// 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.BinaryOperator"/>.
/// </summary>
public abstract class BinaryOperatorVM : OperatorVM
{
#region /* FIELDS */
protected ExpressionVM _leftVM;
protected ExpressionVM _rightVM;
#endregion
#region /* CONSTRUCTORS */
/// <summary>
/// Create a view model instance for the specified <see cref="CodeDOM.BinaryOperator"/>.
/// </summary>
protected BinaryOperatorVM(BinaryOperator binaryOperator, Dictionary<CodeObject, CodeObjectVM> dictionary)
: base(binaryOperator, dictionary)
{
_leftVM = (ExpressionVM)CreateVM(binaryOperator.Left, false, dictionary);
_rightVM = (ExpressionVM)CreateVM(binaryOperator.Right, false, dictionary);
}
#endregion
#region /* PROPERTIES */
/// <summary>
/// The underlying <see cref="CodeDOM.BinaryOperator"/> model.
/// </summary>
public BinaryOperator BinaryOperator
{
get { return (BinaryOperator)CodeObject; }
}
/// <summary>
/// The left-side <see cref="ExpressionVM"/>.
/// </summary>
public ExpressionVM Left
{
get { return _leftVM; }
}
/// <summary>
/// The right-side <see cref="ExpressionVM"/>.
/// </summary>
public ExpressionVM Right
{
get { return _rightVM; }
}
#endregion
#region /* METHODS */
#endregion
#region /* RENDERING */
protected override Brush RenderBrush(RenderFlags flags)
{
// If there is an unresolved operator overload, render it as an error (or warning if in a doc comment)
return (BinaryOperator.HiddenRef is UnresolvedRef ? (flags.HasFlag(RenderFlags.InDocComment) ? WARNING_BRUSH : ERROR_BRUSH) : OPERATOR_BRUSH);
}
public override void Render(CodeRenderer renderer, RenderFlags flags)
{
// Increase the indent level for any binary operator expressions that wrap, unless the parent
// is the same operator (required for right-associative operators, such as Assignment - left
// associative operators would only indent once anyway, due to the drawing order).
base.Render(renderer, flags | (ParentVM == null || ParentVM.GetType() != GetType() ? RenderFlags.IncreaseIndent : 0));
}
public override void RenderExpression(CodeRenderer renderer, RenderFlags flags)
{
RenderFlags passFlags = (flags & RenderFlags.PassMask);
if (_leftVM != null)
_leftVM.Render(renderer, passFlags | RenderFlags.IsPrefix);
if (UseAlternativeDisplay)
AltRenderOperator(renderer, flags);
else
RenderOperator(renderer, flags);
RenderInfixComments(renderer, 0, flags | RenderFlags.PrefixSpace);
if (_rightVM != null)
_rightVM.Render(renderer, passFlags | RenderFlags.PrefixSpace);
}
public override void RenderVisible(CodeRenderer renderer, RenderFlags flags)
{
base.RenderVisible(renderer, flags);
if (_leftVM != null)
_leftVM.RenderVisible(renderer, flags);
if (_rightVM != null)
_rightVM.RenderVisible(renderer, flags);
}
public override void UnRender()
{
if (_leftVM != null)
_leftVM.UnRender();
if (_rightVM != null)
_rightVM.UnRender();
base.UnRender();
}
public override void RenderToolTip(CodeRenderer renderer, RenderFlags flags)
{
base.RenderToolTip(renderer, flags);
if (BinaryOperator.HiddenRef != null)
{
renderer.NewLine();
CreateVM(BinaryOperator.HiddenRef).RenderToolTip(renderer, RenderFlags.SuppressLineCol);
}
}
#endregion
}
}