//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region InternalMethods
/// <summary>
/// Creates the dot product of this ContentLocator and the list of
/// ContentLocatorParts. The result is n Locators where n is the number of
/// ContentLocatorParts passed in.
/// One of the resulting Locators is this ContentLocator. If there are no
/// additional ContentLocatorParts a list with just this ContentLocator (unmodified)
/// is returned.
/// </summary>
/// <param name="additionalLocatorParts">array of ContentLocatorParts</param>
/// <returns>array of Locators (one for each additional ContentLocatorPart)</returns>
internal IList <ContentLocatorBase> DotProduct(IList <ContentLocatorPart> additionalLocatorParts)
{
List <ContentLocatorBase> results = null;
// If there aren't any additional locator parts - this is basically a no-op
if (additionalLocatorParts == null || additionalLocatorParts.Count == 0)
{
results = new List <ContentLocatorBase>(1);
results.Add(this);
}
else
{
results = new List <ContentLocatorBase>(additionalLocatorParts.Count);
for (int i = 1; i < additionalLocatorParts.Count; i++)
{
ContentLocator loc = (ContentLocator)this.Clone();
loc.Parts.Add(additionalLocatorParts[i]);
results.Add(loc);
}
this.Parts.Add(additionalLocatorParts[0]);
results.Insert(0, this);
}
return(results);
}
/// <summary>
/// Reads the internal data for this ContentLocatorGroup from the reader. This method
/// is used by an XmlSerializer to deserialize a ContentLocatorGroup. To deserialize a
/// ContentLocatorGroup from Xml, use an XmlSerializer.
/// </summary>
/// <param name="reader">the reader to read internal data from</param>
/// <exception cref="ArgumentNullException">reader is null</exception>
public void ReadXml(XmlReader reader)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
// We expect no attributes on a "ContentLocatorGroup",
// so throw using the name of one of the unexpected attributes
Annotation.CheckForNonNamespaceAttribute(reader, AnnotationXmlConstants.Elements.ContentLocatorGroup);
if (!reader.IsEmptyElement)
{
reader.Read(); // Reads the start of the "ContentLocatorGroup" element
// Consume everything inside of the ContentLocatorGroup tag.
while (!(AnnotationXmlConstants.Elements.ContentLocatorGroup == reader.LocalName && XmlNodeType.EndElement == reader.NodeType))
{
// If a child node is a <ContentLocatorBase>, deserialize a ContentLocatorBase
if (AnnotationXmlConstants.Elements.ContentLocator == reader.LocalName)
{
ContentLocator locator = (ContentLocator)AnnotationResource.ListSerializer.Deserialize(reader);
_locators.Add(locator);
}
else
{
// The ContentLocatorGroup contains a child that is not a ContentLocatorBase or
// text. This isn't valid in the schema so we throw.
throw new XmlException(SR.Get(SRID.InvalidXmlContent, AnnotationXmlConstants.Elements.ContentLocatorGroup));
}
}
}
reader.Read(); // Reads the end of the "ContentLocatorGroup" element (or whole element if empty)
}
/// <summary>Returns a value that indicates whether the starting sequence of <see cref="T:System.Windows.Annotations.ContentLocatorPart" /> elements in a specified <see cref="T:System.Windows.Annotations.ContentLocator" /> are identical to those in this <see cref="T:System.Windows.Annotations.ContentLocator" />.</summary>
/// <param name="locator">The <see cref="T:System.Windows.Annotations.ContentLocator" /> with the list of <see cref="T:System.Windows.Annotations.ContentLocatorPart" /> elements to compare with this <see cref="T:System.Windows.Annotations.ContentLocator" />.</param>
/// <returns>
/// <see langword="true" /> if the starting sequence of <see cref="T:System.Windows.Annotations.ContentLocatorPart" /> elements in this <see cref="T:System.Windows.Annotations.ContentLocator" /> matches those in the specified <paramref name="locator" />; otherwise, <see langword="false" />.</returns>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="locator" /> is <see langword="null" />.</exception>
// Token: 0x06006337 RID: 25399 RVA: 0x001BE4EC File Offset: 0x001BC6EC
public bool StartsWith(ContentLocator locator)
{
if (locator == null)
{
throw new ArgumentNullException("locator");
}
Invariant.Assert(locator.Parts != null, "Locator has null Parts property.");
if (this.Parts.Count < locator.Parts.Count)
{
return(false);
}
for (int i = 0; i < locator.Parts.Count; i++)
{
ContentLocatorPart contentLocatorPart = locator.Parts[i];
ContentLocatorPart contentLocatorPart2 = this.Parts[i];
if (contentLocatorPart == null && contentLocatorPart2 != null)
{
return(false);
}
if (!contentLocatorPart.Matches(contentLocatorPart2))
{
return(false);
}
}
return(true);
}
//------------------------------------------------------
//
// Public Methods
//
//------------------------------------------------------
#region Public Methods
/// <summary>
/// Determines if this list begins with the ContentLocatorParts that
/// make up matchList. All ContentLocatorParts in matchList must
/// be present and in the same order in this list for
/// true to be returned.
