// 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.VariableDecl"/>.
/// </summary>
public abstract class VariableDeclVM : StatementVM
{
#region /* FIELDS */
protected ExpressionVM _typeVM;
protected ExpressionVM _initializationVM;
#endregion
#region /* CONSTRUCTORS */
/// <summary>
/// Create a view model instance for the specified <see cref="CodeDOM.VariableDecl"/>.
/// </summary>
protected VariableDeclVM(VariableDecl variableDecl, Dictionary<CodeObject, CodeObjectVM> dictionary)
: base(variableDecl, dictionary)
{
if (variableDecl.Type != null)
_typeVM = (ExpressionVM)CreateVM(variableDecl.Type, false, dictionary);
if (variableDecl.Initialization != null)
_initializationVM = (ExpressionVM)CreateVM(variableDecl.Initialization, false, dictionary);
}
#endregion
#region /* PROPERTIES */
/// <summary>
/// The underlying <see cref="CodeDOM.VariableDecl"/> model.
/// </summary>
public VariableDecl VariableDecl
{
get { return (VariableDecl)CodeObject; }
}
/// <summary>
/// The type of the variable declaration.
/// </summary>
public virtual ExpressionVM Type
{
get { return _typeVM; }
}
/// <summary>
/// An optional initialization <see cref="ExpressionVM"/>.
/// </summary>
public ExpressionVM Initialization
{
get { return _initializationVM; }
}
/// <summary>
/// True if the variable has an initialization <see cref="ExpressionVM"/>.
/// </summary>
public bool HasInitialization
{
get { return (_initializationVM != null); }
}
#endregion
#region /* METHODS */
#endregion
#region /* RENDERING */
public static readonly Brush StaticBorderBrush = DarkPalerGreen;
public static readonly Brush StaticBackgroundBrush = PalerGreen;
public override Brush BorderBrush
{
get { return StaticBorderBrush; }
}
public override Brush BackgroundBrush
{
get { return StaticBackgroundBrush; }
}
public virtual void RenderType(CodeRenderer renderer, RenderFlags flags)
{
ExpressionVM type = Type;
if (type != null)
{
RenderFlags passFlags = (flags & RenderFlags.PassMask);
type.Render(renderer, passFlags | RenderFlags.IsPrefix | RenderFlags.Declaration);
}
}
protected override void RenderStatement(CodeRenderer renderer, RenderFlags flags)
{
RenderType(renderer, flags);
renderer.RenderText(VariableDecl.Name, IDENTIFIER_BRUSH, this);
}
protected void RenderConstantValue(CodeRenderer renderer, RenderFlags flags)
{
LiteralVM.RenderConstantValue(renderer, flags, VariableDecl.GetValue(), flags.HasFlag(RenderFlags.FormatAsHex), this);
}
protected void RenderInitialization(CodeRenderer renderer, RenderFlags flags)
{
renderer.RenderText(" ", PUNC_BRUSH, this);
if (OperatorVM.UseAlternativeDisplay)
AssignmentVM.AltRenderOperator(renderer, OPERATOR_BRUSH, this);
else
AssignmentVM.RenderOperator(renderer, OPERATOR_BRUSH, this);
Initialization.Render(renderer, flags | RenderFlags.ForceBorder | RenderFlags.PrefixSpace);
}
public override void RenderVisible(CodeRenderer renderer, RenderFlags flags)
{
base.RenderVisible(renderer, flags);
if (_initializationVM != null)
_initializationVM.RenderVisible(renderer, flags);
}
public override void UnRender()
{
if (_typeVM != null)
_typeVM.UnRender();
if (_initializationVM != null)
_initializationVM.UnRender();
base.UnRender();
}
#endregion
}
}