Added Button MaterialData

src/main/java/org/bukkit/Material.java

@@ -79,7 +79,7 @@ public enum Material {
     GLOWING_REDSTONE_ORE(74),
     REDSTONE_TORCH_OFF(75, RedstoneTorch.class),
     REDSTONE_TORCH_ON(76, RedstoneTorch.class),
-    STONE_BUTTON(77),
+    STONE_BUTTON(77, Button.class),
     SNOW(78),
     ICE(79),
     SNOW_BLOCK(80),

src/main/java/org/bukkit/material/Button.java

@@ -0,0 +1,58 @@
+
+package org.bukkit.material;
+
+import org.bukkit.BlockFace;
+import org.bukkit.Material;
+
+/**
+ * Represents a button
+ */
+public class Button extends MaterialData implements Redstone, Attachable {
+    public Button(final int type) {
+        super(type);
+    }
+
+    public Button(final Material type) {
+        super(type);
+    }
+
+    public Button(final int type, final byte data) {
+        super(type, data);
+    }
+
+    public Button(final Material type, final byte data) {
+        super(type, data);
+    }
+
+    /**
+     * Gets the current state of this Material, indicating if it's powered or
+     * unpowered
+     *
+     * @return true if powered, otherwise false
+     */
+    public boolean isPowered() {
+        return (getData() & 0x8) == 0x8;
+    }
+
+    /**
+     * Gets the face that this block is attached on
+     *
+     * @return BlockFace attached to
+     */
+    public BlockFace getAttachedFace() {
+        byte data = (byte) (getData() ^ 0x8);
+
+        switch (data) {
+            case 0x1:
+                return BlockFace.NORTH;
+            case 0x2:
+                return BlockFace.SOUTH;
+            case 0x3:
+                return BlockFace.EAST;
+            case 0x4:
+                return BlockFace.WEST;
+        }
+
+        return null;
+    }
+}