Made buy dialog resizable and added a WindowListener class for listening for

window resize and move events.

14 files changed, 284 insertions, 134 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ba4ae221..725dd5a6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -52,6 +52,8 @@ MARK_AS_ADVANCED(SDL_LIBRARY)
 SET(SRCS
     gui/widgets/resizegrip.cpp
     gui/widgets/resizegrip.h
+    gui/box.h
+    gui/box.cpp
     gui/browserbox.cpp
     gui/browserbox.h
     gui/buddywindow.cpp
@@ -88,8 +90,12 @@ SET(SRCS
     gui/gccontainer.h
     gui/gui.cpp
     gui/gui.h
+    gui/hbox.h
+    gui/hbox.cpp
     gui/help.cpp
     gui/help.h
+    gui/inttextbox.cpp
+    gui/inttextbox.h
     gui/inventorywindow.cpp
     gui/inventorywindow.h
     gui/itemcontainer.cpp
@@ -165,22 +171,17 @@ SET(SRCS
     gui/textfield.h
     gui/trade.cpp
     gui/trade.h
+    gui/updatewindow.h
+    gui/updatewindow.cpp
+    gui/vbox.h
+    gui/vbox.cpp
     gui/viewport.cpp
     gui/viewport.h
     gui/window.cpp
     gui/window.h
     gui/windowcontainer.cpp
     gui/windowcontainer.h
-    gui/inttextbox.h
-    gui/inttextbox.cpp
-    gui/box.h
-    gui/box.cpp
-    gui/vbox.h
-    gui/vbox.cpp
-    gui/hbox.h
-    gui/hbox.cpp
-    gui/updatewindow.h
-    gui/updatewindow.cpp
+    gui/windowlistener.h
     net/beinghandler.h
     net/beinghandler.cpp
     net/buysellhandler.h
diff --git a/src/Makefile.am b/src/Makefile.am
index d2e4d1c9..5f1ee760 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,6 +1,8 @@
 bin_PROGRAMS = tmw
 tmw_SOURCES = gui/widgets/resizegrip.cpp \
 	      gui/widgets/resizegrip.h \
+	      gui/box.h \
+	      gui/box.cpp \
 	      gui/browserbox.cpp \
 	      gui/browserbox.h \
 	      gui/buddywindow.cpp \
@@ -37,8 +39,12 @@ tmw_SOURCES = gui/widgets/resizegrip.cpp \
 	      gui/gccontainer.h \
 	      gui/gui.cpp \
 	      gui/gui.h \
+	      gui/hbox.h \
+	      gui/hbox.cpp \
 	      gui/help.cpp \
 	      gui/help.h \
+	      gui/inttextbox.h \
+	      gui/inttextbox.cpp \
 	      gui/inventorywindow.cpp \
 	      gui/inventorywindow.h \
 	      gui/itemcontainer.cpp \
@@ -114,22 +120,17 @@ tmw_SOURCES = gui/widgets/resizegrip.cpp \
 	      gui/textfield.h \
 	      gui/trade.cpp \
 	      gui/trade.h \
+	      gui/updatewindow.h \
+	      gui/updatewindow.cpp \
+	      gui/vbox.h \
+	      gui/vbox.cpp \
 	      gui/viewport.cpp \
 	      gui/viewport.h \
 	      gui/window.cpp \
 	      gui/window.h \
 	      gui/windowcontainer.cpp \
 	      gui/windowcontainer.h \
-	      gui/inttextbox.h \
-	      gui/inttextbox.cpp \
-	      gui/box.h \
-	      gui/box.cpp \
-	      gui/vbox.h \
-	      gui/vbox.cpp \
-	      gui/hbox.h \
-	      gui/hbox.cpp \
-	      gui/updatewindow.h \
-	      gui/updatewindow.cpp \
+	      gui/windowlistener.h
 	      net/beinghandler.h \
 	      net/beinghandler.cpp \
 	      net/buysellhandler.h \
diff --git a/src/engine.cpp b/src/engine.cpp
index 4a0f2f1f..4e37dc27 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -72,15 +72,11 @@ void Engine::changeMap(const std::string &mapPath)
     particleEngine->clear();
 
