/* -*- 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 <scdllapi.h>

#include <address.hxx>

#include "csvsplits.hxx"

#include <o3tl/typed_flags_set.hxx>

#include <rtl/ref.hxx>

#include <vcl/weld/customweld.hxx>

#include "AccessibleCsvControl.hxx"

/** Minimum character count for a column in separators mode. */

const sal_Int32 CSV_MINCOLWIDTH         = 8;

/** Maximum length of a cell string. */

const sal_Int32 CSV_MAXSTRLEN          = 0x7FFF;

/** Transparency for header color of selected columns. */

const sal_uInt16 CSV_HDR_TRANSPARENCY   = 85;

/** Minimum distance to border for auto scroll. */

const sal_Int32 CSV_SCROLL_DIST         = 3;

//! TODO make string array dynamic

const sal_Int32 CSV_PREVIEW_LINES       = 32; // maximum count of preview lines

/** Maximum count of columns. */

const sal_Int32 CSV_MAXCOLCOUNT         = MAXCOLCOUNT;

/** Default column data type. */

const sal_Int32 CSV_TYPE_DEFAULT        = 0;

/** Multi selection with different types. */

const sal_Int32 CSV_TYPE_MULTI          = -1;

/** No column selected. */

const sal_Int32 CSV_TYPE_NOSELECTION    = -2;

// External used column types.

const sal_uInt8 SC_COL_STANDARD         = 1;

const sal_uInt8 SC_COL_TEXT             = 2;

const sal_uInt8 SC_COL_MDY              = 3;

const sal_uInt8 SC_COL_DMY              = 4;

const sal_uInt8 SC_COL_YMD              = 5;

const sal_uInt8 SC_COL_SKIP             = 9;

const sal_uInt8 SC_COL_ENGLISH          = 10;

/** Exported data of a column (data used in the dialog). */

struct ScCsvExpData

{

    sal_Int32                   mnIndex;        /// Index of a column.

    sal_uInt8                   mnType;         /// External type of the column.

    ScCsvExpData() : mnIndex( 0 ), mnType( SC_COL_STANDARD ) {}

    ScCsvExpData( sal_Int32 nIndex, sal_uInt8 nType ) :

                                    mnIndex( nIndex ), mnType( nType ) {}

};

typedef ::std::vector< ScCsvExpData > ScCsvExpDataVec;

/** Specifies which element should be used to perform an action. */

enum ScMoveMode

{

    MOVE_NONE,                  /// No action.

    MOVE_FIRST,                 /// First element in current context.

    MOVE_LAST,                  /// Last element in current context.

    MOVE_PREV,                  /// Predecessor of current element in current context.

    MOVE_NEXT,                  /// Successor of current element in current context.

    MOVE_PREVPAGE,              /// Previous page relative to current context.

    MOVE_NEXTPAGE               /// Next page relative to current context.

};

/** Flags for comparison of old and new control layout data. */

enum class ScCsvDiff : sal_uInt32 {

    Equal          = 0x0000,

    PosCount       = 0x0001,

    PosOffset      = 0x0002,

    HeaderWidth    = 0x0004,

    CharWidth      = 0x0008,

    LineCount      = 0x0010,

    LineOffset     = 0x0020,

    HeaderHeight   = 0x0040,

    LineHeight     = 0x0080,

    RulerCursor    = 0x0100,

    GridCursor     = 0x0200,

    HorizontalMask = PosCount | PosOffset | HeaderWidth | CharWidth,

    VerticalMask   = LineCount | LineOffset | HeaderHeight | LineHeight

};

namespace o3tl {

    template<> struct typed_flags<ScCsvDiff> : is_typed_flags<ScCsvDiff, 0x03ff> {};

}

/** A structure containing all layout data valid for both ruler and data grid

    (i.e. scroll position or column width). */

struct ScCsvLayoutData

{

    // horizontal settings

    sal_Int32                   mnPosCount;         /// Number of positions.

    sal_Int32                   mnPosOffset;        /// Horizontal scroll offset.

    sal_Int32                   mnWinWidth;         /// Width of ruler and data grid.

    sal_Int32                   mnHdrWidth;         /// Width of the header column.

    sal_Int32                   mnCharWidth;        /// Pixel width of one character.

