using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace Sample
{
    public partial class RandomAccessSettingPanel : UserControl
    {
        #region Enums

        private enum RandomDataTypes
        {
            /// <summary>
            /// Integer type
            /// </summary>
            W,
            /// <summary>
            /// Long integer type
            /// </summary>
            L,
            /// <summary>
            /// 4-precision integer type
            /// </summary>
            Q,
            /// <summary>
            /// Single precision real type
            /// </summary>
            F,
            /// <summary>
            /// Double precision real type
            /// </summary>
            D,
        }

        #endregion

        #region Consts

        /// <summary>
        /// Maximum address number at 16 bits
        /// </summary>
        private const UInt64 SIXTEEN_MAXADDRESSNO = 65535;

        /// <summary>
        /// Maximum address number at 32 bits
        /// </summary>
        private const UInt64 THIRTYTWO_MAXADDRESSNO = 4294967295;

        #endregion

        #region Feilds

        private bool isHex = false;

        #endregion

        #region Constructor

        public RandomAccessSettingPanel()
        {
            InitializeComponent();

            this.UpdateRegisterInfo(Bits.SixteenBit);
            this.vtDataTypeComboBox.DataSource = Enum.GetValues(typeof(VTDataTypes));
            this.dataTypeComboBox.DataSource = Enum.GetValues(typeof(RandomDataTypes));
            this.UpdateVTDataType();

            foreach (ColumnHeader columnHeader in addedRegistListView.Columns)
            {
                columnHeader.Width = -2;
            }
        }

        #endregion

        #region Event

        /// <summary>
        /// When the add button is pressed
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void addButton_Click(object sender, EventArgs e)
        {
            String addressNoString = String.Empty;
            if (isHex)
            {
                addressNoString = String.Format("{0:X}", Convert.ToUInt64(this.addressNoNumericUpDown.Value));
            }
            else
            {
                addressNoString = this.addressNoNumericUpDown.Value.ToString();
            }
            String referenceString = String.Format("{0}{1}{2}",
                                                  this.registerTypeComboBox.SelectedValue.ToString(),
                                                  this.dataTypeComboBox.SelectedValue.ToString(),
                                                  addressNoString);


            String[] item = { referenceString, this.vtDataTypeComboBox.SelectedValue.ToString() };

            this.addedRegistListView.Items.Add(new ListViewItem(item));
        }

        private void deleteButton_Click(object sender, EventArgs e)
        {
            if (this.addedRegistListView.SelectedItems.Count > 0)
            {
                this.addedRegistListView.Items.Remove(this.addedRegistListView.SelectedItems[0]);
            }
            else
            {
                if (this.addedRegistListView.Items.Count > 0)
                {
                    this.addedRegistListView.Items.Remove(this.addedRegistListView.Items[this.addedRegistListView.Items.Count - 1]);
                }
                
            }
        }

        private void dataTypeComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            this.UpdateVTDataType();
        }
        private void registerTypeComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            this.UpdateHexDecimal();
        }
        
        #endregion

        #region Methods

        public String GetOptionString()
        {
            String optionString = String.Empty;
            String referenceString = String.Empty;
            String vtDataTypeString = String.Empty;

            bool isFirst = true;

            if (this.addedRegistListView.Items.Count > 1)
            {
                foreach (ListViewItem item in this.addedRegistListView.Items)
                {
                    bool isVTDataType = false;
                    if (isFirst)
                    {
                        foreach (ListViewItem.ListViewSubItem subItem in item.SubItems)
                        {
                            if (!isVTDataType)
                            {
                                referenceString += subItem.Text;
                                isVTDataType = true;
                            }
                            else
                            {
                                vtDataTypeString += subItem.Text;
                            }
                        }
                        isFirst = false;
                    }
                    else
                    {
                        foreach (ListViewItem.ListViewSubItem subItem in item.SubItems)
                        {
                            if (!isVTDataType)
                            {
                                referenceString += ":";
                                referenceString += subItem.Text;
                                isVTDataType = true;
                            }
                            else
                            {
                                vtDataTypeString += ":";
                                vtDataTypeString += subItem.Text;
                            }
                        }
                    }
                }
            }

            optionString = String.Format("Reference={0},VT={1}",
                                                referenceString,
                                                vtDataTypeString);
            return optionString;
        }

