initial checkin

1 files changed, 170 insertions, 0 deletions

diff --git a/list.c b/list.c
new file mode 100644
index 0000000..ff38476
--- /dev/null
+++ b/list.c
@@ -0,0 +1,170 @@
+/* functions for handling the window list */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "ratpoison.h"
+
+rp_window *rp_window_head, *rp_window_tail;
+rp_window *rp_current_window;
+
+rp_window *
+add_to_window_list (screen_info *s, Window w)
+{
+  rp_window *new_window;
+
+  new_window = malloc (sizeof (rp_window));
+  if (new_window == NULL)
+    {
+      fprintf (stderr, "list.c:add_to_window_list():Out of memory!\n");
+      exit (EXIT_FAILURE);
+    }
+  new_window->w = w;
+  new_window->scr = s;
+  new_window->last_access = 0;
+  new_window->prev = NULL;
+  if ((new_window->name = malloc (strlen ("Unnamed") + 1)) == NULL)
+    {
+      fprintf (stderr, "list.c:add_to_window_list():Out of memory.\n");
+      exit (EXIT_FAILURE);
+    }
+  strcpy (new_window->name, "Unnamed");
+
+  if (rp_window_head == NULL)
+    {
+      /* The list is empty. */
+      rp_window_head = new_window;
+      rp_window_tail = new_window;
+      new_window->next = NULL;
+      return new_window;
+    }
+
+  /* Add the window to the head of the list. */
+  new_window->next = rp_window_head;
+  rp_window_head->prev = new_window;
+  rp_window_head = new_window;
+
+  return new_window;
+}
+
+/* Check to see if the window is already in our list of managed windows. */
+rp_window *
+find_window (Window w)
+{
+  rp_window *cur;
+
+  for (cur = rp_window_head; cur; cur = cur->next)
+    if (cur->w == w) return cur;
+
+  return NULL;
+}
+      
+void
+remove_from_window_list (rp_window *w)
+{
+  if (rp_window_head == w) rp_window_head = w->next;
+  if (rp_window_tail == w) rp_window_tail = w->prev;
+
+  if (w->prev != NULL) w->prev->next = w->next;
+  if (w->next != NULL) w->next->prev = w->prev;
+
+  if (rp_current_window == w) rp_current_window = rp_window_head;
+  if (rp_current_window && rp_current_window->state == STATE_UNMAPPED) next_window ();
+
+  free (w);
+#ifdef DEBUG
+  printf ("Removed window from list.\n");
+#endif
+}
+
+void
+set_current_window (rp_window *win)
+{
+  rp_current_window = win;  
+}
+
+void
+init_window_list ()
+{
+  rp_window_head = rp_window_tail = NULL;
+  rp_current_window = NULL;
+}
+
+void
+next_window ()
+{
+  if (rp_current_window != NULL)
+    {
+      rp_current_window = rp_current_window->next;
+      if (rp_current_window == NULL) 
+	{
+	  rp_current_window = rp_window_head;
+	}
+      if (rp_current_window->state == STATE_UNMAPPED) next_window ();
+      set_active_window (rp_current_window);
+    }
+}
+
+void
+prev_window ()
+{
+  if (rp_current_window != NULL)
+    {
+      set_current_window (rp_current_window->prev);
+      if (rp_current_window == NULL) 
+	{
+	  rp_current_window = rp_window_tail;
+	}
+      if (rp_current_window->state == STATE_UNMAPPED) prev_window ();
+      set_active_window (rp_current_window);
+    }
+}
+
+rp_window *
+find_last_accessed_window ()
+{
+  int last_access = 0;
+  rp_window *cur, *most_recent = NULL;
+
+  for (cur=rp_window_head; cur; cur=cur->next)
+    {
+      if (cur->last_access > last_access 
+	  && cur != rp_current_window 
+	  && cur->state == STATE_MAPPED) 
+	{
+	  most_recent = cur;
+	  last_access = most_recent->last_access;
+	}
+    }
+
+  return most_recent;
+}
+
+void
+last_window ()
+{
+  rp_current_window = find_last_accessed_window ();
+  set_active_window (rp_current_window);
+}
+
+void
+set_active_window (rp_window *rp_w)
+{
+  static int counter = 1;	/* increments every time this function
+                                   is called. This way we can track
+                                   which window was last accessed.  */
+
+  if (rp_w == NULL) return;
+
+  counter++;
+  rp_w->last_access = counter;
+
+  if (rp_w->scr->bar_is_raised) update_window_names (rp_w->scr);
+
+  XSetInputFocus (dpy, rp_w->w, 
+		  RevertToPointerRoot, CurrentTime);
+  XRaiseWindow (dpy, rp_w->w);
+      
+  /* Make sure the program bar is always on the top */
+  update_window_names (rp_w->scr);
+}