--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ext/guichan-0.8.1/src/focushandler.cpp	Sun Jun 29 18:44:17 2008 +0000
@@ -0,0 +1,587 @@
+/*      _______   __   __   __   ______   __   __   _______   __   __
+ *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
+ *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
+ *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
+ *
+ *
+ * Per Larsson a.k.a finalman
+ * Olof Naessén a.k.a jansem/yakslem
+ *
+ * Visit: http://guichan.sourceforge.net
+ *
+ * License: (BSD)
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Guichan nor the names of its contributors may
+ *    be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * For comments regarding functions please see the header file.
+ */
+
+#include "guichan/focushandler.hpp"
+
+#include "guichan/focuslistener.hpp"
+#include "guichan/exception.hpp"
+#include "guichan/widget.hpp"
+
+namespace gcn
+{
+    FocusHandler::FocusHandler()
+        :mFocusedWidget(NULL),
+         mModalFocusedWidget(NULL),
+         mModalMouseInputFocusedWidget(NULL),
+         mDraggedWidget(NULL),
+         mLastWidgetWithMouse(NULL),
+         mLastWidgetWithModalFocus(NULL),
+         mLastWidgetWithModalMouseInputFocus(NULL),
+         mLastWidgetPressed(NULL)
+    {
+
+    }
+
+    void FocusHandler::requestFocus(Widget* widget)
+    {
+        if (widget == NULL
+            || widget == mFocusedWidget)
+        {
+            return;
+        }
+        
+        unsigned int i = 0;
+        int toBeFocusedIndex = -1;
+        for (i = 0; i < mWidgets.size(); ++i)
+        {
+            if (mWidgets[i] == widget)
+            {
+                toBeFocusedIndex = i;
+                break;
+            }
+        }
+        
+        if (toBeFocusedIndex < 0)
+        {
+            throw GCN_EXCEPTION("Trying to focus a none existing widget.");
+        }
+        
+        Widget *oldFocused = mFocusedWidget;
+        
+        if (oldFocused != widget)
+        {
+            mFocusedWidget = mWidgets.at(toBeFocusedIndex);
+            
+            if (oldFocused != NULL)
+            {
+                Event focusEvent(oldFocused);
+                distributeFocusLostEvent(focusEvent);
+            }
+            
+            Event focusEvent(mWidgets.at(toBeFocusedIndex));
+            distributeFocusGainedEvent(focusEvent);
+        }        
+    }
+
+    void FocusHandler::requestModalFocus(Widget* widget)
+    {
+        if (mModalFocusedWidget != NULL && mModalFocusedWidget != widget)
+        {
+            throw GCN_EXCEPTION("Another widget already has modal focus.");
+        }
+
+        mModalFocusedWidget = widget;
+
+        if (mFocusedWidget != NULL 
+            && !mFocusedWidget->isModalFocused())
+        {
+            focusNone();
+        }
+    }
+
+    void FocusHandler::requestModalMouseInputFocus(Widget* widget)
+    {
+        if (mModalMouseInputFocusedWidget != NULL
+            && mModalMouseInputFocusedWidget != widget)
+        {
+            throw GCN_EXCEPTION("Another widget already has modal input focus.");
+        }
+
+        mModalMouseInputFocusedWidget = widget;
+    }
+
+    void FocusHandler::releaseModalFocus(Widget* widget)
+    {
+        if (mModalFocusedWidget == widget)
+        {
+            mModalFocusedWidget = NULL;
+        }
+    }
+
+    void FocusHandler::releaseModalMouseInputFocus(Widget* widget)
+    {
+        if (mModalMouseInputFocusedWidget == widget)
+        {
+            mModalMouseInputFocusedWidget = NULL;
+        }
+    }
+
+    Widget* FocusHandler::getFocused() const
+    {
+        return mFocusedWidget;
+    }
+
+    Widget* FocusHandler::getModalFocused() const
+    {
+        return mModalFocusedWidget;
+    }
+
+    Widget* FocusHandler::getModalMouseInputFocused() const
+    {
+        return mModalMouseInputFocusedWidget;
+    }
+
+    void FocusHandler::focusNext()
+    {
+        int i;
+        int focusedWidget = -1;
+        for (i = 0; i < (int)mWidgets.size(); ++i)
+        {
+            if (mWidgets[i] == mFocusedWidget)
+            {
+                focusedWidget = i;
+            }
+        }
+        int focused = focusedWidget;
+
+        // i is a counter that ensures that the following loop
+        // won't get stuck in an infinite loop
+        i = (int)mWidgets.size();
+        do
+        {
+            ++focusedWidget;
+
+            if (i==0)
+            {
+                focusedWidget = -1;
+                break;
+            }
+
+            --i;
+
+            if (focusedWidget >= (int)mWidgets.size())
+            {
+                focusedWidget = 0;
+            }
+
+            if (focusedWidget == focused)
+            {
+                return;
+            }
+        }
+        while (!mWidgets.at(focusedWidget)->isFocusable());