     // Store full map path in global var
-    const std::string base = "maps/" + mapPath.substr(0, mapPath.rfind("."));
+    map_path = "maps/" + mapPath.substr(0, mapPath.rfind(".")) + ".tmx";
     ResourceManager *resman = ResourceManager::getInstance();
-    if (resman->exists(base + ".tmx"))
+    if (!resman->exists(map_path))
     {
-        map_path = base + ".tmx";
-    }
-    else
-    {
-        map_path = base + ".tmx.gz";
+        map_path += ".gz";
     }
 
     // Attempt to load the new map
diff --git a/src/gui/buy.cpp b/src/gui/buy.cpp
index ea477e07..3c7cbd51 100644
--- a/src/gui/buy.cpp
+++ b/src/gui/buy.cpp
@@ -43,6 +43,11 @@ BuyDialog::BuyDialog(Network *network):
     Window("Buy"), mNetwork(network),
     mMoney(0), mAmountItems(0), mMaxItems(0)
 {
+    setResizable(true);
+    setMinWidth(260);
+    setMinHeight(230);
+    setDefaultSize(0, 0, 260, 230);
+
     mShopItems = new ShopItems;
 
     mShopItemList = new ShopListBox(mShopItems, mShopItems);
@@ -57,32 +62,15 @@ BuyDialog::BuyDialog(Network *network):
     mItemDescLabel = new gcn::Label("Description:");
     mItemEffectLabel = new gcn::Label("Effect:");
 
-    setContentSize(260, 210);
-    mScrollArea->setHorizontalScrollPolicy(gcn::ScrollArea::SHOW_NEVER);
-    mScrollArea->setDimension(gcn::Rectangle(5, 5, 250, 110));
-    mShopItemList->setDimension(gcn::Rectangle(5, 5, 238, 110));
-
-    mSlider->setDimension(gcn::Rectangle(5, 120, 200, 10));
-    mSlider->setEnabled(false);
-
-    mQuantityLabel->setPosition(215, 120);
-    mMoneyLabel->setPosition(5, 130);
-
-    mIncreaseButton->setPosition(40, 186);
     mIncreaseButton->setSize(20, 20);
-    mIncreaseButton->setEnabled(false);
-
-    mDecreaseButton->setPosition(10, 186);
     mDecreaseButton->setSize(20, 20);
-    mDecreaseButton->setEnabled(false);
+    mQuantityLabel->setWidth(60);
 
-    mBuyButton->setPosition(180, 186);
+    mScrollArea->setHorizontalScrollPolicy(gcn::ScrollArea::SHOW_NEVER);
+    mIncreaseButton->setEnabled(false);
+    mDecreaseButton->setEnabled(false);
     mBuyButton->setEnabled(false);
-
-    mQuitButton->setPosition(212, 186);
-
-    mItemEffectLabel->setDimension(gcn::Rectangle(5, 150, 240, 14));
-    mItemDescLabel->setDimension(gcn::Rectangle(5, 169, 240, 14));
+    mSlider->setEnabled(false);
 
     mShopItemList->setActionEventId("item");
     mSlider->setActionEventId("slider");
@@ -101,6 +89,8 @@ BuyDialog::BuyDialog(Network *network):
     add(mItemDescLabel);
     add(mItemEffectLabel);
 
+    addWindowListener(this);
+    loadWindowState();
     setLocationRelativeTo(getParent());
 }
 
@@ -207,6 +197,49 @@ void BuyDialog::selectionChanged(const SelectionEvent &event)
     mSlider->gcn::Slider::setScale(1, mMaxItems);
 }
 
