// <copyright file="FrmDataFormula.cs" company="jindongfang">
// Copyright (c) jindongfang. All rights reserved.
// </copyright>

using DevExpress.XtraEditors;
using DevExpress.XtraEditors.Controls;
using System;
using System.Windows.Forms;
using static WellWorkDataUI.FrmDataViewer;

namespace WellWorkDataUI
{
    /// <summary>
    /// FrmDataFormula
    /// </summary>
    public partial class FrmDataFormula : DevExpress.XtraEditors.XtraForm
    {
        /// <summary>
        /// FormulaData
        /// </summary>
        public FormulaData FormulaData { get; private set; }
        private TextEdit currentEdit;
        private int selectionStart = 0;

        private TextEdit CurrentEdit => this.currentEdit ?? this.textFormula1;

        /// <summary>
        /// Initializes a new instance of the <see cref="FrmDataFormula"/> class.
        /// FrmDataFormula
        /// </summary>
        /// <param name="formulaData">formulaData</param>
        public FrmDataFormula(FormulaData formulaData)
        {
            this.InitializeComponent();
            this.FormulaData = formulaData;

            this.listBoxVariable.DataSource = formulaData.ColumnList;

            foreach (var item in formulaData.ColumnList)
            {
                this.comboFormula1.Properties.Items.Add(new ImageComboBoxItem(item.Caption, item));
                this.comboFormula2.Properties.Items.Add(new ImageComboBoxItem(item.Caption, item));
                this.comboFormula3.Properties.Items.Add(new ImageComboBoxItem(item.Caption, item));
                this.comboFormula4.Properties.Items.Add(new ImageComboBoxItem(item.Caption, item));
            }

            this.FormulaData = formulaData;
        }

        private void textEdit_Enter(object sender, EventArgs e)
        {
            this.currentEdit = sender as TextEdit;
        }

        private void textEdit_Leave(object sender, EventArgs e)
        {
            this.selectionStart = (sender as TextEdit).SelectionStart;
        }

        private void listBoxOp_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (this.listBoxOp.HotItemIndex >= 0)
            {
                var op = this.listBoxOp.Items[this.listBoxOp.HotItemIndex].ToString();
                this.CurrentEdit.Text = this.CurrentEdit.Text.Insert(this.selectionStart, op);
                this.CurrentEdit.Focus();
                this.selectionStart += op.Length;
                this.CurrentEdit.SelectionStart = this.selectionStart;
            }
        }

        private void listBoxVariable_CustomItemDisplayText(object sender, CustomItemDisplayTextEventArgs e)
        {
            if (e.Item is ColumnData cd)
            {
                e.DisplayText = $"{cd.Variable}: {cd.Caption}";
            }
        }

        private void listBoxVariable_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (this.listBoxVariable.HotItemIndex >= 0)
            {
                var cd = this.listBoxVariable.GetItem(this.listBoxVariable.HotItemIndex) as ColumnData;
                this.CurrentEdit.Text = this.CurrentEdit.Text.Insert(this.selectionStart, cd.Variable);
                this.CurrentEdit.Focus();
                this.selectionStart += cd.Variable.Length;
                this.CurrentEdit.SelectionStart = this.selectionStart;
            }
        }

        private void comboFormula_ButtonClick(object sender, ButtonPressedEventArgs e)
        {
            if (e.Button.Kind == ButtonPredefines.Delete)
            {
                (sender as ImageComboBoxEdit).EditValue = null;
            }
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void btnOK_Click(object sender, EventArgs e)
        {
            this.CaclFormula(this.comboFormula1, this.textFormula1);
            this.CaclFormula(this.comboFormula2, this.textFormula2);
            this.CaclFormula(this.comboFormula3, this.textFormula3);
            this.CaclFormula(this.comboFormula4, this.textFormula4);

            this.FormulaData.RefreshView();

            MessageBox.Show("计算完成!");
        }

        private void CaclFormula(ImageComboBoxEdit combo, TextEdit text)
        {
            if (combo.EditValue is ColumnData cd)
            {
                this.FormulaData.CalcFormula(cd, text.Text, this.FormulaData.ColumnList);
            }
        }
    }
}