/// </summary>
/// <param name="locator">the list to compare with</param>
/// <returns>
/// true if this list begins with the ContentLocatorParts in locator;
/// false otherwise. If locator is longer than this locator, will
/// return false as well.
/// </returns>
/// <exception cref="ArgumentNullException">locator is null</exception>
public bool StartsWith(ContentLocator locator)
{
if (locator == null)
{
throw new ArgumentNullException("locator");
}
Invariant.Assert(locator.Parts != null, "Locator has null Parts property.");
// If this locator is shorter than matchList, then this can't contain matchList.
#pragma warning suppress 6506 // Invariant.Assert(locator.Parts != null)
if (this.Parts.Count < locator.Parts.Count)
{
return(false);
}
for (int locatorPartIndex = 0; locatorPartIndex < locator.Parts.Count; locatorPartIndex++)
{
ContentLocatorPart left = locator.Parts[locatorPartIndex];
ContentLocatorPart right = this.Parts[locatorPartIndex];
// ContentLocator parts can be null so check for that case here
if (left == null && right != null)
{
return(false);
}
if (!left.Matches(right))
{
return(false);
}
}
return(true);
}
// Token: 0x060062D4 RID: 25300 RVA: 0x001BBA20 File Offset: 0x001B9C20
private static IList <IAttachedAnnotation> GetSpannedAnnotationsForFixed(AnnotationService service, int startPage, int endPage)
{
Invariant.Assert(service != null, "Need non-null service to get spanned annotations for fixed content.");
FixedPageProcessor fixedPageProcessor = service.LocatorManager.GetSubTreeProcessorForLocatorPart(FixedPageProcessor.CreateLocatorPart(0)) as FixedPageProcessor;
Invariant.Assert(fixedPageProcessor != null, "FixedPageProcessor should be available if we are processing fixed content.");
List <IAttachedAnnotation> result = null;
List <Annotation> annotations = new List <Annotation>();
try
{
fixedPageProcessor.UseLogicalTree = true;
for (int i = startPage; i <= endPage; i++)
{
ContentLocator contentLocator = new ContentLocator();
contentLocator.Parts.Add(FixedPageProcessor.CreateLocatorPart(i));
AnnotationHelper.AddRange(annotations, service.Store.GetAnnotations(contentLocator));
}
result = AnnotationHelper.ResolveAnnotations(service, annotations);
}
finally
{
fixedPageProcessor.UseLogicalTree = false;
}
return(result);
}
/// <summary>Deserializes the <see cref="T:System.Windows.Annotations.ContentLocatorGroup" /> from a specified <see cref="T:System.Xml.XmlReader" />.</summary>
/// <param name="reader">The XML reader to use to deserialize the <see cref="T:System.Windows.Annotations.ContentLocatorGroup" />.</param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="reader" /> is <see langword="null" />.</exception>
/// <exception cref="T:System.Xml.XmlException">The serialized XML for the <see cref="T:System.Windows.Annotations.ContentLocatorGroup" /> is not valid.</exception>
// Token: 0x06006345 RID: 25413 RVA: 0x001BECA4 File Offset: 0x001BCEA4
public void ReadXml(XmlReader reader)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
Annotation.CheckForNonNamespaceAttribute(reader, "ContentLocatorGroup");
if (!reader.IsEmptyElement)
{
reader.Read();
while (!("ContentLocatorGroup" == reader.LocalName) || XmlNodeType.EndElement != reader.NodeType)
{
if (!("ContentLocator" == reader.LocalName))
{
throw new XmlException(SR.Get("InvalidXmlContent", new object[]
{
"ContentLocatorGroup"
}));
}
ContentLocator item = (ContentLocator)AnnotationResource.ListSerializer.Deserialize(reader);
this._locators.Add(item);
}
}
reader.Read();
}
// Token: 0x0600633F RID: 25407 RVA: 0x001BEB14 File Offset: 0x001BCD14
internal void Append(ContentLocator other)
{
Invariant.Assert(other != null, "Parameter 'other' is null.");
foreach (ContentLocatorPart contentLocatorPart in other.Parts)
{
this.Parts.Add((ContentLocatorPart)contentLocatorPart.Clone());
}
}
/// <summary>
/// Merges this ContentLocator with a ContentLocatorBase. If other is a
/// ContentLocatorGroup, each of its Locators are added to clones of
/// this ContentLocatorBase and are added to a new ContentLocatorGroup which is
/// returned. If other is a ContentLocatorBase, its appended to this
/// ContentLocatorBase and this ContentLocatorBase is returned.
/// Both operation modify this ContentLocatorBase.
