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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Documents / FixedSOMContainer.cs / 1305600 / FixedSOMContainer.cs
/*++ File: FixedSOMContainer.cs Copyright (C) 2005 Microsoft Corporation. All rights reserved. Description: Abstract class that provides a common base class for all semantic containers History: 05/17/2005: agurcan - Created --*/ namespace System.Windows.Documents { using System.Collections.Generic; using System.Diagnostics; using System.Windows.Media; internal abstract class FixedSOMContainer :FixedSOMSemanticBox, IComparable { //-------------------------------------------------------------------- // // Constructors // //--------------------------------------------------------------------- #region Constructors protected FixedSOMContainer() { _semanticBoxes = new List(); } #endregion Constructors int IComparable.CompareTo(object comparedObj) { int result = Int32.MinValue; FixedSOMPageElement compared = comparedObj as FixedSOMPageElement; FixedSOMPageElement This = this as FixedSOMPageElement; Debug.Assert(compared != null); Debug.Assert(This != null); if (compared == null) { throw new ArgumentException(SR.Get(SRID.UnexpectedParameterType, comparedObj.GetType(), typeof(FixedSOMContainer)), "comparedObj"); } SpatialComparison compareHor = base._CompareHorizontal(compared, false); SpatialComparison compareVer = base._CompareVertical(compared); Debug.Assert(compareHor != SpatialComparison.None); Debug.Assert(compareVer != SpatialComparison.None); switch (compareHor) { case SpatialComparison.Before: if (compareVer != SpatialComparison.After) { result = -1; } break; case SpatialComparison.After: if (compareVer != SpatialComparison.Before) { result = 1; } break; case SpatialComparison.OverlapBefore: if (compareVer == SpatialComparison.Before) { result = -1; } else if (compareVer == SpatialComparison.After) { result = 1; } break; case SpatialComparison.OverlapAfter: if (compareVer == SpatialComparison.After) { result = 1; } else if (compareVer == SpatialComparison.Before) { result = -1; } break; case SpatialComparison.Equal: switch (compareVer) { case SpatialComparison.After: case SpatialComparison.OverlapAfter: result = 1; break; case SpatialComparison.Before: case SpatialComparison.OverlapBefore: result = -1; break; case SpatialComparison.Equal: result = 0; break; default: Debug.Assert(false); break; } break; default: //Shouldn't happen Debug.Assert(false); break; } if (result == Int32.MinValue) { //Indecisive. Does markup order help? if (This.FixedNodes.Count == 0 || compared.FixedNodes.Count == 0) { result = 0; } else { FixedNode thisObjFirstNode = This.FixedNodes[0]; FixedNode thisObjLastNode = This.FixedNodes[This.FixedNodes.Count - 1]; FixedNode otherObjFirstNode = compared.FixedNodes[0]; FixedNode otherObjLastNode = compared.FixedNodes[compared.FixedNodes.Count - 1]; if (This.FixedSOMPage.MarkupOrder.IndexOf(otherObjFirstNode) - This.FixedSOMPage.MarkupOrder.IndexOf(thisObjLastNode) == 1) { result = -1; } else if (This.FixedSOMPage.MarkupOrder.IndexOf(otherObjLastNode) - This.FixedSOMPage.MarkupOrder.IndexOf(thisObjFirstNode) == 1) { result = 1; } else { //Indecisive. Whichever is below comes after; if same whichever is on the right comes after int absVerComparison = _SpatialToAbsoluteComparison(compareVer); result = absVerComparison != 0 ? absVerComparison : _SpatialToAbsoluteComparison(compareHor); } } } return result; } #region Protected Methods protected void AddSorted(FixedSOMSemanticBox box) { int i=_semanticBoxes.Count-1; for (; i>=0; i--) { if (box.CompareTo(_semanticBoxes[i]) == 1) { break; } } _semanticBoxes.Insert(i+1, box); _UpdateBoundingRect(box.BoundingRect); } protected void Add(FixedSOMSemanticBox box) { _semanticBoxes.Add(box); _UpdateBoundingRect(box.BoundingRect); } #endregion #region public Properties internal virtual FixedElement.ElementType[] ElementTypes { get { return new FixedElement.ElementType[0]; } } public List SemanticBoxes { get { return _semanticBoxes; } set { _semanticBoxes = value; } } public List FixedNodes { get { if (_fixedNodes == null) { _ConstructFixedNodes(); } return _fixedNodes; } } #endregion #region Private methods void _ConstructFixedNodes() { _fixedNodes = new List (); foreach (FixedSOMSemanticBox box in _semanticBoxes) { FixedSOMElement element = box as FixedSOMElement; if (element != null) { _fixedNodes.Add(element.FixedNode); } else { FixedSOMContainer container = box as FixedSOMContainer; Debug.Assert(container != null); List nodes = container.FixedNodes; foreach (FixedNode node in nodes) { _fixedNodes.Add(node); } } } } void _UpdateBoundingRect(Rect rect) { if (_boundingRect.IsEmpty) { _boundingRect = rect; } else { _boundingRect.Union(rect); } } #endregion Private methods //------------------------------------------------------------------- // // Protected Fields // //--------------------------------------------------------------------- #region Protected Fields protected List _semanticBoxes; protected List _fixedNodes; #endregion Protected Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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