Better handling of missing and overwrite files

mainwindow.cpp

@@ -407,6 +407,9 @@ void MainWindow::copyOrMove(bool copy, const QString &dest)
     if(!dest.isEmpty() && dir.exists())
     {
         int i = 0;
+        int missing = 0;
+        bool overwriteAll = false;
+        bool skipAll = false;
         QStringList files = m_database->getMarkedFiles();
         QProgressDialog progress(copy ? tr("Copying") : tr("Moving"), tr("Cancel"), 0, files.size(), this);
         progress.setWindowModality(Qt::WindowModal);
@@ -418,8 +421,42 @@ void MainWindow::copyOrMove(bool copy, const QString &dest)
             QFile srcFile(file);
             QFile dstFile(dir.absoluteFilePath(info.fileName()));
 
-            if(dstFile.exists())
+            if(!srcFile.exists())
+            {
+                missing++;
                 continue;
+            }
+
+            if(dstFile.exists())
+            {
+                if(skipAll)
+                {
+                    continue;
+                }
+                else if(overwriteAll)
+                {
+                    dstFile.remove();
+                }
+                else
+                {
+                    QMessageBox::StandardButton button = QMessageBox::question(this, tr("Overwrite file?"), tr("Destination file %1 already exists. Overwrite?").arg(dstFile.fileName()),
+                                            QMessageBox::Yes | QMessageBox::YesToAll | QMessageBox::No | QMessageBox::NoToAll);
+                    switch (button)
+                    {
+                    case QMessageBox::YesToAll:
+                        overwriteAll = true;
+                    case QMessageBox::Yes:
+                        dstFile.remove();
+                        break;
+                    case QMessageBox::NoToAll:
+                        skipAll = true;
+                    case QMessageBox::No:
+                        continue;
+                    default:
+                        break;
+                    }
+                }
+            }
 
             if(progress.wasCanceled())
                 return;
@@ -458,6 +495,8 @@ void MainWindow::copyOrMove(bool copy, const QString &dest)
             progress.setValue(i++);
         }
         m_database->clearMarkedFiles();
+        if(missing)
+            QMessageBox::information(this, tr("Missing marked files"), tr("%1 marked files were missing. They were skipped.").arg(missing));
     }
 }