public static Transaction createSignedTransaction(TradeSession ts, MbwManager mbwManager) {
Preconditions.checkNotNull(ts.buyerAddress);
// Create default wallet
Wallet wallet = mbwManager.getRecordManager().getWallet(mbwManager.getWalletMode());
// Get spendable outputs
SpendableOutputs spendable =
wallet.getLocalSpendableOutputs(mbwManager.getBlockChainAddressTracker());
// Extract private key ring
PrivateKeyRing keyRing = wallet.getPrivateKeyRing();
// Create unsigned transaction
UnsignedTransaction unsigned =
createUnsignedTransaction(
ts.satoshisFromSeller,
ts.satoshisForBuyer,
ts.buyerAddress,
ts.feeAddress,
mbwManager,
spendable,
keyRing,
mbwManager.getNetwork());
if (unsigned == null) {
return null;
}
// Make signatures
List<byte[]> signatures =
StandardTransactionBuilder.generateSignatures(
unsigned.getSignatureInfo(), keyRing, mbwManager.getRecordManager().getRandomSource());
// Sign transaction
Transaction tx = StandardTransactionBuilder.finalizeTransaction(unsigned, signatures);
return tx;
}
public static boolean canAffordTrade(TradeSession ts, MbwManager mbwManager) {
// Create default wallet
Wallet wallet = mbwManager.getRecordManager().getWallet(mbwManager.getWalletMode());
// Get spendable outputs
SpendableOutputs spendable =
wallet.getLocalSpendableOutputs(mbwManager.getBlockChainAddressTracker());
// Extract private key ring
PrivateKeyRing keyRing = wallet.getPrivateKeyRing();
Address nullAddress = Address.getNullAddress(mbwManager.getNetwork());
return createUnsignedTransaction(
ts.satoshisFromSeller,
ts.satoshisForBuyer,
nullAddress,
nullAddress,
mbwManager,
spendable,
keyRing,
mbwManager.getNetwork())
!= null;
}