linux-packaging-mono/mcs/class/referencesource/System.Web.DataVisualization/Common/Converters/AxisConverters.cs

//-------------------------------------------------------------
// <copyright company=<3D>Microsoft Corporation<6F>>
//   Copyright <20> Microsoft Corporation. All Rights Reserved.
// </copyright>
//-------------------------------------------------------------
// @owner=alexgor, deliant
//=================================================================
//  File:		AxisConverter.cs
//
//  Namespace:	DataVisualization.Charting.Design
//
//	Classes:	AxisLabelDateValueConverter, AxisCrossingValueConverter
//				AxisMinMaxValueConverter, AxisMinMaxAutoValueConverter,
//				StripLineTitleAngleConverter
//
//  Purpose:	Converters for the Axis object properties.
//
//	Reviewed:	AG - August 7, 2002
//
//===================================================================


#region Used Namespaces

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Globalization;
using System.Reflection;

#if Microsoft_CONTROL
	using System.Windows.Forms.DataVisualization.Charting;
#else
	using System.Web;
	using System.Web.UI;
    using System.Web.UI.DataVisualization.Charting;

	using System.Web.UI.DataVisualization.Charting.Data;
	using System.Web.UI.DataVisualization.Charting.ChartTypes;
#endif

#endregion

#if Microsoft_CONTROL
	namespace System.Windows.Forms.DataVisualization.Charting
#else
	namespace System.Web.UI.DataVisualization.Charting
#endif
{
	/// <summary>
	/// Converts labels, grid and ticks start position to support dates format
	/// </summary>
    internal class AxisLabelDateValueConverter : DoubleConverter
	{
		#region Converter methods

		/// <summary>
		/// Convert Min and Max values to string if step type is set to one of the DateTime type
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <param name="culture">Culture information.</param>
		/// <param name="value">Value to convert.</param>
		/// <param name="destinationType">Convertion destination type.</param>
		/// <returns>Converted object.</returns>
		public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) 
		{  
			if (context != null && context.Instance != null)
			{
				// Convert to string
				if (destinationType == typeof(string)) 
				{
					DateTimeIntervalType	intervalType = DateTimeIntervalType.Auto;
					double					interval = 0;

					// Get IntervalType property using reflection
					PropertyInfo	propertyInfo = context.Instance.GetType().GetProperty("IntervalType");
					if(propertyInfo != null)
					{
						intervalType = (DateTimeIntervalType)propertyInfo.GetValue(context.Instance, null);
					}

					// Get Interval property using reflection
					propertyInfo = context.Instance.GetType().GetProperty("Interval");
					if(propertyInfo != null)
					{
						interval = (double)propertyInfo.GetValue(context.Instance, null);
					}

					// Try to get interval information from the axis
					if(intervalType == DateTimeIntervalType.Auto) 
					{
						// Get object's axis
						Axis	axis = null;
						if(context.Instance is Axis)
						{
							axis = (Axis)context.Instance;
						}
						else
						{
							MethodInfo	methodInfo = context.Instance.GetType().GetMethod("GetAxis");
							if(methodInfo != null)
							{
								// Get axis object
								axis = (Axis)methodInfo.Invoke(context.Instance, null);
							}
						}

						// Get axis value type
						if(axis != null)
						{
							intervalType = axis.GetAxisIntervalType();
						}
					}
						
					// Convert value to date/time string
					if(context.Instance.GetType() != typeof(StripLine) || interval == 0)
					{
						if(intervalType != DateTimeIntervalType.Number && intervalType != DateTimeIntervalType.Auto) 
						{
							// Covert value to date/time
							if(intervalType < DateTimeIntervalType.Hours)
							{
								return DateTime.FromOADate((double)value).ToShortDateString();
							}
							return DateTime.FromOADate((double)value).ToString("g", System.Globalization.CultureInfo.CurrentCulture);
						}
					}
				}
			}
			return base.ConvertTo(context, culture, value, destinationType);
		}

		/// <summary>
		/// Convert Min and Max values from string if step type is set to one of the DateTime type
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <param name="culture">Culture information.</param>
		/// <param name="value">Value to convert from.</param>
		/// <returns>Converted object.</returns>
		public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
		{
			object	result = null;
			bool	convertFromDate = false;
            string stringValue = value as string;

