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

namespace FastReport
{
    internal class DataBandMenu : BandBaseMenu
    {
        private SelectedObjectCollection selection;
        public ContextMenuItem miAddDetailDataBand;
        public ContextMenuItem miKeepTogether;
        public ContextMenuItem miKeepDetail;
        public ContextMenuItem miColumnsEditor;

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

        private void miAddDetailDataBand_Click(object sender, EventArgs e)
        {
            DataBand band = selection[0] as DataBand;
            DataBand detailData = new DataBand();
            detailData.Parent = band;
            detailData.CreateUniqueName();
            detailData.Height = detailData.GetPreferredSize().Height;

            Change();
        }

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

        private void miKeepDetail_Click(object sender, EventArgs e)
        {
            foreach (DataBand band in ModifyList)
            {
                band.KeepDetail = miKeepDetail.Checked;
            }
            Change();
        }

        private void miColumnsEditor_Click(object sender, EventArgs e)
        {
            foreach (DataBand band in ModifyList)
            {
                band.InvokeColumnsEditor();
            }
            Change();
        }

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

            miAddDetailDataBand = CreateMenuItem(Res.Get("ComponentMenu,DataBand,AddDetailDataBand"), miAddDetailDataBand_Click);
            miKeepTogether = CreateMenuItem(Res.Get("ComponentMenu,DataBand,KeepTogether"), miKeepTogether_Click);
            miKeepTogether.BeginGroup = true;
            miKeepTogether.CheckOnClick = true;
            miKeepDetail = CreateMenuItem(Res.Get("ComponentMenu,DataBand,KeepDetail"), miKeepDetail_Click);
            miKeepDetail.CheckOnClick = true;
            miColumnsEditor = CreateMenuItem(Res.Get("ComponentMenu,DataBand,ColumnsEditor"), miColumnsEditor_Click);
            miColumnsEditor.CheckOnClick = true;

            miStartNewPage.BeginGroup = false;

            int insertPos = Items.IndexOf(miAddChildBand);
            Items.Insert(insertPos + 1, miAddDetailDataBand);
            insertPos = Items.IndexOf(miStartNewPage);
            Items.Insert(insertPos, miKeepTogether);
            Items.Insert(insertPos + 1, miKeepDetail);
            insertPos = Items.IndexOf(miHyperlink);
            Items.Insert(insertPos, miColumnsEditor);

            DataBand band = selection[0] as DataBand;
            bool enabled = !band.HasRestriction(Restrictions.DontModify);
            miAddDetailDataBand.Enabled = enabled && band.Bands.Count == 0;
            miKeepTogether.Enabled = enabled;
            miKeepDetail.Enabled = enabled;
            miKeepTogether.Checked = band.KeepTogether;
            miKeepDetail.Checked = band.KeepDetail;
        }
    }
}