/
RemoveParametersViewModel.cs
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/
RemoveParametersViewModel.cs
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using NLog;
using Rubberduck.Refactorings.RemoveParameters;
using Rubberduck.UI.Command;
using System;
using System.Collections.Generic;
using Rubberduck.Parsing.Symbols;
using System.Linq;
using Rubberduck.Parsing.VBA;
namespace Rubberduck.UI.Refactorings.RemoveParameters
{
public class RemoveParametersViewModel : RefactoringViewModelBase<RemoveParametersModel>
{
private readonly IDeclarationFinderProvider _declarationFinderProvider;
public RemoveParametersViewModel(IDeclarationFinderProvider declarationFinderProvider, RemoveParametersModel model) : base(model)
{
_declarationFinderProvider = declarationFinderProvider;
RemoveParameterCommand = new DelegateCommand(LogManager.GetCurrentClassLogger(), param => RemoveParameter((ParameterViewModel)param));
RestoreParameterCommand = new DelegateCommand(LogManager.GetCurrentClassLogger(), param => RestoreParameter((ParameterViewModel)param));
Parameters = model.Parameters.Select(p => p.ToViewModel()).ToList();
}
private void UpdateModelParameters()
{
Model.RemoveParameters = Parameters.Where(m => m.IsRemoved).Select(vm => vm.ToModel()).ToList();
}
private List<ParameterViewModel> _parameters;
public List<ParameterViewModel> Parameters
{
get => _parameters;
set
{
_parameters = value;
UpdateModelParameters();
OnPropertyChanged();
}
}
public string SignaturePreview
{
get
{
// if there is only one parameter, we remove it without displaying the UI; this gets called anyway as part of the initialization process
if (Parameters == null)
{
return string.Empty;
}
var member = Parameters[0].Declaration.ParentDeclaration;
if (member.DeclarationType.HasFlag(DeclarationType.Property))
{
var getter = _declarationFinderProvider.DeclarationFinder
.UserDeclarations(DeclarationType.PropertyGet)
.FirstOrDefault(item => item.Scope == member.Scope
&& item.IdentifierName == member.IdentifierName);
var letter = _declarationFinderProvider.DeclarationFinder
.UserDeclarations(DeclarationType.PropertyLet)
.FirstOrDefault(item => item.Scope == member.Scope
&& item.IdentifierName == member.IdentifierName);
var setter = _declarationFinderProvider.DeclarationFinder
.UserDeclarations(DeclarationType.PropertySet)
.FirstOrDefault(item => item.Scope == member.Scope
&& item.IdentifierName == member.IdentifierName);
var signature = string.Empty;
if (getter != null) { signature += GetSignature((PropertyGetDeclaration)getter); }
if (letter != null)
{
if (!string.IsNullOrEmpty(signature)) { signature += Environment.NewLine; }
signature += GetSignature((PropertyLetDeclaration)letter);
}
if (setter != null)
{
if (!string.IsNullOrEmpty(signature)) { signature += Environment.NewLine; }
signature += GetSignature((PropertySetDeclaration)setter);
}
return signature;
}
return GetSignature((dynamic) member);
}
}
private string GetSignature(SubroutineDeclaration member)
{
var access = member.Accessibility.TokenString();
var selectedParams = Parameters.Where(p => !p.IsRemoved).Select(s => s.Name);
return $"{access} Sub {member.IdentifierName}({string.Join(", ", selectedParams)})";
}
private string GetSignature(FunctionDeclaration member)
{
var access = member.Accessibility.TokenString();
var selectedParams = Parameters.Where(p => !p.IsRemoved).Select(s => s.Name);
return $"{access} Function {member.IdentifierName}({string.Join(", ", selectedParams)}) As {member.AsTypeName}";
}
private string GetSignature(EventDeclaration member)
{
var access = member.Accessibility.TokenString();
var selectedParams = Parameters.Where(p => !p.IsRemoved).Select(s => s.Name);
return $"{access} Event {member.IdentifierName}({string.Join(", ", selectedParams)})";
}
private string GetSignature(PropertyGetDeclaration member)
{
var access = member.Accessibility.TokenString();
var selectedParams = Parameters.Where(p => !p.IsRemoved).Select(s => s.Name);
return $"{access} Property Get {member.IdentifierName}({string.Join(", ", selectedParams)}) As {member.AsTypeName}";
}
private string GetSignature(PropertyLetDeclaration member)
{
var access = member.Accessibility.TokenString();
var selectedParams = Parameters.Where(p => !p.IsRemoved).Select(s => s.Name).ToList();
selectedParams.Add(new Parameter(member.Parameters.Last()).Name);
return $"{access} Property Let {member.IdentifierName}({string.Join(", ", selectedParams)})";
}
private string GetSignature(PropertySetDeclaration member)
{
var access = member.Accessibility.TokenString();
var selectedParams = Parameters.Where(p => !p.IsRemoved).Select(s => s.Name).ToList();
selectedParams.Add(new Parameter(member.Parameters.Last()).Name);
return $"{access} Property Set {member.IdentifierName}({string.Join(", ", selectedParams)})";
}
private void RemoveParameter(ParameterViewModel parameter)
{
if (parameter != null)
{
parameter.IsRemoved = true;
UpdateModelParameters();
OnPropertyChanged(nameof(SignaturePreview));
}
}
private void RestoreParameter(ParameterViewModel parameter)
{
if (parameter != null)
{
parameter.IsRemoved = false;
UpdateModelParameters();
OnPropertyChanged(nameof(SignaturePreview));
}
}
public CommandBase RemoveParameterCommand { get; }
public CommandBase RestoreParameterCommand { get; }
}
}