			// If context interface provided check if we are dealing with DateTime values
			if (context != null && context.Instance != null)
			{
				DateTimeIntervalType intervalType = DateTimeIntervalType.Auto;

				// Get intervalType property using reflection
				PropertyInfo	propertyInfo = context.Instance.GetType().GetProperty("intervalType");
				if(propertyInfo != null)
				{
					intervalType = (DateTimeIntervalType)propertyInfo.GetValue(context.Instance, null);
				}
				
				// Try to get interval information from the axis
				if(intervalType == DateTimeIntervalType.Auto) 
				{
					// Get object's axis
					Axis	axis = null;
					if(context.Instance is Axis)
					{
						axis = (Axis)context.Instance;
					}
					else
					{
						MethodInfo	methodInfo = context.Instance.GetType().GetMethod("GetAxis");
						if(methodInfo != null)
						{
							// Get axis object
							axis = (Axis)methodInfo.Invoke(context.Instance, null);
						}
					}

					// Get axis value type
					if(axis != null)
					{
						intervalType = axis.GetAxisIntervalType();
					}
				}

				if (stringValue != null && intervalType != DateTimeIntervalType.Number && intervalType != DateTimeIntervalType.Auto) 
				{
					convertFromDate = true;
				}

			}

			// Try to convert from double string
            try
            {
                result = base.ConvertFrom(context, culture, value);
            }
            catch (ArgumentException)
            {
                result = null;
            }
            catch (NotSupportedException)
            {
                result = null;
            }

			// Try to convert from date/time string
            if (stringValue != null && (convertFromDate || result == null))
            {
                DateTime valueAsDate;
                bool parseSucceed = DateTime.TryParse(stringValue, CultureInfo.InvariantCulture, DateTimeStyles.None, out valueAsDate);

                if (parseSucceed)
                {
                    // Succeded converting from date format
                    return valueAsDate.ToOADate();
                }
            }

			// Call base converter
			return base.ConvertFrom(context, culture, value);
		}

		#endregion
	}

	/// <summary>
	/// Converts crossing property of the axis. 
	/// Possible values: double, date, "Auto", "Min", "Max"
	/// </summary>
    internal class AxisCrossingValueConverter : AxisMinMaxValueConverter
	{
		#region Converter methods

		/// <summary>
		/// Standart values supported - return true.
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Standard values supported.</returns>
		public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
		{
			return true;
		}

		/// <summary>
		/// Standart values are not exclusive - return false
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Non exclusive standard values.</returns>
		public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
		{
			return false;
		}

		/// <summary>
		/// Fill in the list of standart values.
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Standart values collection.</returns>
		public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
		{
			ArrayList values = new ArrayList();
			values.Add(Double.NaN);
			values.Add(Double.MinValue);
			values.Add(Double.MaxValue);

			return new StandardValuesCollection(values);
		}

		/// <summary>
		/// Convert crossing value to string.
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <param name="culture">Culture information.</param>
		/// <param name="value">Value to convert.</param>
		/// <param name="destinationType">Convertion destination type.</param>
		/// <returns>Converted object.</returns>
		public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) 
		{  
			double	doubleValue = (double)value;
			if (destinationType == typeof(string))
			{
				if(Double.IsNaN(doubleValue))
				{
					return Constants.AutoValue;
				}
				else if(doubleValue == Double.MinValue)
				{
					return Constants.MinValue;
				}
				else if(doubleValue == Double.MaxValue)
				{
                    return Constants.MaxValue;
				}
			}

			// Call base class
			return base.ConvertTo(context, culture, value, destinationType);
		}

		/// <summary>
		/// Convert crossing values from string
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <param name="culture">Culture information.</param>
		/// <param name="value">Value to convert from.</param>
		/// <returns>Converted object.</returns>
		public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
		{
			// If converting from string value
            string crossingValue = value as string;
            if (crossingValue != null)
			{
                if (String.Compare(crossingValue, Constants.AutoValue, StringComparison.OrdinalIgnoreCase) == 0)
				{
					return Double.NaN;
				}
                else if (String.Compare(crossingValue, Constants.MinValue, StringComparison.OrdinalIgnoreCase) == 0)
				{
					return Double.MinValue;
				}
                else if (String.Compare(crossingValue, Constants.MaxValue, StringComparison.OrdinalIgnoreCase) == 0)
				{
					return Double.MaxValue;
				}
			}
				
