard input and return action
+        
+        Returns:
+            Action string: 'quit', 'view_change', 'selection_change', 'none'
+        """
+        if key == ord('q'):
+            return 'quit'
+        elif key == ord('d'):
+            self.current_view = 'dissection'
+            return 'view_change'
+        elif key == ord('m') or key == 27:  # 'm' or ESC to return to main
+            self.current_view = 'main'
+            return 'view_change'
+        elif key == curses.KEY_UP and self.current_view == 'main':
+            self.selected_flow = max(0, self.selected_flow - 1)
+            return 'selection_change'
+        elif key == curses.KEY_DOWN and self.current_view == 'main':
+            max_items = self._get_total_display_items(flows_list)
+            self.selected_flow = min(max_items - 1, self.selected_flow + 1)
+            return 'selection_change'
+        elif key == ord('t'):  # Toggle timeline plot
+            self.show_timeline = not self.show_timeline
+            return 'view_change'
+        elif key == curses.KEY_PPAGE and self.current_view == 'main':  # Page Up
+            self.selected_flow = max(0, self.selected_flow - 10)
+            return 'selection_change'
+        elif key == curses.KEY_NPAGE and self.current_view == 'main':  # Page Down
+            max_items = self._get_total_display_items(flows_list)
+            self.selected_flow = min(max_items - 1, self.selected_flow + 10)
+            return 'selection_change'
+        elif key == curses.KEY_HOME and self.current_view == 'main':  # Home
+            self.selected_flow = 0
+            return 'selection_change'
+        elif key == curses.KEY_END and self.current_view == 'main':  # End
+            max_items = self._get_total_display_items(flows_list)
+            self.selected_flow = max_items - 1
+            return 'selection_change'
+        
+        return 'none'
+    
+    def _get_total_display_items(self, flows_list: List[FlowStats]) -> int:
+        """Calculate total number of selectable items (flows + frame types)"""
+        total = 0
+        for flow in flows_list:
+            total += 1  # Flow itself
+            total += len(flow.frame_types)  # Frame types under this flow
+        return total
+    
+    def get_status_bar_text(self) -> str:
+        """Get status bar text based on current view"""
+        if self.current_view == 'main':
+            timeline_status = "ON" if self.show_timeline else "OFF"
+            return f"[↑↓]navigate [PgUp/PgDn]scroll [t]imeline:{timeline_status} [d]issection [q]uit"
+        elif self.current_view == 'dissection':
+            return "[m]ain view [q]uit"
+        else:
+            return "[m]ain [d]issection [q]uit"