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diff --git a/src/dolphinurlnavigatorscontroller.h b/src/dolphinurlnavigatorscontroller.h
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+/*
+    This file is part of the KDE project
+    SPDX-FileCopyrightText: 2020 Felix Ernst <[email protected]>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
+
+#ifndef DOLPHINURLNAVIGATORSCONTROLLER_H
+#define DOLPHINURLNAVIGATORSCONTROLLER_H
+
+#include <KCompletion>
+
+#include <QObject>
+
+#include <forward_list>
+
+class DolphinUrlNavigator;
+
+/**
+ * @brief A controller managing all DolphinUrlNavigators.
+ *
+ * This class is used to apply settings changes to all constructed DolphinUrlNavigators.
+ *
+ * @see DolphinUrlNavigator
+ */
+class DolphinUrlNavigatorsController : public QObject
+{
+    Q_OBJECT
+
+public:
+    DolphinUrlNavigatorsController() = delete;
+
+public slots:
+    /**
+     * Refreshes all DolphinUrlNavigators to get synchronized with the
+     * Dolphin settings if they were changed.
+     */
+    static void slotReadSettings();
+
+    static void slotPlacesPanelVisibilityChanged(bool visible);
+
+private:
+    /**
+     * @return wether the places selector of DolphinUrlNavigators should be visible.
+     */
+    static bool placesSelectorVisible();
+
+    /**
+     * Adds \p dolphinUrlNavigator to the list of DolphinUrlNavigators
+     * controlled by this class.
+     */
+    static void registerDolphinUrlNavigator(DolphinUrlNavigator *dolphinUrlNavigator);
+
+    /**
+     * Removes \p dolphinUrlNavigator from the list of DolphinUrlNavigators
+     * controlled by this class.
+     */
+    static void unregisterDolphinUrlNavigator(DolphinUrlNavigator *dolphinUrlNavigator);
+
+private slots:
+    /**
+     * Sets the completion mode for all DolphinUrlNavigators and saves it in settings.
+     */
+    static void setCompletionMode(const KCompletion::CompletionMode completionMode);
+
+private:
+    /** Contains all currently constructed DolphinUrlNavigators */
+    static std::forward_list<DolphinUrlNavigator *> s_instances;
+
+    /** Caches the (negated) places panel visibility */
+    static bool s_placesSelectorVisible;
+
+    friend class DolphinUrlNavigator;
+};
+
+#endif // DOLPHINURLNAVIGATORSCONTROLLER_H