--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ext/guichan-0.8.2/src/gui.cpp	Mon Jan 11 23:34:52 2010 +0000
@@ -0,0 +1,995 @@
+/*      _______   __   __   __   ______   __   __   _______   __   __
+ *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
+ *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
+ *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * 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/gui.hpp"
+
+#include "guichan/basiccontainer.hpp"
+#include "guichan/exception.hpp"
+#include "guichan/focushandler.hpp"
+#include "guichan/graphics.hpp"
+#include "guichan/input.hpp"
+#include "guichan/keyinput.hpp"
+#include "guichan/keylistener.hpp"
+#include "guichan/mouseinput.hpp"
+#include "guichan/mouselistener.hpp"
+#include "guichan/widget.hpp"
+
+namespace gcn
+{
+    Gui::Gui()
+            :mTop(NULL),
+             mGraphics(NULL),
+             mInput(NULL),
+             mTabbing(true),
+             mShiftPressed(false),
+             mMetaPressed(false),
+             mControlPressed(false),
+             mAltPressed(false),
+             mLastMousePressButton(0),
+             mLastMousePressTimeStamp(0),
+             mLastMouseX(0),
+             mLastMouseY(0),
+             mClickCount(1),
+             mLastMouseDragButton(0)
+    {
+        mFocusHandler = new FocusHandler();
+    }
+
+    Gui::~Gui()
+    {
+        if (Widget::widgetExists(mTop))
+        {
+            setTop(NULL);
+        }
+
+        delete mFocusHandler;
+    }
+
+    void Gui::setTop(Widget* top)
+    {
+        if (mTop != NULL)
+        {
+            mTop->_setFocusHandler(NULL);
+        }
+        if (top != NULL)
+        {
+            top->_setFocusHandler(mFocusHandler);
+        }
+
+        mTop = top;
+    }
+
+    Widget* Gui::getTop() const
+    {
+        return mTop;
+    }
+
+    void Gui::setGraphics(Graphics* graphics)
+    {
+        mGraphics = graphics;
+    }
+
+    Graphics* Gui::getGraphics() const
+    {
+        return mGraphics;
+    }
+
+    void Gui::setInput(Input* input)
+    {
+        mInput = input;
+    }
+
+    Input* Gui::getInput() const
+    {
+        return mInput;
+    }
+
+    void Gui::logic()
+    {
+        if (mTop == NULL)
+        {
+            throw GCN_EXCEPTION("No top widget set");
+        }
+
+        handleModalFocus();
+        handleModalMouseInputFocus();
+
+        if (mInput != NULL)
+        {
+            mInput->_pollInput();
+
+            handleKeyInput();
+            handleMouseInput();
+ 
+        } // end if
+
+        mTop->logic();
+    }
+
+    void Gui::draw()
+    {
+        if (mTop == NULL)
+        {
+            throw GCN_EXCEPTION("No top widget set");
+        }
+        if (mGraphics == NULL)
+        {
+            throw GCN_EXCEPTION("No graphics set");
+        }
+
+        if (!mTop->isVisible())
+        {
+            return;
+        }
+
+        mGraphics->_beginDraw();
+
+        // If top has a frame,
+        // draw it before drawing top
+        if (mTop->getFrameSize() > 0)
+        {
+            Rectangle rec = mTop->getDimension();
+            rec.x -= mTop->getFrameSize();
+            rec.y -= mTop->getFrameSize();
+            rec.width += 2 * mTop->getFrameSize();
+            rec.height += 2 * mTop->getFrameSize();
+            mGraphics->pushClipArea(rec);
+            mTop->drawFrame(mGraphics);
+            mGraphics->popClipArea();
+        }
+
+        mGraphics->pushClipArea(mTop->getDimension());
+        mTop->draw(mGraphics);
+        mGraphics->popClipArea();
+
+        mGraphics->_endDraw();
+    }
+
+    void Gui::focusNone()
+    {
+        mFocusHandler->focusNone();
+    }
+
+    void Gui::setTabbingEnabled(bool tabbing)
+    {
+        mTabbing = tabbing;
+    }
+
+    bool Gui::isTabbingEnabled()
+    {
+        return mTabbing;
+    }
+
+    void Gui::addGlobalKeyListener(KeyListener* keyListener)
+    {
+        mKeyListeners.push_back(keyListener);
+    }
+
+    void Gui::removeGlobalKeyListener(KeyListener* keyListener)
+    {
+        mKeyListeners.remove(keyListener);
+    }
+
+    void Gui::handleMouseInput()
+    {
+        while (!mInput->isMouseQueueEmpty())
+         {
+             MouseInput mouseInput = mInput->dequeueMouseInput();
+
+             // Save the current mouse state. It will be needed if modal focus
+             // changes or modal mouse input focus changes.