/// </summary>
/// <param name="other">the ContentLocatorBase to merge with</param>
/// <returns>a ContentLocatorBase containing the final merged product</returns>
internal override ContentLocatorBase Merge(ContentLocatorBase other)
{
if (other == null)
{
return(this);
}
ContentLocatorGroup locatorGroup = other as ContentLocatorGroup;
if (locatorGroup != null)
{
ContentLocatorGroup newGroup = new ContentLocatorGroup();
ContentLocator temp = null;
// Create n-1 clones of this LPS and append all but one
// LPSs in the set to the clones, adding the clones to a
// new ContentLocatorGroup
foreach (ContentLocator loc in locatorGroup.Locators)
{
if (temp == null)
{
temp = loc;
}
else
{
ContentLocator clone = (ContentLocator)this.Clone();
clone.Append(loc);
newGroup.Locators.Add(clone);
}
}
// Finally, add the remaining LPS in the set to this LPS
// and add this to the new ContentLocatorGroup
if (temp != null)
{
this.Append(temp);
newGroup.Locators.Add(this);
}
if (newGroup.Locators.Count == 0)
{
return(this);
}
else
{
return(newGroup);
}
}
else
{
// Safe cast - ContentLocator only has two subclasses
this.Append((ContentLocator)other);
return(this);
}
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
/// <summary>
/// Merges the ContentLocatorGroup with a ContentLocatorBase. If other is a ContentLocatorBase,
/// it is added to the end of every ContentLocatorBase in this ContentLocatorGroup.
/// If other is a ContentLocatorGroup, then each ContentLocatorBase in it must be added to
/// each ContentLocatorBase (or a clone) in this ContentLocatorGroup. The result is this
/// ContentLocatorGroup will contain n*m ContentLocatorBase.
/// In both cases, this ContentLocatorGroup is modified.
/// </summary>
/// <param name="other">other ContentLocatorBase to merge with</param>
/// <returns>this ContentLocatorGroup</returns>
internal override ContentLocatorBase Merge(ContentLocatorBase other)
{
if (other == null)
{
return(this);
}
ContentLocator firstRight = null;
ContentLocatorGroup locatorGroup = other as ContentLocatorGroup;
if (locatorGroup != null)
{
List <ContentLocatorBase> tempList = new List <ContentLocatorBase>(locatorGroup.Locators.Count * (this.Locators.Count - 1));
foreach (ContentLocator left in this.Locators)
{
foreach (ContentLocator right in locatorGroup.Locators)
{
if (firstRight == null)
{
firstRight = right;
}
else
{
ContentLocator clone = (ContentLocator)left.Clone();
clone.Append(right);
tempList.Add(clone);
}
}
// No need to clone or add here - just use the locator
// already in the ContentLocatorGroup
left.Append(firstRight);
firstRight = null;
}
foreach (ContentLocator list in tempList)
{
this.Locators.Add(list);
}
}
else
{
ContentLocator otherLoc = other as ContentLocator;
Invariant.Assert(otherLoc != null, "other should be of type ContentLocator"); // Only other possible type for the ContentLocatorBase
foreach (ContentLocator loc in this.Locators)
{
loc.Append(otherLoc);
}
}
return(this);
}
private IList <IAttachedAnnotation> ProcessAnnotations(DocumentPageView dpv)
{
if (dpv == null)
{
throw new ArgumentNullException("dpv");
}
IList <IAttachedAnnotation> attachedAnnotations = new List <IAttachedAnnotation>();
IList <ContentLocatorBase> locators = _locatorManager.GenerateLocators(dpv);
if (locators.Count > 0)
{
// LocatorBases for a single node should always be Locators
ContentLocator[] lists = new ContentLocator[locators.Count];
locators.CopyTo(lists, 0);
IList <Annotation> annotations = _annotationStore.GetAnnotations(lists[0]);
foreach (ContentLocator locator in locators)
{
if (locator.Parts[locator.Parts.Count - 1].NameValuePairs.ContainsKey(TextSelectionProcessor.IncludeOverlaps))
{
locator.Parts.RemoveAt(locator.Parts.Count - 1);
}
}
foreach (Annotation annotation in annotations)
{
foreach (AnnotationResource anchor in annotation.Anchors)
{
foreach (ContentLocatorBase locator in anchor.ContentLocators)
{
AttachmentLevel attachmentLevel;
object attachedAnchor = _locatorManager.FindAttachedAnchor(dpv, lists, locator, out attachmentLevel);
if (attachmentLevel != AttachmentLevel.Unresolved)
{
Invariant.Assert(VisualTreeHelper.GetChildrenCount(dpv) == 1, "DocumentPageView has no visual children.");
