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

namespace AIMS.OremrUserControl
{
    public class CalendarColumn : DataGridViewColumn
    {
        private bool showUpDown = true;
        public bool ShowUpDown
        {
            get
            {
                return showUpDown;
            }
            set
            {
                showUpDown = value;
            }
        }

        public CalendarColumn()

            : base(new CalendarCell())
        {
        }

        public override DataGridViewCell CellTemplate
        {
            get
            {
                return base.CellTemplate;
            }
            set
            {
                // Ensure that the cell used for the template is a CalendarCell. 
                if (value != null && !value.GetType().IsAssignableFrom(typeof(CalendarCell)))
                {
                    //PublicMethod.WriteLog(new Exception("Must be a CalendarCell"));
                }
                base.CellTemplate = value;
            }
        }
    }

    public class CalendarCell : DataGridViewTextBoxCell
    {
        public CalendarCell()
            : base()
        {
            // Use the short date format.
            this.Style.Format = "           ";//MM-dd hh:mm
        }

        public override void InitializeEditingControl(int rowIndex, object initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
        {
            // Set the value of the editing control to the current cell value.
            base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);

            CalendarEditingControl ctl = DataGridView.EditingControl as CalendarEditingControl;
            if (this.Value == null)
            {
                this.Value = DateTime.Now;
                this.Style.Format = "HH:mm";
                this.Tag = this.Value;
                ctl.Format = DateTimePickerFormat.Custom;
                ctl.CustomFormat = dataGridViewCellStyle.Format;
            }
            else if (this.Value.ToString() != "")
            {
                try
                {
                    ctl.Value = Convert.ToDateTime(this.Value);
                    ctl.Tag = ctl.Value;
                }
                catch (Exception)
                {
                }
                this.Style.Format = "HH:mm";
                ctl.Format = DateTimePickerFormat.Custom;
                ctl.CustomFormat = dataGridViewCellStyle.Format;
            }
            else
            {
                //this.Value = null;
                this.Style.Format = "           ";
            }
            ctl.ValueChanged += new EventHandler(ctl_ValueChanged);
            ctl.Leave += (s, e) =>
            {
                this.Style.Format = "MM-dd HH:mm";
                ((CalendarEditingControl)s).Format = DateTimePickerFormat.Custom;
            };
        }

        void ctl_ValueChanged(object sender, EventArgs e)
        {
            CalendarEditingControl s = sender as CalendarEditingControl;
            if (s.Tag == null || (DateTime.Parse(s.Tag.ToString()).Hour != DateTime.Parse(s.Text).Hour || DateTime.Parse(s.Tag.ToString()).Minute != DateTime.Parse(s.Text).Minute))
                SendKeys.Send("{right}");
            s.Tag = s.Text;
        }

        public override Type EditType
        {
            get
            {
                // Return the type of the editing contol that CalendarCell uses.
                return typeof(CalendarEditingControl);
            }
        }

        public override Type ValueType
        {
            get
            {
                // Return the type of the value that CalendarCell contains.
                return typeof(DateTime);
            }
        }

        public override object DefaultNewRowValue
        {
            get
            {
                // Use the current date and time as the default value.
                return null;// DateTime.Now.ToString("MM-dd HH:mm");
            }
        }

    }

    public class CalendarEditingControl : DateTimePicker, IDataGridViewEditingControl
    {
        DataGridView dataGridView;

        private bool valueChanged = false;

        int rowIndex;

        public CalendarEditingControl()
        {
            //this.ShowUpDown = base.ShowUpDown; 
        }

        // Implements the IDataGridViewEditingControl.EditingControlFormattedValue 
        // property. 
        public object EditingControlFormattedValue
        {
            get
            {
                return this.Value.ToString();
            }
            set
            {
                String newValue = value as String;
                if (newValue != null)
                {
                    this.Value = DateTime.Parse(newValue);
                }
            }
        }

        // Implements the 
        // IDataGridViewEditingControl.GetEditingControlFormattedValue method. 
        public object GetEditingControlFormattedValue(DataGridViewDataErrorContexts context)
        {
            return EditingControlFormattedValue;
        }

        // Implements the 
        // IDataGridViewEditingControl.ApplyCellStyleToEditingControl method. 
        public void ApplyCellStyleToEditingControl(DataGridViewCellStyle dataGridViewCellStyle)
        {
            this.Font = dataGridViewCellStyle.Font;
            this.CalendarForeColor = dataGridViewCellStyle.ForeColor;
            this.CalendarMonthBackground = dataGridViewCellStyle.BackColor;
        }

        // Implements the IDataGridViewEditingControl.EditingControlRowIndex 
        // property. 
        public int EditingControlRowIndex
        {
            get
            {
                return rowIndex;
            }
            set
            {
                rowIndex = value;
            }
        }

        // Implements the IDataGridViewEditingControl.EditingControlWantsInputKey 
        // method. 
        public bool EditingControlWantsInputKey(Keys key, bool dataGridViewWantsInputKey)
        {
            // Let the DateTimePicker handle the keys listed. 
            switch (key & Keys.KeyCode)
            {
                case Keys.Left:
                case Keys.Up:
                case Keys.Down:
                case Keys.Right:
                case Keys.Home:
                case Keys.End:
                case Keys.PageDown:
                case Keys.PageUp:
                    return true;

                default:
                    return false;
            }
        }

        // Implements the IDataGridViewEditingControl.PrepareEditingControlForEdit 
        // method. 
        public void PrepareEditingControlForEdit(bool selectAll)
        {
            // No preparation needs to be done. 
        }

        // Implements the IDataGridViewEditingControl 
        // .RepositionEditingControlOnValueChange property. 
        public bool RepositionEditingControlOnValueChange
        {
            get
            {
                return false;
            }
        }

        // Implements the IDataGridViewEditingControl 
        // .EditingControlDataGridView property. 
        public DataGridView EditingControlDataGridView
        {
            get
            {
                return dataGridView;
            }
            set
            {
                dataGridView = value;
            }
        }

        // Implements the IDataGridViewEditingControl 
        // .EditingControlValueChanged property. 
        public bool EditingControlValueChanged
        {
            get
            {
                return valueChanged;
            }
            set
            {
                valueChanged = value;
            }
        }

        // Implements the IDataGridViewEditingControl 
        // .EditingPanelCursor property. 
        public Cursor EditingPanelCursor
        {
            get
            {
                return base.Cursor;
            }
        }

        protected override void OnValueChanged(EventArgs eventargs)
        {
            // Notify the DataGridView that the contents of the cell 
            // have changed. 
            valueChanged = true;
            this.EditingControlDataGridView.NotifyCurrentCellDirty(true);

            base.OnValueChanged(eventargs);

        }

    }
}