public override void Execute(SolutionModel solutionModel, SelectionContext context)
{
FileModel fileModel;
CodeSpan selection;
if (!solutionModel.IsEditorSelection(context, out fileModel, out selection))
{
return;
}
IPropertyDeclaration propertyDeclaration = fileModel.InnerMost <IPropertyDeclaration>(selection);
if (IsFieldBackedPropertyWithSetterInsideClass(propertyDeclaration) && EnclosingClassImplementsINotifyPropertyChanged(propertyDeclaration))
{
IConstructLanguage language = propertyDeclaration.Language;
string methodInvocationName = language.Name == LanguageNames.CSharp ? "OnPropertyChanged" : "RaisePropertyChangedEvent";
IMethodInvocation methodInvocation =
language.MethodInvocation(
language.None <IExpression>(),
language.Identifier(methodInvocationName),
language.None <ITypeArguments>(),
language.Arguments(
language.Argument(language.StringLiteral(propertyDeclaration.Identifier.Name))));
IAccessor setter = propertyDeclaration.Setter();
List <IStatement> ifBlockStatements = new List <IStatement>(setter.Block.ChildStatements);
ifBlockStatements.Add(language.ExpressionStatement(methodInvocation));
IIfStatement ifStatement =
language.IfStatement(
language.BinaryExpression(
language.MemberAccess(language.None <IExpression>(),
propertyDeclaration.BackingField().Identifier),
Operator.NotEqual,
language.Expression("value")),
language.Block(ifBlockStatements));
IBlock newBlock = language.Block(ifStatement);
setter.Block = newBlock;
}
}
private void InsertWrappedProperties(IClassDeclaration viewModel, List <IPropertyDeclaration> confirmedPropertiesForWrapping, IFieldDeclaration wrappedClassField, IIdentifier onPropertyChangedIdentifier)
{
IConstructLanguage language = viewModel.Language;
foreach (IPropertyDeclaration property in confirmedPropertiesForWrapping)
{
IMemberAccess propertyMemberAccess = language.MemberAccess(
language.MemberAccess(language.None <IExpression>(), wrappedClassField.Identifier),
property.Identifier);
IAccessor getterOfWrapper = language.None <IAccessor>();
IAccessor propertyGetter = property.Getter();
if (propertyGetter.Exists && IsAccessorVisibleOutsideClass(propertyGetter.Modifiers))
{
getterOfWrapper = language.Getter(
language.Modifiers(propertyGetter.Modifiers.Modifiers),
language.Block(
language.ReturnStatement(propertyMemberAccess)));
}
IAccessor setterOfWrapper = language.None <IAccessor>();
IAccessor propertySetter = property.Setter();
if (propertySetter.Exists && IsAccessorVisibleOutsideClass(propertySetter.Modifiers))
{
IStatement assignment = language.AssignmentStatement(propertyMemberAccess, language.Expression("value"));
IMethodInvocation onPropertyChangedInvocation =
language.MethodInvocation(
language.None <IExpression>(),
onPropertyChangedIdentifier,
language.None <ITypeArguments>(),
language.Arguments(
language.Argument(language.StringLiteral(property.Identifier.Name))));
IIfStatement ifStatement =
language.IfStatement(
language.BinaryExpression(propertyMemberAccess,
Operator.NotEqual,
language.Expression("value")),
language.Block(assignment, language.ExpressionStatement(onPropertyChangedInvocation)));
setterOfWrapper = language.Setter(
language.Modifiers(propertyGetter.Modifiers.Modifiers),
language.Block(ifStatement));
}
if (getterOfWrapper.Exists || setterOfWrapper.Exists)
{
IPropertyDeclaration wrapperProperty = language.Property(
language.None <IDocComment>(),
language.None <IAttributes>(),
property.Modifiers,
property.TypeName,
property.Identifier,
getterOfWrapper,
setterOfWrapper);
viewModel.Insert(wrapperProperty);
}
}
}
private IAccessor CreateSetter(IConstructLanguage language, string propertyName, IFieldDeclaration field)
{
string propertyChangedName = language.Name == LanguageNames.CSharp ? "OnPropertyChanged" : "RaisePropertyChangedEvent";
IMethodInvocation onPropertyChanged = language.MethodInvocation(language.None<IExpression>(),
language.Identifier(propertyChangedName),
language.None<ITypeArguments>(),
language.Arguments(
language.Argument(language.StringLiteral(propertyName))));
IMemberAccess fieldUsage = language.MemberAccess(language.None<IExpression>(), field.Identifier);
IExpression valueUsage = language.Expression("value");
IStatement assignment = language.AssignmentStatement(fieldUsage, valueUsage);
IIfStatement ifStatement =
language.IfStatement(
language.BinaryExpression(fieldUsage,
Operator.NotEqual,
valueUsage),
language.Block(assignment, language.ExpressionStatement(onPropertyChanged)));
IAccessor setter = language.Setter(language.Block(ifStatement));
return setter;
}
private IAccessor CreateSetter(IConstructLanguage language, string propertyName, IFieldDeclaration field)
{
string propertyChangedName = language.Name == LanguageNames.CSharp ? "OnPropertyChanged" : "RaisePropertyChangedEvent";
IMethodInvocation onPropertyChanged = language.MethodInvocation(language.None <IExpression>(),
language.Identifier(propertyChangedName),
language.None <ITypeArguments>(),
language.Arguments(
language.Argument(language.StringLiteral(propertyName))));
IMemberAccess fieldUsage = language.MemberAccess(language.None <IExpression>(), field.Identifier);
IExpression valueUsage = language.Expression("value");
IStatement assignment = language.AssignmentStatement(fieldUsage, valueUsage);
IIfStatement ifStatement =
language.IfStatement(
language.BinaryExpression(fieldUsage,
Operator.NotEqual,
valueUsage),
language.Block(assignment, language.ExpressionStatement(onPropertyChanged)));
IAccessor setter = language.Setter(language.Block(ifStatement));
return(setter);
}
