Add Duplicate feature

Summary: Adds a Duplicate feature to Dolphin, showing up as a menu item in the File menu that appears when one or more items are selected and the directory is writable. Duplicated items receive the names of the original files with " copy" appended before the file extension, if any.

Test Plan:

{F5201386} {F5201393}

Test cases:

- Try to duplicate when nothing is selected: **PASS**: menu item is grayed out
- Try to duplicate anything on a read-only local volume: **PASS**:  menu item is grayed out
- Try to duplicate anything on a read-only samba share: **PASS**: menu item is grayed out
- Duplicate single local file on R/W volume: **PASS**: item is duplicated and named correctly
- Duplicate multiple local files on R/W volume: **PASS**: 3 items are duplicated, named correctly, and selected
- Duplicate single local directory on  R/W volume: **PASS**: item is duplicated and named correctly, but a rename operation is not initiated
- Duplicate multiple local directories on R/W volume: **PASS**: 3 items are duplicated, named correctly, and selected
- Duplicate single file on R/W samba share: **PASS**: item is duplicated and correctly
- Duplicate multiple files on R/W samba share: **PASS**: 3 items are duplicated, named correctly, and selected
- Duplicate single directory on R/W samba share: **PASS**: item is duplicated and named correctly
- Duplicate multiple directory on R/W samba share: **PASS**: 3 items are duplicated, named correctly, and selected
- Try to undo a successful duplication: **PASS**: operation is undone

This is my first attempt at a big change like this and I'm sure it's full of issues. I will accept any and all suggestions for improvement. :)

Reviewers: #dolphin, #kde_applications, elvisangelaccio, dfaure, broulik, davidedmundson

Subscribers: kfm-devel, meven, markg, fazevedo, cfeck, #dolphin

Tags: #dolphin

Differential Revision: https://phabricator.kde.org/D8208

1 files changed, 45 insertions, 0 deletions

diff --git a/src/views/dolphinview.cpp b/src/views/dolphinview.cpp
index cfece0fe6..776436032 100644
--- a/src/views/dolphinview.cpp
+++ b/src/views/dolphinview.cpp
@@ -63,6 +63,7 @@
 #include <QDropEvent>
 #include <QGraphicsSceneDragDropEvent>
 #include <QMenu>
+#include <QMimeDatabase>
 #include <QPixmapCache>
 #include <QPointer>
 #include <QScrollBar>
@@ -704,6 +705,50 @@ void DolphinView::pasteIntoFolder()
     }
 }
 
+void DolphinView::duplicateSelectedItems()
+{
+    const KFileItemList itemList = selectedItems();
+    if (itemList.isEmpty()) {
+        return;
+    }
+
+    const QMimeDatabase db;
+
+    // Duplicate all selected items and append "copy" to the end of the file name
+    // but before the filename extension, if present
+    QList<QUrl> newSelection;
+    for (const auto &item : itemList) {
+        const QUrl originalURL  = item.url();
+        const QString originalFileName = item.name();
+        QString extension = db.suffixForFileName(originalFileName);
+
+        QUrl duplicateURL = originalURL;
+
+        // No extension; new filename is "<oldfilename> copy"
+        if (extension.isEmpty()) {
+            duplicateURL.setPath(i18nc("<file path> copy", "%1 copy", originalURL.path()));
+        // There's an extension; new filename is "<oldfilename> copy.<extension>"
+        } else {
+            // Need to add a dot since QMimeDatabase::suffixForFileName() doesn't include it
+            extension = QLatin1String(".") + extension;
+            const QString directoryPath = originalURL.adjusted(QUrl::RemoveFilename).path();
+            const QString originalFilenameWithoutExtension = originalFileName.chopped(extension.size());
+            // Preserve file's original filename extension in case the casing differs
+            // from what QMimeDatabase::suffixForFileName() returned
+            const QString originalExtension = originalFileName.right(extension.size());
+            duplicateURL.setPath(i18nc("<file path><filename> copy.<extension>", "%1%2 copy%3", directoryPath, originalFilenameWithoutExtension, originalExtension));
+        }
+
+        KIO::CopyJob* job = KIO::copyAs(originalURL, duplicateURL, KIO::HideProgressInfo);
+        KJobWidgets::setWindow(job, this);
+
+        if (job) {
+            newSelection << duplicateURL;
+            KIO::FileUndoManager::self()->recordCopyJob(job);
+        }
+    }
+}
+
 void DolphinView::stopLoading()
 {
     m_model->cancelDirectoryLoading();