From d2767605e381f551929accb1e6e2cbd4dc231a03 Mon Sep 17 00:00:00 2001
From: Cary Sandvig <frang@users.sourceforge.net>
Date: Tue, 13 Feb 2001 00:13:51 +0000
Subject: [PATCH] make the next/prev work

---
 panda/src/gui/guiChooser.I   |  8 +++++++
 panda/src/gui/guiChooser.cxx | 45 ++++++++++++++++++++++++++++++++++--
 panda/src/gui/guiChooser.h   |  4 ++++
 3 files changed, 55 insertions(+), 2 deletions(-)

diff --git a/panda/src/gui/guiChooser.I b/panda/src/gui/guiChooser.I
index 0aec290d0f..5271e3d9a0 100644
--- a/panda/src/gui/guiChooser.I
+++ b/panda/src/gui/guiChooser.I
@@ -4,3 +4,11 @@
 ////////////////////////////////////////////////////////////////////
 
 INLINE GuiChooser::GuiChooser(void) {}
+
+INLINE void GuiChooser::set_loop(bool b) {
+  _loop = b;
+}
+
+INLINE bool GuiChooser::get_loop(void) const {
+  return _loop;
+}
diff --git a/panda/src/gui/guiChooser.cxx b/panda/src/gui/guiChooser.cxx
index b81cc3d429..0aaec827e8 100644
--- a/panda/src/gui/guiChooser.cxx
+++ b/panda/src/gui/guiChooser.cxx
@@ -26,8 +26,8 @@ void GuiChooser::recompute_frame(void) {
 }
 
 GuiChooser::GuiChooser(const string& name, GuiButton* prev, GuiButton* next)
-  : GuiBehavior(name), _curr(-1), _prev_button(prev), _next_button(next),
-    _prev_functor((GuiChooser::ChooseFunctor*)0L),
+  : GuiBehavior(name), _curr(-1), _loop(false), _prev_button(prev),
+    _next_button(next), _prev_functor((GuiChooser::ChooseFunctor*)0L),
     _next_functor((GuiChooser::ChooseFunctor*)0L) {
 }
 
@@ -38,14 +38,55 @@ GuiChooser::~GuiChooser(void) {
 void GuiChooser::move_prev(void) {
   if (_curr == -1)
     return;
+  int tmp = _curr - 1;
+  if (_loop) {
+    if (tmp < 0)
+      tmp += _items.size();
+  }
+  if (_mgr != (GuiManager*)0L) {
+    _items[_curr]->unmanage();
+    _items[tmp]->manage(_mgr, *_eh);
+    if (tmp == 0)
+      _prev_button->inactive();
+    else
+      _prev_button->up();
+    int foo = _items.size() - 1;
+    if (tmp == foo)
+      _next_button->inactive();
+    else
+      _next_button->up();
+  }
+  _curr = tmp;
 }
 
 void GuiChooser::move_next(void) {
   if (_curr == -1)
     return;
+  int tmp = _curr + 1;
+  if (_loop) {
+    int foo = _items.size();
+    if (tmp == foo)
+      tmp = 0;
+  }
+  if (_mgr != (GuiManager*)0L) {
+    _items[_curr]->unmanage();
+    _items[tmp]->manage(_mgr, *_eh);
+    if (tmp == 0)
+      _prev_button->inactive();
+    else
+      _prev_button->up();
+    if (tmp == (_items.size() - 1))
+      _next_button->inactive();
+    else
+      _next_button->up();
+  }
+  _curr = tmp;
 }
 
 void GuiChooser::add_item(GuiItem* item) {
+  _items.push_back(item);
+  if (_curr == -1)
+    _curr = 0;
 }
 
 int GuiChooser::freeze(void) {
diff --git a/panda/src/gui/guiChooser.h b/panda/src/gui/guiChooser.h
index 8189489d7e..553c82f456 100644
--- a/panda/src/gui/guiChooser.h
+++ b/panda/src/gui/guiChooser.h
@@ -32,6 +32,7 @@ private:
 
   ItemVector _items;
   int _curr;
+  bool _loop;
   PT(GuiButton) _prev_button;
   PT(GuiButton) _next_button;
 
@@ -62,6 +63,9 @@ PUBLISHED:
   virtual void reset_behavior(void);
 
   virtual void output(ostream&) const;
+
+  INLINE void set_loop(bool);
+  INLINE bool get_loop(void) const;
 public:
   // type interface
   static TypeHandle get_class_type(void) {