// 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 Nova.CodeDOM;
namespace Nova.UI
{
/// <summary>
/// The view model for a <see cref="CodeDOM.Initializer"/>.
/// </summary>
public class InitializerVM : ExpressionVM
{
#region /* STATICS */
internal static void AddViewModelMapping()
{
CreateViewModel.Add(typeof(Initializer),
delegate(CodeObject codeObject, bool isDescription, Dictionary<CodeObject, CodeObjectVM> dictionary) { return new InitializerVM((Initializer)codeObject, dictionary); });
}
#endregion
#region /* FIELDS */
protected ChildListVM<ExpressionVM> _expressionVMs;
#endregion
#region /* CONSTRUCTORS */
/// <summary>
/// Create a view model instance for the specified <see cref="CodeDOM.Initializer"/>.
/// </summary>
public InitializerVM(Initializer initializer, Dictionary<CodeObject, CodeObjectVM> dictionary)
: base(initializer, dictionary)
{
_expressionVMs = CreateListVM<Expression, ExpressionVM>(initializer.Expressions, dictionary);
}
#endregion
#region /* PROPERTIES */
/// <summary>
/// The underlying <see cref="CodeDOM.Initializer"/> model.
/// </summary>
public Initializer Initializer
{
get { return (Initializer)CodeObject; }
}
/// <summary>
/// A collection of child <see cref="ExpressionVM"/>s.
/// </summary>
public ChildListVM<ExpressionVM> Expressions
{
get { return _expressionVMs; }
}
/// <summary>
/// True if there are any child <see cref="Expression"/>s.
/// </summary>
public bool HasExpressions
{
get { return (_expressionVMs != null && _expressionVMs.Count > 0); }
}
#endregion
#region /* METHODS */
#endregion
#region /* RENDERING */
public override void Render(CodeRenderer renderer, RenderFlags flags)
{
flags |= RenderFlags.ForceBorder;
int newLines = Initializer.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 initializer if the flag is set
if (increaseIndent)
renderer.IndentOnNewLineBegin(this);
RenderExpression(renderer, passFlags | (flags & (RenderFlags.Attribute | RenderFlags.HasDotPrefix | RenderFlags.Declaration)));
if (Initializer.HasTerminator && !StatementVM.HideTerminators)
renderer.RenderText(Statement.ParseTokenTerminator, PUNC_BRUSH, 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 (hasBorder)
renderer.ReturnToBorderParent(this);
}
public override void RenderExpression(CodeRenderer renderer, RenderFlags flags)
{
// Render the open brace
if (!BlockVM.HideBraces)
{
renderer.RenderText(Initializer.ParseTokenStart, PUNC_BRUSH, CodeRenderer.CodeFontFamily,
BlockVM.TinyBraces ? CodeRenderer.TinyFontSize : CodeRenderer.CodeFontSize, 0, TextStyle.Normal, this);
flags &= ~RenderFlags.SuppressNewLine;
}
if (!flags.HasFlag(RenderFlags.NoEOLComments))
RenderInfixEOLComments(renderer, flags);
// Render the body of the initializer. Always prefix spaces, even on the first item after the '{' (ignored
// for IsFirstOnLine items). Force borders on all expressions if the Initializer is multi-line.
renderer.RenderList(_expressionVMs, flags | RenderFlags.PrefixSpace
| (_expressionVMs != null && _expressionVMs.Count > 0 && _expressionVMs[0].IsFirstOnLine ? RenderFlags.ForceBorder : 0), this);
// Render the close brace
if (!BlockVM.HideBraces)
{
int endNewLines = Initializer.EndNewLines;
if (endNewLines > 0)
renderer.NewLines(endNewLines, ParentVM);
else
renderer.RenderText(" ", PUNC_BRUSH, ParentVM);
renderer.RenderText(Initializer.ParseTokenEnd, PUNC_BRUSH, CodeRenderer.CodeFontFamily,
BlockVM.TinyBraces ? CodeRenderer.TinyFontSize : CodeRenderer.CodeFontSize, 0, TextStyle.Normal, this);
}
}
public override void RenderVisible(CodeRenderer renderer, RenderFlags flags)
{
base.RenderVisible(renderer, flags);
renderer.RenderVisibleList(_expressionVMs, flags);
}
public override void UnRender()
{
ChildListHelpers.UnRender(_expressionVMs);
base.UnRender();
}
#endregion
}
}