Keyboard navigatable menus

3 files changed, 168 insertions, 23 deletions

diff --git a/openbox/event.c b/openbox/event.c
index cdac8683..35d3472d 100644
--- a/openbox/event.c
+++ b/openbox/event.c
@@ -966,27 +966,37 @@ static void event_handle_menu(ObClient *client, XEvent *e)
     static ObMenuEntry *over = NULL;
     ObMenuEntry *entry;
     ObMenu *top;
-    GSList *it;
+    GList *it = NULL;
 
-    top = g_slist_nth_data(menu_visible, 0);
+    top = g_list_nth_data(menu_visible, 0);
 
     g_message("EVENT %d", e->type);
     switch (e->type) {
     case KeyPress:
-        if (over) {
-            if (over->parent->mouseover)
-                over->parent->mouseover(over, FALSE);
-            else
-                menu_control_mouseover(over, FALSE);
-            menu_entry_render(over);
-            over = NULL;
-        }
+        if (e->xkey.keycode == ob_keycode(OB_KEY_DOWN))
+            over = menu_control_keyboard_nav(over, OB_KEY_DOWN);
+        else if (e->xkey.keycode == ob_keycode(OB_KEY_UP))
+            over = menu_control_keyboard_nav(over, OB_KEY_UP);
+        else if (e->xkey.keycode == ob_keycode(OB_KEY_RETURN))
+            over = menu_control_keyboard_nav(over, OB_KEY_RETURN);
+        else if (e->xkey.keycode == ob_keycode(OB_KEY_ESCAPE))
+            over = menu_control_keyboard_nav(over, OB_KEY_ESCAPE);
+        else {
+            if (over) {
+                if (over->parent->mouseover)
+                    over->parent->mouseover(over, FALSE);
+                else
+                    menu_control_mouseover(over, FALSE);
+                menu_entry_render(over);
+                over = NULL;
+            }
 /*
-        if (top->hide)
-            top->hide(top);
-        else
+  if (top->hide)
+  top->hide(top);
+  else
 */
             menu_hide(top);
+        }
         break;
     case ButtonPress:
         if (e->xbutton.button > 3) break;
@@ -998,7 +1008,7 @@ static void event_handle_menu(ObClient *client, XEvent *e)
 
 	g_message("BUTTON RELEASED");
 
-        for (it = menu_visible; it; it = g_slist_next(it)) {
+        for (it = menu_visible; it; it = g_list_next(it)) {
             ObMenu *m = it->data;
             if (e->xbutton.x_root >= m->location.x - ob_rr_theme->bwidth &&
                 e->xbutton.y_root >= m->location.y - ob_rr_theme->bwidth &&
@@ -1045,7 +1055,7 @@ static void event_handle_menu(ObClient *client, XEvent *e)
         break;
     case MotionNotify:
         g_message("motion");
-        for (it = menu_visible; it; it = g_slist_next(it)) {
+        for (it = menu_visible; it; it = g_list_next(it)) {
             ObMenu *m = it->data;
             if ((entry = menu_find_entry_by_pos(it->data,
                                                 e->xmotion.x_root -
diff --git a/openbox/menu.c b/openbox/menu.c
index f8a5efc5..5b78a176 100644
--- a/openbox/menu.c
+++ b/openbox/menu.c
@@ -6,9 +6,10 @@
 #include "screen.h"
 #include "geom.h"
 #include "plugin.h"
+#include "misc.h"
 
 GHashTable *menu_hash = NULL;
-GSList *menu_visible = NULL;
+GList *menu_visible = NULL;
 
 #define FRAME_EVENTMASK (ButtonPressMask |ButtonMotionMask | EnterWindowMask | \
 			 LeaveWindowMask)
@@ -337,11 +338,11 @@ void menu_show_full(ObMenu *self, int x, int y, ObClient *client)
     self->client = client;
 
     if (!self->shown) {
-        if (!self->parent) {
+        if (!(self->parent && self->parent->shown)) {
             grab_pointer(TRUE, None);
             grab_keyboard(TRUE);
         }
-        menu_visible = g_slist_append(menu_visible, self);
+        menu_visible = g_list_append(menu_visible, self);
     }
 
     if (self->show) {
@@ -360,11 +361,11 @@ void menu_hide(ObMenu *self) {
 	if (self->parent && self->parent->open_submenu == self)
 	    self->parent->open_submenu = NULL;
 
-        if (!self->parent) {
+        if (!(self->parent && self->parent->shown)) {
             grab_keyboard(FALSE);
             grab_pointer(FALSE, None);
         }
-        menu_visible = g_slist_remove(menu_visible, self);
+        menu_visible = g_list_remove(menu_visible, self);
     }
 }
 
@@ -423,7 +424,8 @@ void menu_entry_fire(ObMenuEntry *self)
    Default menu controller action for showing.
 */
 
-void menu_control_show(ObMenu *self, int x, int y, ObClient *client) {
+void menu_control_show(ObMenu *self, int x, int y, ObClient *client)
+{
     guint i;
     Rect *a = NULL;
 
@@ -451,7 +453,8 @@ void menu_control_show(ObMenu *self, int x, int y, ObClient *client) {
     }
 }
 