+             mLastMouseX = mouseInput.getX();
+             mLastMouseY = mouseInput.getY();
+
+             switch (mouseInput.getType())
+             {
+               case MouseInput::PRESSED:
+                   handleMousePressed(mouseInput);
+                   break;
+               case MouseInput::RELEASED:
+                   handleMouseReleased(mouseInput);
+                   break;
+               case MouseInput::MOVED:
+                   handleMouseMoved(mouseInput);
+                   break;
+               case MouseInput::WHEEL_MOVED_DOWN:
+                   handleMouseWheelMovedDown(mouseInput);
+                   break;
+               case MouseInput::WHEEL_MOVED_UP:
+                   handleMouseWheelMovedUp(mouseInput);
+                   break;
+               default:
+                   throw GCN_EXCEPTION("Unknown mouse input type.");
+                   break;
+             }
+         }
+    }
+
+    void Gui::handleKeyInput()
+    {
+        while (!mInput->isKeyQueueEmpty())
+        {
+            KeyInput keyInput = mInput->dequeueKeyInput();
+
+            // Save modifiers state
+            mShiftPressed = keyInput.isShiftPressed();
+            mMetaPressed = keyInput.isMetaPressed();
+            mControlPressed = keyInput.isControlPressed();
+            mAltPressed = keyInput.isAltPressed();
+
+            KeyEvent keyEventToGlobalKeyListeners(NULL,
+                                                  mShiftPressed,
+                                                  mControlPressed,
+                                                  mAltPressed,
+                                                  mMetaPressed,
+                                                  keyInput.getType(),
+                                                  keyInput.isNumericPad(),
+                                                  keyInput.getKey());
+
+            distributeKeyEventToGlobalKeyListeners(keyEventToGlobalKeyListeners);
+
+            // If a global key listener consumes the event it will not be
+            // sent further to the source of the event.
+            if (keyEventToGlobalKeyListeners.isConsumed())
+            {
+                continue;
+            }
+
+            bool keyEventConsumed = false;
+            
+            // Send key inputs to the focused widgets
+            if (mFocusHandler->getFocused() != NULL)
+            {
+                KeyEvent keyEvent(getKeyEventSource(),
+                                  mShiftPressed,
+                                  mControlPressed,
+                                  mAltPressed,
+                                  mMetaPressed,
+                                  keyInput.getType(),
+                                  keyInput.isNumericPad(),
+                                  keyInput.getKey());
+                
+
+                if (!mFocusHandler->getFocused()->isFocusable())
+                {
+                    mFocusHandler->focusNone();
+                }
+                else
+                {                    
+                    distributeKeyEvent(keyEvent);                    
+                }
+
+                keyEventConsumed = keyEvent.isConsumed();
+            }
+
+            // If the key event hasn't been consumed and
+            // tabbing is enable check for tab press and
+            // change focus.
+            if (!keyEventConsumed
+                && mTabbing
+                && keyInput.getKey().getValue() == Key::TAB
+                && keyInput.getType() == KeyInput::PRESSED)
+            {
+                if (keyInput.isShiftPressed())
+                {
+                    mFocusHandler->tabPrevious();
+                }
+                else
+                {
+                    mFocusHandler->tabNext();
+                }
+            }                           
+                
+        } // end while
+    }
+
+    void Gui::handleMouseMoved(const MouseInput& mouseInput)
+    {
+        // Check if the mouse leaves the application window.
+        if (!mWidgetWithMouseQueue.empty()
+            && (mouseInput.getX() < 0
+                || mouseInput.getY() < 0
+                || !mTop->getDimension().isPointInRect(mouseInput.getX(), mouseInput.getY()))
+            )
+        {
+            // Distribute an event to all widgets in the "widget with mouse" queue.