    // vertical settings

    sal_Int32                   mnLineCount;        /// Number of data lines.

    sal_Int32                   mnLineOffset;       /// Index of first visible line (0-based).

    sal_Int32                   mnWinHeight;        /// Height of entire data grid (incl. header).

    sal_Int32                   mnHdrHeight;        /// Height of the header line.

    sal_Int32                   mnLineHeight;       /// Height of a data line.

    // cursor settings

    sal_Int32                   mnPosCursor;        /// Position of ruler cursor.

    sal_Int32                   mnColCursor;        /// Position of grid column cursor.

    mutable sal_Int32           mnNoRepaint;        /// >0 = no repaint.

    bool                        mbAppRTL;           /// true = application in RTL mode.

    explicit                    ScCsvLayoutData();

    /** Returns differences to rData.

        @descr  For each difference the appropriate bit is set in the returned value. */

    ScCsvDiff                   GetDiff( const ScCsvLayoutData& rData ) const;

};

inline bool operator==( const ScCsvLayoutData& rData1, const ScCsvLayoutData& rData2 )

{

    return rData1.GetDiff( rData2 ) == ScCsvDiff::Equal;

}

inline bool operator!=( const ScCsvLayoutData& rData1, const ScCsvLayoutData& rData2 )

{

    return !(rData1 == rData2);

}

/** Enumeration of possible commands to change any settings of the CSV controls.

    @descr  Controls have to send commands instead of changing their settings directly.

    This helps to keep the different controls consistent to each other.

    A command can contain 0 to 2 sal_Int32 parameters. In the description of each

    command the required parameters are shown in brackets. [-] means no parameter. */

enum ScCsvCmdType

{

    // misc

    CSVCMD_NONE,                /// No command. [-]

    CSVCMD_REPAINT,             /// Repaint all controls. [-]

    // modify horizontal dimensions

    CSVCMD_SETPOSCOUNT,         /// Change position/column count. [character count]

    CSVCMD_SETPOSOFFSET,        /// Change position offset (scroll pos). [position]

    CSVCMD_SETHDRWIDTH,         /// Change width of the header column. [width in pixel]

    CSVCMD_SETCHARWIDTH,        /// Change character pixel width. [width in pixel]

    // modify vertical dimensions

    CSVCMD_SETLINECOUNT,        /// Change number of data lines. [line count]

    CSVCMD_SETLINEOFFSET,       /// Change first visible line. [line index]

    CSVCMD_SETHDRHEIGHT,        /// Change height of top header line. [height in pixel]

    CSVCMD_SETLINEHEIGHT,       /// Change data line pixel height. [height in pixel}

    // cursors/positions

    CSVCMD_MOVERULERCURSOR,     /// Move ruler cursor to new position. [position]

    CSVCMD_MOVEGRIDCURSOR,      /// Move data grid cursor to new column. [position]

    CSVCMD_MAKEPOSVISIBLE,      /// Move to make passed position visible (for mouse tracking). [position]

    // table contents

    CSVCMD_NEWCELLTEXTS,        /// Recalculate splits and cell texts. [-]

    CSVCMD_UPDATECELLTEXTS,     /// Update cell texts with current split settings. [-]

    CSVCMD_SETCOLUMNTYPE,       /// Change data type of selected columns. [column type]

    CSVCMD_EXPORTCOLUMNTYPE,    /// Send selected column type to external controls. [-]

    CSVCMD_SETFIRSTIMPORTLINE,  /// Set number of first imported line. [line index]

    // splits

    CSVCMD_INSERTSPLIT,         /// Insert a split. [position]

    CSVCMD_REMOVESPLIT,         /// Remove a split. [position]

    CSVCMD_TOGGLESPLIT,         /// Inserts or removes a split. [position]

    CSVCMD_MOVESPLIT,           /// Move a split. [old position, new position]

    CSVCMD_REMOVEALLSPLITS      /// Remove all splits. [-]

};

/** Data for a CSV control command. The stored position data is always character based,

    it's never a column index (required for internal consistency). */

class ScCsvCmd

{

private:

    ScCsvCmdType                meType;         /// The command.

    sal_Int32                   mnParam1;       /// First parameter.

    sal_Int32                   mnParam2;       /// Second parameter.

