#3185 add: deleting of note subfolders with Delete or Backspace key

Signed-off-by: Patrizio Bekerle <[email protected]>

CHANGELOG.md

@@ -3,6 +3,8 @@
 ## 24.12.6
 - A possible crash when pasting HTML as Markdown or pasting as text file was fixed
   (for [#3184](https://github.com/pbek/QOwnNotes/issues/3184))
+- It is now possible to allow deleting of subfolders with the `Delete` or `Backspace` key,
+  like for notes and tags (for [#3185](https://github.com/pbek/QOwnNotes/issues/3185))
 
 ## 24.12.5
 - Both note links and the link dialog are now supporting also heading 1, not only

src/widgets/notesubfoldertree.cpp

@@ -2,6 +2,7 @@
 
 #include <QHeaderView>
 #include <QMenu>
+#include <QKeyEvent>
 #include <memory>
 
 #include "entities/notefolder.h"
@@ -17,7 +18,7 @@ NoteSubFolderTree::NoteSubFolderTree(QWidget *parent) : QTreeWidget(parent) {
         header()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
     });
     setContextMenuPolicy(Qt::CustomContextMenu);
-
+    installEventFilter(this);
     initConnections();
 }
 
@@ -428,3 +429,16 @@ void NoteSubFolderTree::onItemSelectionChanged() {
         Q_EMIT multipleSubfoldersSelected();
     }
 }
+
+bool NoteSubFolderTree::eventFilter(QObject *obj, QEvent *event) {
+    if (event->type() == QEvent::KeyPress) {
+        auto *keyEvent = dynamic_cast<QKeyEvent *>(event);
+
+        if ((keyEvent->key() == Qt::Key_Delete) || (keyEvent->key() == Qt::Key_Backspace)) {
+            removeSelectedNoteSubFolders(this);
+            return true;
+        }
+    }
+
+    return QTreeWidget::eventFilter(obj, event);
+}

src/widgets/notesubfoldertree.h

@@ -40,4 +40,7 @@ class NoteSubFolderTree : public QTreeWidget {
     void initConnections();
     QTreeWidgetItem *addNoteSubFolder(QTreeWidgetItem *parentItem,
                                       const NoteSubFolder &noteSubFolder);
+
+   protected:
+    bool eventFilter(QObject *obj, QEvent *event) override;
 };