Show/hide track should create an undo/redo entry

src/timeline2/model/timelineitemmodel.cpp

@@ -449,6 +449,22 @@ void TimelineItemModel::setTrackName(int trackId, const QString &text)
     PUSH_UNDO(undo_lambda, redo_lambda, i18n("Edit item"));
 }
 
+void TimelineItemModel::hideTrack(int trackId, const QString state)
+{
+    QWriteLocker locker(&m_lock);
+    QString previousState = getTrackProperty(trackId, QStringLiteral("hide")).toString();
+    Fun undo_lambda = [this, trackId, previousState]() {
+        setTrackProperty(trackId, QStringLiteral("hide"), previousState);
+        return true;
+    };
+    Fun redo_lambda = [this, trackId, state]() {
+        setTrackProperty(trackId, QStringLiteral("hide"), state);
+        return true;
+    };
+    redo_lambda();
+    PUSH_UNDO(undo_lambda, redo_lambda, i18n("Edit item"));
+}
+
 void TimelineItemModel::setTrackProperty(int trackId, const QString &name, const QString &value)
 {
     std::shared_ptr<TrackModel> track = getTrackById(trackId);

src/timeline2/model/timelineitemmodel.hpp

@@ -88,6 +88,7 @@ public:
        @param text is the new track name.
     */
     Q_INVOKABLE void setTrackName(int trackId, const QString &text);
+    Q_INVOKABLE void hideTrack(int trackId, const QString state);
     /** @brief returns the lower video track index in timeline.
      **/
     int getFirstVideoTrackIndex() const;

src/timeline2/view/qml/TrackHead.qml

@@ -320,7 +320,7 @@ Rectangle {
                 //icon.width: trackHeadRoot.iconSize
                 //icon.height: trackHeadRoot.iconSize
                 icon.name: isAudio ? (isDisabled ? 'kdenlive-hide-audio' : 'kdenlive-show-audio') : (isDisabled ? 'kdenlive-hide-video' : 'kdenlive-show-video')
-                onClicked: controller.setTrackProperty(trackId, "hide", isDisabled ? (isAudio ? '1' : '2') : '3')
+                onClicked: controller.hideTrack(trackId, isDisabled ? (isAudio ? '1' : '2') : '3')
                 ToolTip {
                     visible: muteButton.hovered
                     font: miniFont