Added interface for pipettes.

common/net/minecraft/src/buildcraft/api/tools/IToolPipette.java

@@ -0,0 +1,35 @@
+package net.minecraft.src.buildcraft.api.tools;
+
+import net.minecraft.src.ItemStack;
+import net.minecraft.src.buildcraft.api.liquids.ILiquidTank;
+import net.minecraft.src.buildcraft.api.liquids.LiquidStack;
+
+public interface IToolPipette {
+	
+	/**
+	 * @param pipette ItemStack of the pipette.
+	 * @return Capacity of the pipette.
+	 */
+	int getCapacity(ItemStack pipette);
+	/**
+	 * @param pipette
+	 * @return true if the pipette can pipette.
+	 */
+	boolean canPipette(ItemStack pipette);
+	/**
+	 * Fills the pipette with the given liquid stack.
+	 * @param pipette
+	 * @param liquid
+	 * @param doFill
+	 * @return Amount of liquid used in filling the pipette.
+	 */
+	int fill(ItemStack pipette, LiquidStack liquid, boolean doFill);
+	/**
+	 * Drains liquid from the pipette
+	 * @param pipette
+	 * @param maxDrain
+	 * @param doDrain
+	 * @return Liquid stack representing the liquid and amount drained from the pipette.
+	 */
+	LiquidStack drain(ItemStack pipette, int maxDrain, boolean doDrain);
+}