+void BuyDialog::windowResized(const WindowEvent &event)
+{
+    gcn::Rectangle area = getChildrenArea();
+    int width = area.width;
+    int height = area.height;
+
+    mDecreaseButton->setPosition(8, height - 8 - mDecreaseButton->getHeight());
+    mIncreaseButton->setPosition(
+            mDecreaseButton->getX() + mDecreaseButton->getWidth() + 5,
+            mDecreaseButton->getY());
+
+    mQuitButton->setPosition(
+            width - 8 - mQuitButton->getWidth(),
+            height - 8 - mQuitButton->getHeight());
+    mBuyButton->setPosition(
+            mQuitButton->getX() - 5 - mBuyButton->getWidth(),
+            mQuitButton->getY());
+
+    mItemDescLabel->setDimension(gcn::Rectangle(8,
+                mBuyButton->getY() - 5 - mItemDescLabel->getHeight(),
+                width - 16,
+                mItemDescLabel->getHeight()));
+    mItemEffectLabel->setDimension(gcn::Rectangle(8,
+                mItemDescLabel->getY() - 5 - mItemEffectLabel->getHeight(),
+                width - 16,
+                mItemEffectLabel->getHeight()));
+    mMoneyLabel->setDimension(gcn::Rectangle(8,
+                mItemEffectLabel->getY() - 5 - mMoneyLabel->getHeight(),
+                width - 16,
+                mMoneyLabel->getHeight()));
+
+    mQuantityLabel->setPosition(
+            width - mQuantityLabel->getWidth() - 8,
+            mMoneyLabel->getY() - 5 - mQuantityLabel->getHeight());
+    mSlider->setDimension(gcn::Rectangle(8,
+                mQuantityLabel->getY(),
+                mQuantityLabel->getX() - 8 - 8,
+                10));
+
+    mScrollArea->setDimension(gcn::Rectangle(8, 8, width - 16,
+                mSlider->getY() - 5 - 8));
+}
+
 void
 BuyDialog::updateButtonsAndLabels()
 {
@@ -247,8 +280,6 @@ BuyDialog::updateButtonsAndLabels()
     // Update quantity and money labels
     mQuantityLabel->setCaption(
         toString(mAmountItems) + " / " + toString(mMaxItems));
-    mQuantityLabel->adjustSize();
     mMoneyLabel->setCaption("Price: " + toString(price)  + " GP / "
                              + toString(mMoney - price) + " GP" );
-    mMoneyLabel->adjustSize();
 }
diff --git a/src/gui/buy.h b/src/gui/buy.h
index 8f1893dc..d8016216 100644
--- a/src/gui/buy.h
+++ b/src/gui/buy.h
@@ -41,7 +41,8 @@ class ListBox;
  *
  * \ingroup Interface
  */
-class BuyDialog : public Window, public gcn::ActionListener, SelectionListener
+class BuyDialog : public Window, public gcn::ActionListener, SelectionListener,
+    WindowListener
 {
     public:
         /**
@@ -99,6 +100,11 @@ class BuyDialog : public Window, public gcn::ActionListener, SelectionListener
         void
         updateButtonsAndLabels();
 
+        /**
+         * Called whenever the window is resized.
+         */
+        void windowResized(const WindowEvent &event);
+
     private:
         Network *mNetwork;
         gcn::Button *mBuyButton;
diff --git a/src/gui/inventorywindow.cpp b/src/gui/inventorywindow.cpp
index da391a7b..6e5ae84a 100644
--- a/src/gui/inventorywindow.cpp
+++ b/src/gui/inventorywindow.cpp
@@ -82,6 +82,7 @@ InventoryWindow::InventoryWindow():
 
     mUseButton->setSize(48, mUseButton->getHeight());
 
+    addWindowListener(this);
     loadWindowState();
 }
 
@@ -175,17 +176,7 @@ void InventoryWindow::mouseClicked(gcn::MouseEvent &event)
     }
 }
 
-void InventoryWindow::mouseDragged(gcn::MouseEvent &event)
-{
-    int tmpWidth = getWidth(), tmpHeight = getHeight();
-    Window::mouseDragged(event);
-    if (getWidth() != tmpWidth || getHeight() != tmpHeight)
-    {
-        updateWidgets();
-    }
-}
-
-void InventoryWindow::updateWidgets()
+void InventoryWindow::windowResized(const WindowEvent &event)
 {
     gcn::Rectangle area = getChildrenArea();
     int width = area.width;
@@ -235,15 +226,3 @@ Item* InventoryWindow::getItem()
 {
     return mItems->getItem();
 }
-
-void InventoryWindow::loadWindowState()
-{
-    Window::loadWindowState();
-    updateWidgets();
-}
-
-void InventoryWindow::resetToDefaultSize()
-{
-    Window::resetToDefaultSize();
-    updateWidgets();
-}
diff --git a/src/gui/inventorywindow.h b/src/gui/inventorywindow.h
index 5ee89fef..14e1f25f 100644
--- a/src/gui/inventorywindow.h
+++ b/src/gui/inventorywindow.h
@@ -26,8 +26,9 @@
 
