add icons and navigation

assets/scripts/navigation.lua

@@ -3,7 +3,7 @@
 
 -- Screen registry - maps screen names to RML file paths
 local screens = {
-    home = "demo.rml",
+    home = "screens/home.rml",
     lock = "screens/lock.rml",
     dialer = "screens/dialer.rml",
     contacts = "screens/contacts.rml",
@@ -12,27 +12,36 @@ local screens = {
     browser = "screens/browser.rml"
 }
 
--- Navigation history stack
-local history = {}
+-- Use global state to persist across document loads
+-- Initialize only if not already set
+if not _G.nav_state then
+    _G.nav_state = {
+        history = {},
+        current_screen = "home"
+    }
+end
 
--- Current screen name
-local current_screen = "home"
+-- Local references for convenience
+local history = _G.nav_state.history
+local function get_current() return _G.nav_state.current_screen end
+local function set_current(s) _G.nav_state.current_screen = s end
 
 -- Navigate to a screen by name
 function navigateTo(screen_name)
+    print("navigateTo called with: " .. tostring(screen_name))
     local path = screens[screen_name]
     if path then
         -- Push current screen to history before navigating
-        table.insert(history, current_screen)
-        current_screen = screen_name
+        table.insert(history, get_current())
+        set_current(screen_name)
 
         -- Load the new screen using C++ function
         local success = loadScreen(path)
         if success then
-            print("Navigated to: " .. screen_name)
+            print("Navigated to: " .. screen_name .. " (history depth: " .. #history .. ")")
         else
             -- Restore previous state on failure
-            current_screen = table.remove(history)
+            set_current(table.remove(history))
             print("Failed to navigate to: " .. screen_name)
         end
         return success
@@ -44,11 +53,12 @@ end
 
 -- Go back to previous screen
 function goBack()
+    print("goBack called (history depth: " .. #history .. ")")
     if #history > 0 then
         local previous = table.remove(history)
         local path = screens[previous]
         if path then
-            current_screen = previous
+            set_current(previous)
             loadScreen(path)
             print("Back to: " .. previous)
             return true
@@ -61,15 +71,18 @@ end
 
 -- Go to home screen (clear history)
 function goHome()
-    history = {}
-    current_screen = "home"
+    -- Clear the history table
+    for i = #history, 1, -1 do
+        history[i] = nil
+    end
+    set_current("home")
     loadScreen(screens.home)
     print("Navigated to home")
 end
 
 -- Get current screen name
 function getCurrentScreen()
-    return current_screen
+    return get_current()
 end
 
 -- Check if we can go back
@@ -79,7 +92,9 @@ end
 
 -- Clear navigation history
 function clearHistory()
-    history = {}
+    for i = #history, 1, -1 do
+        history[i] = nil
+    end
 end
 
 -- Get history depth
@@ -87,4 +102,4 @@ function getHistoryDepth()
     return #history
 end
 
-print("Navigation system initialized")
+print("Navigation system initialized (current: " .. get_current() .. ", history: " .. #history .. ")")