refactor: Implement HelpMessageDialog using Modes enum

Author: BrandonOdiwuor

src/qt/bitcoin.cpp

@@ -593,7 +593,8 @@ int GuiMain(int argc, char* argv[])
     // Show help message immediately after parsing command-line options (for "-lang") and setting locale,
     // but before showing splash screen.
     if (HelpRequested(gArgs) || gArgs.IsArgSet("-version")) {
-        HelpMessageDialog help(nullptr, gArgs.IsArgSet("-version"));
+        bool about = gArgs.IsArgSet("-version");
+        HelpMessageDialog help(nullptr, about ? HelpMessageDialog::AboutMode : HelpMessageDialog::CommandLineOptionsMode);
         help.showOrPrint();
         return EXIT_SUCCESS;
     }

src/qt/bitcoingui.cpp

@@ -103,7 +103,7 @@ BitcoinGUI::BitcoinGUI(interfaces::Node& node, const PlatformStyle *_platformSty
     updateWindowTitle();
 
     rpcConsole = new RPCConsole(node, _platformStyle, nullptr);
-    helpMessageDialog = new HelpMessageDialog(this, false);
+    helpMessageDialog = new HelpMessageDialog(this, HelpMessageDialog::CommandLineOptionsMode);
 #ifdef ENABLE_WALLET
     if(enableWallet)
     {
@@ -911,7 +911,7 @@ void BitcoinGUI::aboutClicked()
     if(!clientModel)
         return;
 
-    auto dlg = new HelpMessageDialog(this, /*about=*/true);
+    auto dlg = new HelpMessageDialog(this, HelpMessageDialog::AboutMode);
     GUIUtil::ShowModalDialogAsynchronously(dlg);
 }
 

src/qt/utilitydialog.cpp

@@ -29,34 +29,39 @@
 #include <QVBoxLayout>
 
 /** "Help message" or "About" dialog box */
-HelpMessageDialog::HelpMessageDialog(QWidget *parent, bool about) :
+HelpMessageDialog::HelpMessageDialog(QWidget *parent, Mode _mode) :
     QDialog(parent, GUIUtil::dialog_flags),
-    ui(new Ui::HelpMessageDialog)
+    ui(new Ui::HelpMessageDialog),
+    mode(_mode)
 {
     ui->setupUi(this);
 
     QString version = QString{PACKAGE_NAME} + " " + tr("version") + " " + QString::fromStdString(FormatFullVersion());
 
-    if (about)
+    switch(mode)
     {
-        setWindowTitle(tr("About %1").arg(PACKAGE_NAME));
-
-        std::string licenseInfo = LicenseInfo();
-        /// HTML-format the license message from the core
-        QString licenseInfoHTML = QString::fromStdString(LicenseInfo());
-        // Make URLs clickable
-        QRegularExpression uri(QStringLiteral("<(.*)>"), QRegularExpression::InvertedGreedinessOption);
-        licenseInfoHTML.replace(uri, QStringLiteral("<a href=\"\\1\">\\1</a>"));
-        // Replace newlines with HTML breaks
-        licenseInfoHTML.replace("\n", "<br>");
-
-        ui->aboutMessage->setTextFormat(Qt::RichText);
-        ui->scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
-        text = version + "\n" + QString::fromStdString(FormatParagraph(licenseInfo));
-        ui->aboutMessage->setText(version + "<br><br>" + licenseInfoHTML);
-        ui->aboutMessage->setWordWrap(true);
-        ui->helpMessage->setVisible(false);
-    } else {
+    case AboutMode:
+        {
+            setWindowTitle(tr("About %1").arg(PACKAGE_NAME));
+
+            std::string licenseInfo = LicenseInfo();
+            /// HTML-format the license message from the core
+            QString licenseInfoHTML = QString::fromStdString(LicenseInfo());
+            // Make URLs clickable
+            QRegularExpression uri(QStringLiteral("<(.*)>"), QRegularExpression::InvertedGreedinessOption);
+            licenseInfoHTML.replace(uri, QStringLiteral("<a href=\"\\1\">\\1</a>"));
+            // Replace newlines with HTML breaks
+            licenseInfoHTML.replace("\n", "<br>");
+
+            ui->aboutMessage->setTextFormat(Qt::RichText);
+            ui->scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+            text = version + "\n" + QString::fromStdString(FormatParagraph(licenseInfo));
+            ui->aboutMessage->setText(version + "<br><br>" + licenseInfoHTML);
+            ui->aboutMessage->setWordWrap(true);
+            ui->helpMessage->setVisible(false);
+            break;
+        }
+    case CommandLineOptionsMode:
         setWindowTitle(tr("Command-line options"));
         QString header = "Usage:  bitcoin-qt [command-line options]                     \n";
         QTextCursor cursor(ui->helpMessage->document());
@@ -103,6 +108,7 @@ HelpMessageDialog::HelpMessageDialog(QWidget *parent, bool about) :
         ui->helpMessage->moveCursor(QTextCursor::Start);
         ui->scrollArea->setVisible(false);
         ui->aboutLogo->setVisible(false);
+        break;
     }
 
     GUIUtil::handleCloseWindowShortcut(this);

src/qt/utilitydialog.h

@@ -22,7 +22,12 @@ class HelpMessageDialog : public QDialog
     Q_OBJECT
 
 public:
-    explicit HelpMessageDialog(QWidget *parent, bool about);
+    enum Mode {
+        AboutMode,
+        CommandLineOptionsMode
+    };
+
+    explicit HelpMessageDialog(QWidget *parent, Mode _mode);
     ~HelpMessageDialog();
 
     void printToConsole();
@@ -31,6 +36,7 @@ class HelpMessageDialog : public QDialog
 private:
     Ui::HelpMessageDialog *ui;
     QString text;
+    Mode mode;
 
 private Q_SLOTS:
     void on_okButton_accepted();