/* 
 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; version 2 of the
 * License.
 * 
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301  USA
 */

#ifndef __ICON_MANAGER_H__
#define __ICON_MANAGER_H__

using namespace System;
using namespace System::Drawing;
using namespace System::Collections::Generic;
using namespace System::ComponentModel;
using namespace System::Windows::Forms;

namespace MySQL {
  namespace Grt {
    typedef int IconId;

    public enum class IconSize
    {
      Icon11 = 11,
      Icon12 = 12,
      Icon16 = 16,
      Icon24 = 24,
      Icon32 = 32,
      Icon48 = 48,
      Icon64 = 64
    };

    public ref class GrtIconManager 
    {
    private:
      static GrtIconManager^ _grtIconManager = nullptr;

      ImageList^ imageList16;
      ImageList^ imageList24;
      ImageList^ imageList32;
      ImageList^ imageList48;

      Dictionary<int, Bitmap^>^ icon_cache;

      // Hide constructor
      GrtIconManager()
      {
        icon_cache = gcnew Dictionary<int, Bitmap^>();
        inner = ::bec::IconManager::get_instance();

        imageList16 = gcnew ImageList();
        imageList16->ColorDepth = ColorDepth::Depth32Bit;
        imageList16->ImageSize = System::Drawing::Size(16, 16);
        imageList24 = gcnew ImageList();
        imageList24->ColorDepth = ColorDepth::Depth32Bit;
        imageList24->ImageSize = System::Drawing::Size(24, 24);
        imageList32 = gcnew ImageList();
        imageList32->ColorDepth = ColorDepth::Depth32Bit;
        imageList32->ImageSize = System::Drawing::Size(32, 32);
        imageList48 = gcnew ImageList();
        imageList48->ColorDepth = ColorDepth::Depth32Bit;
        imageList48->ImageSize = System::Drawing::Size(48, 48);
      }

    protected:

      // Inner class
      ::bec::IconManager *inner;

    public:
      inline ::bec::IconManager *get_unmanaged_object()
      { return inner; }

      // Singleton class.
      static GrtIconManager^ get_instance()
      {
        if (_grtIconManager == nullptr)
          _grtIconManager = gcnew GrtIconManager();

        return _grtIconManager;
      }

      IconId get_icon_id(String^ icon_file)
      { return inner->get_icon_id(NativeToCppString(icon_file)); }

      String^ get_icon_file(IconId icon)
      { return CppStringToNative(inner->get_icon_file(icon)); }

      String^ get_icon_path(IconId icon)
      { return CppStringToNative(inner->get_icon_path(icon)); }

      void add_search_path(String^ path)
      { inner->add_search_path(NativeToCppString(path)); }

      Bitmap^ get_icon(IconId icon)
      {
        if (icon == 0)
          return nullptr;
        else if (icon_cache->ContainsKey(icon))
          return icon_cache[icon];
        else
        {
          String^ path = get_icon_path(icon);
          Bitmap^ img = nullptr;

          if (path->CompareTo("") != 0)
          {
            img = gcnew System::Drawing::Bitmap(path);

            icon_cache->Add(icon, img);
          }

          return img;
        }
      }

      int add_icon_to_imagelist(IconId iconId, IconSize iconSize)
      {        
        ImageList^ imageList;

        // Choose the correct ImageList
        switch (iconSize)
        {
        case IconSize::Icon16:
          imageList = imageList16;
          break;
        case IconSize::Icon24:
          imageList = imageList24;
          break;
        case IconSize::Icon32:
          imageList = imageList32;
          break;
        default:
          imageList = imageList48;
          break;
        }

        // Check if the icon is in the ImageList already
        int index = imageList->Images->IndexOfKey(System::Convert::ToString(iconId));
        if (index > -1)
          return index;
        else
        {
          // If not, load the image and add it to the ImageList
          Bitmap^ img = get_icon(iconId);

          if (img != nullptr && imageList->ImageSize.Width == img->Width)
          {            
            MySQL::Utilities::ImageListHelper::Add(img, imageList);
            MySQL::Utilities::ImageListHelper::RestoreImageInfo(imageList);

            index = imageList->Images->Count - 1;
            imageList->Images->SetKeyName(index, System::Convert::ToString(iconId));

            return index;
          }
          else
            return -1;
        }
      }

      int add_icon_to_imagelist(IconId iconId)
      {
        Bitmap^ img = get_icon(iconId);
        IconSize iconSize= IconSize::Icon48;

        if (img != nullptr)
        {
          if (img->Width == 16)
            iconSize= IconSize::Icon16;
          else if (img->Width == 24)
            iconSize= IconSize::Icon24;
          else if (img->Width == 32)
            iconSize= IconSize::Icon32;

          return add_icon_to_imagelist(iconId, iconSize);
        }
        else
          return -1;
      }

      property static ImageList^ ImageList16
      {
        ImageList^ get() { return get_instance()->imageList16; }
      }

      property static ImageList^ ImageList24
      {
        ImageList^ get() { return get_instance()->imageList24; }
      }

      property static ImageList^ ImageList32
      {
        ImageList^ get() { return get_instance()->imageList32; }
      }

      property static ImageList^ ImageList48
      {
        ImageList^ get() { return get_instance()->imageList48; }
      }
    };
  } // namespace Grt
} // namespace MySQL

#endif // __ICON_MANAGER_H__