DependencyObject firstElement = VisualTreeHelper.GetChild(dpv, 0);
attachedAnnotations.Add(new AttachedAnnotation(_locatorManager, annotation, anchor, attachedAnchor, attachmentLevel, firstElement as DocumentPageHost));
// Only process one locator per resource
break;
}
}
}
}
}
return(attachedAnnotations);
}
// Token: 0x06006347 RID: 25415 RVA: 0x001BED58 File Offset: 0x001BCF58
internal override ContentLocatorBase Merge(ContentLocatorBase other)
{
if (other == null)
{
return(this);
}
ContentLocator contentLocator = null;
ContentLocatorGroup contentLocatorGroup = other as ContentLocatorGroup;
if (contentLocatorGroup != null)
{
List <ContentLocatorBase> list = new List <ContentLocatorBase>(contentLocatorGroup.Locators.Count * (this.Locators.Count - 1));
foreach (ContentLocator contentLocator2 in this.Locators)
{
foreach (ContentLocator contentLocator3 in contentLocatorGroup.Locators)
{
if (contentLocator == null)
{
contentLocator = contentLocator3;
}
else
{
ContentLocator contentLocator4 = (ContentLocator)contentLocator2.Clone();
contentLocator4.Append(contentLocator3);
list.Add(contentLocator4);
}
}
contentLocator2.Append(contentLocator);
contentLocator = null;
}
using (List <ContentLocatorBase> .Enumerator enumerator3 = list.GetEnumerator())
{
while (enumerator3.MoveNext())
{
ContentLocatorBase contentLocatorBase = enumerator3.Current;
ContentLocator item = (ContentLocator)contentLocatorBase;
this.Locators.Add(item);
}
return(this);
}
}
ContentLocator contentLocator5 = other as ContentLocator;
Invariant.Assert(contentLocator5 != null, "other should be of type ContentLocator");
foreach (ContentLocator contentLocator6 in this.Locators)
{
contentLocator6.Append(contentLocator5);
}
return(this);
}
// Token: 0x0600629B RID: 25243 RVA: 0x001BAA28 File Offset: 0x001B8C28
private IList <IAttachedAnnotation> ProcessAnnotations(DocumentPageView dpv)
{
if (dpv == null)
{
throw new ArgumentNullException("dpv");
}
IList <IAttachedAnnotation> list = new List <IAttachedAnnotation>();
IList <ContentLocatorBase> list2 = this._locatorManager.GenerateLocators(dpv);
if (list2.Count > 0)
{
ContentLocator[] array = new ContentLocator[list2.Count];
list2.CopyTo(array, 0);
IList <Annotation> annotations = this._annotationStore.GetAnnotations(array[0]);
foreach (ContentLocatorBase contentLocatorBase in list2)
{
ContentLocator contentLocator = (ContentLocator)contentLocatorBase;
if (contentLocator.Parts[contentLocator.Parts.Count - 1].NameValuePairs.ContainsKey("IncludeOverlaps"))
{
contentLocator.Parts.RemoveAt(contentLocator.Parts.Count - 1);
}
}
foreach (Annotation annotation in annotations)
{
foreach (AnnotationResource annotationResource in annotation.Anchors)
{
foreach (ContentLocatorBase locator in annotationResource.ContentLocators)
{
AttachmentLevel attachmentLevel;
object attachedAnchor = this._locatorManager.FindAttachedAnchor(dpv, array, locator, out attachmentLevel);
if (attachmentLevel != AttachmentLevel.Unresolved)
{
Invariant.Assert(VisualTreeHelper.GetChildrenCount(dpv) == 1, "DocumentPageView has no visual children.");
DependencyObject child = VisualTreeHelper.GetChild(dpv, 0);
list.Add(new AttachedAnnotation(this._locatorManager, annotation, annotationResource, attachedAnchor, attachmentLevel, child as DocumentPageHost));
break;
}
}
}
}
}
return(list);
}
/// <summary>Creates a modifiable deep copy clone of this <see cref="T:System.Windows.Annotations.ContentLocator" />.</summary>
/// <returns>A modifiable deep copy clone of this <see cref="T:System.Windows.Annotations.ContentLocator" />.</returns>
// Token: 0x06006338 RID: 25400 RVA: 0x001BE578 File Offset: 0x001BC778
public override object Clone()
{
ContentLocator contentLocator = new ContentLocator();
foreach (ContentLocatorPart contentLocatorPart in this.Parts)
{
ContentLocatorPart item;
if (contentLocatorPart != null)
{
item = (ContentLocatorPart)contentLocatorPart.Clone();
}
else
{
item = null;
}
contentLocator.Parts.Add(item);
}
return(contentLocator);
}
/// <summary>
/// Creates a deep copy of this list. A new list with a clone of
/// every ContentLocatorPart in this list, in the same order, is returned.
/// Never returns null.
