Wallet: Split CoinSelector out into a top level interface in the wallet package.

core/src/main/java/com/google/bitcoin/core/TransactionConfidence.java

@@ -423,7 +423,7 @@ public class TransactionConfidence implements Serializable {
     /**
      * The source of a transaction tries to identify where it came from originally. For instance, did we download it
      * from the peer to peer network, or make it ourselves, or receive it via Bluetooth, or import it from another app,
-     * and so on. This information is useful for {@link Wallet.CoinSelector} implementations to risk analyze
+     * and so on. This information is useful for {@link com.google.bitcoin.wallet.CoinSelector} implementations to risk analyze
      * transactions and decide when to spend them.
      */
     public synchronized Source getSource() {
@@ -433,7 +433,7 @@ public class TransactionConfidence implements Serializable {
     /**
      * The source of a transaction tries to identify where it came from originally. For instance, did we download it
      * from the peer to peer network, or make it ourselves, or receive it via Bluetooth, or import it from another app,
-     * and so on. This information is useful for {@link Wallet.CoinSelector} implementations to risk analyze
+     * and so on. This information is useful for {@link com.google.bitcoin.wallet.CoinSelector} implementations to risk analyze
      * transactions and decide when to spend them.
      */
     public synchronized void setSource(Source source) {

core/src/main/java/com/google/bitcoin/core/Wallet.java

@@ -25,6 +25,7 @@ import com.google.bitcoin.store.UnreadableWalletException;
 import com.google.bitcoin.store.WalletProtobufSerializer;
 import com.google.bitcoin.utils.ListenerRegistration;
 import com.google.bitcoin.utils.Threading;
+import com.google.bitcoin.wallet.CoinSelector;
 import com.google.bitcoin.wallet.KeyTimeCoinSelector;
 import com.google.bitcoin.wallet.WalletFiles;
 import com.google.common.base.Preconditions;
@@ -164,16 +165,6 @@ public class Wallet implements Serializable, BlockChainListener, PeerFilterProvi
         }
     }
 
-    /**
-     * A CoinSelector is responsible for picking some outputs to spend, from the list of all spendable outputs. It
-     * allows you to customize the policies for creation of transactions to suit your needs. The select operation
-     * may return a {@link CoinSelection} that has a valueGathered lower than the requested target, if there's not
-     * enough money in the wallet.
-     */
-    public interface CoinSelector {
-        public CoinSelection select(BigInteger target, LinkedList<TransactionOutput> candidates);
-    }
-
     /**
      * This class implements a {@link CoinSelector} which attempts to get the highest priority possible. This means that
      * the transaction is the most likely to get confirmed
@@ -1636,7 +1627,7 @@ public class Wallet implements Serializable, BlockChainListener, PeerFilterProvi
         public KeyParameter aesKey = null;
 
         /**
-         * If not null, the {@link Wallet.CoinSelector} to use instead of the wallets default. Coin selectors are
+         * If not null, the {@link com.google.bitcoin.wallet.CoinSelector} to use instead of the wallets default. Coin selectors are
          * responsible for choosing which transaction outputs (coins) in a wallet to use given the desired send value
          * amount.
          */

core/src/main/java/com/google/bitcoin/wallet/CoinSelector.java

@@ -0,0 +1,17 @@
+package com.google.bitcoin.wallet;
+
+import com.google.bitcoin.core.TransactionOutput;
+import com.google.bitcoin.core.Wallet;
+
+import java.math.BigInteger;
+import java.util.LinkedList;
+
+/**
+ * A CoinSelector is responsible for picking some outputs to spend, from the list of all spendable outputs. It
+ * allows you to customize the policies for creation of transactions to suit your needs. The select operation
+ * may return a {@link com.google.bitcoin.core.Wallet.CoinSelection} that has a valueGathered lower than the requested target, if there's not
+ * enough money in the wallet.
+ */
+public interface CoinSelector {
+    public Wallet.CoinSelection select(BigInteger target, LinkedList<TransactionOutput> candidates);
+}

core/src/main/java/com/google/bitcoin/wallet/KeyTimeCoinSelector.java

@@ -29,7 +29,7 @@ import java.util.LinkedList;
  * A coin selector that takes all coins assigned to keys created before the given timestamp.
  * Used as part of the implementation of {@link Wallet#setKeyRotationTime(java.util.Date)}.
  */
-public class KeyTimeCoinSelector implements Wallet.CoinSelector {
+public class KeyTimeCoinSelector implements CoinSelector {
     private static final Logger log = LoggerFactory.getLogger(KeyTimeCoinSelector.class);
 
     /** A number of inputs chosen to avoid hitting {@link com.google.bitcoin.core.Transaction.MAX_STANDARD_TX_SIZE} */