Added multi-currency support.

src/main/java/net/milkbowl/vault/economy/AbstractEconomyMultiCurrency.java

@@ -0,0 +1,5 @@
+package net.milkbowl.vault.economy;
+
+public abstract class AbstractEconomyMultiCurrency extends AbstractEconomy implements EconomyMultiCurrency {
+
+}

src/main/java/net/milkbowl/vault/economy/EconomyMultiCurrency.java

@@ -0,0 +1,179 @@
+package net.milkbowl.vault.economy;
+
+import org.bukkit.OfflinePlayer;
+
+import java.util.List;
+
+public interface EconomyMultiCurrency extends Economy{
+
+
+    /**
+     * Returns a list of all available currencies in the economy plugin.
+     * Can be empty.
+     * @return List of currency names
+     */
+    public List<String> getCurrencies();
+
+    /**
+     * Some economy plugins round off after a certain number of digits.
+     * This function returns the number of digits the plugin keeps
+     * or -1 if no rounding occurs.
+     *
+     * @param currencyName The currency to check the fractional digits for
+     * @return number of digits after the decimal point kept
+     */
+    public int fractionalDigits(String currencyName);
+
+    /**
+     * Format amount into a human readable String This provides translation into
+     * economy specific formatting to improve consistency between plugins.
+     *
+     * @param amount to format
+     * @param currencyName The currency to format the amount in
+     * @return Human readable string describing amount
+     */
+    public String format(double amount, String currencyName);
+
+    /**
+     * Returns the name of the currency in plural form.
+     * If the economy being used does not support currency names then an empty string will be returned.
+     *
+     * @param currencyName The currency to get the name of
+     * @return name of the currency (plural)
+     */
+    public String currencyNamePlural(String currencyName);
+
+    /**
+     * Returns the name of the currency in singular form.
+     * If the economy being used does not support currency names then an empty string will be returned.
+     *
+     * @param currencyName The currency to get the name of
+     * @return name of the currency (singular)
+     */
+    public String currencyNameSingular(String currencyName);
+
+    /**
+     * Gets balance of a player
+     *
+     * @param player of the player
+     * @param currencyName The currency to get the balance in
+     * @return Amount currently held in players account
+     */
+    public double getBalance(OfflinePlayer player , String currencyName);
+
+    /**
+     * Gets balance of a player on the specified world.
+     * IMPLEMENTATION SPECIFIC - if an economy plugin does not support this the global balance will be returned.
+     * @param player to check
+     * @param currencyName The currency to get the balance in
+     * @param world name of the world
+     * @return Amount currently held in players account
+     */
+    public double getBalance(OfflinePlayer player, String world, String currencyName);
+
+
+    /**
+     * Checks if the player account has the amount - DO NOT USE NEGATIVE AMOUNTS
+     *
+     * @param player to check
+     * @param currencyName The currency to check the amount in
+     * @param amount to check for
+     * @return True if <b>player</b> has <b>amount</b>, False else wise
+     */
+    public boolean has(OfflinePlayer player, double amount,String currencyName);
+
+    /**
+     * Checks if the player account has the amount in a given world - DO NOT USE NEGATIVE AMOUNTS
+     * IMPLEMENTATION SPECIFIC - if an economy plugin does not support this the global balance will be returned.
+     *
+     * @param player to check
+     * @param worldName to check with
+     * @param amount to check for
+     * @param currencyName The currency to check the amount in
+     * @return True if <b>player</b> has <b>amount</b>, False else wise
+     */
+    public boolean has(OfflinePlayer player, String worldName, double amount, String currencyName);
+
+    /**
+     * Withdraw an amount from a player - DO NOT USE NEGATIVE AMOUNTS
+     *
+     * @param player to withdraw from
+     * @param amount Amount to withdraw
+     * @param currencyName The currency to withdraw the amount in
+     * @return Detailed response of transaction
+     */
+    public EconomyResponse withdrawPlayer(OfflinePlayer player, double amount, String currencyName);
+
+
+    /**
+     * Withdraw an amount from a player on a given world - DO NOT USE NEGATIVE AMOUNTS
+     * IMPLEMENTATION SPECIFIC - if an economy plugin does not support this the global balance will be returned.
+     * @param player to withdraw from
+     * @param worldName - name of the world
+     * @param amount Amount to withdraw
+     * @param currencyName The currency to withdraw the amount in
+     * @return Detailed response of transaction
+     */
+    public EconomyResponse withdrawPlayer(OfflinePlayer player, String worldName, double amount, String currencyName);
+
+    /**
+     * Deposit an amount to a player - DO NOT USE NEGATIVE AMOUNTS
+     *
+     * @param player to deposit to
+     * @param amount Amount to deposit
+     * @param currencyName The currency to deposit the amount in
+     * @return Detailed response of transaction
+     */
+    public EconomyResponse depositPlayer(OfflinePlayer player, double amount, String currencyName);
+
+    /**
+     * Deposit an amount to a player - DO NOT USE NEGATIVE AMOUNTS
+     * IMPLEMENTATION SPECIFIC - if an economy plugin does not support this the global balance will be returned.
+     *
+     * @param player to deposit to
+     * @param worldName name of the world
+     * @param amount Amount to deposit
+     * @param currencyName The currency to deposit the amount in
+     * @return Detailed response of transaction
+     */
+    public EconomyResponse depositPlayer(OfflinePlayer player, String worldName, double amount, String currencyName);
+
+    /**
+     * Returns the amount the bank has
+     * @param name of the account
+     * @param currencyName The currency to get the balance in
+     * @return EconomyResponse Object
+     */
+    public EconomyResponse bankBalance(String name, String currencyName);
+
+    /**
+     * Returns true or false whether the bank has the amount specified - DO NOT USE NEGATIVE AMOUNTS
+     *
+     * @param name of the account
+     * @param amount to check for
+     * @param currencyName The currency to check the amount in
+     * @return EconomyResponse Object
+     */
+    public EconomyResponse bankHas(String name, double amount, String currencyName);
+
+    /**
+     * Withdraw an amount from a bank account - DO NOT USE NEGATIVE AMOUNTS
+     *
+     * @param name of the account
+     * @param amount to withdraw
+     * @param currencyName The currency to withdraw the amount in
+     * @return EconomyResponse Object
+     */
+    public EconomyResponse bankWithdraw(String name, double amount, String currencyName);
+
+    /**
+     * Deposit an amount into a bank account - DO NOT USE NEGATIVE AMOUNTS
+     *
+     * @param name of the account
+     * @param amount to deposit
+     * @param currencyName The currency to deposit the amount in
+     * @return EconomyResponse Object
+     */
+    public EconomyResponse bankDeposit(String name, double amount, String currencyName);
+
+}