+            while (!mWidgetWithMouseQueue.empty())
+            {
+                Widget* widget = mWidgetWithMouseQueue.front();
+
+                if (Widget::widgetExists(widget))
+                {
+                    distributeMouseEvent(widget,
+                                         MouseEvent::EXITED,
+                                         mouseInput.getButton(),
+                                         mouseInput.getX(),
+                                         mouseInput.getY(),
+                                         true,
+                                         true);
+                }
+
+                mWidgetWithMouseQueue.pop_front();
+            }
+
+            return;
+        }
+
+        // Check if there is a need to send mouse exited events by
+        // traversing the "widget with mouse" queue.
+        bool widgetWithMouseQueueCheckDone = mWidgetWithMouseQueue.empty();
+        while (!widgetWithMouseQueueCheckDone)
+        {
+            unsigned int iterations = 0;
+            std::deque<Widget*>::iterator iter;
+            for (iter = mWidgetWithMouseQueue.begin();
+                 iter != mWidgetWithMouseQueue.end();
+                 iter++)
+            {
+                Widget* widget = *iter;
+                            
+                // If a widget in the "widget with mouse queue" doesn't
+                // exists anymore it should be removed from the queue.
+                if (!Widget::widgetExists(widget))
+                {
+                    mWidgetWithMouseQueue.erase(iter);
+                    break;
+                }
+                else
+                {
+                    int x, y;
+                    widget->getAbsolutePosition(x, y);
+
+                    if (x > mouseInput.getX()
+                        || y > mouseInput.getY()
+                        || x + widget->getWidth() <= mouseInput.getX()
+                        || y + widget->getHeight() <= mouseInput.getY()
+                        || !widget->isVisible())
+                    {
+                        distributeMouseEvent(widget,
+                                             MouseEvent::EXITED,
+                                             mouseInput.getButton(),
+                                             mouseInput.getX(),
+                                             mouseInput.getY(),
+                                             true,
+                                             true);                                       
+                        mClickCount = 1;
+                        mLastMousePressTimeStamp = 0;
+                        mWidgetWithMouseQueue.erase(iter);
+                        break;
+                    }
+                }
+
+                iterations++;
+            }
+
+            widgetWithMouseQueueCheckDone = iterations == mWidgetWithMouseQueue.size();
+        }
+
+        // Check all widgets below the mouse to see if they are
+        // present in the "widget with mouse" queue. If a widget
+        // is not then it should be added and an entered event should
+        // be sent to it.
+        Widget* parent = getMouseEventSource(mouseInput.getX(), mouseInput.getY());
+        Widget* widget = parent;
+
+        // If a widget has modal mouse input focus then it will
+        // always be returned from getMouseEventSource, but we only wan't to send
+        // mouse entered events if the mouse has actually entered the widget with
+        // modal mouse input focus, hence we need to check if that's the case. If
+        // it's not we should simply ignore to send any mouse entered events.
+        if (mFocusHandler->getModalMouseInputFocused() != NULL
+            && widget == mFocusHandler->getModalMouseInputFocused()
+            && Widget::widgetExists(widget))
+        {
+            int x, y;
+            widget->getAbsolutePosition(x, y);
+
+            if (x > mouseInput.getX()
+                || y > mouseInput.getY()
+                || x + widget->getWidth() <= mouseInput.getX() 
+                || y + widget->getHeight() <= mouseInput.getY())
+            {
+                parent = NULL;
+            }
+        }
+
+        while (parent != NULL)
+        {
+            parent = (Widget*)widget->getParent();
+
+            // Check if the widget is present in the "widget with mouse" queue.
+            bool widgetIsPresentInQueue = false;
+            std::deque<Widget*>::iterator iter;
+            for (iter = mWidgetWithMouseQueue.begin();
+                 iter != mWidgetWithMouseQueue.end();
+                 iter++)
+            {
+                if (*iter == widget)
+                {
+                    widgetIsPresentInQueue = true;
+                    break;
+                }
+            }
+
+            // Widget is not present, send an entered event and add
+            // it to the "widget with mouse" queue.
