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diff --git a/svx/source/inc/galbrws1.hxx b/svx/source/inc/galbrws1.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <svl/lstner.hxx>
+#include <vcl/customweld.hxx>
+#include <vcl/transfer.hxx>
+#include <vcl/weld.hxx>
+#include <svx/galmisc.hxx>
+#include <svx/galctrl.hxx>
+#include <unotools/charclass.hxx>
+#include <vector>
+#include <com/sun/star/util/XURLTransformer.hpp>
+#include <com/sun/star/frame/XDispatch.hpp>
+#include <com/sun/star/frame/XFrame.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+class GalleryBrowser1;
+
+class Gallery;
+class GalleryThemeEntry;
+class GalleryTheme;
+class VclAbstractDialog;
+struct ExchangeData;
+class SfxItemSet;
+class GalleryDragDrop;
+class GalleryIconView;
+class GalleryListView;
+class GalleryPreview;
+class SgaObject;
+
+enum GalleryBrowserMode
+{
+    GALLERYBROWSERMODE_NONE = 0,
+    GALLERYBROWSERMODE_ICON = 1,
+    GALLERYBROWSERMODE_LIST = 2,
+    GALLERYBROWSERMODE_PREVIEW = 3
+};
+
+enum class GalleryBrowserTravel
+{
+    First,
+    Last,
+    Previous,
+    Next
+};
+
+enum class GalleryItemFlags
+{
+    Title = 0x0002,
+    Path = 0x0004
+};
+namespace o3tl
+{
+template <> struct typed_flags<GalleryItemFlags> : is_typed_flags<GalleryItemFlags, 0x0006>
+{
+};
+}
+
+namespace svx::sidebar
+{
+class GalleryControl;
+}
+
+struct ThemeEntry
+{
+    OUString maThemeName;
+    OUString maEntryTitle;
+    size_t mnIdInTheme;
+
+    ThemeEntry(const OUString& rThemeName, const OUString& rEntryTitle, size_t nId)
+        : maThemeName(rThemeName)
+        , maEntryTitle(rEntryTitle)
+        , mnIdInTheme(nId)
+    {
+    }
+};
+typedef ::std::vector<ThemeEntry> GalleryThemeEntries;
+
+class GalleryBrowser1 final : public SfxListener
+{
+    friend class GalleryBrowser;
+    friend class svx::sidebar::GalleryControl;
+
+private:
+    std::unique_ptr<weld::Button> mxNewTheme;
+    std::unique_ptr<weld::TreeView> mxThemes;
+    std::unique_ptr<weld::Button> mxMoreGalleries;
+    Gallery* mpGallery;
+    std::unique_ptr<ExchangeData> mpExchangeData;
+    std::unique_ptr<SfxItemSet> mpThemePropsDlgItemSet;
+
+    OUString aImgNormal;
+    OUString aImgDefault;
+    OUString aImgReadOnly;
+
+    GalleryTheme* mpCurTheme;
+    std::unique_ptr<GalleryIconView> mxIconView;
+    std::unique_ptr<weld::CustomWeld> mxIconViewWin;
+    std::unique_ptr<weld::TreeView> mxListView;
+    std::unique_ptr<GalleryDragDrop> mxDragDropTargetHelper;
+    std::unique_ptr<GalleryPreview> mxPreview;
+    std::unique_ptr<weld::CustomWeld> mxPreviewWin;
+    std::unique_ptr<weld::ToggleButton> mxIconButton;
+    std::unique_ptr<weld::ToggleButton> mxListButton;
+    std::unique_ptr<weld::Entry> mxSearchField;
+    std::unique_ptr<weld::Label> mxInfoBar;
+    Size maPreviewSize;
+    rtl::Reference<GalleryTransferable> m_xHelper;
+    sal_uInt32 mnCurActionPos;
+    GalleryBrowserMode meMode;
+    GalleryBrowserMode meLastMode;
+
+    GalleryThemeEntries maAllThemeEntries;
+    GalleryThemeEntries maFoundThemeEntries;
+
+    css::uno::Reference<css::uno::XComponentContext> m_xContext;
+    css::uno::Reference<css::util::XURLTransformer> m_xTransformer;
+
+    CharClass m_aCharacterClassficator;
+
+    void ImplInsertThemeEntry(const GalleryThemeEntry* pEntry);
+    static void ImplFillExchangeData(const GalleryTheme* pThm, ExchangeData& rData);
+    void ImplGetExecuteVector(std::vector<OUString>& o_aExec);
+    void ImplExecute(std::u16string_view rIdent);
+    void ImplGalleryThemeProperties(std::u16string_view rThemeName, bool bCreateNew);
+    void EndNewThemePropertiesDlgHdl(sal_Int32 nResult);