/// </summary>
/// <returns>a deep copy of this list</returns>
public override Object Clone()
{
ContentLocator clone = new ContentLocator();
ContentLocatorPart newPart = null;
foreach (ContentLocatorPart part in this.Parts)
{
if (part != null)
{
newPart = (ContentLocatorPart)part.Clone();
}
else
{
newPart = null;
}
clone.Parts.Add(newPart);
}
return(clone);
}
// Token: 0x0600633E RID: 25406 RVA: 0x001BEA54 File Offset: 0x001BCC54
internal override ContentLocatorBase Merge(ContentLocatorBase other)
{
if (other == null)
{
return(this);
}
ContentLocatorGroup contentLocatorGroup = other as ContentLocatorGroup;
if (contentLocatorGroup == null)
{
this.Append((ContentLocator)other);
return(this);
}
ContentLocatorGroup contentLocatorGroup2 = new ContentLocatorGroup();
ContentLocator contentLocator = null;
foreach (ContentLocator contentLocator2 in contentLocatorGroup.Locators)
{
if (contentLocator == null)
{
contentLocator = contentLocator2;
}
else
{
ContentLocator contentLocator3 = (ContentLocator)this.Clone();
contentLocator3.Append(contentLocator2);
contentLocatorGroup2.Locators.Add(contentLocator3);
}
}
if (contentLocator != null)
{
this.Append(contentLocator);
contentLocatorGroup2.Locators.Add(this);
}
if (contentLocatorGroup2.Locators.Count == 0)
{
return(this);
}
return(contentLocatorGroup2);
}
// Token: 0x0600633D RID: 25405 RVA: 0x001BE9CC File Offset: 0x001BCBCC
internal IList <ContentLocatorBase> DotProduct(IList <ContentLocatorPart> additionalLocatorParts)
{
List <ContentLocatorBase> list;
if (additionalLocatorParts == null || additionalLocatorParts.Count == 0)
{
list = new List <ContentLocatorBase>(1);
list.Add(this);
}
else
{
list = new List <ContentLocatorBase>(additionalLocatorParts.Count);
for (int i = 1; i < additionalLocatorParts.Count; i++)
{
ContentLocator contentLocator = (ContentLocator)this.Clone();
contentLocator.Parts.Add(additionalLocatorParts[i]);
list.Add(contentLocator);
}
this.Parts.Add(additionalLocatorParts[0]);
list.Insert(0, this);
}
return(list);
}
// Token: 0x060062D3 RID: 25299 RVA: 0x001BB8C4 File Offset: 0x001B9AC4
private static IList <IAttachedAnnotation> GetSpannedAnnotationsForFlow(AnnotationService service, ITextSelection selection)
{
Invariant.Assert(service != null);
ITextPointer textPointer = selection.Start.CreatePointer();
ITextPointer textPointer2 = selection.End.CreatePointer();
textPointer.MoveToNextInsertionPosition(LogicalDirection.Backward);
textPointer2.MoveToNextInsertionPosition(LogicalDirection.Forward);
ITextRange selection2 = new TextRange(textPointer, textPointer2);
IList <ContentLocatorBase> list = service.LocatorManager.GenerateLocators(selection2);
Invariant.Assert(list != null && list.Count > 0);
TextSelectionProcessor textSelectionProcessor = service.LocatorManager.GetSelectionProcessor(typeof(TextRange)) as TextSelectionProcessor;
TextSelectionProcessor textSelectionProcessor2 = service.LocatorManager.GetSelectionProcessor(typeof(TextAnchor)) as TextSelectionProcessor;
Invariant.Assert(textSelectionProcessor != null, "TextSelectionProcessor should be available for TextRange if we are processing flow content.");
Invariant.Assert(textSelectionProcessor2 != null, "TextSelectionProcessor should be available for TextAnchor if we are processing flow content.");
IList <IAttachedAnnotation> result = null;
try
{
textSelectionProcessor.Clamping = false;
textSelectionProcessor2.Clamping = false;
ContentLocator contentLocator = list[0] as ContentLocator;
Invariant.Assert(contentLocator != null, "Locators for selection in Flow should always be ContentLocators. ContentLocatorSets not supported.");
contentLocator.Parts[contentLocator.Parts.Count - 1].NameValuePairs.Add("IncludeOverlaps", bool.TrueString);
IList <Annotation> annotations = service.Store.GetAnnotations(contentLocator);
result = AnnotationHelper.ResolveAnnotations(service, annotations);
}
finally
{
textSelectionProcessor.Clamping = true;
textSelectionProcessor2.Clamping = true;
}
return(result);
}
/// <summary>
/// Determines if the locator matches any of the prefixes, and if so, returns
/// the length of the prefix that was matched. Resolving of the locator can
/// begin with the first locator part after those that were matched by the prefix.
/// </summary>
/// <param name="prefixes">locators representing prefixes to match</param>
/// <param name="locator">locator to find a match for</param>
/// <param name="matched">whether or not a match was found</param>
/// <returns>index of the next locator part to resolve</returns>
private int FindMatchingPrefix(ContentLocator[] prefixes, ContentLocatorBase locator, out bool matched)
{
matched = true;
int locatorPartIdx = 0;
ContentLocator realLocator = locator as ContentLocator;
// If we have a locator set or there are no prefixes then we
// are 'matched' implicitly.
if (realLocator != null && prefixes != null && prefixes.Length > 0)
{
matched = false;
foreach (ContentLocator prefix in prefixes)
{
if (realLocator.StartsWith(prefix))
{
locatorPartIdx = prefix.Parts.Count;
matched = true;
break;
}
}
}
return locatorPartIdx;
}
/// <summary>
/// Searches the element subtree for a node that maps to the
/// passed in ContentLocatorBase.
