using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using FastReport.Design;
using FastReport.Utils;

namespace FastReport
{
    internal class GroupHeaderBandMenu : HeaderFooterBandBaseMenu
    {
        private SelectedObjectCollection selection;
        public ContextMenuItem miKeepTogether;
        public ContextMenuItem miResetPageNumber;

        private List<GroupHeaderBand> ModifyList
        {
            get
            {
                List<GroupHeaderBand> list = new List<GroupHeaderBand>();
                foreach (Base c in selection)
                {
                    if (c is GroupHeaderBand && !c.HasRestriction(Restrictions.DontModify))
                        list.Add(c as GroupHeaderBand);
                }
                return list;
            }
        }

        private void miKeepTogether_Click(object sender, EventArgs e)
        {
            foreach (GroupHeaderBand band in ModifyList)
            {
                band.KeepTogether = miKeepTogether.Checked;
            }
            Change();
        }

        private void miResetPageNumber_Click(object sender, EventArgs e)
        {
            foreach (GroupHeaderBand band in ModifyList)
            {
                band.ResetPageNumber = miResetPageNumber.Checked;
            }
            Change();
        }

        public GroupHeaderBandMenu(Designer designer) : base(designer)
        {
            selection = Designer.SelectedObjects;

            miKeepTogether = CreateMenuItem(Res.Get("ComponentMenu,DataBand,KeepTogether"), new EventHandler(miKeepTogether_Click));
            miKeepTogether.CheckOnClick = true;
            miResetPageNumber = CreateMenuItem(Res.Get("ComponentMenu,GroupHeaderBand,ResetPageNumber"), new EventHandler(miResetPageNumber_Click));
            miResetPageNumber.CheckOnClick = true;

            int insertPos = Items.IndexOf(miStartNewPage);
            Items.Insert(insertPos, miKeepTogether);
            Items.Insert(insertPos + 1, miResetPageNumber);

            GroupHeaderBand band = selection[0] as GroupHeaderBand;
            bool enabled = !band.HasRestriction(Restrictions.DontModify);
            miKeepTogether.Enabled = enabled;
            miResetPageNumber.Enabled = enabled;
            miKeepTogether.Checked = band.KeepTogether;
            miResetPageNumber.Checked = band.ResetPageNumber;
        }
    }
}