/* -*- 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/.

 *

 */

#pragma once

#include <sal/config.h>

#include <svx/svxdllapi.h>

#include <editeng/editeng.hxx>

#include <editeng/editview.hxx>

#include <vcl/outdev.hxx>

#include <vcl/timer.hxx>

#include <vcl/virdev.hxx>

#include <vcl/weld/customweld.hxx>

class WeldEditAccessible;

class SVX_DLLPUBLIC WeldEditView : public weld::CustomWidgetController, public EditViewCallbacks

{

public:

    WeldEditView();

    virtual void SetDrawingArea(weld::DrawingArea* pDrawingArea) override;

    virtual int GetSurroundingText(OUString& rSurrounding) override;

    virtual bool DeleteSurroundingText(const Selection& rRange) override;

    void SetText(const OUString& rStr);

    OUString GetText() const;

    virtual FactoryFunction GetUITestFactory() const override;

    void SetModifyHdl(const Link<LinkParamNone*, void>& rLink);

    virtual EditView* GetEditView() const;

    virtual EditEngine* GetEditEngine() const;

    bool HasSelection() const;

    void Delete();

    void Cut();

    void Copy();

    void Paste();

    virtual ~WeldEditView() override;

protected:

    bool m_bAcceptsTab;

    // m_xDropTarget must outlive m_xEditView

    css::uno::Reference<css::datatransfer::dnd::XDropTarget> m_xDropTarget;

    std::unique_ptr<EditEngine> m_xEditEngine;

    std::unique_ptr<EditView> m_xEditView;

    rtl::Reference<WeldEditAccessible> m_xAccessible;

    // Cursor blink support

    AutoTimer m_aCursorTimer;

    bool m_bCursorVisible;

    tools::Rectangle m_aCachedCursorPixRect; // pixel coords of cached cursor area

    ScopedVclPtrInstance<VirtualDevice> m_xCursorOnDev;

    ScopedVclPtrInstance<VirtualDevice> m_xCursorOffDev;

    DECL_DLLPRIVATE_LINK(BlinkTimerHdl, Timer*, void);

    virtual void makeEditEngine();

    void InitAccessible();

    static void PaintSelection(vcl::RenderContext& rRenderContext, tools::Rectangle const& rRect,

                               std::vector<tools::Rectangle> const& rLogicRects, Color const color);

    void DoPaint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect);

public:

    virtual void Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) override;

    virtual bool MouseMove(const MouseEvent& rMEvt) override;

    virtual bool MouseButtonDown(const MouseEvent& rMEvt) override;

    virtual bool MouseButtonUp(const MouseEvent& rMEvt) override;

    virtual bool KeyInput(const KeyEvent& rKEvt) override;

    virtual bool Command(const CommandEvent& rCEvt) override;

    virtual bool CanFocus() const;

    virtual void GetFocus() override;

    virtual void LoseFocus() override;

    virtual void Resize() override;

    virtual css::uno::Reference<css::datatransfer::clipboard::XClipboard>

    GetClipboard() const override;

    virtual css::uno::Reference<css::datatransfer::dnd::XDropTarget> GetDropTarget() override;

    // Whether Tab will result in entering a tab or not

    bool GetAcceptsTab() const { return m_bAcceptsTab; }

    void SetAcceptsTab(bool bAcceptsTab) { m_bAcceptsTab = bAcceptsTab; }

protected:

    virtual rtl::Reference<comphelper::OAccessible> CreateAccessible() override;

    virtual void EditViewInvalidate(const tools::Rectangle& rRect) override { Invalidate(rRect); }

    virtual void EditViewSelectionChange() override;

    virtual OutputDevice& EditViewOutputDevice() const override

    {

        return GetDrawingArea()->get_ref_device();

    }

    virtual Point EditViewPointerPosPixel() const override;

    virtual void EditViewInputContext(const InputContext& rInputContext) override

    {

        SetInputContext(rInputContext);

    }

    virtual void EditViewCursorRect(const tools::Rectangle& rRect, int nExtTextInputWidth) override

    {

        OutputDevice& rRefDevice = EditViewOutputDevice();

        SetCursorRect(rRefDevice.LogicToPixel(rRect),

                      rRefDevice.LogicToPixel(Size(nExtTextInputWidth, 0)).Width());

    }

    virtual weld::Widget* EditViewPopupParent() const override { return GetDrawingArea(); }

};

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