/// Note: For LocatorGroups the startNode, offset, and prefixes
/// are ignored. Due to the nature of LocatorGroups, we always
/// start searching at the node with the service enabled, with
/// the first locator part, ignoring all prefixes.
/// </summary>
/// <param name="startNode">the root of the subtree to search</param>
/// <param name="prefixes">locators for the root of the subtree</param>
/// <param name="locator">the ContentLocatorBase we are resolving to an anchor</param>
/// <param name="attachmentLevel">type of the anchor returned</param>
/// <returns>the anchor for the passed in ContentLocatorBase; will return null if no match can be found</returns>
/// <exception cref="ArgumentNullException">startNode or locator is null</exception>
internal Object FindAttachedAnchor(DependencyObject startNode, ContentLocator[] prefixes, ContentLocatorBase locator, out AttachmentLevel attachmentLevel)
{
if (startNode == null)
throw new ArgumentNullException("startNode");
if (locator == null)
throw new ArgumentNullException("locator");
// Set it to unresolved initially
attachmentLevel = AttachmentLevel.Unresolved;
Object anchor = null;
bool matched = true;
int locatorPartIdx = FindMatchingPrefix(prefixes, locator, out matched);
// The annotation's locator starts with at least
// one of the locators for the local root.
if (matched)
{
ContentLocator realLocator = locator as ContentLocator;
if (realLocator == null || locatorPartIdx < realLocator.Parts.Count)
{
// Now we try to resolve. If any locator parts were matched to the startNode we want to
// start resolving with its children, skipping a revisit to the startNode.
anchor = InternalResolveLocator(locator, locatorPartIdx, startNode, locatorPartIdx != 0 /*skipStartNode*/, out attachmentLevel);
}
// If nothing was returned, we base our return values on the results
// of matching against the local root.
if (attachmentLevel == AttachmentLevel.Unresolved && locatorPartIdx > 0)
{
if (locatorPartIdx == 0)
{
attachmentLevel = AttachmentLevel.Unresolved;
}
// If there was anything left to resolve then its incomplete
//
else if (realLocator != null && locatorPartIdx < realLocator.Parts.Count)
{
attachmentLevel = AttachmentLevel.Incomplete;
anchor = startNode;
}
// otherwise its fully resolved
else
{
attachmentLevel = AttachmentLevel.Full;
anchor = startNode;
}
}
}
return anchor;
}
/// <summary>
/// Called by processors when they've encountered content in the tree
/// that should have annotations processed for it. This is a low-level
/// method that will get called several times during the algorithm for
/// loading annotations.
/// </summary>
/// <param name="node">the tree node that needs to be processed</param>
/// <returns>list of IAttachedAnnotations that were loaded for 'node';
/// the list will never be null but may be empty</returns>
/// <exception cref="ArgumentNullException">node is null</exception>
/// <exception cref="SystemException">no AnnotationStore is available from
/// the element tree</exception>
public IList<IAttachedAnnotation> ProcessAnnotations(DependencyObject node)
{
VerifyAccess();
if (node == null)
throw new ArgumentNullException("node");
IList<IAttachedAnnotation> attachedAnnotations = new List<IAttachedAnnotation>();
IList<ContentLocatorBase> locators = GenerateLocators(node);
if(locators.Count > 0)
{
AnnotationStore store = null;
if (_internalStore != null)
{
store = _internalStore;
}
else
{
AnnotationService service = AnnotationService.GetService(node);
if (service == null || !service.IsEnabled)
{
throw new InvalidOperationException(SR.Get(SRID.AnnotationServiceNotEnabled));
}
store = service.Store;
}
// LocatorBases for a single node should always be Locators
ContentLocator[] lists = new ContentLocator[locators.Count];
locators.CopyTo(lists, 0);
IList<Annotation> annotations = store.GetAnnotations(lists[0]);
foreach (ContentLocator locator in locators)
{
if (locator.Parts[locator.Parts.Count - 1].NameValuePairs.ContainsKey(TextSelectionProcessor.IncludeOverlaps))
{
locator.Parts.RemoveAt(locator.Parts.Count - 1);
}
}
foreach (Annotation annotation in annotations)
{
foreach (AnnotationResource anchor in annotation.Anchors)
{
foreach(ContentLocatorBase locator in anchor.ContentLocators)
{
AttachmentLevel attachmentLevel;
object attachedAnchor = FindAttachedAnchor(node, lists, locator, out attachmentLevel);
if(attachmentLevel != AttachmentLevel.Unresolved)
{
Debug.Assert(attachedAnchor != null, "AttachedAnchor cannot be null if attachmentLevel is not Unresolved.");
attachedAnnotations.Add(new AttachedAnnotation(this, annotation, anchor, attachedAnchor, attachmentLevel));
// Only process one locator per resource
break;
}
}
}
}
}
return attachedAnnotations;
}
/// <summary>
/// Resolves a single locator starting at the given startNode.
/// Sets the selection and attachmentLevel if necessary.
