/// <summary>
/// Returns whether the given value object is valid for this type and for the specified context.
/// </summary>
/// <param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"></see> that provides a format context.</param>
/// <param name="value">The <see cref="T:System.Object"></see> to test for validity.</param>
/// <returns>
/// true if the specified value is valid for this object; otherwise, false.
/// </returns>
public override bool IsValid(ITypeDescriptorContext context, object value)
{
bool response = true;
if (value is string)
{
DTE vs = (DTE)context.GetService(typeof(DTE));
response = !DteHelperEx.ProjectExists(vs.Solution, value.ToString(), this.language);
}
return(response);
}
/// <summary>
/// Contains code that will be called when recipe execution begins. This is the first method in the lifecycle.
/// </summary>
/// <param name="currentValue">An <see cref="T:System.Object"/> that contains the current value of the argument.</param>
/// <param name="newValue">When this method returns, contains an <see cref="T:System.Object"/> that contains
/// the new value of the argument, if the returned value
/// of the method is <see langword="true"/>. Otherwise, it is ignored.</param>
/// <returns>
/// <see langword="true"/> if the argument value should be replaced with
/// the value in <paramref name="newValue"/>; otherwise, <see langword="false"/>.
/// </returns>
/// <remarks>By default, always returns <see langword="false"/>, unless overriden by a derived class.</remarks>
public override bool OnBeginRecipe(object currentValue, out object newValue)
{
DTE dte = (DTE)GetService(typeof(DTE));
ExpressionEvaluationService evaluator = new ExpressionEvaluationService();
IDictionaryService dictservice = (IDictionaryService)GetService(typeof(IDictionaryService));
string defaultName = evaluator.Evaluate(
this.expression,
new ServiceAdapterDictionary(dictservice)).ToString();
string projectName = defaultName;
while (DteHelperEx.ProjectExists(dte.Solution, projectName, this.language))
{
projectName = ProvideNewDefaultValue(defaultName, projectName);
}
newValue = projectName;
return(true);
}