The block bag fetch/place mapping is now taken from BlockType.getBlockBagItem.

src/main/java/com/sk89q/worldedit/EditSession.java

@@ -198,7 +198,7 @@ public class EditSession {
         if (blockBag != null) {
             if (type > 0) {
                 try {
-                    blockBag.fetchPlacedBlock(type);
+                    blockBag.fetchPlacedBlock(type, 0);
                 } catch (UnplaceableBlockException e) {
                     return false;
                 } catch (BlockBagException e) {

src/main/java/com/sk89q/worldedit/bags/BlockBag.java

@@ -34,7 +34,7 @@ public abstract class BlockBag {
      * @param id
      * @param data 
      * @throws BlockBagException
-     * @deprecated Use {@link BlockBag#storeDroppedBlock(int, int)}
+     * @deprecated Use {@link BlockBag#storeDroppedBlock(int, int)} instead
      */
     @Deprecated
     public void storeDroppedBlock(int id) throws BlockBagException {
@@ -61,8 +61,20 @@ public abstract class BlockBag {
      *
      * @param id
      * @throws BlockBagException
+     * @deprecated Use {@link #fetchPlacedBlock(int,int)} instead
      */
     public void fetchPlacedBlock(int id) throws BlockBagException {
+        fetchPlacedBlock(id, 0);
+    }
+
+    /**
+     * Sets a block as if it was placed by hand.
+     *
+     * @param id
+     * @param data TODO
+     * @throws BlockBagException
+     */
+    public void fetchPlacedBlock(int id, int data) throws BlockBagException {
         try {
             // Blocks that can't be fetched...
             switch (id) {
@@ -95,41 +107,37 @@ public abstract class BlockBag {
             }
 
         } catch (OutOfBlocksException e) {
-            switch (id) {
-            case BlockID.STONE:
-                fetchBlock(BlockID.COBBLESTONE);
-                break;
+            BaseItem placed = BlockType.getBlockBagItem(id, data);
+            if (placed == null) throw e; // TODO: check
+            if (placed.getType() == BlockID.AIR) throw e; // TODO: check
 
-            case BlockID.GRASS:
-                fetchBlock(BlockID.DIRT);
-                break;
-
-            case BlockID.REDSTONE_WIRE:
-                fetchBlock(ItemID.REDSTONE_DUST);
-                break;
-
-            case BlockID.REDSTONE_TORCH_OFF:
-                fetchBlock(BlockID.REDSTONE_TORCH_ON);
-                break;
-
-            case BlockID.WALL_SIGN:
-            case BlockID.SIGN_POST:
-                fetchBlock(ItemID.SIGN);
-                break;
-
-            default:
-                throw e;
-            }
+            fetchItem(placed);
         }
     }
 
     /**
      * Get a block.
      *
+     * Either this method or fetchItem needs to be overridden
+     *
      * @param id
      * @throws BlockBagException 
      */
-    public abstract void fetchBlock(int id) throws BlockBagException;
+    public void fetchBlock(int id) throws BlockBagException {
+        fetchItem(new BaseItem(id));
+    }
+
+    /**
+     * Get a block.
+     *
+     * Either this method or fetchBlock needs to be overridden
+     *
+     * @param item
+     * @throws BlockBagException 
+     */
+    public void fetchItem(BaseItem item) throws BlockBagException {
+        fetchBlock(item.getType());
+    }
 
     /**
      * Store a block.

src/main/java/com/sk89q/worldedit/bukkit/BukkitPlayerBlockBag.java

@@ -71,7 +71,13 @@ public class BukkitPlayerBlockBag extends BlockBag {
      * @param id
      */
     @Override
-    public void fetchBlock(int id) throws BlockBagException {
+    public void fetchItem(BaseItem item) throws BlockBagException {
+        final int id = item.getType();
+        final int damage = item.getDamage();
+        int amount = (item instanceof BaseItemStack) ? ((BaseItemStack) item).getAmount() : 1;
+        assert(amount == 1);
+        boolean usesDamageValue = ItemType.usesDamageValue(id);
+
         if (id == BlockID.AIR) {
             throw new IllegalArgumentException("Can't fetch air block");
         }
@@ -81,32 +87,40 @@ public class BukkitPlayerBlockBag extends BlockBag {
         boolean found = false;
 
         for (int slot = 0; slot < items.length; ++slot) {
-            ItemStack item = items[slot];
+            ItemStack bukkitItem = items[slot];
 
-            if (item == null) continue;
-            
-            if (item.getTypeId() == id) {
-                int amount = item.getAmount();
-                
-                // Unlimited
-                if (amount < 0) {
-                    return;
-                }
-                
-                if (amount > 1) {
-                    item.setAmount(amount - 1);
-                    found = true;
-                } else {
-                    items[slot] = null; 
-                    found = true;
-                }
-                
-                break;
+            if (bukkitItem == null) {
+                continue;
             }
+
+            if (bukkitItem.getTypeId() != id) {
+                // Type id doesn't fit
+                continue;
+            }
+
+            if (usesDamageValue && bukkitItem.getDurability() != damage) {
+                // Damage value doesn't fit.
+                continue;
+            }
+
+            int currentAmount = bukkitItem.getAmount();
+            if (currentAmount < 0) {
+                // Unlimited
+                return;
+            }
+
+            if (currentAmount > 1) {
+                bukkitItem.setAmount(currentAmount - 1);
+                found = true;
+            } else {
+                items[slot] = null; 
+                found = true;
+            }
+
+            break;
         }
 
-        if (found) {
-        } else {
+        if (!found) {
             throw new OutOfBlocksException();
         }
     }