QuickFix Create hotspot with type selection

[Pascal Empl]

I have a quickfix that creates a PropertyDeclaration and i want to that the user can change the type and name of the property in the same way as the "prop" template.

How can i manage that?

[Matt Ellis]

Hi Pascal. You can use LiveTemplatesManager.Instance.CreateHotspotSessionAtopExistingText to add a hotspot to a given text control and range. You need to pass in an array of HotspotInfo, which you can create yourself, or take a look at how the "create from usage" actions handle it, by creating an IntentionResult that populates a list of ITemplateFieldHolders, each of which has a GetInfo method that can get the corresponding HotspotInfo. There are a few helper methods to create these ITemplateFieldHolders, such as FieldDeclarationBuilder, or the classes it uses - ReturnTypeBuilder, and TypeUsageBuilder.

Regards

Matt

[Pascal Empl]

Where can i take a look at the "create from usage" actions?

[Matthew Ellis]

Check out CreateFromUsageActionBase2 and derived classes.

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[Pascal Empl]

I have a highlighting and for this highlighting a quickfix inherited from QuickFixBase.

This is my current code:

protected override Action<ITextControl> ExecutePsiTransaction(ISolution solution, IProgressIndicator progress)

        {

            var memberReference = mHighlighting.ReferenceExpression.GetConditionalMemberReference();

            if (memberReference == null)

                return null;

            var resolve = memberReference.Resolve();

            if (resolve.ResolveErrorType != ResolveErrorType.OK)

                return null;

            if (resolve.DeclaredElement == null)

                return null;

            var declarations = resolve.DeclaredElement.GetDeclarations<IPropertyDeclaration>();

            if (declarations.Count != 1)

                return null;

            var userControl = new PropertyNameWindow();

            var result = userControl.ShowDialog();

            if (!result.HasValue || !result.Value)

                return null;

            var propDeclaration = declarations[0];

            propDeclaration.NavigateToNode(true);

            var t = CSharpTypeFactory.CreateType("GreenGate.Entity.Models.BaseEntity", mHighlighting.ReferenceExpression.GetPsiModule());

            var vFactory = CSharpElementFactory.GetInstance(mHighlighting.ReferenceExpression.GetPsiModule());

            var navigationPropertyDeclaration = vFactory.CreatePropertyDeclaration(t, userControl.PropertyName.Text);

            navigationPropertyDeclaration.SetAccessRights(AccessRights.PUBLIC);

            navigationPropertyDeclaration.SetVirtual(true);

            var getDec = vFactory.CreateAccessorDeclaration(AccessorKind.GETTER, false);

            var setDec = vFactory.CreateAccessorDeclaration(AccessorKind.SETTER, false);

            navigationPropertyDeclaration.AddAccessorDeclarationAfter(setDec, null);

            navigationPropertyDeclaration.AddAccessorDeclarationAfter(getDec, null);

            

            ModificationUtil.AddChildAfter(propDeclaration, navigationPropertyDeclaration);

            var mappingExpression = vFactory.CreateExpression("$0(a => a.$1).WithMany().HasForeignKey(a => a.$2);", mHighlighting.IsOptional ? "HasOptional" : "HasRequired", userControl.PropertyName.Text, mHighlighting.ReferenceExpression.NameIdentifier.Name);

            ModificationUtil.AddChildAfter(mHighlighting.StatementNode, mappingExpression);

            return null;

        }

Example Code that will be analysed:

public class Entity
{
  public int? Id { get; set; }
}

public class Mapping
{
  public Mapping
  {
    Property<Entity>(m => m.Id);
  }
}

The highlighting is shown in class "Mapping" on "Id". My QuickFix creates now a property in class "Entity" and some code in the constructor of class "Mapping". That code needs the name of the property created in class "Entity".

My code works but with a window where you enter a PropertyName and generates the property with a dummy type. In my opinion my code is an example for "You shouldn't do it like this" but i can't get it work on another way.