			// Call base converter
			return base.ConvertFrom(context, culture, value);
		}

		#endregion
	}
	
	/// <summary>
	/// Converts min and max properties of the axis depending on the values type
	/// </summary>
    internal class AxisMinMaxValueConverter : DoubleConverter
	{
		#region Converter methods

		/// <summary>
		/// Convert Min and Max values to string if step type is set to one of the DateTime type
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <param name="culture">Culture information.</param>
		/// <param name="value">Value to convert.</param>
		/// <param name="destinationType">Convertion destination type.</param>
		/// <returns>Converted object.</returns>
		public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) 
		{  
			if (context != null && context.Instance != null && context.Instance is Axis)
			{
				Axis axis = (Axis)context.Instance;
				if (destinationType == typeof(string))
				{
                    string strValue = DoubleDateNanValueConverter.ConvertDateTimeToString(
                        (double)value,
                        axis.GetAxisValuesType(),
                        axis.InternalIntervalType);

                    if (strValue != null)
                        return strValue;
				}
			}
			return base.ConvertTo(context, culture, value, destinationType);
		}

		/// <summary>
		/// Convert Min and Max values from string if step type is set to one of the DateTime type
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <param name="culture">Culture information.</param>
		/// <param name="value">Value to convert from.</param>
		/// <returns>Converted object.</returns>
        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
        {
            object result = null;
            bool convertFromDate = false;
            string stringValue = value as string;

            // If context interface provided check if we are dealing with DateTime values
            if (context != null && context.Instance != null && context.Instance is Axis)
            {
                Axis axis = (Axis)context.Instance;

                if (stringValue != null)
                {
                    if (axis.InternalIntervalType == DateTimeIntervalType.Auto)
                    {
                        if (axis.GetAxisValuesType() == ChartValueType.DateTime ||
                            axis.GetAxisValuesType() == ChartValueType.Date ||
                            axis.GetAxisValuesType() == ChartValueType.Time ||
                            axis.GetAxisValuesType() == ChartValueType.DateTimeOffset)
                        {
                            convertFromDate = true;
                        }
                    }
                    else
                    {
                        if (axis.InternalIntervalType != DateTimeIntervalType.Number)
                        {
                            convertFromDate = true;
                        }
                    }
                }
            }

            // Try to convert from double string
            try
            {
                result = base.ConvertFrom(context, culture, value);
            }
            catch (ArgumentException)
            {
                result = null;
            }
            catch (NotSupportedException)
            {
                result = null;
            }

            // Try to convert from date/time string
            if (stringValue != null && (convertFromDate || result == null))
            {
                DateTime valueAsDate;
                bool parseSucceed = DateTime.TryParse(stringValue, CultureInfo.CurrentCulture, DateTimeStyles.None, out valueAsDate);

                if (parseSucceed)
                {
                    return valueAsDate.ToOADate();
                }
            }

            // Call base converter
            return base.ConvertFrom(context, culture, value);
        }
		
		#endregion
	}

	/// <summary>
	/// Converts maximum and minimum property of the axis. 
	/// Possible values: double, date, "Auto",
	/// </summary>
    internal class AxisMinMaxAutoValueConverter : AxisMinMaxValueConverter
	{
		#region Converter methods

		/// <summary>
		/// Standart values supported - return true
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Standard values supported.</returns>
		public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
		{
			return true;
		}

		/// <summary>
		/// Standart values are not exclusive - return false
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Non exclusive standard values.</returns>
		public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
		{
			return false;
		}

		/// <summary>
		/// Fill in the list of data series names.
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
		{
			ArrayList values = new ArrayList();
			values.Add(Double.NaN);
			
			return new StandardValuesCollection(values);
		}

		/// <summary>
		/// Convert minimum or maximum value to string
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <param name="culture">Culture information.</param>
		/// <param name="value">Value to convert.</param>
		/// <param name="destinationType">Convertion destination type.</param>
		/// <returns>Converted object.</returns>
		public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) 
		{  
			double	doubleValue = (double)value;
			if (destinationType == typeof(string))
			{
				if(Double.IsNaN(doubleValue))
				{
                    return Constants.AutoValue;
				}
			}

			// Call base class
			return base.ConvertTo(context, culture, value, destinationType);
		}

		/// <summary>
		/// Convert minimum or maximum values from string
		/// </summary>
		public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
		{
			// If converting from string value
            string crossingValue = value as string;
            if (crossingValue != null)
			{
                if (String.Compare(crossingValue, Constants.AutoValue, StringComparison.OrdinalIgnoreCase) == 0)
				{
					return Double.NaN;
				}
			}
				
			// Call base converter
			return base.ConvertFrom(context, culture, value);
		}

		#endregion
	}

	/// <summary>
	/// Converts title angle property of the strip line
	/// Possible values: 0, 90, 180, 270
	/// </summary>
    internal class StripLineTitleAngleConverter : Int32Converter
	{
		#region Converter methods

		/// <summary>
		/// Standart values supported - return true
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Standard values supported.</returns>
		public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
		{
			return true;
		}

		/// <summary>
		/// Standart values are not exclusive - return false
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Non exclusive standard values.</returns>
		public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
		{
			return true;
		}

		/// <summary>
		/// Fill in the list of data series names.
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
		{
			ArrayList values = new ArrayList();
			values.Add(0);
			values.Add(90);
			values.Add(180);
			values.Add(270);

			return new StandardValuesCollection(values);
		}

		#endregion
	}

	/// <summary>
	/// Converts Interval and IntervalOffset properties of the axis
	/// </summary>
    internal class AxisIntervalValueConverter : DoubleConverter
	{
		#region Converter methods

		/// <summary>
		/// Inicates that "NotSet" option is available
		/// </summary>
		internal	bool	hideNotSet = true;

		/// <summary>
		/// Standart values supported - return true.
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Standard values supported.</returns>
		public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
		{
			return true;
		}

		/// <summary>
		/// Standart values are not exclusive - return false
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Non exclusive standard values.</returns>
		public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
		{
			return false;
		}

		/// <summary>
		/// Fill in the list of standart values.
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <returns>Standart values collection.</returns>
		public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
		{
			ArrayList values = new ArrayList();
			if(!hideNotSet)
			{
				values.Add(Double.NaN);
			}
			values.Add(0.0);

			return new StandardValuesCollection(values);
		}

		/// <summary>
		/// Convert crossing value to string.
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <param name="culture">Culture information.</param>
		/// <param name="value">Value to convert.</param>
		/// <param name="destinationType">Convertion destination type.</param>
		/// <returns>Converted object.</returns>
		public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) 
		{  
			double	doubleValue = (double)value;
			if (destinationType == typeof(string))
			{
				if(Double.IsNaN(doubleValue))
				{
                    return Constants.NotSetValue;
				}
				else if(doubleValue == 0.0)
				{
                    return Constants.AutoValue;
				}
			}

			// Call base class
			return base.ConvertTo(context, culture, value, destinationType);
		}

		/// <summary>
		/// Convert crossing values from string
		/// </summary>
		/// <param name="context">Descriptor context.</param>
		/// <param name="culture">Culture information.</param>
		/// <param name="value">Value to convert from.</param>
		/// <returns>Converted object.</returns>
		public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
		{
			// If converting from string value
            string crossingValue = value as string;
            if (crossingValue != null)
			{
                if (String.Compare(crossingValue, Constants.AutoValue, StringComparison.OrdinalIgnoreCase) == 0)
				{
					return 0.0;
				}
                else if (String.Compare(crossingValue, Constants.NotSetValue, StringComparison.OrdinalIgnoreCase) == 0)
				{
					return Double.NaN;
				}
			}
			
			// Call base converter
			return base.ConvertFrom(context, culture, value);
		}

	#endregion
	}

	/// <summary>
	/// Converts Interval and IntervalOffset properties of the label style, tick marks and grids
	/// </summary>
    internal class AxisElementIntervalValueConverter : AxisIntervalValueConverter
	{
		/// <summary>
		/// Show the NotSet option for interval
		/// </summary>
		public AxisElementIntervalValueConverter()
		{
			base.hideNotSet = false;
		}
	}
}