Using custom focus handler to work around problem with multiple widgets

requesting modal focus using a stack based approach.

1 files changed, 65 insertions, 0 deletions

diff --git a/src/gui/focushandler.cpp b/src/gui/focushandler.cpp
new file mode 100644
index 00000000..94d54f50
--- /dev/null
+++ b/src/gui/focushandler.cpp
@@ -0,0 +1,65 @@
+/*
+ *  The Mana World
+ *  Copyright 2004 The Mana World Development Team
+ *
+ *  This file is part of The Mana World.
+ *
+ *  The Mana World is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  The Mana World is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with The Mana World; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *  $Id$
+ */
+
+#include "focushandler.h"
+
+
+void FocusHandler::requestModalFocus(gcn::Widget *widget)
+{
+    /* If there is another widget with modal focus, remove its modal focus
+     * and put it on the modal widget stack.
+     */
+    if (mModalFocusedWidget != NULL && mModalFocusedWidget != widget)
+    {
+        modalStack.push_front(mModalFocusedWidget);
+        mModalFocusedWidget = NULL;
+    }
+
+    gcn::FocusHandler::requestModalFocus(widget);
+}
+
+void FocusHandler::releaseModalFocus(gcn::Widget *widget)
+{
+    modalStack.remove(widget);
+
+    if (mModalFocusedWidget == widget)
+    {
+        gcn::FocusHandler::releaseModalFocus(widget);
+
+        /* Check if there were any previously modal widgets that'd still like
+         * to regain their modal focus.
+         */
+        if (modalStack.size() > 0)
+        {
+            gcn::FocusHandler::requestModalFocus(modalStack.front());
+            modalStack.pop_front();
+        }
+    }
+}
+
+void FocusHandler::remove(gcn::Widget *widget)
+{
+    releaseModalFocus(widget);
+
+    gcn::FocusHandler::remove(widget);
+}