public:

    explicit             ScCsvCmd() : meType( CSVCMD_NONE ),

                                    mnParam1( CSV_POS_INVALID ), mnParam2( CSV_POS_INVALID ) {}

    inline void                 Set( ScCsvCmdType eType, sal_Int32 nParam1, sal_Int32 nParam2 );

    ScCsvCmdType         GetType() const     { return meType; }

    sal_Int32            GetParam1() const   { return mnParam1; }

    sal_Int32            GetParam2() const   { return mnParam2; }

};

inline void ScCsvCmd::Set( ScCsvCmdType eType, sal_Int32 nParam1, sal_Int32 nParam2 )

{

    meType = eType; mnParam1 = nParam1; mnParam2 = nParam2;

}

/** Base class for the CSV ruler and the data grid control. Implements command handling. */

class SAL_DLLPUBLIC_RTTI ScCsvControl : public weld::CustomWidgetController

{

private:

    Link<ScCsvControl&,void>    maCmdHdl;           /// External command handler.

    ScCsvCmd                    maCmd;              /// Data of last command.

    const ScCsvLayoutData&      mrData;             /// Shared layout data.

    bool                        mbValidGfx;         /// Content of virtual devices valid?

protected:

    rtl::Reference<ScAccessibleCsvControl> mxAccessible; /// Reference to the accessible implementation object.

public:

    explicit                    ScCsvControl(const ScCsvLayoutData& rData);

    virtual                     ~ScCsvControl() override;

    // event handling ---------------------------------------------------------

    virtual void                GetFocus() override;

    virtual void                LoseFocus() override;

    /** Sends a GetFocus or LoseFocus event to the accessibility object. */

    void                        AccSendFocusEvent( bool bFocused );

    /** Sends a caret changed event to the accessibility object. */

    void                        AccSendCaretEvent();

    /** Sends a visible area changed event to the accessibility object. */

    void                        AccSendVisibleEvent();

    /** Sends a selection changed event to the accessibility object. */

    void                        AccSendSelectionEvent();

    /** Sends a table model changed event for changed cell contents to the accessibility object. */

    void                        AccSendTableUpdateEvent( sal_uInt32 nFirstColumn, sal_uInt32 nLastColumn, bool bAllRows = true );

    /** Sends a table model changed event for an inserted column to the accessibility object. */

    void                        AccSendInsertColumnEvent( sal_uInt32 nFirstColumn, sal_uInt32 nLastColumn );

    /** Sends a table model changed event for a removed column to the accessibility object. */

    void                        AccSendRemoveColumnEvent( sal_uInt32 nFirstColumn, sal_uInt32 nLastColumn );

    const rtl::Reference<ScAccessibleCsvControl>& GetAccessible() const { return mxAccessible; }

    // repaint helpers --------------------------------------------------------

    /** Sets the graphic invalid (next Redraw() will not use cached graphic). */

    void                 InvalidateGfx() { mbValidGfx = false; }

    /** Sets the graphic valid (next Redraw() will use cached graphic). */

    void                 ValidateGfx() { mbValidGfx = true; }

    /** Returns true, if cached graphic is valid. */

    bool                 IsValidGfx() const { return mbValidGfx; }

    /** Repaints all controls.

        @param bInvalidate  true = invalidates graphics of this control (not all). */

    void                        Repaint( bool bInvalidate = false );

    /** Increases no-repaint counter (controls do not repaint until the last EnableRepaint()). */

    void                        DisableRepaint();

    /** Decreases no-repaint counter and repaints if counter reaches 0. */

    void                        EnableRepaint();

    /** Returns true, if controls will not repaint. */

    bool                 IsNoRepaint() const { return mrData.mnNoRepaint > 0; }

    // command handling -------------------------------------------------------

    /** Sets a new command handler. */

    void                 SetCmdHdl( const Link<ScCsvControl&,void>& rHdl ) { maCmdHdl = rHdl; }

    /** Returns data of the last command. */

    const ScCsvCmd&      GetCmd() const { return maCmd; }

    /** Executes a command by calling command handler. */

    SC_DLLPUBLIC void    Execute(

                                    ScCsvCmdType eType,

                                    sal_Int32 nParam1 = CSV_POS_INVALID,

                                    sal_Int32 nParam2 = CSV_POS_INVALID );

