Common-VS2019/SacsMobileXamarin/Xamarin/Forms/Controls/SaxDateTimePicker.cs

using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Utils;
using Sarand.Net.Mobile.Xamarin.Forms.Layouts;
using Sarand.Net.Mobile.Xamarin.Forms.Views;
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Text;
using Xamarin.Forms;

namespace Sarand.Net.Mobile.Xamarin.Forms.Controls
{
	//=======================================================================
	public class SaxDateTimePicker : SaxContentView
	{
		//-------------------------------------------------------------------
		// Definitions.
		// Control layout.
		private SaxStackLayout layoutControl = new SaxStackLayout() { Orientation = StackOrientation.Horizontal };
		private SaxDatePicker pickerDate = new SaxDatePicker();
		private SaxLabel labelTimePrefix = new SaxLabel();
		private SaxTimePicker pickerTime = new SaxTimePicker();

		//-------------------------------------------------------------------
		// Data members.

		//-------------------------------------------------------------------
		// Construction.
		public SaxDateTimePicker ()
		{
			DefaultFontSize = pickerDate.FontSize;

			// Configure components.
			Content = layoutControl;
			layoutControl.Children.Add(pickerDate);
			layoutControl.Children.Add(pickerTime);

			// Control events.
			pickerDate.DateSelected += PickerDate_DateSelected;
			pickerTime.TimeChanged += PickerTime_TimeChanged;
		}

		//-------------------------------------------------------------------
		// Properties.
		public string DateFormat
		{
			get { return pickerDate.Format; }
			set
			{
				if (pickerDate.Format.Equals(value)) return;
				pickerDate.Format = value;
			}
		}
		public DateTime MinimumDate
		{
			get { return pickerDate.MinimumDate; }
			set { pickerDate.MinimumDate = value; }
		}
		public DateTime MaximumDate
		{
			get { return pickerDate.MaximumDate; }
			set { pickerDate.MaximumDate = value; }
		}
		public string TimeFormat
		{
			get { return pickerTime.Format; }
			set
			{
				if (pickerTime.Format.Equals(value)) return;
				pickerTime.Format = value;
			}
		}
		// Control value.
		public DateTime DateTime
		{
			get { return pickerDate.Date.Date + pickerTime.Time; }
			set
			{
				if (DateTime.CompareTo(value) == 0) return;
				pickerDate.Date = value.Date;
				pickerTime.Time = value - value.Date;
			}
		}
		public String DateTimeDelim { get; set; } = " ";
		public String FormattedDateTime { get { return pickerDate.FormattedDate + DateTimeDelim + pickerTime.FormattedTime; } }
		// Styling.
		public double DefaultFontSize { get; }
		public double FontSize
		{
			get { return pickerDate.FontSize; }
			set { if (pickerDate.FontSize == value) return; pickerDate.FontSize = value; pickerTime.FontSize = value; labelTimePrefix.FontSize = value; }
		}
		/// <summary>Amount of space between date and time pickers.</summary>
		public double ControlSpacing
		{
			get { return layoutControl.Spacing; }
			set { if (layoutControl.Spacing == value) return; layoutControl.Spacing = value; }
		}
		public String TimePickerPrefixText
		{
			get { return labelTimePrefix.Text; }
			set { value = StringUtil.TrimAll(value); if (labelTimePrefix.Text.Equals(value)) return; labelTimePrefix.Text = value; ConfigureComponents(); }
		}

		//-------------------------------------------------------------------
		//              C o n f i g u r e   C o m p o n e n t s
		//-------------------------------------------------------------------
		protected override void ConfigureComponents ()
		{
			base.ConfigureComponents();

			// Time Picker prefix label text.
			if (!StringUtil.IsEmpty(TimePickerPrefixText))
			{
				// Label has text - ensure label is in the layout.
				if (!layoutControl.Children.Contains(labelTimePrefix))
				{
					// Label will be inserted before the time picker.
					int insertIdx = layoutControl.Children.IndexOf(pickerTime);
					layoutControl.Children.Insert(insertIdx, labelTimePrefix);
				}
			}
			else
			{
				// Blank label text - remove label from layout.
				if (layoutControl.Children.Contains(labelTimePrefix))
					layoutControl.Children.Remove(labelTimePrefix);
			}
		}

		//-------------------------------------------------------------------
		//                  C o n t r o l   A c t i v i t y
		//-------------------------------------------------------------------
		protected override void SetControlActivity ()
		{
			base.SetControlActivity();
		}
		protected override void SetControlsReadOnly ()
		{
			base.SetControlsReadOnly();
		}

		//-------------------------------------------------------------------
		//                    C o n t r o l   E v e n t s
		//-------------------------------------------------------------------
		private void PickerDate_DateSelected (object sender, DateChangedEventArgs e)
		{
			if (DateSelected != null) DateSelected.Invoke(sender, e);
		}
		public event EventHandler<DateChangedEventArgs> DateSelected;
		//-------------------------------------------------------------------
		private void PickerTime_TimeChanged (object sender, SaxTimePicker.TimeChangedEventArgs e)
		{
			if (TimeChanged != null) TimeChanged.Invoke(sender, e);
		}
		public event EventHandler<SaxTimePicker.TimeChangedEventArgs> TimeChanged;

		//-------------------------------------------------------------------
	}
	//=======================================================================
}