 #include <guichan/actionlistener.hpp>
 
-#include "window.h"
 #include "selectionlistener.h"
+#include "window.h"
+#include "windowlistener.h"
 
 #include "../guichanfwd.h"
 
@@ -39,7 +40,8 @@ class ItemContainer;
  *
  * \ingroup Interface
  */
-class InventoryWindow : public Window, gcn::ActionListener, SelectionListener
+class InventoryWindow : public Window, gcn::ActionListener, SelectionListener,
+    WindowListener
 {
     public:
         /**
@@ -59,14 +61,8 @@ class InventoryWindow : public Window, gcn::ActionListener, SelectionListener
 
         void mouseClicked(gcn::MouseEvent &event);
 
-        void mouseDragged(gcn::MouseEvent &event);
-
         Item* getItem();
 
-        void loadWindowState();
-
-        void resetToDefaultSize();
-
         /**
          * Updates labels to currently selected item.
          *
@@ -74,11 +70,14 @@ class InventoryWindow : public Window, gcn::ActionListener, SelectionListener
          */
         void selectionChanged(const SelectionEvent &event);
 
+        /**
+         * Called whenever the window is resized.
+         */
+        void windowResized(const WindowEvent &event);
+
     private:
         void updateButtons();    /**< Updates button states. */
 
-        void updateWidgets();    /**< Updates widgets size/position. */
-
         ItemContainer *mItems;
 
         gcn::Button *mUseButton, *mDropButton;
diff --git a/src/gui/itemshortcutwindow.cpp b/src/gui/itemshortcutwindow.cpp
index 2ee2cfde..efac9353 100644
--- a/src/gui/itemshortcutwindow.cpp
+++ b/src/gui/itemshortcutwindow.cpp
@@ -38,7 +38,7 @@ ItemShortcutWindow::ItemShortcutWindow()
 
     mItems = new ItemShortcutContainer();
 
-    int border = (SCROLL_PADDING * 2) + (getPadding() * 2);
+    int border = SCROLL_PADDING * 2 + getPadding() * 2;
     setMinWidth(mItems->getBoxWidth() + border);
     setMinHeight(mItems->getBoxHeight() + border);
     setMaxWidth(mItems->getBoxWidth() * mItems->getMaxItems() + border);
@@ -50,6 +50,7 @@ ItemShortcutWindow::ItemShortcutWindow()
 
     add(mInvenScroll);
 
+    addWindowListener(this);
     loadWindowState();
 }
 
@@ -64,32 +65,11 @@ void ItemShortcutWindow::logic()
     Window::logic();
 }
 
-void ItemShortcutWindow::mouseDragged(gcn::MouseEvent &event)
-{
-    const int tWidth = getWidth(), tHeight = getHeight();
-    Window::mouseDragged(event);
-    if (getWidth() != tWidth || getHeight() != tHeight)
-    {
-        updateWidgets();
-    }
-}
-
-void ItemShortcutWindow::updateWidgets()
+void ItemShortcutWindow::windowResized(const WindowEvent &event)
 {
     const gcn::Rectangle area = getChildrenArea();
 
-    mInvenScroll->setSize(area.width - SCROLL_PADDING,
-        area.height - SCROLL_PADDING);
-}
-
-void ItemShortcutWindow::loadWindowState()
-{
-    Window::loadWindowState();
-    updateWidgets();
-}
-
-void ItemShortcutWindow::resetToDefaultSize()
-{
-    Window::resetToDefaultSize();
-    updateWidgets();
+    mInvenScroll->setSize(
+            area.width - SCROLL_PADDING,
+            area.height - SCROLL_PADDING);
 }
diff --git a/src/gui/itemshortcutwindow.h b/src/gui/itemshortcutwindow.h
index 16a06b55..83bc348d 100644
--- a/src/gui/itemshortcutwindow.h
+++ b/src/gui/itemshortcutwindow.h
@@ -24,6 +24,7 @@
 #define _TMW_ITEMSHORTCUTWINDOW_H
 
 #include "window.h"
+#include "windowlistener.h"
 
 #include "../guichanfwd.h"
 