    // layout helpers ---------------------------------------------------------

    /** Returns a reference to the current layout data. */

    const ScCsvLayoutData& GetLayoutData() const { return mrData; }

    /** Returns true, if the Right-to-Left layout mode is active. */

    bool                 IsRTL() const { return mrData.mbAppRTL; }

    /** Returns the number of available positions. */

    sal_Int32            GetPosCount() const { return mrData.mnPosCount; }

    /** Returns the number of visible positions. */

    sal_Int32                   GetVisPosCount() const;

    /** Returns the first visible position. */

    sal_Int32            GetFirstVisPos() const { return mrData.mnPosOffset; }

    /** Returns the last visible position. */

    sal_Int32            GetLastVisPos() const { return GetFirstVisPos() + GetVisPosCount(); }

    /** Returns highest possible position for first visible character. */

    sal_Int32                   GetMaxPosOffset() const;

    /** Returns true, if it is allowed to set a split at nPos. */

    bool                        IsValidSplitPos( sal_Int32 nPos ) const;

    /** Returns true, if nPos is an allowed AND visible split position. */

    bool                        IsVisibleSplitPos( sal_Int32 nPos ) const;

    /** Returns the width of the header column. */

    sal_Int32            GetHdrWidth() const { return mrData.mnHdrWidth; }

    /** Returns the width of one character column. */

    sal_Int32            GetCharWidth() const { return mrData.mnCharWidth; }

    /** Returns the start position of the header column. */

    sal_Int32                   GetHdrX() const;

    /** Returns the X position of the first pixel of the data area. */

    sal_Int32                   GetFirstX() const;

    /** Returns the X position of the last pixel of the data area. */

    sal_Int32                   GetLastX() const;

    /** Returns output X coordinate of the specified position. */

    sal_Int32                   GetX( sal_Int32 nPos ) const;

    /** Returns position from output coordinate. */

    sal_Int32                   GetPosFromX( sal_Int32 nX ) const;

    /** Returns the number of data lines. */

    sal_Int32            GetLineCount() const { return mrData.mnLineCount; }

    /** Returns the number of visible lines (including partly visible bottom line). */

    SC_DLLPUBLIC sal_Int32      GetVisLineCount() const;

    /** Returns index of first visible line. */

    sal_Int32            GetFirstVisLine() const { return mrData.mnLineOffset; }

    /** Returns index of last visible line. */

    sal_Int32                   GetLastVisLine() const;

    /** Returns highest possible index for first line. */

    sal_Int32                   GetMaxLineOffset() const;

    /** Returns true, if nLine is a valid line index. */

    bool                        IsValidLine( sal_Int32 nLine ) const;

    /** Returns true, if nLine is a valid and visible line index. */

    bool                        IsVisibleLine( sal_Int32 nLine ) const;

    /** Returns the height of the header line. */

    sal_Int32            GetHdrHeight() const { return mrData.mnHdrHeight; }

    /** Returns the height of one line. */

    sal_Int32            GetLineHeight() const { return mrData.mnLineHeight; }

    /** Returns output Y coordinate of the specified line. */

    sal_Int32                   GetY( sal_Int32 nLine ) const;

    /** Returns line index from output coordinate. */

    sal_Int32                   GetLineFromY( sal_Int32 nY ) const;

    /** Returns the ruler cursor position. */

    sal_Int32            GetRulerCursorPos() const { return mrData.mnPosCursor; }

    /** Returns the data grid cursor position (not column index!). */

    sal_Int32            GetGridCursorPos() const { return mrData.mnColCursor; }

    // static helpers ---------------------------------------------------------

    /** Inverts a rectangle in the specified output device. */

    static void                 ImplInvertRect( OutputDevice& rOutDev, const tools::Rectangle& rRect );

    /** Returns direction code for the keys LEFT, RIGHT, HOME, END.

        @param bHomeEnd  false = ignore HOME and END key. */

    static ScMoveMode           GetHorzDirection( sal_uInt16 nCode, bool bHomeEnd );

    /** Returns direction code for the keys UP, DOWN, HOME, END, PAGE UP, PAGE DOWN.

        @param bHomeEnd  false = ignore HOME and END key. */

    static ScMoveMode           GetVertDirection( sal_uInt16 nCode, bool bHomeEnd );

};

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