1 files changed, 41 insertions, 0 deletions
diff --git a/desktop-widgets/tagwidget.cpp b/desktop-widgets/tagwidget.cpp
index 743e4fbca..e7f2a9bfe 100644
--- a/desktop-widgets/tagwidget.cpp
+++ b/desktop-widgets/tagwidget.cpp
@@ -3,6 +3,7 @@
 #include "mainwindow.h"
 #include "tab-widgets/maintab.h"
 #include <QCompleter>
+#include <QMimeData>
 
 TagWidget::TagWidget(QWidget *parent) : GroupedLineEdit(parent), m_completer(NULL), lastFinishedTag(false)
 {
@@ -211,3 +212,43 @@ void TagWidget::focusOutEvent(QFocusEvent *ev)
 	GroupedLineEdit::focusOutEvent(ev);
 	emit editingFinished();
 }
+
+// Implement simple drag and drop: text dropped onto the widget
+// will be added as a new tag at the end. This overrides
+// Qt's implementation which resulted in weird UI behavior,
+// as the user may succeed in scrolling the view port.
+static void handleDragEvent(QDragMoveEvent *e)
+{
+	if (e->mimeData()->hasFormat(QStringLiteral("text/plain")))
+		e->acceptProposedAction();
+}
+
+void TagWidget::dragEnterEvent(QDragEnterEvent *e)
+{
+	handleDragEvent(e);
+}
+
+void TagWidget::dragMoveEvent(QDragMoveEvent *e)
+{
+	handleDragEvent(e);
+}
+
+void TagWidget::dragLeaveEvent(QDragLeaveEvent *)
+{
+}
+
+void TagWidget::dropEvent(QDropEvent *e)
+{
+	e->acceptProposedAction();
+
+	QString newTag = e->mimeData()->text().trimmed();
+	if (newTag.isEmpty())
+		return;
+
+	QString s = text().trimmed();
+	if (!s.isEmpty())
+		s += ", ";
+	s += newTag;
+	setText(s);
+	emit editingFinished();
+}