+            if (!widgetIsPresentInQueue
+                && Widget::widgetExists(widget))
+            {
+                distributeMouseEvent(widget,
+                                     MouseEvent::ENTERED,
+                                     mouseInput.getButton(),
+                                     mouseInput.getX(),
+                                     mouseInput.getY(),
+                                     true,
+                                     true);
+                mWidgetWithMouseQueue.push_front(widget);
+            }
+
+            Widget* swap = widget;
+            widget = parent;
+            parent = (Widget*)swap->getParent();
+        }
+
+        if (mFocusHandler->getDraggedWidget() != NULL)
+        {
+            distributeMouseEvent(mFocusHandler->getDraggedWidget(),
+                                 MouseEvent::DRAGGED,
+                                 mLastMouseDragButton,
+                                 mouseInput.getX(),
+                                 mouseInput.getY());
+        }
+        else
+        {
+            Widget* sourceWidget = getMouseEventSource(mouseInput.getX(), mouseInput.getY());
+            distributeMouseEvent(sourceWidget,
+                                 MouseEvent::MOVED,
+                                 mouseInput.getButton(),
+                                 mouseInput.getX(),
+                                 mouseInput.getY());
+        }
+    }
+
+    void Gui::handleMousePressed(const MouseInput& mouseInput)
+    {
+        Widget* sourceWidget = getMouseEventSource(mouseInput.getX(), mouseInput.getY());
+
+        if (mFocusHandler->getDraggedWidget() != NULL)
+        {
+            sourceWidget = mFocusHandler->getDraggedWidget();
+        }
+
+        int sourceWidgetX, sourceWidgetY;
+        sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
+
+        if ((mFocusHandler->getModalFocused() != NULL
+            && sourceWidget->isModalFocused())
+            || mFocusHandler->getModalFocused() == NULL)
+        {
+            sourceWidget->requestFocus();
+        }
+
+        if (mouseInput.getTimeStamp() - mLastMousePressTimeStamp < 250
+            && mLastMousePressButton == mouseInput.getButton())
+        {
+            mClickCount++;
+        }
+        else
+        {
+            mClickCount = 1;
+        }
+
+        distributeMouseEvent(sourceWidget,
+                             MouseEvent::PRESSED,
+                             mouseInput.getButton(),
+                             mouseInput.getX(),
+                             mouseInput.getY());
+
+        mFocusHandler->setLastWidgetPressed(sourceWidget);
+
+        mFocusHandler->setDraggedWidget(sourceWidget);
+        mLastMouseDragButton = mouseInput.getButton();
+
+        mLastMousePressButton = mouseInput.getButton();
+        mLastMousePressTimeStamp = mouseInput.getTimeStamp();
+    }
+
+    void Gui::handleMouseWheelMovedDown(const MouseInput& mouseInput)
+    {
+        Widget* sourceWidget = getMouseEventSource(mouseInput.getX(), mouseInput.getY());
+
+        if (mFocusHandler->getDraggedWidget() != NULL)
+        {
+            sourceWidget = mFocusHandler->getDraggedWidget();
+        }
+
+        int sourceWidgetX, sourceWidgetY;
+        sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
+
+        distributeMouseEvent(sourceWidget,
+                             MouseEvent::WHEEL_MOVED_DOWN,
+                             mouseInput.getButton(),
+                             mouseInput.getX(),
+                             mouseInput.getY());
+    }
+
+    void Gui::handleMouseWheelMovedUp(const MouseInput& mouseInput)
+    {
+        Widget* sourceWidget = getMouseEventSource(mouseInput.getX(), mouseInput.getY());
+
+        if (mFocusHandler->getDraggedWidget() != NULL)
+        {
+            sourceWidget = mFocusHandler->getDraggedWidget();
+        }
+
+        int sourceWidgetX, sourceWidgetY;
+        sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
+
+        distributeMouseEvent(sourceWidget,
+                             MouseEvent::WHEEL_MOVED_UP,
+                             mouseInput.getButton(),
+                             mouseInput.getX(),
+                             mouseInput.getY());
+    }
+
+    void Gui::handleMouseReleased(const MouseInput& mouseInput)
+    {
+        Widget* sourceWidget = getMouseEventSource(mouseInput.getX(), mouseInput.getY());
+
+        if (mFocusHandler->getDraggedWidget() != NULL)
+        {
+            if (sourceWidget != mFocusHandler->getLastWidgetPressed())
+            {
+                mFocusHandler->setLastWidgetPressed(NULL);
+            }
+            
+            sourceWidget = mFocusHandler->getDraggedWidget();
+        }
+
+        int sourceWidgetX, sourceWidgetY;
+        sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
+        
+        distributeMouseEvent(sourceWidget,
+                             MouseEvent::RELEASED,
+                             mouseInput.getButton(),
+                             mouseInput.getX(),
+                             mouseInput.getY());
+
+        if (mouseInput.getButton() == mLastMousePressButton            
+            && mFocusHandler->getLastWidgetPressed() == sourceWidget)
+        {
+            distributeMouseEvent(sourceWidget,
+                                 MouseEvent::CLICKED,
+                                 mouseInput.getButton(),
+                                 mouseInput.getX(),
+                                 mouseInput.getY());
+            
+            mFocusHandler->setLastWidgetPressed(NULL);
+        }
+        else
+        {
+            mLastMousePressButton = 0;
+            mClickCount = 0;
+        }
+
+        if (mFocusHandler->getDraggedWidget() != NULL)
+        {
+            mFocusHandler->setDraggedWidget(NULL);
+        }
+    }
+
+    Widget* Gui::getWidgetAt(int x, int y)
+    {
+        // If the widget's parent has no child then we have found the widget..