+
+        if (focusedWidget >= 0)
+        {
+            mFocusedWidget = mWidgets.at(focusedWidget);
+
+            Event focusEvent(mFocusedWidget);
+            distributeFocusGainedEvent(focusEvent);
+        }
+
+        if (focused >= 0)
+        {
+            Event focusEvent(mWidgets.at(focused));
+            distributeFocusLostEvent(focusEvent);
+        }
+    }
+
+    void FocusHandler::focusPrevious()
+    {
+        if (mWidgets.size() == 0)
+        {
+            mFocusedWidget = NULL;
+            return;
+        }
+
+        int i;
+        int focusedWidget = -1;
+        for (i = 0; i < (int)mWidgets.size(); ++i)
+        {
+            if (mWidgets[i] == mFocusedWidget)
+            {
+                focusedWidget = i;
+            }
+        }
+        int focused = focusedWidget;
+
+        // i is a counter that ensures that the following loop
+        // won't get stuck in an infinite loop
+        i = (int)mWidgets.size();
+        do
+        {
+            --focusedWidget;
+
+            if (i==0)
+            {
+                focusedWidget = -1;
+                break;
+            }
+
+            --i;
+
+            if (focusedWidget <= 0)
+            {
+                focusedWidget = mWidgets.size() - 1;
+            }
+
+            if (focusedWidget == focused)
+            {
+                return;
+            }
+        }
+        while (!mWidgets.at(focusedWidget)->isFocusable());
+
+        if (focusedWidget >= 0)
+        {
+            mFocusedWidget = mWidgets.at(focusedWidget);
+            Event focusEvent(mFocusedWidget);
+            distributeFocusGainedEvent(focusEvent);
+        }
+
+        if (focused >= 0)
+        {
+            Event focusEvent(mWidgets.at(focused));
+            distributeFocusLostEvent(focusEvent);
+        }
+    }
+
+    bool FocusHandler::isFocused(const Widget* widget) const
+    {
+        return mFocusedWidget == widget;
+    }
+
+    void FocusHandler::add(Widget* widget)
+    {
+        mWidgets.push_back(widget);
+    }
+
+    void FocusHandler::remove(Widget* widget)
+    {
+        if (isFocused(widget))
+        {
+            mFocusedWidget = NULL;
+        }
+
+        WidgetIterator iter;
+
+        for (iter = mWidgets.begin(); iter != mWidgets.end(); ++iter)
+        {
+            if ((*iter) == widget)
+            {
+                mWidgets.erase(iter);
+                break;
+            }
+        }
+
+        if (mDraggedWidget == widget)
+        {
+            mDraggedWidget = NULL;
+            return;
+        }   
+        
+        if (mLastWidgetWithMouse == widget)
+        {
+            mLastWidgetWithMouse = NULL;
+            return;
+        }
+
+        if (mLastWidgetWithModalFocus == widget)
+        {
+            mLastWidgetWithModalFocus = NULL;
+            return;
+        }
+
+        if (mLastWidgetWithModalMouseInputFocus == widget)
+        {
+            mLastWidgetWithModalMouseInputFocus = NULL;
+            return;
+        }
+
+        if (mLastWidgetPressed == widget)
+        {
+            mLastWidgetPressed = NULL;
+            return;
+        }
+    }
+
+    void FocusHandler::focusNone()
+    {
+        if (mFocusedWidget != NULL)
+        {
+            Widget* focused = mFocusedWidget;
+            mFocusedWidget = NULL;
+
+            Event focusEvent(focused);
+            distributeFocusLostEvent(focusEvent);
+        }
+    }
+
+    void FocusHandler::tabNext()
+    {
+        if (mFocusedWidget != NULL)
+        {
+            if (!mFocusedWidget->isTabOutEnabled())
+            {
+                return;
+            }
+        }
+
+        if (mWidgets.size() == 0)
+        {
+            mFocusedWidget = NULL;
+            return;
+        }
+
+        int i;
+        int focusedWidget = -1;
+        for (i = 0; i < (int)mWidgets.size(); ++i)
+        {
+            if (mWidgets[i] == mFocusedWidget)
+            {
+                focusedWidget = i;
+            }
+        }
+        int focused = focusedWidget;
+        bool done = false;
+
+        // i is a counter that ensures that the following loop
+        // won't get stuck in an infinite loop
+        i = (int)mWidgets.size();
+        do
+        {
+            ++focusedWidget;
+
+            if (i==0)
+            {
+                focusedWidget = -1;
+                break;
+            }
+
+            --i;
+
+            if (focusedWidget >= (int)mWidgets.size())
+            {
+                focusedWidget = 0;
+            }
+
+            if (focusedWidget == focused)
+            {
+                return;
+            }
+
+            if (mWidgets.at(focusedWidget)->isFocusable() &&
+                mWidgets.at(focusedWidget)->isTabInEnabled() &&
+                (mModalFocusedWidget == NULL ||