/// </summary>
/// <param name="selection">object representing the content that has been resolved
/// so far; updated if the locator passed in is resolved</param>
/// <param name="attachmentLevel">attachmentLevel of content that has been resolved
/// so far; updated based on the resolution of the passed in locator</param>
/// <param name="attemptedLevel">the level that is represented by this locator -
/// start, middle or end</param>
/// <param name="locator">the locator to resolve</param>
/// <param name="offset">the offset into the locator to start the resolution at</param>
/// <param name="startNode">the node to start the resolution at</param>
/// <param name="skipStartNode">whether or not the start node should be looked at</param>
/// <returns>the data representing the resolution of the single locator; used for
/// special cases by calling code to override results from this method</returns>
private ResolvingLocatorState ResolveSingleLocator(ref object selection, ref AttachmentLevel attachmentLevel, AttachmentLevel attemptedLevel, ContentLocator locator, int offset, DependencyObject startNode, bool skipStartNode)
{
ResolvingLocatorState data = new ResolvingLocatorState();
data.LocatorPartIndex = offset;
data.ContentLocatorBase = locator;
PrePostDescendentsWalker<ResolvingLocatorState> walker = new PrePostDescendentsWalker<ResolvingLocatorState>(TreeWalkPriority.VisualTree, ResolveLocatorPart, TerminateResolve, data);
walker.StartWalk(startNode, skipStartNode);
if (data.AttachmentLevel == AttachmentLevel.Full && data.AttachedAnchor != null)
{
// Merge the results with pre-existing selection
if (selection != null)
{
SelectionProcessor selProcessor = GetSelectionProcessor(selection.GetType());
object newSelection;
if (selProcessor != null)
{
if (selProcessor.MergeSelections(selection, data.AttachedAnchor, out newSelection))
{
selection = newSelection;
}
else
{
// If we can't merge, them this locator isn't included in final results so we
// we turn off the level that we are attempting to resolve
attachmentLevel &= ~attemptedLevel;
}
}
else
{
// If not selection processor, the locator can't be resolved so
// we turn off the level that we were attempting to resolve
attachmentLevel &= ~attemptedLevel;
}
}
else
{
selection = data.AttachedAnchor;
}
}
else
{
// ContentLocator didn't fully resolve so we turn off the level
// that we were attempting to resolve
attachmentLevel &= ~attemptedLevel;
}
return data;
}
/// <summary>
/// Creates a deep copy of this list. A new list with a clone of
/// every ContentLocatorPart in this list, in the same order, is returned.
/// Never returns null.
/// </summary>
/// <returns>a deep copy of this list</returns>
public override Object Clone()
{
ContentLocator clone = new ContentLocator();
ContentLocatorPart newPart = null;
foreach (ContentLocatorPart part in this.Parts)
{
if (part != null)
newPart = (ContentLocatorPart)part.Clone();
else
newPart = null;
clone.Parts.Add(newPart);
}
return clone;
}
/// <summary>
/// Appends a ContentLocator to this ContentLocator. The passed in
/// ContentLocator is not modified in anyway. Its ContentLocatorParts are cloned.
/// </summary>
/// <param name="other">locator to append</param>
internal void Append(ContentLocator other)
{
Invariant.Assert(other != null, "Parameter 'other' is null.");
foreach(ContentLocatorPart part in other.Parts)
{
this.Parts.Add((ContentLocatorPart)part.Clone());
}
}
private IList<IAttachedAnnotation> ProcessAnnotations(DocumentPageView dpv)
{
if (dpv == null)
throw new ArgumentNullException("dpv");
IList<IAttachedAnnotation> attachedAnnotations = new List<IAttachedAnnotation>();
IList<ContentLocatorBase> locators = _locatorManager.GenerateLocators(dpv);
if (locators.Count > 0)
{
// LocatorBases for a single node should always be Locators
ContentLocator[] lists = new ContentLocator[locators.Count];
locators.CopyTo(lists, 0);
IList<Annotation> annotations = _annotationStore.GetAnnotations(lists[0]);
foreach (ContentLocator locator in locators)
{
if (locator.Parts[locator.Parts.Count - 1].NameValuePairs.ContainsKey(TextSelectionProcessor.IncludeOverlaps))
{
locator.Parts.RemoveAt(locator.Parts.Count - 1);
}
}
foreach (Annotation annotation in annotations)
{
foreach (AnnotationResource anchor in annotation.Anchors)
{
foreach (ContentLocatorBase locator in anchor.ContentLocators)
{
AttachmentLevel attachmentLevel;
object attachedAnchor = _locatorManager.FindAttachedAnchor(dpv, lists, locator, out attachmentLevel);
if (attachmentLevel != AttachmentLevel.Unresolved)
{
Invariant.Assert(VisualTreeHelper.GetChildrenCount(dpv) == 1, "DocumentPageView has no visual children.");
DependencyObject firstElement = VisualTreeHelper.GetChild(dpv, 0);
attachedAnnotations.Add(new AttachedAnnotation(_locatorManager, annotation, anchor, attachedAnchor, attachmentLevel, firstElement as DocumentPageHost));
// Only process one locator per resource
break;
}
}
}
}
}
return attachedAnnotations;
}
/// <summary>
/// Queries the store map for annotations that have an anchor
/// that contains a locator that begins with the locator parts
/// in anchorLocator.