+        Widget* parent = mTop;
+        Widget* child = mTop;
+
+        while (child != NULL)
+        {
+            Widget* swap = child;
+            int parentX, parentY;
+            parent->getAbsolutePosition(parentX, parentY);
+            child = parent->getWidgetAt(x - parentX, y - parentY);
+            parent = swap;
+        }
+
+        return parent;
+    }
+
+    Widget* Gui::getMouseEventSource(int x, int y)
+    {
+        Widget* widget = getWidgetAt(x, y);
+
+        if (mFocusHandler->getModalMouseInputFocused() != NULL
+            && !widget->isModalMouseInputFocused())
+        {
+            return mFocusHandler->getModalMouseInputFocused();
+        }
+
+        return widget;
+    }
+
+    Widget* Gui::getKeyEventSource()
+    {
+        Widget* widget = mFocusHandler->getFocused();
+
+        while (widget->_getInternalFocusHandler() != NULL
+               && widget->_getInternalFocusHandler()->getFocused() != NULL)
+        {
+            widget = widget->_getInternalFocusHandler()->getFocused();
+        }
+
+        return widget;
+    }
+
+    void Gui::distributeMouseEvent(Widget* source,
+                                   int type,
+                                   int button,
+                                   int x,
+                                   int y,
+                                   bool force,
+                                   bool toSourceOnly)
+    {
+        Widget* parent = source;
+        Widget* widget = source;
+
+        if (mFocusHandler->getModalFocused() != NULL
+            && !widget->isModalFocused()
+            && !force)
+        {
+            return;
+        }
+
+        if (mFocusHandler->getModalMouseInputFocused() != NULL
+            && !widget->isModalMouseInputFocused()
+            && !force)
+        {
+            return;
+        }
+
+        MouseEvent mouseEvent(source,
+                              mShiftPressed,
+                              mControlPressed,
+                              mAltPressed,
+                              mMetaPressed,
+                              type,
+                              button,
+                              x,
+                              y,
+                              mClickCount);
+
+        while (parent != NULL)
+        {
+            // If the widget has been removed due to input
+            // cancel the distribution.
+            if (!Widget::widgetExists(widget))
+            {
+                break;
+            }
+
+            parent = (Widget*)widget->getParent();
+
+            if (widget->isEnabled() || force)
+            {
+                int widgetX, widgetY;
+                widget->getAbsolutePosition(widgetX, widgetY);
+
+                mouseEvent.mX = x - widgetX;
+                mouseEvent.mY = y - widgetY;
+                                      
+                std::list<MouseListener*> mouseListeners = widget->_getMouseListeners();
+
+                // Send the event to all mouse listeners of the widget.
