view: Add setting to trigger user set action with double click

Default action is select-all.

2 files changed, 11 insertions, 0 deletions

diff --git a/src/kitemviews/kitemlistcontroller.cpp b/src/kitemviews/kitemlistcontroller.cpp
index 2cda2987b..b25c73843 100644
--- a/src/kitemviews/kitemlistcontroller.cpp
+++ b/src/kitemviews/kitemlistcontroller.cpp
@@ -700,6 +700,11 @@ bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event,
     const QPointF pos = transform.map(event->pos());
     const std::optional<int> index = m_view->itemAt(pos);
 
+    if (!index.has_value()) {
+        Q_EMIT doubleClickViewBackground(event->button());
+        return false;
+    }
+
     // Expand item if desired - See Bug 295573
     if (m_mouseDoubleClickAction != ActivateItemOnly) {
         if (m_view && m_model && m_view->supportsItemExpanding() && m_model->isExpandable(index.value_or(-1))) {
diff --git a/src/kitemviews/kitemlistcontroller.h b/src/kitemviews/kitemlistcontroller.h
index ccfc76267..fcb971fb7 100644
--- a/src/kitemviews/kitemlistcontroller.h
+++ b/src/kitemviews/kitemlistcontroller.h
@@ -230,6 +230,12 @@ Q_SIGNALS:
     void decreaseZoom();
     void swipeUp();
 
+    /**
+     * Emitted when the view's background is double-clicked.
+     * Used to trigger an user configured action.
+     */
+    void doubleClickViewBackground(Qt::MouseButton button);
+
 public Q_SLOTS:
     void slotStateChanged(QScroller::State newState);