// 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.ConstraintClause"/>.
/// </summary>
public class ConstraintClauseVM : CodeObjectVM
{
#region /* STATICS */
internal static void AddViewModelMapping()
{
CreateViewModel.Add(typeof(ConstraintClause),
delegate(CodeObject codeObject, bool isDescription, Dictionary<CodeObject, CodeObjectVM> dictionary) { return new ConstraintClauseVM((ConstraintClause)codeObject, dictionary); });
}
#endregion
#region /* FIELDS */
protected SymbolicRefVM _typeParameterVM;
protected ChildListVM<TypeParameterConstraintVM> _constraintVMs;
#endregion
#region /* CONSTRUCTORS */
/// <summary>
/// Create a view model instance for the specified <see cref="CodeDOM.ConstraintClause"/>.
/// </summary>
public ConstraintClauseVM(ConstraintClause constraintClause, Dictionary<CodeObject, CodeObjectVM> dictionary)
: base(constraintClause, dictionary)
{
_typeParameterVM = (SymbolicRefVM)CreateVM(constraintClause.TypeParameter, false, dictionary);
_constraintVMs = CreateListVM<TypeParameterConstraint, TypeParameterConstraintVM>(constraintClause.Constraints, dictionary);
}
#endregion
#region /* PROPERTIES */
/// <summary>
/// The underlying <see cref="CodeDOM.ConstraintClause"/> model.
/// </summary>
public ConstraintClause ConstraintClause
{
get { return (ConstraintClause)CodeObject; }
}
/// <summary>
/// The <see cref="TypeParameterVM"/> being constrained.
/// </summary>
public SymbolicRefVM TypeParameter
{
get { return _typeParameterVM; }
}
/// <summary>
/// The list of <see cref="TypeParameterConstraintVM"/>s.
/// </summary>
public ChildListVM<TypeParameterConstraintVM> Constraints
{
get { return _constraintVMs; }
}
#endregion
#region /* METHODS */
#endregion
#region /* RENDERING */
public override Brush BorderBrush
{
get { return ExpressionVM.StaticBorderBrush; }
}
public override Brush BackgroundBrush
{
get { return ExpressionVM.StaticBackgroundBrush; }
}
public override void Render(CodeRenderer renderer, RenderFlags flags)
{
int newLines = ConstraintClause.NewLines;
if (newLines > 0)
{
if (!flags.HasFlag(RenderFlags.SuppressNewLine))
renderer.NewLines(newLines, ParentVM);
}
else if (flags.HasFlag(RenderFlags.PrefixSpace))
renderer.RenderText(" ", PUNC_BRUSH, ParentVM);
flags &= ~RenderFlags.SuppressNewLine;
bool increaseIndent = flags.HasFlag(RenderFlags.IncreaseIndent);
if (!flags.HasFlag(RenderFlags.NoBorder))
{
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 statement if the flag is set
if (increaseIndent)
renderer.IndentOnNewLineBegin(this);
renderer.RenderText(ConstraintClause.ParseToken, KEYWORD_BRUSH, this);
RenderFlags noDescFlags = passFlags & ~(RenderFlags.Description | RenderFlags.ShowParentTypes);
if (_typeParameterVM != null)
_typeParameterVM.Render(renderer, noDescFlags | RenderFlags.IsPrefix | RenderFlags.PrefixSpace);
renderer.RenderText(ConstraintClause.ParseTokenSeparator + " ", PUNC_BRUSH, this);
renderer.RenderList(_constraintVMs, noDescFlags, this);
RenderEOLComments(renderer, flags);
if (increaseIndent)
renderer.IndentOnNewLineEnd(this);
RenderAfter(renderer, passFlags | (flags & RenderFlags.NoPostAnnotations));
// If we have a border, return to the previous one
if (!flags.HasFlag(RenderFlags.NoBorder))
renderer.ReturnToBorderParent(this);
}
public static void RenderConstraints(CodeRenderer renderer, ChildListVM<ConstraintClauseVM> constraintVMs, RenderFlags flags)
{
if (constraintVMs != null && constraintVMs.Count > 0)
renderer.RenderList(constraintVMs, flags | RenderFlags.NoItemSeparators | (constraintVMs[0].IsFirstOnLine ? 0 : RenderFlags.PrefixSpace), constraintVMs.Parent);
}
public override void UnRender()
{
if (_typeParameterVM != null)
_typeParameterVM.UnRender();
ChildListHelpers.UnRender(_constraintVMs);
base.UnRender();
}
#endregion
}
}