Show warning when using prerelease version

Implements #1948

- Add macro `CLIENT_VERSION_IS_RELEASE` to clientversion.h
- When running a prerelease (the above macro is `false`):
  - In UI, show an orange warning bar at the top. This will be used for other
    warnings (and alerts) as well, instead of the status bar.
  - For `bitcoind`, show the warning in the "errors" field in `getinfo`
    response.

doc/release-process.txt

@@ -2,7 +2,7 @@
 
 * update (commit) version in sources
   bitcoin-qt.pro
-  src/clientversion.h
+  src/clientversion.h (change CLIENT_VERSION_IS_RELEASE to true)
   share/setup.nsi
   doc/README*
 

src/clientversion.h

@@ -11,6 +11,9 @@
 #define CLIENT_VERSION_REVISION    99
 #define CLIENT_VERSION_BUILD       0
 
+// Set to true for release, false for prerelease or test build
+#define CLIENT_VERSION_IS_RELEASE  false
+
 // Converts the parameter X to a string after macro replacement on X has been performed.
 // Don't merge these into one macro!
 #define STRINGIZE(X) DO_STRINGIZE(X)

src/main.cpp

@@ -2617,9 +2617,13 @@ string GetWarnings(string strFor)
     int nPriority = 0;
     string strStatusBar;
     string strRPC;
+
     if (GetBoolArg("-testsafemode"))
         strRPC = "test";
 
+    if (!CLIENT_VERSION_IS_RELEASE)
+        strStatusBar = _("This is a pre-release test build - use at your own risk - do not use for mining or merchant applications");
+
     // Misc warnings like out of disk space and clock is wrong
     if (strMiscWarning != "")
     {

src/qt/bitcoingui.cpp

@@ -356,6 +356,7 @@ void BitcoinGUI::setClientModel(ClientModel *clientModel)
         // Report errors from network/worker thread
         connect(clientModel, SIGNAL(error(QString,QString,bool)), this, SLOT(error(QString,QString,bool)));
 
+        overviewPage->setClientModel(clientModel);
         rpcConsole->setClientModel(clientModel);
         addressBookPage->setOptionsModel(clientModel->getOptionsModel());
         receiveCoinsPage->setOptionsModel(clientModel->getOptionsModel());
@@ -372,8 +373,7 @@ void BitcoinGUI::setWalletModel(WalletModel *walletModel)
 
         // Put transaction list in tabs
         transactionView->setModel(walletModel);
-
-        overviewPage->setModel(walletModel);
+        overviewPage->setWalletModel(walletModel);
         addressBookPage->setModel(walletModel->getAddressTableModel());
         receiveCoinsPage->setModel(walletModel->getAddressTableModel());
         sendCoinsPage->setModel(walletModel);
@@ -481,7 +481,6 @@ void BitcoinGUI::setNumBlocks(int count, int nTotalBlocks)
         return;
     }
 
-    QString strStatusBarWarnings = clientModel->getStatusBarWarnings();
     QString tooltip;
 
     if(count < nTotalBlocks)
@@ -489,35 +488,23 @@ void BitcoinGUI::setNumBlocks(int count, int nTotalBlocks)
         int nRemainingBlocks = nTotalBlocks - count;
         float nPercentageDone = count / (nTotalBlocks * 0.01f);
 
-        if (strStatusBarWarnings.isEmpty())
-        {
         progressBarLabel->setText(tr(clientModel->isImporting() ? "Importing blocks..." : "Synchronizing with network..."));
         progressBarLabel->setVisible(true);
         progressBar->setFormat(tr("~%n block(s) remaining", "", nRemainingBlocks));
         progressBar->setMaximum(nTotalBlocks);
         progressBar->setValue(count);
         progressBar->setVisible(true);
-        }
 
         tooltip = tr("Downloaded %1 of %2 blocks of transaction history (%3% done).").arg(count).arg(nTotalBlocks).arg(nPercentageDone, 0, 'f', 2);
     }
     else
     {
-        if (strStatusBarWarnings.isEmpty())
         progressBarLabel->setVisible(false);
 
         progressBar->setVisible(false);
         tooltip = tr("Downloaded %1 blocks of transaction history.").arg(count);
     }
 
-    // Override progressBarLabel text and hide progress bar, when we have warnings to display
-    if (!strStatusBarWarnings.isEmpty())
-    {
-        progressBarLabel->setText(strStatusBarWarnings);
-        progressBarLabel->setVisible(true);
-        progressBar->setVisible(false);
-    }
-
     QDateTime lastBlockDate = clientModel->getLastBlockDate();
     int secs = lastBlockDate.secsTo(QDateTime::currentDateTime());
     QString text;

src/qt/clientmodel.cpp

@@ -88,9 +88,7 @@ void ClientModel::updateAlert(const QString &hash, int status)
         }
     }
 
-    // Emit a numBlocksChanged when the status message changes,
-    // so that the view recomputes and updates the status bar.
-    emit numBlocksChanged(getNumBlocks(), getNumBlocksOfPeers());
+    emit alertsChanged(getStatusBarWarnings());
 }
 
 bool ClientModel::isTestNet() const
@@ -133,6 +131,11 @@ QString ClientModel::formatBuildDate() const
     return QString::fromStdString(CLIENT_DATE);
 }
 
+bool ClientModel::isReleaseVersion() const
+{
+    return CLIENT_VERSION_IS_RELEASE;
+}
+
 QString ClientModel::clientName() const
 {
     return QString::fromStdString(CLIENT_NAME);

src/qt/clientmodel.h

@@ -42,6 +42,7 @@ public:
 
