Wallet encryption part 2: ask passphrase when needed, add menu options

[novacoin.git] / src / qt / walletmodel.h

diff --git a/src/qt/walletmodel.h b/src/qt/walletmodel.h
index af2cac4..b141c07 100644 (file)
--- a/src/qt/walletmodel.h
+++ b/src/qt/walletmodel.h
@@ -2,6 +2,7 @@
 #define WALLETMODEL_H
 
 #include <QObject>
+#include <string>
 
 class OptionsModel;
 class AddressTableModel;
@@ -15,12 +16,12 @@ struct SendCoinsRecipient
     qint64 amount;
 };
 
-// Interface to a Bitcoin wallet
+// Interface to Bitcoin wallet from Qt view code
 class WalletModel : public QObject
 {
     Q_OBJECT
 public:
-    explicit WalletModel(CWallet *wallet, QObject *parent = 0);
+    explicit WalletModel(CWallet *wallet, OptionsModel *optionsModel, QObject *parent = 0);
 
     enum StatusCode
     {
@@ -36,6 +37,13 @@ public:
         MiscError
     };
 
+    enum EncryptionStatus
+    {
+        Unencrypted,  // !wallet->IsCrypted()
+        Locked,       // wallet->IsCrypted() && wallet->IsLocked()
+        Unlocked      // wallet->IsCrypted() && !wallet->IsLocked()
+    };
+
     OptionsModel *getOptionsModel();
     AddressTableModel *getAddressTableModel();
     TransactionTableModel *getTransactionTableModel();
@@ -43,13 +51,12 @@ public:
     qint64 getBalance() const;
     qint64 getUnconfirmedBalance() const;
     int getNumTransactions() const;
+    EncryptionStatus getEncryptionStatus() const;
 
     // Check address for validity
     bool validateAddress(const QString &address);
 
-    // Return status record for SendCoins
-    // fee is used in case status is "AmountWithFeeExceedsBalance"
-    // hex is filled with the transaction hash if status is "OK"
+    // Return status record for SendCoins, contains error id + information
     struct SendCoinsReturn
     {
         SendCoinsReturn(StatusCode status,
@@ -57,12 +64,44 @@ public:
                          QString hex=QString()):
             status(status), fee(fee), hex(hex) {}
         StatusCode status;
-        qint64 fee;
-        QString hex;
+        qint64 fee; // is used in case status is "AmountWithFeeExceedsBalance"
+        QString hex; // is filled with the transaction hash if status is "OK"
     };
 
-    // Send coins to list of recipients
+    // Send coins to a list of recipients
     SendCoinsReturn sendCoins(const QList<SendCoinsRecipient> &recipients);
+
+    // Wallet encryption
+    bool setWalletEncrypted(bool encrypted, const std::string &passphrase);
+    // Passphrase only needed when unlocking
+    bool setWalletLocked(bool locked, const std::string &passPhrase=std::string());
+    bool changePassphrase(const std::string &oldPass, const std::string &newPass);
+
+    // RAI object for unlocking wallet, returned by requestUnlock()
+    class UnlockContext
+    {
+    public:
+        UnlockContext(WalletModel *wallet, bool valid, bool relock);
+        ~UnlockContext();
+
+        bool isValid() const { return valid; }
+
+        UnlockContext(const UnlockContext& obj)
+        { CopyFrom(obj); }
+    private:
+        UnlockContext& operator=(const UnlockContext& rhs)
+        { CopyFrom(rhs); return *this; }
+
+    private:
+        WalletModel *wallet;
+        bool valid;
+        mutable bool relock; // mutable, as it can be set to false by copying
+
+        void CopyFrom(const UnlockContext& rhs);
+    };
+
+    UnlockContext requestUnlock();
+
 private:
     CWallet *wallet;
 
@@ -73,9 +112,16 @@ private:
     AddressTableModel *addressTableModel;
     TransactionTableModel *transactionTableModel;
 
+    qint64 cachedBalance;
+    qint64 cachedUnconfirmedBalance;
+    qint64 cachedNumTransactions;
+    EncryptionStatus cachedEncryptionStatus;
+
 signals:
     void balanceChanged(qint64 balance, qint64 unconfirmedBalance);
     void numTransactionsChanged(int count);
+    void encryptionStatusChanged(int status);
+    void requireUnlock();
 
     // Asynchronous error notification
     void error(const QString &title, const QString &message);