using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace HeuristicLab.OKB.AlgorithmHost {
  public partial class SelectItemDialog : Form {

    public object Item { get; private set; }

    public SelectItemDialog() {
      InitializeComponent();
      itemsListView.SmallImageList = new ImageList();      
    }

    private Dictionary<string, ListViewGroup> groups = new Dictionary<string, ListViewGroup>();

    public void Clear() {
      itemsListView.Clear();
      itemsListView.Groups.Clear();
      groups.Clear();
      itemsListView.SmallImageList = new ImageList();
    }

    public void AddItem(string name, string description, string groupName, object o, Image icon) {
      ListViewGroup group = null;
      if (groupName != null) {
        groups.TryGetValue(groupName, out group);
        if (group == null) {
          group = new ListViewGroup(groupName, groupName);          
          groups[groupName] = group;
          itemsListView.Groups.Add(group);
        }
      }
      ListViewItem item;
      if (group != null)
        item = new ListViewItem(new string[] { name, description }, group);
      else
        item = new ListViewItem(new string[] { name, description });
      if (icon != null) {
        itemsListView.SmallImageList.Images.Add(icon);
        item.ImageIndex = itemsListView.SmallImageList.Images.Count - 1;            
      }
      item.Tag = o;
      itemsListView.Items.Add(item);            
    }

    private void SelectItemDialog_Shown(object sender, EventArgs e) {
      Item = null;
      DialogResult = DialogResult.None;
    }

    private void itemsListView_SelectedIndexChanged(object sender, EventArgs e) {
      okButton.Enabled = itemsListView.SelectedItems.Count == 1;
    }

    private void okButton_Click(object sender, EventArgs e) {
      if (itemsListView.SelectedItems.Count == 1) {
        Item = itemsListView.SelectedItems[0].Tag;
        DialogResult = DialogResult.OK;
        Close();
      }
    }

    private void cancelButton_Click(object sender, EventArgs e) {
      DialogResult = DialogResult.Cancel;
      Close();
    }

    private void itemsListView_DoubleClick(object sender, EventArgs e) {
      if (itemsListView.SelectedItems.Count == 1) {
        Item = itemsListView.SelectedItems[0].Tag;
        DialogResult = DialogResult.OK;
        Close();
      }
    }    

  }
}