// Copyright 2012 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 

using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.SystemUI;

namespace ContextMenu
{
  public class ScaleThresholds : BaseCommand, ICommandSubType
  {
    private IMapControl3 m_mapControl;
    private long m_subType;

    public ScaleThresholds()
    {

    }
  
    public override void OnClick()
    {
      ILayer layer = (ILayer) m_mapControl.CustomProperty;
      if (m_subType == 1) layer.MaximumScale = m_mapControl.MapScale;
      if (m_subType == 2) layer.MinimumScale = m_mapControl.MapScale;
      if (m_subType == 3)
      {
        layer.MaximumScale = 0;
        layer.MinimumScale = 0;
      }
      m_mapControl.Refresh(esriViewDrawPhase.esriViewGeography,null,null);
    }
  
    public override void OnCreate(object hook)
    {
      m_mapControl = (IMapControl3) hook;
    }
  
    public int GetCount()
    {
      return 3;
    }
  
    public void SetSubType(int SubType)
    {
      m_subType = SubType;
    }
  
    public override string Caption
    {
      get
      {
        if (m_subType == 1) return "Set Maximum Scale";
        else if (m_subType == 2) return "Set Minimum Scale";
        else return "Remove Scale Thresholds";
      }
    }
  
    public override bool Enabled
    {
      get
      {
        bool enabled = true;
        ILayer layer = (ILayer) m_mapControl.CustomProperty;
        
        if (m_subType == 3)
        {
          if ((layer.MaximumScale == 0) & (layer.MinimumScale == 0)) enabled = false;
        }
        return enabled;
      }
    }
  }
}