Subclassed ShopListBox from ListBox to get rid of some duplicated code, and

fixed a problem with scrolling to the current selection. Also aligned the text
a bit better and put the price in parenthesis.

7 files changed, 88 insertions, 143 deletions

diff --git a/src/gui/buy.cpp b/src/gui/buy.cpp
index 91488595..c701499c 100644
--- a/src/gui/buy.cpp
+++ b/src/gui/buy.cpp
@@ -88,7 +88,6 @@ BuyDialog::BuyDialog(Network *network):
     mShopItemList->setEventId("item");
     mSlider->setEventId("slider");
 
-    mShopItemList->addActionListener(this);
     mShopItemList->addSelectionListener(this);
     mSlider->addActionListener(this);
 
@@ -115,7 +114,7 @@ void BuyDialog::setMoney(int amount)
 {
     mMoney = amount;
     mShopItemList->setPlayersMoney(amount);
-    mMoneyLabel->setCaption("Price : 0 GP / " + toString(mMoney)  + " GP");
+    mMoneyLabel->setCaption("Price: 0 GP / " + toString(mMoney)  + " GP");
     mMoneyLabel->adjustSize();
 }
 
@@ -132,7 +131,7 @@ void BuyDialog::reset()
     mDecreaseButton->setEnabled(false);
     mQuantityLabel->setCaption("0");
     mQuantityLabel->adjustSize();
-    mMoneyLabel->setCaption("Price : 0 GP / " + toString(mMoney) + " GP");
+    mMoneyLabel->setCaption("Price: 0 GP / " + toString(mMoney) + " GP");
     mMoneyLabel->adjustSize();
     mItemDescLabel->setCaption("");
     mItemEffectLabel->setCaption("");
@@ -148,31 +147,7 @@ void BuyDialog::action(const std::string& eventId, gcn::Widget* widget)
 {
     int selectedItem = mShopItemList->getSelected();
 
-    if (eventId == "item")
-    {
-        // Reset amount of items and update labels
-        mAmountItems = 0;
-        mSlider->setValue(0);
-        mQuantityLabel->setCaption("0");
-        mQuantityLabel->adjustSize();
-        mMoneyLabel->setCaption("Price : 0 GP / " + toString(mMoney) + " GP");
-        mMoneyLabel->adjustSize();
-
-        // Disable buttons for buying and decreasing
-        mBuyButton->setEnabled(false);
-        mDecreaseButton->setEnabled(false);
-
-        // If no item was selected, none can be bought, otherwise
-        // calculate how many the player can afford
-        mMaxItems = (mShopItemList->getSelected() == -1) ? 0 :
-            mMoney / mShopItems->at(selectedItem).price;
-
-        // When at least one item can be bought, enable the slider and the
-        // increase button
-        mIncreaseButton->setEnabled(mMaxItems > 0);
-        mSlider->setEnabled(mMaxItems > 0);
-    }
-    else if (eventId == "quit")
+    if (eventId == "quit")
     {
         setVisible(false);
         current_npc = 0;
@@ -254,7 +229,7 @@ void BuyDialog::action(const std::string& eventId, gcn::Widget* widget)
         mQuantityLabel->adjustSize();
 
         int price = mAmountItems * mShopItems->at(selectedItem).price;
-        mMoneyLabel->setCaption("Price : " + toString(price)  + " GP / "
+        mMoneyLabel->setCaption("Price: " + toString(price)  + " GP / "
                                 + toString(mMoney) + " GP" );
         mMoneyLabel->adjustSize();
     }
@@ -262,19 +237,39 @@ void BuyDialog::action(const std::string& eventId, gcn::Widget* widget)
 
 void BuyDialog::selectionChanged(const SelectionEvent &event)
 {
+    // Reset amount of items and update labels
+    mAmountItems = 0;
+    mSlider->setValue(0);
+    mQuantityLabel->setCaption("0");
+    mQuantityLabel->adjustSize();
+    mMoneyLabel->setCaption("Price: 0 GP / " + toString(mMoney) + " GP");
+    mMoneyLabel->adjustSize();
+
+    // Disable buttons for buying and decreasing
+    mBuyButton->setEnabled(false);
+    mDecreaseButton->setEnabled(false);
+
     int selectedItem = mShopItemList->getSelected();
 
