//============================================================================
//
//   SSSS    tt          lll  lll
//  SS  SS   tt           ll   ll
//  SS     tttttt  eeee   ll   ll   aaaa
//   SSSS    tt   ee  ee  ll   ll      aa
//      SS   tt   eeeeee  ll   ll   aaaaa  --  "An Atari 2600 VCS Emulator"
//  SS  SS   tt   ee      ll   ll  aa  aa
//   SSSS     ttt  eeeee llll llll  aaaaa
//
// Copyright (c) 1995-2020 by Bradford W. Mott, Stephen Anthony
// and the Stella Team
//
// See the file "License.txt" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================

#ifndef DATA_GRID_WIDGET_HXX
#define DATA_GRID_WIDGET_HXX

class DataGridOpsWidget;
class ScrollBarWidget;
class CommandSender;

#include "Widget.hxx"
#include "EditableWidget.hxx"
#include "Base.hxx"
#include "Rect.hxx"

/* DataGridWidget */
class DataGridWidget : public EditableWidget
{
  public:
    // Commands emitted by this commandsender
    enum {
      kItemDoubleClickedCmd = 'DGdb',
      kItemActivatedCmd     = 'DGac',
      kItemDataChangedCmd   = 'DGch',
      kSelectionChangedCmd  = 'DGsc'
    };

  public:
    DataGridWidget(GuiObject* boss, const GUI::Font& font,
                   int x, int y, int cols, int rows,
                   int colchars, int bits,
                   Common::Base::Fmt format = Common::Base::Fmt::_DEFAULT,
                   bool useScrollbar = false);
    virtual ~DataGridWidget() = default;

    void setList(const IntArray& alist, const IntArray& vlist,
                 const BoolArray& changed);
    /** Convenience method for when the datagrid contains only one value */
    void setList(int a, int v, bool changed);
    void setList(int a, int v); // automatically calculate if changed

    void setEditable(bool editable, bool hiliteBG = true) override;

    void setHiliteList(const BoolArray& hilitelist);
    void setNumRows(int rows);

    /** Set value at current selection point */
    void setSelectedValue(int value);
    /** Set value at given position */
    void setValue(int position, int value);
    /** Set value at given position, do not emit any signals */
    void setValueInternal(int position, int value, bool changed = true);
    /** Set value at given position, manually specifying if the value changed */
    void setValue(int position, int value, bool changed, bool emitSignal = true);

    int getSelectedAddr() const   { return _addrList[_selectedItem]; }
    int getSelectedValue() const  { return _valueList[_selectedItem]; }

    void setRange(int lower, int upper);

    bool wantsFocus() const override { return true; }

    // Account for the extra width of embedded scrollbar
    int getWidth() const override;

    int colWidth() { return _colWidth; }

    void setOpsWidget(DataGridOpsWidget* w) { _opsWidget = w; }

    void setCrossed(bool enable) { _crossGrid = enable; }

  protected:
    void drawWidget(bool hilite) override;

    int findItem(int x, int y);

    void startEditMode() override;
    void endEditMode() override;
    void abortEditMode() override;

    Common::Rect getEditRect() const override;

    void receivedFocusWidget() override;
    void lostFocusWidget() override;

    void handleMouseDown(int x, int y, MouseButton b, int clickCount) override;
    void handleMouseUp(int x, int y, MouseButton b, int clickCount) override;
    void handleMouseWheel(int x, int y, int direction) override;
    void handleMouseEntered() override;
    void handleMouseLeft() override;
    bool handleText(char text) override;
    bool handleKeyDown(StellaKey key, StellaMod mod) override;
    bool handleKeyUp(StellaKey key, StellaMod mod) override;
    void handleCommand(CommandSender* sender, int cmd, int data, int id) override;

  protected:
    int  _rows{0};
    int  _cols{0};
    int  _currentRow{0};
    int  _currentCol{0};
    int  _rowHeight{0};
    int  _colWidth{0};
    int  _bits{0};
    int  _lowerBound{0};
    int  _upperBound{0};
    bool _crossGrid{false};

    Common::Base::Fmt _base;

    IntArray    _addrList;
    IntArray    _valueList;
    StringList  _valueStringList;
    BoolArray   _changedList;
    BoolArray   _hiliteList;

    bool      _editMode{false};
    int       _selectedItem{0};
    StellaKey _currentKeyDown{KBDK_UNKNOWN};
    string    _backupString;

    DataGridOpsWidget* _opsWidget{nullptr};
    ScrollBarWidget* _scrollBar{nullptr};

  private:
    /** Common operations on the currently selected cell */
    void negateCell();
    void invertCell();
    void decrementCell();
    void incrementCell();
    void lshiftCell();
    void rshiftCell();
    void zeroCell();

    void enableEditMode(bool state) { _editMode = state; }

  private:
    // Following constructors and assignment operators not supported
    DataGridWidget() = delete;
    DataGridWidget(const DataGridWidget&) = delete;
    DataGridWidget(DataGridWidget&&) = delete;
    DataGridWidget& operator=(const DataGridWidget&) = delete;
    DataGridWidget& operator=(DataGridWidget&&) = delete;
};

#endif