+                 mWidgets.at(focusedWidget)->isModalFocused()))
+            {
+                done = true;
+            }
+        }
+        while (!done);
+
+        if (focusedWidget >= 0)
+        {
+            mFocusedWidget = mWidgets.at(focusedWidget);
+            Event focusEvent(mFocusedWidget);
+            distributeFocusGainedEvent(focusEvent);
+        }
+
+        if (focused >= 0)
+        {
+            Event focusEvent(mWidgets.at(focused));
+            distributeFocusLostEvent(focusEvent);
+        }
+    }
+
+    void FocusHandler::tabPrevious()
+    {
+        if (mFocusedWidget != NULL)
+        {
+            if (!mFocusedWidget->isTabOutEnabled())
+            {
+                return;
+            }
+        }
+
+        if (mWidgets.size() == 0)
+        {
+            mFocusedWidget = NULL;
+            return;
+        }
+
+        int i;
+        int focusedWidget = -1;
+        for (i = 0; i < (int)mWidgets.size(); ++i)
+        {
+            if (mWidgets[i] == mFocusedWidget)
+            {
+                focusedWidget = i;
+            }
+        }
+        int focused = focusedWidget;
+        bool done = false;
+
+        // i is a counter that ensures that the following loop
+        // won't get stuck in an infinite loop
+        i = (int)mWidgets.size();
+        do
+        {
+            --focusedWidget;
+
+            if (i==0)
+            {
+                focusedWidget = -1;
+                break;
+            }
+
+            --i;
+
+            if (focusedWidget <= 0)
+            {
+                focusedWidget = mWidgets.size() - 1;
+            }
+
+            if (focusedWidget == focused)
+            {
+                return;
+            }
+
+            if (mWidgets.at(focusedWidget)->isFocusable() &&
+                mWidgets.at(focusedWidget)->isTabInEnabled() &&
+                (mModalFocusedWidget == NULL ||
+                 mWidgets.at(focusedWidget)->isModalFocused()))
+            {
+                done = true;
+            }
+        }
+        while (!done);
+
+        if (focusedWidget >= 0)
+        {
+            mFocusedWidget = mWidgets.at(focusedWidget);
+            Event focusEvent(mFocusedWidget);
+            distributeFocusGainedEvent(focusEvent);
+        }
+
+        if (focused >= 0)
+        {
+            Event focusEvent(mWidgets.at(focused));
+            distributeFocusLostEvent(focusEvent);
+        }
+    }
+
+    void FocusHandler::distributeFocusLostEvent(const Event& focusEvent)
+    {
+        Widget* sourceWidget = focusEvent.getSource();
+
+        std::list<FocusListener*> focusListeners = sourceWidget->_getFocusListeners();
+
+        // Send the event to all focus listeners of the widget.
+        for (std::list<FocusListener*>::iterator it = focusListeners.begin();
+             it != focusListeners.end();
+             ++it)
+        {
+            (*it)->focusLost(focusEvent);
+        }
+    }
+
+    void FocusHandler::distributeFocusGainedEvent(const Event& focusEvent)
+    {
+        Widget* sourceWidget = focusEvent.getSource();
+
+        std::list<FocusListener*> focusListeners = sourceWidget->_getFocusListeners();
+
+        // Send the event to all focus listeners of the widget.
+        for (std::list<FocusListener*>::iterator it = focusListeners.begin();
+             it != focusListeners.end();
+             ++it)
+        {
+            (*it)->focusGained(focusEvent);
+        }
+    }
+
+    Widget* FocusHandler::getDraggedWidget()
+    {
+        return mDraggedWidget;
+    }
+
+    void FocusHandler::setDraggedWidget(Widget* draggedWidget)
+    {
+        mDraggedWidget = draggedWidget;
+    }
+
+    Widget* FocusHandler::getLastWidgetWithMouse()
+    {
+        return mLastWidgetWithMouse;
+    }
+
+    void FocusHandler::setLastWidgetWithMouse(Widget* lastWidgetWithMouse)
+    {
+        mLastWidgetWithMouse = lastWidgetWithMouse;
+    }
+
+    Widget* FocusHandler::getLastWidgetWithModalFocus()
+    {
+        return mLastWidgetWithModalFocus;
+    }
+
+    void FocusHandler::setLastWidgetWithModalFocus(Widget* lastWidgetWithModalFocus)
+    {
+        mLastWidgetWithModalFocus = lastWidgetWithModalFocus;
+    }
+
+    Widget* FocusHandler::getLastWidgetWithModalMouseInputFocus()
+    {
+        return mLastWidgetWithModalMouseInputFocus;
+    }
+
+    void FocusHandler::setLastWidgetWithModalMouseInputFocus(Widget* lastWidgetWithModalMouseInputFocus)
+    {
+        mLastWidgetWithModalMouseInputFocus = lastWidgetWithModalMouseInputFocus;
+    }
+
+    Widget* FocusHandler::getLastWidgetPressed()
+    {
+        return mLastWidgetPressed;
+    }
+
+    void FocusHandler::setLastWidgetPressed(Widget* lastWidgetPressed)
+    {
+        mLastWidgetPressed = lastWidgetPressed;
+    }
+}