     if (selectedItem > -1)
     {
-        const ItemInfo &info =
-            ItemDB::get(mShopItems->at(selectedItem).id);
+        const ItemInfo &info = ItemDB::get(mShopItems->at(selectedItem).id);
 
         mItemDescLabel->setCaption("Description: " + info.getDescription());
         mItemEffectLabel->setCaption("Effect: " + info.getEffect());
+
+        // Calculate how many the player can afford
+        mMaxItems = mMoney / mShopItems->at(selectedItem).price;
     }
     else
     {
         mItemDescLabel->setCaption("Description:");
         mItemEffectLabel->setCaption("Effect:");
+        mMaxItems = 0;
     }
+
+    // When at least one item can be bought, enable the slider and the
+    // increase button
+    mIncreaseButton->setEnabled(mMaxItems > 0);
+    mSlider->setEnabled(mMaxItems > 0);
 }
diff --git a/src/gui/listbox.cpp b/src/gui/listbox.cpp
index 14626d06..d4a2c6cb 100644
--- a/src/gui/listbox.cpp
+++ b/src/gui/listbox.cpp
@@ -38,9 +38,8 @@ ListBox::ListBox(gcn::ListModel *listModel):
 
 void ListBox::draw(gcn::Graphics *graphics)
 {
-    if (mListModel == NULL) {
+    if (!mListModel)
         return;
-    }
 
     graphics->setColor(gcn::Color(110, 160, 255));
     graphics->setFont(getFont());
@@ -54,7 +53,9 @@ void ListBox::draw(gcn::Graphics *graphics)
     }
 
     // Draw the list elements
-    for (int i = 0, y = 0; i < mListModel->getNumberOfElements(); ++i, y += fontHeight)
+    for (int i = 0, y = 0;
+         i < mListModel->getNumberOfElements();
+         ++i, y += fontHeight)
     {
         graphics->drawText(mListModel->getElementAt(i), 1, y);
     }
diff --git a/src/gui/listbox.h b/src/gui/listbox.h
index c1932f54..deca07cf 100644
--- a/src/gui/listbox.h
+++ b/src/gui/listbox.h
@@ -73,9 +73,9 @@ class ListBox : public gcn::ListBox
         /**
          * Sets the index of the selected element.
          */
-        void setSelected(int selected);
+        virtual void setSelected(int selected);
 
-    private:
+    protected:
         /**
          * Sends out selection events to the list of selection listeners.
          */
diff --git a/src/gui/sell.cpp b/src/gui/sell.cpp
index 0137fdde..24556567 100644
--- a/src/gui/sell.cpp
+++ b/src/gui/sell.cpp
@@ -146,7 +146,8 @@ void SellDialog::addItem(Item *item, int price)
 
     ITEM_SHOP item_shop;
 
-    item_shop.name = item->getInfo().getName() + " " + toString(price) + " GP";
+    item_shop.name = item->getInfo().getName()
+        + " (" + toString(price) + " GP)";
     item_shop.price = price;
     item_shop.index = item->getInvIndex();
     item_shop.id = item->getId();
diff --git a/src/gui/shop.cpp b/src/gui/shop.cpp
index 2d33e8a8..3d972bc2 100644
--- a/src/gui/shop.cpp
+++ b/src/gui/shop.cpp
@@ -45,7 +45,7 @@ void ShopItems::addItem(short id, int price)
     ITEM_SHOP item_shop;
 
     item_shop.name = ItemDB::get(id).getName()
-                     + " " + toString(price) + " GP";
+                     + " (" + toString(price) + " GP)";
     item_shop.price = price;
     item_shop.id = id;
     item_shop.image = ItemDB::get(id).getImage();
diff --git a/src/gui/shoplistbox.cpp b/src/gui/shoplistbox.cpp
index 61abff35..f5581323 100644
--- a/src/gui/shoplistbox.cpp
+++ b/src/gui/shoplistbox.cpp
@@ -34,11 +34,10 @@
 
 #include "../graphics.h"
 
-const int ITEM_SPRITE_HEIGHT = 32;
+const int ITEM_ICON_SIZE = 32;
 
