/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */

/*

 * 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/.

 */

#include <vcl/toolkit/svtabbx.hxx>

#include "svimpbox.hxx"

//the default NotifyStartDrag is weird to me, and defaults to enabling all

//possibilities when drag starts, while restricting it to some subset of

//the configured drag drop mode would make more sense to me, but I'm not

//going to change the baseclass

class LclTabListBox final : public SvTabListBox

{

    Link<SvTreeListBox*, void> m_aModelChangedHdl;

    Link<SvTreeListBox*, bool> m_aStartDragHdl;

    Link<SvTreeListBox*, void> m_aEndDragHdl;

    Link<SvTreeListEntry*, bool> m_aEditingEntryHdl;

    Link<const IterString&, bool> m_aEditedEntryHdl;

public:

    LclTabListBox(vcl::Window* pParent, WinBits nWinStyle)

        : SvTabListBox(pParent, nWinStyle)

    {

    }

    void SetModelChangedHdl(const Link<SvTreeListBox*, void>& rLink) { m_aModelChangedHdl = rLink; }

    void SetStartDragHdl(const Link<SvTreeListBox*, bool>& rLink) { m_aStartDragHdl = rLink; }

    void SetEndDragHdl(const Link<SvTreeListBox*, void>& rLink) { m_aEndDragHdl = rLink; }

    void SetEditingEntryHdl(const Link<SvTreeListEntry*, bool>& rLink)

    {

        m_aEditingEntryHdl = rLink;

    }

    void SetEditedEntryHdl(const Link<const IterString&, bool>& rLink)

    {

        m_aEditedEntryHdl = rLink;

    }

    virtual DragDropMode NotifyStartDrag() override { return GetDragDropMode(); }

    virtual void StartDrag(sal_Int8 nAction, const Point& rPosPixel) override

    {

        if (m_aStartDragHdl.Call(this))

            return;

        SvTabListBox::StartDrag(nAction, rPosPixel);

    }

    virtual void DragFinished(sal_Int8 nDropAction) override

    {

        SvTabListBox::DragFinished(nDropAction);

        m_aEndDragHdl.Call(this);

    }

    virtual void ModelHasCleared() override

    {

        SvTabListBox::ModelHasCleared();

        m_aModelChangedHdl.Call(this);

    }

    virtual void ModelHasInserted(SvTreeListEntry* pEntry) override

    {

        SvTabListBox::ModelHasInserted(pEntry);

        m_aModelChangedHdl.Call(this);

    }

    virtual void ModelHasInsertedTree(SvTreeListEntry* pEntry) override

    {

        SvTabListBox::ModelHasInsertedTree(pEntry);

        m_aModelChangedHdl.Call(this);

    }

    virtual void ModelHasMoved(SvTreeListEntry* pSource) override

    {

        SvTabListBox::ModelHasMoved(pSource);

        m_aModelChangedHdl.Call(this);

    }

    virtual void ModelHasRemoved(SvTreeListEntry* pEntry) override

    {

        SvTabListBox::ModelHasRemoved(pEntry);

        m_aModelChangedHdl.Call(this);

    }

    SvTreeListEntry* GetTargetAtPoint(const Point& rPos, bool bHighLightTarget, bool bScroll = true)

    {

        SvTreeListEntry* pOldTargetEntry = m_pTargetEntry;

        m_pTargetEntry = PosOverBody(rPos) ? m_pImpl->GetEntry(rPos) : nullptr;

        if (pOldTargetEntry != m_pTargetEntry)

            ImplShowTargetEmphasis(pOldTargetEntry, false);

        if (bScroll)

        {

            // scroll

            if (rPos.Y() < 12)

            {

                ImplShowTargetEmphasis(m_pTargetEntry, false);

                ScrollOutputArea(+1);

            }

            else

            {

                Size aSize(m_pImpl->GetOutputSize());

                if (rPos.Y() > aSize.Height() - 12)

                {

                    ImplShowTargetEmphasis(m_pTargetEntry, false);

                    ScrollOutputArea(-1);

                }

            }

        }

        if (m_pTargetEntry && bHighLightTarget)

            ImplShowTargetEmphasis(m_pTargetEntry, true);

        return m_pTargetEntry;

    }

    virtual SvTreeListEntry* GetDropTarget(const Point& rPos) override

    {

        return GetTargetAtPoint(rPos, true);

    }

    virtual bool EditingEntry(SvTreeListEntry* pEntry) override

    {

        return m_aEditingEntryHdl.Call(pEntry);

    }

    virtual bool EditedEntry(SvTreeListEntry* pEntry, const OUString& rNewText) override

    {

        return m_aEditedEntryHdl.Call(IterString(pEntry, rNewText));

    }

};

/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */