using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using BrightIdeasSoftware;

namespace Deckungsbeitrag
{
	public class MeinFilterMenu : FilterMenuBuilder
	{
    public MeinFilterMenu()
		{
      APPLY_LABEL = "Filter Durchführen";
      CLEAR_ALL_FILTERS_LABEL = "Alle Filter Löschen";
      FILTERING_LABEL = "Filter";
      SELECT_ALL_LABEL = "Alle Auswählen";
      MaxObjectsToConsider = 10000; //Max Anzahl Gruppen die erstellt werden können.

      
    }

    override protected ToolStripMenuItem CreateFilteringMenuItem(OLVColumn column, List<ICluster> clusters)
    {
      ToolStripCheckedListBox checkedList = new ToolStripCheckedListBox();
      checkedList.Tag = column;
      checkedList.AutoSize = false;
      checkedList.Size = new System.Drawing.Size(150, 200);
      foreach (ICluster cluster in clusters)
        checkedList.AddItem(cluster, column.ValuesChosenForFiltering.Contains(cluster.ClusterKey));
      if (!String.IsNullOrEmpty(SELECT_ALL_LABEL))
      {
        int checkedCount = checkedList.CheckedItems.Count;
        if (checkedCount == 0)
          checkedList.AddItem(SELECT_ALL_LABEL, CheckState.Unchecked);
        else
          checkedList.AddItem(SELECT_ALL_LABEL, checkedCount == clusters.Count ? CheckState.Checked : CheckState.Indeterminate);
      }
      checkedList.ItemCheck += new ItemCheckEventHandler(HandleItemCheckedWrapped);

      
      ToolStripMenuItem clearAll = new ToolStripMenuItem(CLEAR_ALL_FILTERS_LABEL, ClearFilteringImage, delegate (object sender, EventArgs args) {
        this.ClearAllFilters(column);
      });
      ToolStripMenuItem apply = new ToolStripMenuItem(APPLY_LABEL, FilteringImage, delegate (object sender, EventArgs args) {
        this.EnactFilter(checkedList, column);
      });
      ToolStripMenuItem subMenu = new ToolStripMenuItem(FILTERING_LABEL, null, new ToolStripItem[] {
                clearAll, new ToolStripSeparator(), checkedList, apply });
      return subMenu;
    }

		

		private void HandleItemCheckedWrapped(object sender, ItemCheckEventArgs e)
    {
      if (alreadyInHandleItemChecked)
        return;

      try
      {
        alreadyInHandleItemChecked = true;
        this.HandleItemChecked(sender, e);
      }
      finally
      {
        alreadyInHandleItemChecked = false;
      }
    }
    bool alreadyInHandleItemChecked = false;
    
  }
}