+                for (std::list<MouseListener*>::iterator it = mouseListeners.begin();
+                     it != mouseListeners.end();
+                     ++it)
+                {
+                    switch (mouseEvent.getType())
+                    {
+                      case MouseEvent::ENTERED:
+                          (*it)->mouseEntered(mouseEvent);
+                          break;
+                      case MouseEvent::EXITED:
+                          (*it)->mouseExited(mouseEvent);
+                          break;
+                      case MouseEvent::MOVED:
+                          (*it)->mouseMoved(mouseEvent);
+                          break;
+                      case MouseEvent::PRESSED:
+                          (*it)->mousePressed(mouseEvent);
+                          break;
+                      case MouseEvent::RELEASED:
+                          (*it)->mouseReleased(mouseEvent);
+                          break;
+                      case MouseEvent::WHEEL_MOVED_UP:
+                          (*it)->mouseWheelMovedUp(mouseEvent);
+                          break;
+                      case MouseEvent::WHEEL_MOVED_DOWN:
+                          (*it)->mouseWheelMovedDown(mouseEvent);
+                          break;
+                      case MouseEvent::DRAGGED:
+                          (*it)->mouseDragged(mouseEvent);
+                          break;
+                      case MouseEvent::CLICKED:
+                          (*it)->mouseClicked(mouseEvent);
+                          break;
+                      default:
+                          throw GCN_EXCEPTION("Unknown mouse event type.");
+                    }                    
+                }
+                
+                if (toSourceOnly)
+                {
+                    break;
+                }
+
+            }
+
+            Widget* swap = widget;
+            widget = parent;
+            parent = (Widget*)swap->getParent();
+
+            // If a non modal focused widget has been reach
+            // and we have modal focus cancel the distribution.
+            if (mFocusHandler->getModalFocused() != NULL
+                && !widget->isModalFocused())
+            {
+                break;
+            }
+
+            // If a non modal mouse input focused widget has been reach
+            // and we have modal mouse input focus cancel the distribution.
+            if (mFocusHandler->getModalMouseInputFocused() != NULL
+                && !widget->isModalMouseInputFocused())
+            {
+                break;
+            }
+        }
+    }
+
+    void Gui::distributeKeyEvent(KeyEvent& keyEvent)
+    {
+        Widget* parent = keyEvent.getSource();
+        Widget* widget = keyEvent.getSource();
+
+        if (mFocusHandler->getModalFocused() != NULL
+            && !widget->isModalFocused())
+        {
+            return;
+        }
+
+        if (mFocusHandler->getModalMouseInputFocused() != NULL
+            && !widget->isModalMouseInputFocused())
+        {
+            return;
+        }
+
+        while (parent != NULL)
+        {
+            // If the widget has been removed due to input
+            // cancel the distribution.
+            if (!Widget::widgetExists(widget))
+            {
+                break;
+            }
+
+            parent = (Widget*)widget->getParent();
+
+            if (widget->isEnabled())
+            {
+                std::list<KeyListener*> keyListeners = widget->_getKeyListeners();
+            
+                // Send the event to all key listeners of the source widget.
+                for (std::list<KeyListener*>::iterator it = keyListeners.begin();
+                     it != keyListeners.end();
+                     ++it)
+                {
+                    switch (keyEvent.getType())
+                    {
+                      case KeyEvent::PRESSED:
+                          (*it)->keyPressed(keyEvent);
+                          break;
+                      case KeyEvent::RELEASED:
+                          (*it)->keyReleased(keyEvent);
+                          break;
+                      default:
+                          throw GCN_EXCEPTION("Unknown key event type.");
+                    }                
+                }
+            }
+
+            Widget* swap = widget;
+            widget = parent;
+            parent = (Widget*)swap->getParent();
+
+            // If a non modal focused widget has been reach
+            // and we have modal focus cancel the distribution.
+            if (mFocusHandler->getModalFocused() != NULL
+                && !widget->isModalFocused())
+            {
+                break;
+            }
+        }
+    }
+
+    void Gui::distributeKeyEventToGlobalKeyListeners(KeyEvent& keyEvent)
+    {
+        KeyListenerListIterator it;
+
+        for (it = mKeyListeners.begin(); it != mKeyListeners.end(); it++)
+        {
+            switch (keyEvent.getType())
+            {
+              case KeyEvent::PRESSED:
+                  (*it)->keyPressed(keyEvent);
+                  break;
+              case KeyEvent::RELEASED:
+                  (*it)->keyReleased(keyEvent);
+                  break;
+              default:
+                  throw GCN_EXCEPTION("Unknown key event type.");
+            }
+
+            if (keyEvent.isConsumed())
+            {
+                break;
+            }
+        }
+    }
+
+    void Gui::handleModalMouseInputFocus()
+    {
+        // Check if modal mouse input focus has been gained by a widget.
