public static void SetTextAttribute(this StageElement parent, string name, string value, bool removeIfEmpty = true)
{
bool flag;
if (value == null)
{
flag = true;
}
else
{
flag = (!removeIfEmpty ? false : string.IsNullOrEmpty(value));
}
bool flag1 = flag;
StageAttribute str = parent.Attribute(name);
if (str != null)
{
if (flag1)
{
str.Remove();
return;
}
if (!str.isText)
{
throw new InvalidOperationException("Cannot set a text value on a non-text attribute.");
}
str.@value = SerializationMaster.ToString(value);
}
else if (!flag1)
{
parent.Add(SerializationMaster.ToStageAttribute(name, value));
return;
}
}
/// <summary>
/// Sets the value of a text attribute. If it does not exist it is created.
/// If the value is <c>null</c> the attribute is removed.
/// If multiple identically named attributes exists only the first one is set.
/// </summary>
/// <param name="parent">The parent element.</param>
/// <param name="name">The name of the attribute.</param>
/// <param name="value">The value to set.</param>
/// <param name="removeIfEmpty">if set to <c>true</c> the attribute is removed if the <paramref name="value"/> is empty. The attribute is always removed if <paramref name="value"/> is <c>null</c></param>
public static void SetTextAttribute(this StageElement parent, string name, string value, bool removeIfEmpty = true)
{
bool remove = (value == null) || (removeIfEmpty && string.IsNullOrEmpty(value));
var attrib = parent.Attribute(name);
if (attrib == null)
{
if (!remove)
{
parent.Add(SerializationMaster.ToStageAttribute(name, value));
}
}
else if (remove)
{
attrib.Remove();
}
else if (!attrib.isText)
{
throw new InvalidOperationException("Cannot set a text value on a non-text attribute.");
}
else
{
attrib.value = SerializationMaster.ToString(value);
}
}
/// <summary>
/// Sets the value of an attribute. If it does not exist it is created.
/// If the value is <c>null</c> the attribute is removed.
/// If multiple identically named attributes exists only the first one is set.
/// </summary>
/// <param name="parent">The parent element.</param>
/// <param name="name">The name of the attribute.</param>
/// <param name="value">The value to set.</param>
public static void SetAttribute(this StageElement parent, string name, object value)
{
bool remove = (value == null);
var attrib = parent.Attribute(name);
if (attrib == null)
{
if (!remove)
{
parent.Add(SerializationMaster.ToStageAttribute(name, value));
}
}
else if (remove)
{
attrib.Remove();
}
else if (attrib.isText && !(value is string))
{
throw new InvalidOperationException("Use SetTextAttribute to set text attributes.");
}
else
{
attrib.value = SerializationMaster.ToString(value);
}
}
public static T AttributeValue <T>(this StageElement element, string attributeName)
{
if (element != null)
{
StageAttribute stageAttribute = element.Attribute(attributeName);
if (stageAttribute != null)
{
return(SerializationMaster.FromString <T>(stageAttribute.@value));
}
}
throw new ArgumentException(string.Concat("No attribute by that name was found: ", attributeName));
}
/// <summary>
/// Gets the converted value of the specified attribute.
/// </summary>
/// <param name="element">The element.</param>
/// <param name="attributeName">Name of the attribute.</param>
/// <returns>The value of the attribute.</returns>
/// <exception cref="System.ArgumentException">If no attribute by that name was found.</exception>
public static T AttributeValue <T>(this StageElement element, string attributeName)
{
if (element != null)
{
var attrib = element.Attribute(attributeName);
if (attrib != null)
{
return(SerializationMaster.FromString <T>(attrib.value));
}
}
throw new ArgumentException("No attribute by that name was found: " + attributeName);
}
public static T AttributeValueOrDefault <T>(this StageElement element, string attributeName, T defaultValue = null)
{
if (element == null)
{
return(defaultValue);
}
StageAttribute stageAttribute = element.Attribute(attributeName);
if (stageAttribute == null)
{
return(defaultValue);
}
return(SerializationMaster.FromString <T>(stageAttribute.@value));
}
/// <summary>
/// Gets the converted value of the specified attribute, or a default value if the element or the attribute is null or if it has no value.
/// </summary>
/// <param name="element">The element.</param>
/// <param name="attributeName">Name of the attribute.</param>
/// <param name="defaultValue">The default value.</param>
/// <returns>The value of the attribute, or <paramref name="defaultValue"/> if <paramref name="element"/> or the attribute is <c>null</c> or has no value.</returns>
public static T AttributeValueOrDefault <T>(this StageElement element, string attributeName, T defaultValue = default(T))
{
if (element == null)
{
return(defaultValue);
}
var attrib = element.Attribute(attributeName);
if (attrib == null)
{
return(defaultValue);
}
return(SerializationMaster.FromString <T>(attrib.value));
}
public static void SetAttribute(this StageElement parent, string name, object value)
{
bool flag = value == null;
StageAttribute str = parent.Attribute(name);
if (str != null)
{
if (flag)
{
str.Remove();
return;
}
if (str.isText && !(value is string))
{
throw new InvalidOperationException("Use SetTextAttribute to set text attributes.");
}
str.@value = SerializationMaster.ToString(value);
}
else if (!flag)
{
parent.Add(SerializationMaster.ToStageAttribute(name, value));
return;
}
}