-void menu_control_mouseover(ObMenuEntry *self, gboolean enter) {
+void menu_control_mouseover(ObMenuEntry *self, gboolean enter)
+{
     int x;
     Rect *a;
 
@@ -487,3 +490,134 @@ void menu_control_mouseover(ObMenuEntry *self, gboolean enter) {
 	} 
     }
 }
+
+ObMenuEntry *menu_control_keyboard_nav(ObMenuEntry *over, ObKey key)
+{
+    GList *it = NULL;
+        
+    switch (key) {
+    case OB_KEY_DOWN: {
+        if (over != NULL) {
+            if (over->parent->mouseover)
+                over->parent->mouseover(over, FALSE);
+            else
+                menu_control_mouseover(over, FALSE);
+            menu_entry_render(over);
+                
+            it = over->parent->entries;
+            while (it != NULL && it->data != over)
+                it = it->next;
+        }
+            
+        if (it && it->next)
+            over = (ObMenuEntry *)it->next->data;
+        else if (over == NULL) {
+            if (menu_visible && ((ObMenu *)menu_visible->data)->entries)
+                over = (ObMenuEntry *)
+                    (((ObMenu *)menu_visible->data)->entries)->data;
+            else
+                over = NULL;
+        } else {
+            over = (over->parent->entries != NULL ?
+                    over->parent->entries->data : NULL);
+        }
+
+        if (over) {
+            if (over->parent->mouseover)
+                over->parent->mouseover(over, TRUE);
+            else
+                menu_control_mouseover(over, TRUE);
+            menu_entry_render(over);
+        }
+        
+        break;
+    }
+    case OB_KEY_UP: {
+        if (over != NULL) {
+            if (over->parent->mouseover)
+                over->parent->mouseover(over, FALSE);
+            else
+                menu_control_mouseover(over, FALSE);
+            menu_entry_render(over);
+                
+            it = g_list_last(over->parent->entries);
+            while (it != NULL && it->data != over)
+                it = it->prev;
+        } 
+            
+        if (it && it->prev)
+            over = (ObMenuEntry *)it->prev->data;
+        else if (over == NULL) {
+            it = g_list_last(menu_visible);
+            if (it != NULL) {
+                it = g_list_last(((ObMenu *)it->data)->entries);
+                over = (ObMenuEntry *)(it != NULL ? it->data : NULL);
+            }
+        } else
+            over = (over->parent->entries != NULL ?
+                    g_list_last(over->parent->entries)->data :
+                    NULL);
+
+        if (over->parent->mouseover)
+            over->parent->mouseover(over, TRUE);
+        else
+            menu_control_mouseover(over, TRUE);
+        menu_entry_render(over);
+        break;
+    }
+    case OB_KEY_RETURN: {
+        if (over == NULL)
+            return over;
+
+        if (over->submenu) {
+            if (over->parent->mouseover)
+                over->parent->mouseover(over, FALSE);
+            else
+                menu_control_mouseover(over, FALSE);
+            menu_entry_render(over);
+
+            if (over->submenu->entries)
+                over = over->submenu->entries->data;
+
+            if (over->parent->mouseover)
+                over->parent->mouseover(over, TRUE);
+            else
+                menu_control_mouseover(over, TRUE);
+            menu_entry_render(over);
+        }
+        else {
+            if (over->parent->mouseover)
+                over->parent->mouseover(over, FALSE);
+            else
+                menu_control_mouseover(over, FALSE);
+            menu_entry_render(over);
+
+            menu_entry_fire(over);
+        }
+        break;
+    }
+    case OB_KEY_ESCAPE: {
+        if (over != NULL) {
+            if (over->parent->mouseover)
+                over->parent->mouseover(over, FALSE);
+            else
+                menu_control_mouseover(over, FALSE);
+            menu_entry_render(over);
+
+            menu_hide(over->parent);
+        } else {
+            it  = g_list_last(menu_visible);
+            if (it) {
+                menu_hide((ObMenu *)it->data);
+            }
+        }
+        
+        over = NULL;
+        break;
+    }
+    default:
+        g_error("Unknown key");
+    }
+
+    return over;
+}
diff --git a/openbox/menu.h b/openbox/menu.h
index 2f3f9ac2..d3e12dc6 100644
--- a/openbox/menu.h
+++ b/openbox/menu.h
@@ -19,7 +19,7 @@ typedef void(*menu_controller_update)(ObMenu *self);
 typedef void(*menu_controller_mouseover)(ObMenuEntry *self, gboolean enter);
 
 extern GHashTable *menu_hash;
-extern GSList *menu_visible;
+extern GList *menu_visible;
 
 struct _ObMenu
 {
@@ -157,4 +157,5 @@ void menu_render_full(ObMenu *self);
 //so plugins can call it?
 void parse_menu_full(xmlDocPtr doc, xmlNodePtr node, void *data, gboolean new);
 void menu_control_mouseover(ObMenuEntry *entry, gboolean enter);
+ObMenuEntry *menu_control_keyboard_nav(ObMenuEntry *over, ObKey key);
 #endif