@@ -34,7 +35,7 @@ class ItemShortcutContainer;
  *
  * \ingroup Interface
  */
-class ItemShortcutWindow : public Window
+class ItemShortcutWindow : public Window, WindowListener
 {
     public:
         /**
@@ -52,15 +53,12 @@ class ItemShortcutWindow : public Window
          */
         void logic();
 
-        void mouseDragged(gcn::MouseEvent &event);
-
-        void loadWindowState();
-
-        void resetToDefaultSize();
+        /**
+         * Called whenever the window is resized.
+         */
+        void windowResized(const WindowEvent &event);
 
     private:
-        void updateWidgets();    /**< Updates widgets size/position. */
-
         ItemShortcutContainer *mItems;
 
         gcn::ScrollArea *mInvenScroll;
diff --git a/src/gui/selectionlistener.h b/src/gui/selectionlistener.h
index b39672b5..917a4871 100644
--- a/src/gui/selectionlistener.h
+++ b/src/gui/selectionlistener.h
@@ -25,33 +25,23 @@
 #define _TMW_SELECTIONLISTENER_H__
 
 #include <guichan/widget.hpp>
+#include <guichan/event.hpp>
 
 /**
  * An event that characterizes a change in the current selection.
  *
  * \ingroup GUI
  */
-class SelectionEvent
+class SelectionEvent : public gcn::Event
 {
     public:
         /**
          * Constructor.
          */
         SelectionEvent(gcn::Widget *source):
-            mSource(source)
+            gcn::Event(source)
         {
         }
-
-        /**
-         * The widget from which the event originated.
-         */
-        gcn::Widget* getSource() const
-        {
-            return mSource;
-        }
-
-    private:
-        gcn::Widget *mSource;
 };
 
 /**
diff --git a/src/gui/status.h b/src/gui/status.h
index de530bc9..10773e10 100644
--- a/src/gui/status.h
+++ b/src/gui/status.h
@@ -41,7 +41,8 @@ class ProgressBar;
  *
  * \ingroup Interface
  */
-class StatusWindow : public Window, public gcn::ActionListener {
+class StatusWindow : public Window, public gcn::ActionListener
+{
     public:
         /**
          * Constructor.
diff --git a/src/gui/window.cpp b/src/gui/window.cpp
index 8cacd23e..650016cb 100644
--- a/src/gui/window.cpp
+++ b/src/gui/window.cpp
@@ -220,6 +220,8 @@ void Window::setWidth(int width)
     {
         mGrip->setX(getWidth() - mGrip->getWidth() - getChildrenArea().x);
     }
+
+    fireWindowEvent(WindowEvent(this, WindowEvent::WINDOW_RESIZED));
 }
 
 void Window::setHeight(int height)
@@ -230,6 +232,8 @@ void Window::setHeight(int height)
     {
         mGrip->setY(getHeight() - mGrip->getHeight() - getChildrenArea().y);
     }
+
+    fireWindowEvent(WindowEvent(this, WindowEvent::WINDOW_RESIZED));
 }
 
 void Window::setDimension(const gcn::Rectangle &dimension)
@@ -241,9 +245,30 @@ void Window::setDimension(const gcn::Rectangle &dimension)
         mGrip->setX(getWidth() - mGrip->getWidth() - getChildrenArea().x);
         mGrip->setY(getHeight() - mGrip->getHeight() - getChildrenArea().y);
     }
+
+    fireWindowEvent(WindowEvent(this, WindowEvent::WINDOW_RESIZED));
+    fireWindowEvent(WindowEvent(this, WindowEvent::WINDOW_MOVED));
+}
+
+void Window::setPosition(int x, int y)
+{
+    gcn::Window::setPosition(x, y);
+    fireWindowEvent(WindowEvent(this, WindowEvent::WINDOW_MOVED));
+}
+
+void Window::setX(int x)
+{
+    gcn::Window::setX(x);
+    fireWindowEvent(WindowEvent(this, WindowEvent::WINDOW_MOVED));
+}
+
+void Window::setY(int y)
+{
+    gcn::Window::setY(y);
+    fireWindowEvent(WindowEvent(this, WindowEvent::WINDOW_MOVED));
 }
 
