using System;
using System.Windows.Forms;
using FastReport.Utils;
using FastReport.Data;
using FastReport.Controls;

namespace FastReport.Forms
{
    internal partial class DataBandEditorForm : BaseDialogForm
    {
        private DataBand band;
        private bool firstRun;

        private Report Report
        {
            get { return band.Report; }
        }

        private DataColumnComboBox[] ComboArray
        {
            get { return new DataColumnComboBox[] { cbxSort1, cbxSort2, cbxSort3 }; }
        }

        private RadioButton[] AscArray
        {
            get { return new RadioButton[] { rbSortAsc1, rbSortAsc2, rbSortAsc3 }; }
        }

        private RadioButton[] DescArray
        {
            get { return new RadioButton[] { rbSortDesc1, rbSortDesc2, rbSortDesc3 }; }
        }

        private void FillSort(DataSourceBase dataSource, bool reset)
        {
            SortCollection sort = band.Sort;
            for (int i = 0; i < ComboArray.Length; i++)
            {
                ComboArray[i].Report = Report;
                ComboArray[i].DataSource = dataSource;

                if (i >= sort.Count || reset)
                {
                    ComboArray[i].Text = "";
                    AscArray[i].Checked = true;
                    DescArray[i].Checked = false;
                }
                else
                {
                    ComboArray[i].Text = sort[i].Expression;
                    AscArray[i].Checked = !sort[i].Descending;
                    DescArray[i].Checked = sort[i].Descending;
                }
            }
        }

        private void GetSort()
        {
            band.Sort.Clear();

            for (int i = 0; i < ComboArray.Length; i++)
            {
                if (!String.IsNullOrEmpty(ComboArray[i].Text))
                    band.Sort.Add(new Sort(ComboArray[i].Text, DescArray[i].Checked));
            }
        }

        private void tvDataSource_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if (!firstRun)
            {
                DataSourceBase data = tvDataSource.SelectedNode.Tag as DataSourceBase;
                FillSort(data, true);
            }
            firstRun = false;
        }

        private void tvDataSource_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
        {
            DialogResult = DialogResult.OK;
        }

        private void tbFilter_ButtonClick(object sender, EventArgs e)
        {
            tbFilter.Text = Editors.EditExpression(Report, tbFilter.Text);
        }

        private void DataBandEditorForm_Shown(object sender, EventArgs e)
        {
            tvDataSource.Focus();
        }

        private void DataBandEditorForm_FormClosed(object sender, FormClosedEventArgs e)
        {
            Done();
        }

        private void Init()
        {
            firstRun = true;
            tvDataSource.CreateNodes(band.Report.Dictionary);
            tvDataSource.SelectedItem = band.DataSource == null ? "" : band.DataSource.FullName;
            tvDataSource.Visible = tvDataSource.Nodes.Count > 1;
            lblNoData.Visible = !tvDataSource.Visible;
            FillSort(band.DataSource, false);
            tbFilter.Text = band.Filter;
        }

        private void Done()
        {
            if (DialogResult == DialogResult.OK)
            {
                band.DataSource = tvDataSource.SelectedNode == null ? null : tvDataSource.SelectedNode.Tag as DataSourceBase;
                GetSort();
                band.Filter = tbFilter.Text;
            }
        }

        public override void Localize()
        {
            base.Localize();
            MyRes res = new MyRes("Forms,DataBandEditor");
            Text = res.Get("");
            pnDataSource.Text = res.Get("DataSource");
            lblNoData.Text = res.Get("NoData");
            pnSort.Text = res.Get("Sort");
            lblSort1.Text = res.Get("SortBy");
            lblSort2.Text = res.Get("ThenBy");
            lblSort3.Text = res.Get("ThenBy");
            for (int i = 0; i < AscArray.Length; i++)
            {
                AscArray[i].Text = res.Get("Ascending");
                DescArray[i].Text = res.Get("Descending");
            }

            pnFilter.Text = res.Get("Filter");
            lblFilter.Text = res.Get("Expression");
        }

        public override void UpdateDpiDependencies()
        {
            base.UpdateDpiDependencies();
            tbFilter.Image = GetImage(52);
            tvDataSource.ImageList = GetImages();
            this.MinimumSize = this.LogicalToDevice(new System.Drawing.Size(540, 312));
        }

        public DataBandEditorForm(DataBand band)
        {
            this.band = band;
            CanSaveRestoreState = true;
            InitializeComponent();
            Localize();
            Init();
            UIUtils.CheckRTL(this);
            UpdateDpiDependencies();
        }
    }
}