fix(ui,window): manage unread indicators and paging state accurately

Add logic to track unread message indicators and the paged state in the UI window component, ensuring correct clearing and display of unread markers while navigating.

Files: src/ui/window.c, src/ui/titlebar.c, src/ui/win_types.h

src/ui/titlebar.c

@@ -268,7 +268,11 @@ _show_scrolled(ProfWin* current)
         wattroff(win, bracket_attrs);
 
         wattron(win, scrolled_attrs);
-        wprintw(win, "SCROLLED");
+        if (current->layout->unread_msg == 0) {
+            wprintw(win, "SCROLLED");
+        } else {
+            wprintw(win, "SCROLLED, NEW MESSAGES");
+        }
         wattroff(win, scrolled_attrs);
 
         wattron(win, bracket_attrs);

src/ui/win_types.h

@@ -120,6 +120,7 @@ typedef struct prof_layout_t
     ProfBuff buffer;
     int y_pos;
     int paged;
+    int unread_msg;
 } ProfLayout;
 
 typedef struct prof_layout_simple_t

src/ui/window.c

@@ -103,6 +103,7 @@ _win_create_simple_layout(void)
     layout->base.buffer = buffer_create();
     layout->base.y_pos = 0;
     layout->base.paged = 0;
+    layout->base.unread_msg = 0;
     scrollok(layout->base.win, TRUE);
 
     return &layout->base;
@@ -120,6 +121,7 @@ _win_create_split_layout(void)
     layout->base.buffer = buffer_create();
     layout->base.y_pos = 0;
     layout->base.paged = 0;
+    layout->base.unread_msg = 0;
     scrollok(layout->base.win, TRUE);
     layout->subwin = NULL;
     layout->sub_y_pos = 0;
@@ -197,6 +199,7 @@ win_create_muc(const char* const roomjid)
     layout->base.buffer = buffer_create();
     layout->base.y_pos = 0;
     layout->base.paged = 0;
+    layout->base.unread_msg = 0;
     scrollok(layout->base.win, TRUE);
     new_win->window.layout = (ProfLayout*)layout;
 
@@ -709,7 +712,7 @@ win_page_down(ProfWin* window, int scroll_size)
     *page_start += scroll_size;
 
     // Scrolled down after reaching the bottom of the page
-    if ((*page_start > total_rows - page_space || (*page_start == page_space && *page_start >= total_rows)) && window->type == WIN_CHAT) {
+    if (((*page_start > total_rows + window->layout->unread_msg - page_space) || ((*page_start == page_space + window->layout->unread_msg) && *page_start >= (total_rows + window->layout->unread_msg))) && window->type == WIN_CHAT) {
         int bf_size = buffer_size(window->layout->buffer);
         if (bf_size > 0 && *scroll_state != WIN_SCROLL_REACHED_BOTTOM) {
             // How many lines are left until end of the screen
@@ -743,13 +746,14 @@ win_page_down(ProfWin* window, int scroll_size)
     window->layout->paged = 1;
 
     // update only if position has changed
-    if (page_start_initial != *page_start) {
+    if ((page_start_initial != *page_start) || (window->layout->unread_msg)) {
         win_update_virtual(window);
     }
 
-    // switch off page if last line and space line visible
-    if (total_rows - *page_start == page_space) {
+    // switch off page if no messages left to read
+    if (*scroll_state == WIN_SCROLL_REACHED_BOTTOM) {
         window->layout->paged = 0;
+        window->layout->unread_msg = 0;
     }
 }
 
@@ -810,6 +814,7 @@ win_clear(ProfWin* window)
     int* page_start = &(window->layout->y_pos);
     *page_start = y;
     window->layout->paged = 1;
+    window->layout->unread_msg = 0;
     win_update_virtual(window);
 }
 
@@ -914,6 +919,7 @@ void
 win_move_to_end(ProfWin* window)
 {
     window->layout->paged = 0;
+    window->layout->unread_msg = 0;
 
     int rows = getmaxy(stdscr);
     int y = getcury(window->layout->win);
@@ -1698,17 +1704,18 @@ _win_printf(ProfWin* window, const char* show_char, int pad_indent, GDateTime* t
 {
 
     /* Test code start
-    Description: this code prevents printing and buffer update when user is viewing message history [SCROLLING]
+        TODO:
+     - TOLERABLE check window->layout->paged handling for reliability (if buffer size is less than window size [SCROLLING] not set)
+     - make a propper condition check for differernt cases
+     - DONE add a user notification in header when new messages arrive while scrolling history
+     - DONE handle SCROLLED state properly in case of incominf messages (currently it is cleared before new message is printed)
 
-        TODO: 
-     - check window->layout->paged handling for reliability (if buffer size is less than window size [SCROLLING] not set)
-     - make a propper condition check for differernt cases 
-     - add a user notification in header when new messages arrive while scrolling history
-     - handle SCROLLED state properly in case of incominf messages (currently it is cleared before new message is printed)
+    Description: this code prevents printing and buffer when user is viewing message history [SCROLLING]
 
 #warning "TEST CODE: temporary/test code present in window.c:1709 - remove before release"*/
 
     if ((window->layout->paged) && wins_is_current(window)) {
+        window->layout->unread_msg++;
         return;
     }
     /* Test code end */