 ShopListBox::ShopListBox(gcn::ListModel *listModel):
-    gcn::ListBox(listModel),
-    mMousePressed(false),
+    ListBox(listModel),
     mPlayerMoney(0)
 {
     mRowHeight = getFont()->getHeight();
@@ -46,105 +45,97 @@ ShopListBox::ShopListBox(gcn::ListModel *listModel):
 }
 
 ShopListBox::ShopListBox(gcn::ListModel *listModel, ShopItems *shopListModel):
-    gcn::ListBox(listModel),
-    mMousePressed(false),
+    ListBox(listModel),
     mPlayerMoney(0),
     mShopItems(shopListModel)
 {
-    mRowHeight = (getFont()->getHeight() > ITEM_SPRITE_HEIGHT ?
-        getFont()->getHeight() : ITEM_SPRITE_HEIGHT);
+    mRowHeight = std::max(getFont()->getHeight(), ITEM_ICON_SIZE);
     mPriceCheck = true;
 }
 
-
 void ShopListBox::setPlayersMoney(int money)
 {
     mPlayerMoney = money;
 }
 
-void ShopListBox::draw(gcn::Graphics *graphics)
+void ShopListBox::draw(gcn::Graphics *gcnGraphics)
 {
-    if (mListModel == NULL) {
+    if (!mListModel)
         return;
-    }
+
+    Graphics *graphics = static_cast<Graphics*>(gcnGraphics);
 
     graphics->setFont(getFont());
 
     // Draw the list elements
-    for (int i = 0, y = 0; i < mListModel->getNumberOfElements(); ++i, y += mRowHeight)
+    for (int i = 0, y = 0;
+         i < mListModel->getNumberOfElements();
+         ++i, y += mRowHeight)
     {
-        graphics->setColor(gcn::Color(0xffffff));
-        if (mShopItems != NULL)
+        gcn::Color backgroundColor = gcn::Color(0xffffff);
+
+        if (i == mSelected)
+        {
+            backgroundColor = gcn::Color(110, 160, 255);
+        }
+        else if (mShopItems &&
+                mPlayerMoney < mShopItems->at(i).price && mPriceCheck)
         {
-            if(mPlayerMoney < mShopItems->at(i).price && mPriceCheck)
-            {
-                graphics->setColor(gcn::Color(0x919191));
-            }
+            backgroundColor = gcn::Color(0x919191);
         }
+
+        graphics->setColor(backgroundColor);
         graphics->fillRectangle(gcn::Rectangle(0, y, getWidth(), mRowHeight));
-        if (mShopItems)
-            dynamic_cast<Graphics*>(graphics)->drawImage(mShopItems->at(i).image, 1, y);
-        graphics->drawText(mListModel->getElementAt(i), ITEM_SPRITE_HEIGHT, y);
-    }
 
-    // Draw rectangle below the selected list element and the list element
-    // not shown.
-    if (mSelected >= 0) {
-        graphics->setColor(gcn::Color(110, 160, 255));
-        graphics->fillRectangle(gcn::Rectangle(0, mRowHeight * mSelected,
-                                               getWidth(), mRowHeight));
         if (mShopItems)
-            dynamic_cast<Graphics*>(graphics)->drawImage(
-            mShopItems->at(mSelected).image, 1, mRowHeight * mSelected);
-        graphics->drawText(mListModel->getElementAt(mSelected),
-            ITEM_SPRITE_HEIGHT, mRowHeight * mSelected);
+        {
+            graphics->drawImage(mShopItems->at(i).image, 1, y);
+        }
+        graphics->drawText(mListModel->getElementAt(i), ITEM_ICON_SIZE + 5,
+                y + (ITEM_ICON_SIZE - getFont()->getHeight()) / 2);
     }
 }
 
 void ShopListBox::setSelected(int selected)
 {
-    gcn::ListBox::setSelected(selected);
-    if (mListModel != NULL)
+    if (!mListModel)
     {
-        gcn::BasicContainer *par = getParent();
-        if (par == NULL)
-        {
-            return;
-        }
-
-        gcn::Rectangle scroll;
+        mSelected = -1;
+    }
+    else
+    {
+        // Update mSelected with bounds checking
+        mSelected = std::min(mListModel->getNumberOfElements() - 1,
+                             std::max(-1, selected));
 