+        if ((mFocusHandler->getLastWidgetWithModalMouseInputFocus() 
+                != mFocusHandler->getModalMouseInputFocused())
+             && (mFocusHandler->getLastWidgetWithModalMouseInputFocus() == NULL))
+        {
+            handleModalFocusGained();
+            mFocusHandler->setLastWidgetWithModalMouseInputFocus(mFocusHandler->getModalMouseInputFocused());
+        }
+        // Check if modal mouse input focus has been released.
+        else if ((mFocusHandler->getLastWidgetWithModalMouseInputFocus()
+                    != mFocusHandler->getModalMouseInputFocused())
+                    && (mFocusHandler->getLastWidgetWithModalMouseInputFocus() != NULL))
+        {
+            handleModalFocusReleased();
+            mFocusHandler->setLastWidgetWithModalMouseInputFocus(NULL);
+        }
+    }
+
+     void Gui::handleModalFocus()
+    {
+        // Check if modal focus has been gained by a widget.
+        if ((mFocusHandler->getLastWidgetWithModalFocus() 
+                != mFocusHandler->getModalFocused())
+             && (mFocusHandler->getLastWidgetWithModalFocus() == NULL))
+        {
+            handleModalFocusGained();
+            mFocusHandler->setLastWidgetWithModalFocus(mFocusHandler->getModalFocused());
+        }
+        // Check if modal focus has been released.
+        else if ((mFocusHandler->getLastWidgetWithModalFocus()
+                    != mFocusHandler->getModalFocused())
+                    && (mFocusHandler->getLastWidgetWithModalFocus() != NULL))
+        {
+            handleModalFocusReleased();
+            mFocusHandler->setLastWidgetWithModalFocus(NULL);
+        }
+    }
+
+    void Gui::handleModalFocusGained()
+    {
+         // Distribute an event to all widgets in the "widget with mouse" queue.
+        while (!mWidgetWithMouseQueue.empty())
+        {
+            Widget* widget = mWidgetWithMouseQueue.front();
+
+            if (Widget::widgetExists(widget))
+            {
+                distributeMouseEvent(widget,
+                                     MouseEvent::EXITED,
+                                     mLastMousePressButton,
+                                     mLastMouseX,
+                                     mLastMouseY,
+                                     true,
+                                     true);
+            }
+
+            mWidgetWithMouseQueue.pop_front();
+        }
+
+        mFocusHandler->setLastWidgetWithModalMouseInputFocus(mFocusHandler->getModalMouseInputFocused());
+    }
+
+    void Gui::handleModalFocusReleased()
+    {
+         // Check all widgets below the mouse to see if they are
+        // present in the "widget with mouse" queue. If a widget
+        // is not then it should be added and an entered event should
+        // be sent to it.
+        Widget* widget = getMouseEventSource(mLastMouseX, mLastMouseY);
+        Widget* parent = widget;
+
+        while (parent != NULL)
+        {
+            parent = (Widget*)widget->getParent();
+
+            // Check if the widget is present in the "widget with mouse" queue.
+            bool widgetIsPresentInQueue = false;
+            std::deque<Widget*>::iterator iter;
+            for (iter = mWidgetWithMouseQueue.begin();
+                 iter != mWidgetWithMouseQueue.end();
+                 iter++)
+            {
+                if (*iter == widget)
+                {
+                    widgetIsPresentInQueue = true;
+                    break;
+                }
+            }
+
+            // Widget is not present, send an entered event and add
+            // it to the "widget with mouse" queue.
+            if (!widgetIsPresentInQueue
+                && Widget::widgetExists(widget))
+            {
+                distributeMouseEvent(widget,
+                                     MouseEvent::ENTERED,
+                                     mLastMousePressButton,
+                                     mLastMouseX,
+                                     mLastMouseY,
+                                     false,
+                                     true);
+                mWidgetWithMouseQueue.push_front(widget);
+            }
+
+            Widget* swap = widget;
+            widget = parent;
+            parent = (Widget*)swap->getParent();
+        }
+    }
+}