Show type-ahead typing feedback in the status bar

The typed keys are displayed in the status bar while also displaying
which file name they were auto-completed to (i.e. which file was
selected because of the typing).

This commit contains some refactoring to keep the original status bar
functionality working as expected.

This commit also separates DolphinMainWindow from DolphinStatusBar which
is great news architecture-wise. The status bar is encapsulated within
the DolphinViewContainer.

2 files changed, 8 insertions, 0 deletions

diff --git a/src/kitemviews/kitemlistcontroller.cpp b/src/kitemviews/kitemlistcontroller.cpp
index ef0f9dc14..e87ed3c18 100644
--- a/src/kitemviews/kitemlistcontroller.cpp
+++ b/src/kitemviews/kitemlistcontroller.cpp
@@ -547,6 +547,7 @@ void KItemListController::slotChangeCurrentItem(const QString &text, bool search
         m_view->scrollToItem(index, KItemListView::ViewItemPosition::Beginning);
         *found = true;
     }
+    Q_EMIT typeAheadUsed(text, index >= 0 ? std::make_optional<int>(index) : std::nullopt);
 }
 
 void KItemListController::slotAutoActivationTimeout()
diff --git a/src/kitemviews/kitemlistcontroller.h b/src/kitemviews/kitemlistcontroller.h
index 48a518610..6379acbd8 100644
--- a/src/kitemviews/kitemlistcontroller.h
+++ b/src/kitemviews/kitemlistcontroller.h
@@ -190,6 +190,13 @@ Q_SIGNALS:
     void aboveItemDropEvent(int index, QGraphicsSceneDragDropEvent *event);
 
     /**
+     * Emits the keys the user typed for searching so they can be displayed back to the user.
+     * @param typedString   A string of basic interpretation of key presses e.g. "qwert".
+     * @param foundIndex    The index of the item that was marked as current in response to this search.
+     */
+    void typeAheadUsed(const QString &typedString, std::optional<int> foundIndex);
+
+    /**
      * Is emitted if the Escape key is pressed.
      */
     void escapePressed();