// -*- Mode: C++; indent-tabs-mode: nil; tab-width: 2 -*-
/*
 * Copyright (C) 2010 Canonical Ltd
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Authored by: Mirco Müller <mirco.mueller@canonical.com>
 * Authored by: Jay Taoko <jay.taoko@canonical.com>
 */

#ifndef QUICKLISTMENUITEM_H
#define QUICKLISTMENUITEM_H

#include <libdbusmenu-glib/menuitem.h>
#include <libdbusmenu-glib/client.h>

#include "Nux/Nux.h"
#include "Nux/View.h"
#include "NuxImage/CairoGraphics.h"

#include <pango/pango.h>
#include <pango/pangocairo.h>

#include "Introspectable.h"

#define ITEM_INDENT_ABS        16
#define ITEM_CORNER_RADIUS_ABS 3
#define ITEM_MARGIN            4

typedef enum
{
  MENUITEM_TYPE_UNKNOWN    = 0,
  MENUITEM_TYPE_LABEL,
  MENUITEM_TYPE_SEPARATOR,
  MENUITEM_TYPE_CHECK,
  MENUITEM_TYPE_RADIO,
} QuicklistMenuItemType;

class QuicklistMenuItem : public nux::View, public Introspectable
{
  public:
    QuicklistMenuItem (DbusmenuMenuitem* item,
                       NUX_FILE_LINE_PROTO);

    QuicklistMenuItem (DbusmenuMenuitem* item,
                       bool              debug,
                       NUX_FILE_LINE_PROTO);

    virtual ~QuicklistMenuItem ();

    void PreLayoutManagement ();

    long PostLayoutManagement (long layoutResult);

    long ProcessEvent (nux::IEvent& event,
                       long         traverseInfo,
                       long         processEventInfo);

    void Draw (nux::GraphicsEngine& gfxContext,
               bool                 forceDraw);

    void DrawContent (nux::GraphicsEngine& gfxContext,
                      bool                 forceDraw);

    void PostDraw (nux::GraphicsEngine& gfxContext,
                   bool                 forceDraw);

    QuicklistMenuItemType GetItemType ();
    
    void ItemActivated ();

    sigc::signal<void, QuicklistMenuItem&> sigChanged;
    sigc::signal<void, QuicklistMenuItem*> sigTextChanged;
    sigc::signal<void, QuicklistMenuItem*> sigColorChanged;
    
    virtual const gchar* GetLabel ();

    virtual bool GetEnabled ();

    virtual bool GetActive ();

    virtual bool GetVisible ();
    
    // Introspection
    const gchar* GetName ();
    void AddProperties (GVariantBuilder *builder);
  protected:
    
    gchar*                _text;
    nux::Color            _textColor;
    int                   _pre_layout_width;
    int                   _pre_layout_height;
    nux::CairoGraphics*   _cairoGraphics;
    
    nux::BaseTexture*     _normalTexture[2];
    nux::BaseTexture*     _prelightTexture[2];
    
    //! Return the size of the text + size of associated radio button or check box
    void GetTextExtents (int &width, int &height);
    void GetTextExtents (const gchar* font, int& width, int& height);
    virtual void UpdateTexture () = 0;
    virtual int CairoSurfaceWidth () = 0;

    void RecvMouseEnter (int x, int y, unsigned long button_flags, unsigned long key_flags);
    void RecvMouseLeave (int x, int y, unsigned long button_flags, unsigned long key_flags);
    void RecvMouseDown (int x, int y, unsigned long button_flags, unsigned long key_flags);
    void RecvMouseUp (int x, int y, unsigned long button_flags, unsigned long key_flags);
    void RecvMouseClick (int x, int y, unsigned long button_flags, unsigned long key_flags);
    void RecvMouseMove (int x, int y, int dx, int dy, unsigned long button_flags, unsigned long key_flags);
    void RecvMouseDrag (int x, int y, int dx, int dy, unsigned long button_flags, unsigned long key_flags);
    
    sigc::signal<void, QuicklistMenuItem*> sigMouseEnter;
    sigc::signal<void, QuicklistMenuItem*> sigMouseLeave;
    sigc::signal<void, QuicklistMenuItem*, int, int> sigMouseReleased;
    sigc::signal<void, QuicklistMenuItem*, int, int> sigMouseClick;
    sigc::signal<void, QuicklistMenuItem*, int, int> sigMouseDrag;
    
    DbusmenuMenuitem* _menuItem;
    QuicklistMenuItemType _item_type;
    
    nux::Color        _color;   //!< Item rendering color factor.
    bool              _debug;
    
    
    bool _prelight;   //!< True when the mouse is over the item.

    void DrawRoundedRectangle (cairo_t* cr,
                               double   aspect,
                               double   x,
                               double   y,
                               double   cornerRadius,
                               double   width,
                               double   height);

    void DrawText (cairo_t*   cr,
                   int        width,
                   int        height,
                   nux::Color color);

    // Introspection
    gchar *_name;
    
    friend class QuicklistView;
};

#endif // QUICKLISTMENUITEM_H