-void Window::setLocationRelativeTo(gcn::Widget* widget)
+void Window::setLocationRelativeTo(gcn::Widget *widget)
 {
     int wx, wy;
     int x, y;
@@ -561,3 +586,21 @@ int Window::getResizeHandles(gcn::MouseEvent &event)
 
     return resizeHandles;
 }
+
+void Window::fireWindowEvent(const WindowEvent &event)
+{
+    WindowListeners::iterator i_end = mListeners.end();
+    WindowListeners::iterator i = mListeners.begin();
+
+    switch (event.getType())
+    {
+        case WindowEvent::WINDOW_MOVED:
+            for (; i != i_end; ++i)
+            { (*i)->windowMoved(event); }
+            break;
+        case WindowEvent::WINDOW_RESIZED:
+            for (; i != i_end; ++i)
+            { (*i)->windowResized(event); }
+            break;
+    }
+}
diff --git a/src/gui/window.h b/src/gui/window.h
index 625d7541..b83aa78b 100644
--- a/src/gui/window.h
+++ b/src/gui/window.h
@@ -28,6 +28,8 @@
 
 #include "../guichanfwd.h"
 
+#include "windowlistener.h"
+
 class ConfigListener;
 class GCContainer;
 class ImageRect;
@@ -115,6 +117,21 @@ class Window : public gcn::Window
         void setDimension(const gcn::Rectangle &dimension);
 
         /**
+         * Sets the position of this window.
+         */
+        void setPosition(int x, int y);
+
+        /**
+         * Sets the window x coordinate.
+         */
+        void setX(int x);
+
+        /**
+         * Sets the window y coordinate.
+         */
+        void setY(int y);
+
+        /**
          * Sets the location relative to the given widget.
          */
         void setLocationRelativeTo(gcn::Widget *widget);
@@ -255,6 +272,20 @@ class Window : public gcn::Window
          */
         virtual void resetToDefaultSize();
 
+        /**
+         * Adds a listener to the list that's notified when the window is
+         * moved or resized.
+         */
+        void addWindowListener(WindowListener *listener)
+        { mListeners.push_back(listener); }
+
+        /**
+         * Removes a listener from the list that's notified when the window is
+         * moved or resized.
+         */
+        void removeWindowListener(WindowListener *listener)
+        { mListeners.remove(listener); }
+
         enum ResizeHandles
         {
             TOP    = 0x01,
@@ -310,6 +341,14 @@ class Window : public gcn::Window
          * where two borders are moved at the same time.
          */
         static const int resizeBorderWidth = 10;
+
+    private:
+        /**
+         * Sends out a window event to the list of selection listeners.
+         */
+        void fireWindowEvent(const WindowEvent &event);
+
+        WindowListeners mListeners;
 };
 
 #endif
diff --git a/src/gui/windowlistener.h b/src/gui/windowlistener.h
new file mode 100644
index 00000000..08aab71d
--- /dev/null
+++ b/src/gui/windowlistener.h
@@ -0,0 +1,86 @@
+/*
+ *  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
+ *
+ *  $Id$
+ */
+
+#ifndef _TMW_WINDOW_LISTENER_H_
+#define _TMW_WINDOW_LISTENER_H_
+
+#include <guichan/widgets/window.hpp>
+#include <guichan/event.hpp>
+
+/**
+ * An event that characterizes a window move or resize.
+ *
+ * \ingroup GUI
+ */
+class WindowEvent : public gcn::Event
+{
+    public:
+        /**
+         * Constructor.
+         */
+        WindowEvent(gcn::Window *source, int type):
+            gcn::Event(source)
+        {
+            mType = type;
+        }
+
+        /**
+         * Returns the event type.
+         */
+        int getType() const
+        { return mType; }
+
+        enum WindowEventType
+        {
+            WINDOW_MOVED,
+            WINDOW_RESIZED
+        };
+};
+
+/**
+ * The listener that's notified when a window is moved or resized.
+ *
+ * \ingroup GUI
+ */
+class WindowListener
+{
+    public:
+        /**
+         * Virtual destructor.
+         */
+        virtual ~WindowListener() {}
+
+        /**
+         * Called whenever the window is moved.
+         */
+        virtual void windowMoved(const WindowEvent &event) {}
+
+        /**
+         * Called whenever the window is resized.
+         */
+        virtual void windowResized(const WindowEvent &event) {}
+};
+
+typedef std::list<WindowListener*> WindowListeners;
+
+#endif