qt, refactor: Pass WalletModel object to WalletView constructor

An instance of the WalletView class without walletModel data member
being set is invalid. So, it is better to set it in the constructor.

src/qt/bitcoingui.cpp

@@ -676,7 +676,7 @@ void BitcoinGUI::addWallet(WalletModel* walletModel)
 {
     if (!walletFrame) return;
 
-    WalletView* wallet_view = new WalletView(platformStyle, walletFrame);
+    WalletView* wallet_view = new WalletView(walletModel, platformStyle, walletFrame);
     if (!walletFrame->addWallet(walletModel, wallet_view)) return;
 
     rpcConsole->addWallet(walletModel);

src/qt/walletframe.cpp

@@ -71,7 +71,6 @@ bool WalletFrame::addWallet(WalletModel* walletModel, WalletView* walletView)
     if (mapWalletViews.count(walletModel) > 0) return false;
 
     walletView->setClientModel(clientModel);
-    walletView->setWalletModel(walletModel);
     walletView->showOutOfSyncWarning(bOutOfSync);
 
     WalletView* current_wallet_view = currentWalletView();

src/qt/walletview.cpp

@@ -30,19 +30,24 @@
 #include <QPushButton>
 #include <QVBoxLayout>
 
-WalletView::WalletView(const PlatformStyle *_platformStyle, QWidget *parent):
+WalletView::WalletView(WalletModel* wallet_model, const PlatformStyle* _platformStyle, QWidget* parent)
-    QStackedWidget(parent),
+    : QStackedWidget(parent),
-    clientModel(nullptr),
+      clientModel(nullptr),
-    walletModel(nullptr),
+      walletModel(wallet_model),
-    platformStyle(_platformStyle)
+      platformStyle(_platformStyle)
 {
+    assert(walletModel);
+
     // Create tabs
     overviewPage = new OverviewPage(platformStyle);
+    overviewPage->setWalletModel(walletModel);
 
     transactionsPage = new QWidget(this);
     QVBoxLayout *vbox = new QVBoxLayout();
     QHBoxLayout *hbox_buttons = new QHBoxLayout();
     transactionView = new TransactionView(platformStyle, this);
+    transactionView->setModel(walletModel);
+
     vbox->addWidget(transactionView);
     QPushButton *exportButton = new QPushButton(tr("&Export"), this);
     exportButton->setToolTip(tr("Export the data in the current tab to a file"));
@@ -55,10 +60,16 @@ WalletView::WalletView(const PlatformStyle *_platformStyle, QWidget *parent):
     transactionsPage->setLayout(vbox);
 
     receiveCoinsPage = new ReceiveCoinsDialog(platformStyle);
+    receiveCoinsPage->setModel(walletModel);
+
     sendCoinsPage = new SendCoinsDialog(platformStyle);
+    sendCoinsPage->setModel(walletModel);
 
     usedSendingAddressesPage = new AddressBookPage(platformStyle, AddressBookPage::ForEditing, AddressBookPage::SendingTab, this);
+    usedSendingAddressesPage->setModel(walletModel->getAddressTableModel());
+
     usedReceivingAddressesPage = new AddressBookPage(platformStyle, AddressBookPage::ForEditing, AddressBookPage::ReceivingTab, this);
+    usedReceivingAddressesPage->setModel(walletModel->getAddressTableModel());
 
     addWidget(overviewPage);
     addWidget(transactionsPage);
@@ -84,6 +95,21 @@ WalletView::WalletView(const PlatformStyle *_platformStyle, QWidget *parent):
     connect(transactionView, &TransactionView::message, this, &WalletView::message);
 
     connect(this, &WalletView::setPrivacy, overviewPage, &OverviewPage::setPrivacy);
+
+    // Receive and pass through messages from wallet model
+    connect(walletModel, &WalletModel::message, this, &WalletView::message);
+
+    // Handle changes in encryption status
+    connect(walletModel, &WalletModel::encryptionStatusChanged, this, &WalletView::encryptionStatusChanged);
+
+    // Balloon pop-up for new transaction
+    connect(walletModel->getTransactionTableModel(), &TransactionTableModel::rowsInserted, this, &WalletView::processNewTransaction);
+
+    // Ask for passphrase if needed
+    connect(walletModel, &WalletModel::requireUnlock, this, &WalletView::unlockWallet);
+
+    // Show progress dialog
+    connect(walletModel, &WalletModel::showProgress, this, &WalletView::showProgress);
 }
 
 WalletView::~WalletView()
@@ -99,37 +125,6 @@ void WalletView::setClientModel(ClientModel *_clientModel)
     if (walletModel) walletModel->setClientModel(_clientModel);
 }
 
-void WalletView::setWalletModel(WalletModel *_walletModel)
-{
-    this->walletModel = _walletModel;
-
-    // Put transaction list in tabs
-    transactionView->setModel(_walletModel);
-    overviewPage->setWalletModel(_walletModel);
-    receiveCoinsPage->setModel(_walletModel);
-    sendCoinsPage->setModel(_walletModel);
-    usedReceivingAddressesPage->setModel(_walletModel ? _walletModel->getAddressTableModel() : nullptr);
-    usedSendingAddressesPage->setModel(_walletModel ? _walletModel->getAddressTableModel() : nullptr);
-
-    if (_walletModel)
-    {
-        // Receive and pass through messages from wallet model
-        connect(_walletModel, &WalletModel::message, this, &WalletView::message);
-
-        // Handle changes in encryption status
-        connect(_walletModel, &WalletModel::encryptionStatusChanged, this, &WalletView::encryptionStatusChanged);
-
-        // Balloon pop-up for new transaction
-        connect(_walletModel->getTransactionTableModel(), &TransactionTableModel::rowsInserted, this, &WalletView::processNewTransaction);
-
-        // Ask for passphrase if needed
-        connect(_walletModel, &WalletModel::requireUnlock, this, &WalletView::unlockWallet);
-
-        // Show progress dialog
-        connect(_walletModel, &WalletModel::showProgress, this, &WalletView::showProgress);
-    }
-}
-
 void WalletView::processNewTransaction(const QModelIndex& parent, int start, int /*end*/)
 {
     // Prevent balloon-spam when initial block download is in progress

src/qt/walletview.h

@@ -35,7 +35,7 @@ class WalletView : public QStackedWidget
     Q_OBJECT
 
 public:
-    explicit WalletView(const PlatformStyle *platformStyle, QWidget *parent);
+    explicit WalletView(WalletModel* wallet_model, const PlatformStyle* platformStyle, QWidget* parent);
     ~WalletView();
 
     /** Set the client model.
@@ -43,11 +43,6 @@ public:
     */
     void setClientModel(ClientModel *clientModel);
     WalletModel *getWalletModel() { return walletModel; }
-    /** Set the wallet model.
-        The wallet model represents a bitcoin wallet, and offers access to the list of transactions, address book and sending
-        functionality.
-    */
-    void setWalletModel(WalletModel *walletModel);
 
     bool handlePaymentRequest(const SendCoinsRecipient& recipient);
 
@@ -55,7 +50,12 @@ public:
 
 private:
     ClientModel *clientModel;
-    WalletModel *walletModel;
+
+    //!
+    //! The wallet model represents a bitcoin wallet, and offers access to
+    //! the list of transactions, address book and sending functionality.
+    //!
+    WalletModel* const walletModel;
 
     OverviewPage *overviewPage;
     QWidget *transactionsPage;