-        if (mSelected < 0)
+        gcn::BasicContainer *parent = getParent();
+        if (parent)
         {
-            scroll.y = 0;
+            gcn::Rectangle scroll;
+            scroll.y = (mSelected < 0) ? 0 : mRowHeight * mSelected;
+            scroll.height = mRowHeight;
+            parent->showWidgetPart(this, scroll);
         }
-        else
-        {
-            scroll.y = mRowHeight * mSelected;
-        }
-
-        scroll.height = mRowHeight;
-        par->showWidgetPart(this, scroll);
     }
+
     fireSelectionChangedEvent();
 }
 
 void ShopListBox::mousePress(int x, int y, int button)
 {
-
-    bool enoughMoney = false;
     if (button == gcn::MouseInput::LEFT && hasMouse())
     {
-        if (mShopItems)
+        bool enoughMoney = false;
+
+        if (mShopItems && mPriceCheck)
         {
-            if(mPlayerMoney >= mShopItems->at(y / mRowHeight).price)
+            if (mPlayerMoney >= mShopItems->at(y / mRowHeight).price)
                 enoughMoney = true;
         }
         else // Old Behaviour
+        {
             enoughMoney = true;
-
-    if (!mPriceCheck)
-        enoughMoney = true;
+        }
 
         if (enoughMoney)
         {
@@ -155,40 +146,9 @@ void ShopListBox::mousePress(int x, int y, int button)
     }
 }
 
-void ShopListBox::mouseRelease(int x, int y, int button)
-{
-    gcn::ListBox::mouseRelease(x, y, button);
-
-    mMousePressed = false;
-}
-
-void ShopListBox::mouseMotion(int x, int y)
-{
-    gcn::ListBox::mouseMotion(x, y);
-
-    // Pretend mouse is pressed continuously while dragged. Causes list
-    // selection to be updated as is default in many GUIs.
-    if (mMousePressed)
-    {
-        mousePress(x, y, gcn::MouseInput::LEFT);
-    }
-}
-
-void ShopListBox::fireSelectionChangedEvent()
-{
-    SelectionEvent event(this);
-    SelectionListeners::iterator i_end = mListeners.end();
-    SelectionListeners::iterator i;
-
-    for (i = mListeners.begin(); i != i_end; ++i)
-    {
-        (*i)->selectionChanged(event);
-    }
-}
-
 void ShopListBox::adjustSize()
 {
-    if (mListModel != NULL)
+    if (mListModel)
     {
         setHeight(mRowHeight * mListModel->getNumberOfElements());
     }
diff --git a/src/gui/shoplistbox.h b/src/gui/shoplistbox.h
index 2dff8977..476564b2 100644
--- a/src/gui/shoplistbox.h
+++ b/src/gui/shoplistbox.h
@@ -21,10 +21,10 @@
  *  $Id: listbox.h 2655 2006-09-03 21:25:02Z b_lindeijer $
  */
 
-#ifndef _TMW_LISTBOX_H
-#define _TMW_LISTBOX_H
+#ifndef _TMW_SHOPLISTBOX_H
+#define _TMW_SHOPLISTBOX_H
 
-#include <guichan/widgets/listbox.hpp>
+#include "listbox.h"
 #include "shop.h"
 
 class SelectionListener;
@@ -36,7 +36,7 @@ class SelectionListener;
  *
  * \ingroup GUI
  */
-class ShopListBox : public gcn::ListBox
+class ShopListBox : public ListBox
 {
     public:
         /**
@@ -55,8 +55,6 @@ class ShopListBox : public gcn::ListBox
         void draw(gcn::Graphics *graphics);
 
         void mousePress(int x, int y, int button);
-        void mouseRelease(int x, int y, int button);
-        void mouseMotion(int x, int y);
 
         /**
          * Adds a listener to the list that's notified each time a change to
@@ -98,15 +96,6 @@ class ShopListBox : public gcn::ListBox
         void setPriceCheck(bool check);
 
     private:
-        /**
-         * Sends out selection events to the list of selection listeners.
-         */
-        void fireSelectionChangedEvent();
-
-        bool mMousePressed;    /**< Keeps track of mouse pressed status. */
-
-        std::list<SelectionListener*> mListeners;
-
         int mPlayerMoney;
 
         /**
@@ -118,7 +107,6 @@ class ShopListBox : public gcn::ListBox
         int mRowHeight; /**< Row Height */
 
         bool mPriceCheck;
-
 };
 
 #endif