Examples with WalletTransaction org.bitcoinj.wallet.WalletTransaction used on opensource projects

Example 1 with WalletTransaction

use of org.bitcoinj.wallet.WalletTransaction in project bitcoin-wallet by bitcoin-wallet.

the class SweepWalletFragment method requestWalletBalance.

private void requestWalletBalance() {
    ProgressDialogFragment.showProgress(fragmentManager, getString(R.string.sweep_wallet_fragment_request_wallet_balance_progress));
    final RequestWalletBalanceTask.ResultCallback callback = new RequestWalletBalanceTask.ResultCallback() {

        @Override
        public void onResult(final Set<UTXO> utxos) {
            ProgressDialogFragment.dismissProgress(fragmentManager);
            // Filter UTXOs we've already spent and sort the rest.
            final Set<Transaction> walletTxns = application.getWallet().getTransactions(false);
            final Set<UTXO> sortedUtxos = new TreeSet<>(UTXO_COMPARATOR);
            for (final UTXO utxo : utxos) if (!utxoSpentBy(walletTxns, utxo))
                sortedUtxos.add(utxo);
            // Fake transaction funding the wallet to sweep.
            final Map<Sha256Hash, Transaction> fakeTxns = new HashMap<>();
            for (final UTXO utxo : sortedUtxos) {
                Transaction fakeTx = fakeTxns.get(utxo.getHash());
                if (fakeTx == null) {
                    fakeTx = new FakeTransaction(Constants.NETWORK_PARAMETERS, utxo.getHash());
                    fakeTx.getConfidence().setConfidenceType(ConfidenceType.BUILDING);
                    fakeTxns.put(fakeTx.getHash(), fakeTx);
                }
                final TransactionOutput fakeOutput = new TransactionOutput(Constants.NETWORK_PARAMETERS, fakeTx, utxo.getValue(), utxo.getScript().getProgram());
                // Fill with output dummies as needed.
                while (fakeTx.getOutputs().size() < utxo.getIndex()) fakeTx.addOutput(new TransactionOutput(Constants.NETWORK_PARAMETERS, fakeTx, Coin.NEGATIVE_SATOSHI, new byte[] {}));
                // Add the actual output we will spend later.
                fakeTx.addOutput(fakeOutput);
            }
            walletToSweep.clearTransactions(0);
            for (final Transaction tx : fakeTxns.values()) walletToSweep.addWalletTransaction(new WalletTransaction(WalletTransaction.Pool.UNSPENT, tx));
            log.info("built wallet to sweep:\n{}", walletToSweep.toString(false, true, false, null));
            updateView();
        }

        private boolean utxoSpentBy(final Set<Transaction> transactions, final UTXO utxo) {
            for (final Transaction tx : transactions) {
                for (final TransactionInput input : tx.getInputs()) {
                    final TransactionOutPoint outpoint = input.getOutpoint();
                    if (outpoint.getHash().equals(utxo.getHash()) && outpoint.getIndex() == utxo.getIndex())
                        return true;
                }
            }
            return false;
        }

        @Override
        public void onFail(final int messageResId, final Object... messageArgs) {
            ProgressDialogFragment.dismissProgress(fragmentManager);
            final DialogBuilder dialog = DialogBuilder.warn(activity, R.string.sweep_wallet_fragment_request_wallet_balance_failed_title);
            dialog.setMessage(getString(messageResId, messageArgs));
            dialog.setPositiveButton(R.string.button_retry, new DialogInterface.OnClickListener() {

                @Override
                public void onClick(final DialogInterface dialog, final int which) {
                    requestWalletBalance();
                }
            });
            dialog.setNegativeButton(R.string.button_dismiss, null);
            dialog.show();
        }
    };
    final Address address = walletToSweep.getImportedKeys().iterator().next().toAddress(Constants.NETWORK_PARAMETERS);
    new RequestWalletBalanceTask(backgroundHandler, callback).requestWalletBalance(activity.getAssets(), address);
}