+    void EndThemePropertiesDlgHdl(sal_Int32 nResult);
+    void ImplEndGalleryThemeProperties(bool bCreateNew, sal_Int32 nResult);
+
+    void ImplUpdateViews(sal_uInt16 nSelectionId);
+    void ImplUpdateInfoBar();
+    sal_uInt32 ImplGetSelectedItemId(const Point* pSelPosPixel, Point& rSelPos);
+    void ImplSelectItemId(sal_uInt32 nItemId);
+    void ImplUpdateSelection();
+    void UpdateRows(bool bVisibleOnly);
+    void FillThemeEntries();
+
+    // SfxListener
+    virtual void Notify(SfxBroadcaster& rBC, const SfxHint& rHint) override;
+
+    DECL_LINK(ClickNewThemeHdl, weld::Button&, void);
+    DECL_LINK(SelectThemeHdl, weld::TreeView&, void);
+    DECL_LINK(PopupMenuHdl1, const CommandEvent&, bool);
+    DECL_LINK(KeyInputHdl1, const KeyEvent&, bool);
+    DECL_STATIC_LINK(GalleryBrowser1, OnMoreGalleriesClick, weld::Button&, void);
+
+    DECL_LINK(SelectObjectHdl, weld::TreeView&, void);
+    DECL_LINK(SelectObjectValueSetHdl, ValueSet*, void);
+    DECL_LINK(SelectTbxHdl, weld::Toggleable&, void);
+    DECL_LINK(PopupMenuHdl2, const CommandEvent&, bool);
+    DECL_LINK(KeyInputHdl2, const KeyEvent&, bool);
+    DECL_LINK(RowActivatedHdl, weld::TreeView&, bool);
+    DECL_LINK(DragBeginHdl, bool&, bool);
+    DECL_LINK(VisRowsScrolledHdl, weld::TreeView&, void);
+    DECL_LINK(SizeAllocHdl, const Size&, void);
+    DECL_LINK(SearchHdl, weld::Entry&, void);
+
+    static GalleryBrowserMode meInitMode;
+
+public:
+    GalleryBrowser1(weld::Builder& rBuilder, Gallery* pGallery);
+
+    ~GalleryBrowser1();
+
+    void SelectTheme(sal_uInt16 nThemePos)
+    {
+        mxThemes->select(nThemePos);
+        SelectThemeHdl(*mxThemes);
+    }
+    OUString GetSelectedTheme() const { return mxThemes->get_selected_text(); }
+
+    static OUString GetItemText(const SgaObject& rObj, GalleryItemFlags nItemTextFlags);
+
+public:
+    void SelectTheme(std::u16string_view rThemeName);
+
+    GalleryBrowserMode GetMode() const { return meMode; }
+    void SetMode(GalleryBrowserMode eMode);
+
+    weld::Widget* GetViewWindow() const;
+
+    void Travel(GalleryBrowserTravel eTravel);
+
+    INetURLObject GetURL() const;
+    OUString GetFilterName() const;
+
+    sal_Int8 AcceptDrop(const DropTargetHelper& rTarget);
+    sal_Int8 ExecuteDrop(const ExecuteDropEvent& rEvt);
+    bool StartDrag();
+    void TogglePreview();
+    bool ShowContextMenu(const CommandEvent& rCEvt);
+    bool KeyInput(const KeyEvent& rEvt);
+    bool ViewBoxHasFocus() const;
+
+    static css::uno::Reference<css::frame::XFrame> GetFrame();
+    const css::uno::Reference<css::util::XURLTransformer>& GetURLTransformer() const
+    {
+        return m_xTransformer;
+    }
+
+    void Execute(std::u16string_view rIdent);
+    void DispatchAdd(const css::uno::Reference<css::frame::XDispatch>& rxDispatch,
+                     const css::util::URL& rURL);
+
+    DECL_STATIC_LINK(GalleryBrowser1, AsyncDispatch_Impl, void*, void);
+};
+
+class GalleryDragDrop final : public DropTargetHelper
+{
+private:
+    GalleryBrowser1* m_pParent;
+
+    virtual sal_Int8 AcceptDrop(const AcceptDropEvent& /*rEvt*/) override
+    {
+        return m_pParent->AcceptDrop(*this);
+    }
+
+    virtual sal_Int8 ExecuteDrop(const ExecuteDropEvent& rEvt) override
+    {
+        return m_pParent->ExecuteDrop(rEvt);
+    }
+
+public:
+    GalleryDragDrop(GalleryBrowser1* pParent,
+                    const css::uno::Reference<css::datatransfer::dnd::XDropTarget>& rDropTarget)
+        : DropTargetHelper(rDropTarget)
+        , m_pParent(pParent)
+    {
+    }
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */