/// <summary>
/// Converts an address string to the corresponding value.
/// </summary>
/// <param name="context">Type descriptor context.</param>
/// <param name="culture">Globalization info.</param>
/// <param name="value">The value being converted.</param>
/// <returns>The converted value.</returns>
public override Object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
{
Type valueType = null;
Boolean isHex = false;
if (context.Instance.GetType().IsAssignableFrom(typeof(AddressItem)))
{
valueType = (context.Instance as AddressItem)?.ElementType;
}
if (context.Instance.GetType().IsAssignableFrom(typeof(AddressItem)))
{
isHex = (context.Instance as AddressItem).IsValueHex;
}
if (valueType == null || !value.GetType().IsAssignableFrom(typeof(String)))
{
return(base.ConvertFrom(context, culture, value));
}
if (!(isHex ? CheckSyntax.CanParseHex(valueType, value as String) : CheckSyntax.CanParseValue(valueType, value as String)))
{
return(base.ConvertFrom(context, culture, value));
}
return(isHex ? Conversions.ParseHexStringAsDynamic(valueType, value as String) : Conversions.ParsePrimitiveStringAsDynamic(valueType, value as String));
}
/// <summary>
/// Initializes a new instance of the <see cref="AddressItem" /> class.
/// </summary>
/// <param name="baseAddress">The base address. This will be added as an offset from the resolved base identifier.</param>
/// <param name="elementType">The data type of the value at this address.</param>
/// <param name="description">The description of this address.</param>
/// <param name="resolveType">The identifier type for this address item.</param>
/// <param name="baseIdentifier">The identifier for the base address of this object.</param>
/// <param name="offsets">The pointer offsets of this address item.</param>
/// <param name="isValueHex">A value indicating whether the value at this address should be displayed as hex.</param>
/// <param name="value">The value at this address. If none provided, it will be figured out later. Used here to allow immediate view updates upon creation.</param>
public AddressItem(
IntPtr baseAddress,
Type elementType,
String description = "New Address",
AddressResolver.ResolveTypeEnum resolveType = AddressResolver.ResolveTypeEnum.Module,
String baseIdentifier = null,
IEnumerable <Int32> offsets = null,
Boolean isValueHex = false,
String value = null)
: base(description)
{
// Bypass setters to avoid running setter code
this.baseAddress = baseAddress;
this.ElementType = elementType;
this.resolveType = resolveType;
this.baseIdentifier = baseIdentifier;
this.offsets = offsets;
this.isValueHex = isValueHex;
if (!this.isValueHex && CheckSyntax.CanParseValue(elementType, value))
{
this.addressValue = Conversions.ParsePrimitiveStringAsDynamic(elementType, value);
}
else if (this.isValueHex && CheckSyntax.CanParseHex(elementType, value))
{
this.addressValue = Conversions.ParseHexStringAsPrimitiveString(elementType, value);
}
}
/// <summary>
/// Invoked when the convert to decimal menu item is clicked.
/// </summary>
/// <param name="sender">Sending object.</param>
/// <param name="e">Event args.</param>
private void ConvertToDecMenuItemClick(Object sender, EventArgs e)
{
if (CheckSyntax.CanParseHex(this.ElementType, this.Text))
{
this.Text = Conversions.ParseHexStringAsPrimitiveString(this.ElementType, this.Text);
}
this.IsHex = false;
}
/// <summary>
/// Hex string to an Int32.
/// </summary>
/// <param name="value">Value to be converted.</param>
/// <param name="targetType">Type to convert to.</param>
/// <param name="parameter">Optional conversion parameter.</param>
/// <param name="culture">Globalization info.</param>
/// <returns>An Int32. If conversion cannot take place, returns 0.</returns>
public Object ConvertBack(Object value, Type targetType, Object parameter, CultureInfo culture)
{
if (value == null)
{
return(0);
}
if (value is String)
{
if (CheckSyntax.CanParseHex(typeof(Int32), value.ToString()))
{
return(Conversions.ParseHexStringAsDynamic(typeof(Int32), value.ToString()));
}
}
return(0);
}
/// <summary>
/// Initializes a new instance of the <see cref="AddressItem" /> class.
/// </summary>
/// <param name="baseAddress">The base address. This will be added as an offset from the resolved base identifier.</param>
/// <param name="dataType">The data type of the value at this address.</param>
/// <param name="description">The description of this address.</param>
/// <param name="baseIdentifier">The identifier for the base address of this object.</param>
/// <param name="offsets">The pointer offsets of this address item.</param>
/// <param name="isValueHex">A value indicating whether the value at this address should be displayed as hex.</param>
/// <param name="value">The value at this address. If none provided, it will be figured out later. Used here to allow immediate view updates upon creation.</param>
public AddressItem(
Type dataType,
String description = "New Address",
Boolean isValueHex = false,
String value = null)
: base(description)
{
// Bypass setters to avoid running setter code
this.dataType = dataType;
this.isValueHex = isValueHex;
if (!this.isValueHex && CheckSyntax.CanParseValue(dataType, value))
{
this.addressValue = Conversions.ParsePrimitiveStringAsPrimitive(dataType, value);
}
else if (this.isValueHex && CheckSyntax.CanParseHex(dataType, value))
{
this.addressValue = Conversions.ParseHexStringAsPrimitiveString(dataType, value);
}
}
/// <summary>
/// Determines if the current text is valid for the current data type.
/// </summary>
private void UpdateValidity()
{
if (this.IsHex)
{
if (CheckSyntax.CanParseHex(this.ElementType, this.Text))
{
this.IsTextValid = true;
return;
}
}
else
{
if (CheckSyntax.CanParseValue(this.ElementType, this.Text))
{
this.IsTextValid = true;
return;
}
}
this.IsTextValid = false;
return;
}