Bind key to switch to next active window

alt-a brings one to the next window with unread messages.

Regards https://github.com/profanity-im/profanity/issues/1114

src/ui/inputwin.c

@@ -121,6 +121,7 @@ static int _inp_rl_win_19_handler(int count, int key);
 static int _inp_rl_win_20_handler(int count, int key);
 static int _inp_rl_win_prev_handler(int count, int key);
 static int _inp_rl_win_next_handler(int count, int key);
+static int _inp_rl_win_next_unread_handler(int count, int key);
 static int _inp_rl_win_pageup_handler(int count, int key);
 static int _inp_rl_win_pagedown_handler(int count, int key);
 static int _inp_rl_subwin_pageup_handler(int count, int key);
@@ -403,6 +404,7 @@ _inp_rl_addfuncs(void)
     rl_add_funmap_entry("prof_win_20", _inp_rl_win_20_handler);
     rl_add_funmap_entry("prof_win_prev", _inp_rl_win_prev_handler);
     rl_add_funmap_entry("prof_win_next", _inp_rl_win_next_handler);
+    rl_add_funmap_entry("prof_win_next_unread", _inp_rl_win_next_unread_handler);
     rl_add_funmap_entry("prof_win_pageup", _inp_rl_win_pageup_handler);
     rl_add_funmap_entry("prof_win_pagedown", _inp_rl_win_pagedown_handler);
     rl_add_funmap_entry("prof_subwin_pageup", _inp_rl_subwin_pageup_handler);
@@ -456,6 +458,8 @@ _inp_rl_startup_hook(void)
     rl_bind_keyseq("\\e[1;3C", _inp_rl_win_next_handler);
     rl_bind_keyseq("\\e\\e[C", _inp_rl_win_next_handler);
 
+    rl_bind_keyseq("\\ea", _inp_rl_win_next_unread_handler);
+
     rl_bind_keyseq("\\e\\e[5~", _inp_rl_subwin_pageup_handler);
     rl_bind_keyseq("\\e[5;3~", _inp_rl_subwin_pageup_handler);
     rl_bind_keyseq("\\e\\eOy", _inp_rl_subwin_pageup_handler);
@@ -769,6 +773,16 @@ _inp_rl_win_next_handler(int count, int key)
     return 0;
 }
 
+static int
+_inp_rl_win_next_unread_handler(int count, int key)
+{
+    ProfWin *window = wins_get_next_unread();
+    if (window) {
+        ui_focus_win(window);
+    }
+    return 0;
+}
+
 static int
 _inp_rl_win_pageup_handler(int count, int key)
 {

src/ui/window_list.c

@@ -1130,3 +1130,29 @@ wins_destroy(void)
     autocomplete_free(wins_ac);
     autocomplete_free(wins_close_ac);
 }
+
+ProfWin*
+wins_get_next_unread(void)
+{
+    // get and sort win nums
+    GList *values = g_hash_table_get_values(windows);
+    values = g_list_sort(values, _wins_cmp_num);
+    GList *curr = values;
+
+    while (curr) {
+        if (current == GPOINTER_TO_INT(curr->data)) {
+            break;
+        }
+
+        ProfWin *window = curr->data;
+        if (win_unread(window) > 0) {
+            g_list_free(values);
+            return window;
+        }
+
+        curr = g_list_next(curr);
+    }
+
+    g_list_free(values);
+    return NULL;
+}

src/ui/window_list.h

@@ -72,6 +72,7 @@ ProfWin* wins_get_by_string(const char *str);
 
 ProfWin* wins_get_next(void);
 ProfWin* wins_get_previous(void);
+ProfWin* wins_get_next_unread(void);
 int wins_get_num(ProfWin *window);
 int wins_get_current_num(void);
 void wins_close_current(void);