        /// <summary>
        /// Number of array elements
        /// </summary>
        /// <returns></returns>
        public UInt64 GetElementCount()
        {
            return Convert.ToUInt64(this.addedRegistListView.Items.Count);
        }

        /// <summary>
        /// Number of array elements
        /// </summary>
        /// <returns></returns>
        public List<string> GetVtDataTypeList()
        {
            List<string> list = new List<string>();
            foreach (ListViewItem item in this.addedRegistListView.Items)
            {
                bool isVTDataType = false;
                foreach (ListViewItem.ListViewSubItem subItem in item.SubItems)
                {
                    if (!isVTDataType)
                    {
                        isVTDataType = true;
                    }
                    else
                    {
                        list.Add(subItem.Text);
                    }
                }
            }

            return list;
        }

        /// <summary>
        /// Update register type according to address capacity
        /// </summary>
        /// <param name="bits">Address capacity</param>
        public void UpdateRegisterInfo(Bits bits)
        {
            if (bits == Bits.SixteenBit)
            {
                this.registerTypeComboBox.DataSource = Enum.GetValues(typeof(SixTeenRegisterTypes));
                this.addressNoNumericUpDown.Maximum = SIXTEEN_MAXADDRESSNO;
            }
            else
            {
                this.registerTypeComboBox.DataSource = Enum.GetValues(typeof(ThirtyTwoRegisterTypes));
                this.addressNoNumericUpDown.Maximum = THIRTYTWO_MAXADDRESSNO;
            }
        }

        /// <summary>
        /// Update hexadecimal number of address number
        /// </summary>
        private void UpdateHexDecimal()
        {
            if (this.registerTypeComboBox.SelectedValue.GetType() == typeof(SixTeenRegisterTypes))
            {
                switch (this.registerTypeComboBox.SelectedValue)
                {
                    case SixTeenRegisterTypes.M:
                        this.isHex = false;
                        this.addressNoNumericUpDown.Hexadecimal = this.isHex;
                        break;
                    case SixTeenRegisterTypes.I:
                        this.isHex = true;
                        this.addressNoNumericUpDown.Hexadecimal = this.isHex;
                        break;
                }
            }
            else
            {
                switch (this.registerTypeComboBox.SelectedValue)
                {
                    case ThirtyTwoRegisterTypes.S:
                    case ThirtyTwoRegisterTypes.M:
                    case ThirtyTwoRegisterTypes.G:
                        this.isHex = false;
                        this.addressNoNumericUpDown.Hexadecimal = this.isHex;
                        break;
                    case ThirtyTwoRegisterTypes.I:
                    case ThirtyTwoRegisterTypes.O:
                        this.isHex = true;
                        this.addressNoNumericUpDown.Hexadecimal = this.isHex;
                        break;
                }
            }
        }

        /// <summary>
        /// Update VT data type according to data type
        /// </summary>
        private void UpdateVTDataType()
        {
            switch (this.dataTypeComboBox.SelectedValue)
            {
                case RandomDataTypes.W:
                    this.vtDataTypeComboBox.SelectedIndex = Convert.ToInt32(VTDataTypes.I2);
                    break;
                case RandomDataTypes.L:
                    this.vtDataTypeComboBox.SelectedIndex = Convert.ToInt32(VTDataTypes.I4);
                    break;
                case RandomDataTypes.Q:
                    this.vtDataTypeComboBox.SelectedIndex = Convert.ToInt32(VTDataTypes.I8);
                    break;
                case RandomDataTypes.F:
                    this.vtDataTypeComboBox.SelectedIndex = Convert.ToInt32(VTDataTypes.R4);
                    break;
                case RandomDataTypes.D:
                    this.vtDataTypeComboBox.SelectedIndex = Convert.ToInt32(VTDataTypes.R8);
                    break;
            }
        }


        #endregion

    }
}