     QString formatFullVersion() const;
     QString formatBuildDate() const;
+    bool isReleaseVersion() const;
     QString clientName() const;
     QString formatClientStartupTime() const;
 
@@ -60,6 +61,7 @@ private:
 signals:
     void numConnectionsChanged(int count);
     void numBlocksChanged(int count, int countOfPeers);
+    void alertsChanged(const QString &warnings);
 
     //! Asynchronous error notification
     void error(const QString &title, const QString &message, bool modal);

src/qt/forms/overviewpage.ui

@@ -13,6 +13,25 @@
   <property name="windowTitle">
    <string>Form</string>
   </property>
+  <layout class="QVBoxLayout" name="topLayout">
+   <item>
+    <widget class="QLabel" name="labelAlerts">
+     <property name="visible">
+      <bool>false</bool>
+     </property>
+     <property name="styleSheet">
+      <string notr="true">background-color: qlineargradient(x1: 0, y1: 0, x2: 1, y2: 0, stop:0 #F0D0A0, stop:1 #F8D488);  color:#000000
+</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+     <property name="margin">
+      <number>3</number>
+     </property>
+    </widget>
+   </item>
+   <item>
     <layout class="QHBoxLayout" name="horizontalLayout" stretch="1,1">
      <item>
       <layout class="QVBoxLayout" name="verticalLayout_2">
@@ -293,6 +312,8 @@
       </layout>
      </item>
     </layout>
+   </item>
+  </layout>
  </widget>
  <resources/>
  <connections/>

src/qt/overviewpage.cpp

@@ -1,6 +1,7 @@
 #include "overviewpage.h"
 #include "ui_overviewpage.h"
 
+#include "clientmodel.h"
 #include "walletmodel.h"
 #include "bitcoinunits.h"
 #include "optionsmodel.h"
@@ -92,6 +93,8 @@ public:
 OverviewPage::OverviewPage(QWidget *parent) :
     QWidget(parent),
     ui(new Ui::OverviewPage),
+    clientModel(0),
+    walletModel(0),
     currentBalance(-1),
     currentUnconfirmedBalance(-1),
     currentImmatureBalance(-1),
@@ -129,7 +132,7 @@ OverviewPage::~OverviewPage()
 
 void OverviewPage::setBalance(qint64 balance, qint64 unconfirmedBalance, qint64 immatureBalance)
 {
-    int unit = model->getOptionsModel()->getDisplayUnit();
+    int unit = walletModel->getOptionsModel()->getDisplayUnit();
     currentBalance = balance;
     currentUnconfirmedBalance = unconfirmedBalance;
     currentImmatureBalance = immatureBalance;
@@ -149,9 +152,20 @@ void OverviewPage::setNumTransactions(int count)
     ui->labelNumTransactions->setText(QLocale::system().toString(count));
 }
 
-void OverviewPage::setModel(WalletModel *model)
+void OverviewPage::setClientModel(ClientModel *model)
 {
-    this->model = model;
+    this->clientModel = model;
+    if(model)
+    {
+        // Show warning if this is a prerelease version
+        connect(model, SIGNAL(alertsChanged(QString)), this, SLOT(updateAlerts(QString)));
+        updateAlerts(model->getStatusBarWarnings());
+    }
+}
+
+void OverviewPage::setWalletModel(WalletModel *model)
+{
+    this->walletModel = model;
     if(model && model->getOptionsModel())
     {
         // Set up transaction list
@@ -181,18 +195,24 @@ void OverviewPage::setModel(WalletModel *model)
 
 void OverviewPage::updateDisplayUnit()
 {
-    if(model && model->getOptionsModel())
+    if(walletModel && walletModel->getOptionsModel())
     {
         if(currentBalance != -1)
             setBalance(currentBalance, currentUnconfirmedBalance, currentImmatureBalance);
 
         // Update txdelegate->unit with the current unit
-        txdelegate->unit = model->getOptionsModel()->getDisplayUnit();
+        txdelegate->unit = walletModel->getOptionsModel()->getDisplayUnit();
 
         ui->listTransactions->update();
     }
 }
 
+void OverviewPage::updateAlerts(const QString &warnings)
+{
+    this->ui->labelAlerts->setVisible(!warnings.isEmpty());
+    this->ui->labelAlerts->setText(warnings);
+}
+
 void OverviewPage::showOutOfSyncWarning(bool fShow)
 {
     ui->labelWalletStatus->setVisible(fShow);

src/qt/overviewpage.h

@@ -10,6 +10,7 @@ QT_END_NAMESPACE
 namespace Ui {
     class OverviewPage;
 }
+class ClientModel;
 class WalletModel;
 class TxViewDelegate;
 class TransactionFilterProxy;
@@ -23,7 +24,8 @@ public:
     explicit OverviewPage(QWidget *parent = 0);
     ~OverviewPage();
 
-    void setModel(WalletModel *model);
+    void setClientModel(ClientModel *clientModel);
+    void setWalletModel(WalletModel *walletModel);
     void showOutOfSyncWarning(bool fShow);
 
 public slots:
@@ -35,7 +37,8 @@ signals:
 
 private:
     Ui::OverviewPage *ui;
-    WalletModel *model;
+    ClientModel *clientModel;
+    WalletModel *walletModel;
     qint64 currentBalance;
     qint64 currentUnconfirmedBalance;
     qint64 currentImmatureBalance;
@@ -46,6 +49,7 @@ private:
 private slots:
     void updateDisplayUnit();
     void handleTransactionClicked(const QModelIndex &index);
+    void updateAlerts(const QString &warnings);
 };
 
 #endif // OVERVIEWPAGE_H