[libcalamaresui] Factor out the pastebin UI

- offer a convenience method for showing a popup and
  URL information and copying the URL to the clipboard
- use that from ViewManager (on failure) and DebugWindow (on demand)

src/calamares/DebugWindow.cpp

@@ -216,7 +216,7 @@ DebugWindow::DebugWindow()
 
     // Send Log button only if it would be useful
     m_ui->sendLogButton->setVisible( CalamaresUtils::Paste::isEnabled() );
-    connect( m_ui->sendLogButton, &QPushButton::clicked, [this]() { CalamaresUtils::Paste::doLogUpload( this ); } );
+    connect( m_ui->sendLogButton, &QPushButton::clicked, [this]() { CalamaresUtils::Paste::doLogUploadUI( this ); } );
 
     CALAMARES_RETRANSLATE( m_ui->retranslateUi( this ); setWindowTitle( tr( "Debug information" ) ); );
 }

src/libcalamaresui/ViewManager.cpp

@@ -190,26 +190,7 @@ ViewManager::onInstallationFailed( const QString& message, const QString& detail
     connect( msgBox, &QMessageBox::buttonClicked, [msgBox]( QAbstractButton* button ) {
         if ( msgBox->buttonRole( button ) == QMessageBox::ButtonRole::YesRole )
         {
-            QString pasteUrl = CalamaresUtils::Paste::doLogUpload( msgBox );
-            QString pasteUrlMessage;
-            if ( pasteUrl.isEmpty() )
-            {
-                pasteUrlMessage = tr( "The upload was unsuccessful. No web-paste was done." );
-            }
-            else
-            {
-                QClipboard* clipboard = QApplication::clipboard();
-                clipboard->setText( pasteUrl, QClipboard::Clipboard );
-
-                if ( clipboard->supportsSelection() )
-                {
-                    clipboard->setText( pasteUrl, QClipboard::Selection );
-                }
-                QString pasteUrlFmt = tr( "Install log posted to\n\n%1\n\nLink copied to clipboard" );
-                pasteUrlMessage = pasteUrlFmt.arg( pasteUrl );
-            }
-
-            QMessageBox::critical( nullptr, tr( "Install Log Paste URL" ), pasteUrlMessage );
+            CalamaresUtils::Paste::doLogUploadUI( msgBox );
         }
         QApplication::quit();
     } );

src/libcalamaresui/utils/Paste.cpp

@@ -14,10 +14,14 @@
 #include "utils/Logger.h"
 #include "utils/Units.h"
 
+#include <QApplication>
+#include <QClipboard>
 #include <QFile>
 #include <QFileInfo>
+#include <QMessageBox>
 #include <QTcpSocket>
 #include <QUrl>
+#include <QWidget>
 
 using namespace CalamaresUtils::Units;
 
@@ -127,6 +131,37 @@ CalamaresUtils::Paste::doLogUpload( QObject* parent )
     return QString();
 }
 
+QString
+CalamaresUtils::Paste::doLogUploadUI( QWidget* parent )
+{
+    // These strings originated in the ViewManager class
+    QString pasteUrl = CalamaresUtils::Paste::doLogUpload( parent );
+    QString pasteUrlMessage;
+    if ( pasteUrl.isEmpty() )
+    {
+        pasteUrlMessage = QCoreApplication::translate( "Calamares::ViewManager",
+                                                       "The upload was unsuccessful. No web-paste was done." );
+    }
+    else
+    {
+        QClipboard* clipboard = QApplication::clipboard();
+        clipboard->setText( pasteUrl, QClipboard::Clipboard );
+
+        if ( clipboard->supportsSelection() )
+        {
+            clipboard->setText( pasteUrl, QClipboard::Selection );
+        }
+        QString pasteUrlFmt = QCoreApplication::translate( "Calamares::ViewManager",
+                                                           "Install log posted to\n\n%1\n\nLink copied to clipboard" );
+        pasteUrlMessage = pasteUrlFmt.arg( pasteUrl );
+    }
+
+    QMessageBox::critical(
+        nullptr, QCoreApplication::translate( "Calamares::ViewManager", "Install Log Paste URL" ), pasteUrlMessage );
+    return pasteUrl;
+}
+
+
 bool
 CalamaresUtils::Paste::isEnabled()
 {

src/libcalamaresui/utils/Paste.h

@@ -13,6 +13,7 @@
 #include <QString>
 
 class QObject;
+class QWidget;
 
 namespace CalamaresUtils
 {
@@ -24,6 +25,13 @@ namespace Paste
  */
 QString doLogUpload( QObject* parent );
 
+/** @brief Send the current log file to a pastebin
+ *
+ * As doLogUpload(), but also sets the clipboard and displays
+ * a message saying it's been done.
+ */
+QString doLogUploadUI( QWidget* parent );
+
 /** @brief Is paste enabled?
  *
  * Checks the branding instance if paste can be done.