// The Nova Project by Ken Beckett.
// Copyright (C) 2007-2012 Inevitable Software, all rights reserved.
// Released under the Common Development and Distribution License, CDDL-1.0: http://opensource.org/licenses/cddl1.php
using System.Collections.Generic;
using System.Windows.Media;
using Nova.CodeDOM;
namespace Nova.UI
{
/// <summary>
/// The view model for a <see cref="CodeDOM.AnonymousMethod"/>.
/// </summary>
public class AnonymousMethodVM : ExpressionVM, IBlockVM
{
#region /* STATICS */
internal static void AddViewModelMapping()
{
CreateViewModel.Add(typeof(AnonymousMethod),
delegate(CodeObject codeObject, bool isDescription, Dictionary<CodeObject, CodeObjectVM> dictionary) { return new AnonymousMethodVM((AnonymousMethod)codeObject, dictionary); });
}
#endregion
#region /* FIELDS */
protected ChildListVM<ParameterDeclVM> _parameterVMs;
protected BlockVM _bodyVM;
#endregion
#region /* CONSTRUCTORS */
/// <summary>
/// Create a view model instance for the specified <see cref="CodeDOM.AnonymousMethod"/>.
/// </summary>
public AnonymousMethodVM(AnonymousMethod anonymousMethod, Dictionary<CodeObject, CodeObjectVM> dictionary)
: base(anonymousMethod, dictionary)
{
_parameterVMs = CreateListVM<ParameterDecl, ParameterDeclVM>(anonymousMethod.Parameters, dictionary);
_bodyVM = new BlockVM(anonymousMethod.Body, this, dictionary);
}
#endregion
#region /* PROPERTIES */
/// <summary>
/// The underlying <see cref="CodeDOM.AnonymousMethod"/> model.
/// </summary>
public AnonymousMethod AnonymousMethod
{
get { return (AnonymousMethod)CodeObject; }
}
/// <summary>
/// The <see cref="BlockVM"/> body.
/// </summary>
public BlockVM BodyVM
{
get { return _bodyVM; }
}
/// <summary>
/// The parameters of the anonymous method (if any).
/// </summary>
public ChildListVM<ParameterDeclVM> Parameters
{
get { return _parameterVMs; }
}
/// <summary>
/// True if the anonymous method has any parameters.
/// </summary>
public bool HasParameters
{
get { return (_parameterVMs != null && _parameterVMs.Count > 0); }
}
/// <summary>
/// The number of parameters the anonymous method has.
/// </summary>
public int ParameterCount
{
get { return (_parameterVMs != null ? _parameterVMs.Count : 0); }
}
#endregion
#region /* RENDERING */
public override Brush BorderBrush
{
get { return Brushes.Wheat; }
}
public override Brush BackgroundBrush
{
get { return Brushes.AntiqueWhite; }
}
protected override void RenderAfter(CodeRenderer renderer, RenderFlags flags)
{
if (!flags.HasFlag(RenderFlags.Description))
{
base.RenderAfter(renderer, flags);
if (_bodyVM != null)
_bodyVM.Render(renderer, flags);
}
}
public override void Render(CodeRenderer renderer, RenderFlags flags)
{
int newLines = AnonymousMethod.NewLines;
if (newLines > 0)
{
if (!flags.HasFlag(RenderFlags.SuppressNewLine))
renderer.NewLines(newLines, ParentVM);
}
else if (flags.HasFlag(RenderFlags.PrefixSpace))
renderer.RenderText(" ", PUNC_BRUSH, ParentVM);
bool increaseIndent = (flags.HasFlag(RenderFlags.IncreaseIndent) && !flags.HasFlag(RenderFlags.NoIncreaseIndent));
bool hasBorder = (flags.HasFlag(RenderFlags.ForceBorder) || HasBorder()) && !flags.HasFlag(RenderFlags.NoBorder);
if (hasBorder)
{
CreateBorder(renderer, flags);
increaseIndent = true; // Always increase the indent level for wrapped lines inside a border
}
RenderFlags passFlags = (flags & RenderFlags.PassMask);
RenderBefore(renderer, passFlags | RenderFlags.IsPrefix);
// Increase the indent level for any newlines that occur within the expression if the flag is set
if (increaseIndent)
renderer.IndentOnNewLineBegin(this);
bool hasParens = AnonymousMethod.HasParens;
if (hasParens)
renderer.RenderText(Expression.ParseTokenStartGroup, PUNC_BRUSH, this);
RenderExpression(renderer, passFlags | (flags & (RenderFlags.Attribute | RenderFlags.HasDotPrefix | RenderFlags.Declaration)));
if (AnonymousMethod.HasTerminator && !StatementVM.HideTerminators && !flags.HasFlag(RenderFlags.Description))
renderer.RenderText(Statement.ParseTokenTerminator, PUNC_BRUSH, this);
if (!flags.HasFlag(RenderFlags.NoEOLComments))
RenderEOLComments(renderer, flags);
RenderAfter(renderer, passFlags | (flags & RenderFlags.NoPostAnnotations));
if (hasParens)
{
if (AnonymousMethod.IsEndFirstOnLine)
renderer.NewLine();
renderer.RenderText(Expression.ParseTokenEndGroup, PUNC_BRUSH, this);
}
if (increaseIndent)
renderer.IndentOnNewLineEnd(this);
// If we have a border, return to the previous one
if (hasBorder)
renderer.ReturnToBorderParent(this);
}
public override void RenderExpression(CodeRenderer renderer, RenderFlags flags)
{
RenderFlags passFlags = (flags & RenderFlags.PassMask);
if (!flags.HasFlag(RenderFlags.Description))
{
renderer.RenderText(AnonymousMethod.ParseToken, KEYWORD_BRUSH, this);
bool hasArguments = (_parameterVMs != null || AnonymousMethod.HasInfixComments);
bool showParens = (hasArguments && !MethodDeclBaseVM.HideMethodParens);
renderer.RenderText(showParens ? AnonymousMethod.ParseTokenStart : (hasArguments ? " " : ""), PUNC_BRUSH, this);
RenderInfixComments(renderer, 0, flags);
renderer.RenderList(_parameterVMs, passFlags, this);
if (showParens)
{
if (AnonymousMethod.IsEndFirstOnLine)
renderer.NewLine();
renderer.RenderText(AnonymousMethod.ParseTokenEnd, PUNC_BRUSH, this);
}
}
else
{
// If rendering as a description, just render as a delegate type
CreateVM(AnonymousMethod.GetReturnType()).Render(renderer, passFlags | RenderFlags.IsPrefix);
renderer.RenderText(AnonymousMethod.ParseToken, KEYWORD_BRUSH, this);
renderer.RenderText(AnonymousMethod.ParseTokenStart, PUNC_BRUSH, this);
renderer.RenderList(_parameterVMs, passFlags, this);
if (AnonymousMethod.IsEndFirstOnLine)
renderer.NewLine();
renderer.RenderText(AnonymousMethod.ParseTokenEnd, PUNC_BRUSH, this);
}
}
public override void RenderVisible(CodeRenderer renderer, RenderFlags flags)
{
base.RenderVisible(renderer, flags);
renderer.RenderVisibleList(_parameterVMs, flags);
if (_bodyVM != null)
_bodyVM.RenderVisible(renderer, flags);
}
public override void UnRender()
{
ChildListHelpers.UnRender(_parameterVMs);
if (_bodyVM != null)
_bodyVM.UnRender();
base.UnRender();
}
#endregion
}
}