/// </summary>
/// <param name="anchorLocator">the locator we are looking for</param>
/// <returns>
/// A list of annotations that have locators in their anchors
/// starting with the same locator parts list as of the input locator
/// If no such annotations an empty list will be returned. The method
/// never returns null.
/// </returns>
public Dictionary<Guid, Annotation> FindAnnotations(ContentLocator anchorLocator)
{
if (anchorLocator == null)
throw new ArgumentNullException("locator");
Dictionary<Guid, Annotation> annotations = new Dictionary<Guid, Annotation>();
//
Dictionary<Guid, CachedAnnotation>.ValueCollection.Enumerator annotationsEnumerator = _currentAnnotations.Values.GetEnumerator();
while (annotationsEnumerator.MoveNext())
{
Annotation annotation = annotationsEnumerator.Current.Annotation;
bool matchesQuery = false;
foreach (AnnotationResource resource in annotation.Anchors)
{
foreach (ContentLocatorBase locator in resource.ContentLocators)
{
ContentLocator ContentLocator = locator as ContentLocator;
if (ContentLocator != null)
{
if (ContentLocator.StartsWith(anchorLocator))
{
matchesQuery = true;
}
}
else
{
ContentLocatorGroup ContentLocatorGroup = locator as ContentLocatorGroup;
if (ContentLocatorGroup != null)
{
foreach(ContentLocator list in ContentLocatorGroup.Locators)
{
if (list.StartsWith(anchorLocator))
{
matchesQuery = true;
break;
}
}
}
}
if (matchesQuery)
{
annotations.Add(annotation.Id, annotation);
break;
}
}
if (matchesQuery)
break;
}
}
return annotations;
}
/// <summary> /// Queries the AnnotationStore for annotations that have an anchor /// that contains a locator that begins with the locator parts /// in anchorLocator. /// </summary> /// <param name="anchorLocator">the locator we are looking for</param> /// <returns> /// A list of annotations that have locators in their anchors /// starting with the same locator parts list as of the input locator /// Can return an empty list, but never null. /// </returns> /// <exception cref="ObjectDisposedException">if object has been disposed</exception> public abstract IList<Annotation> GetAnnotations(ContentLocator anchorLocator);
/// <summary>
/// Generates a locator part list identifying node. If node has a
/// value for DataIdProperty, a locator with a single locator part
/// containing the id value is returned. Otherwise null is returned.
/// </summary>
/// <param name="node">the node to generate a locator for</param>
/// <param name="continueGenerating">specifies whether or not generating should
/// continue for the rest of the path; always set to true</param>
/// <returns>if node has a value for DataIdProperty, a locator with a
/// single locator part containing the id value; null otherwise
/// </returns>
/// <exception cref="ArgumentNullException">node is null</exception>
public override ContentLocator GenerateLocator(PathNode node, out bool continueGenerating)
{
if (node == null)
throw new ArgumentNullException("node");
continueGenerating = true;
ContentLocator locator = null;
ContentLocatorPart newLocatorPart = CreateLocatorPart(node.Node);
if (newLocatorPart != null)
{
locator = new ContentLocator();
locator.Parts.Add(newLocatorPart);
}
return locator;
}
//------------------------------------------------------
//
// Public Methods
//
//------------------------------------------------------
#region Public Methods
/// <summary>
/// Determines if this list begins with the ContentLocatorParts that
/// make up matchList. All ContentLocatorParts in matchList must
/// be present and in the same order in this list for
/// true to be returned.
/// </summary>
/// <param name="locator">the list to compare with</param>
/// <returns>
/// true if this list begins with the ContentLocatorParts in locator;
/// false otherwise. If locator is longer than this locator, will
/// return false as well.
/// </returns>
/// <exception cref="ArgumentNullException">locator is null</exception>
public bool StartsWith(ContentLocator locator)
{
if (locator == null)
{
throw new ArgumentNullException("locator");
}
Invariant.Assert(locator.Parts != null, "Locator has null Parts property.");
// If this locator is shorter than matchList, then this can't contain matchList.
#pragma warning suppress 6506 // Invariant.Assert(locator.Parts != null)
if (this.Parts.Count < locator.Parts.Count)
{
return false;
}
for (int locatorPartIndex = 0; locatorPartIndex < locator.Parts.Count; locatorPartIndex++)
{
ContentLocatorPart left = locator.Parts[locatorPartIndex];
ContentLocatorPart right = this.Parts[locatorPartIndex];
// ContentLocator parts can be null so check for that case here
if (left == null && right != null)
{
return false;
}
if (!left.Matches(right))
{
return false;
}
}
return true;
}
/// <summary>
/// Generates locators identifying 'chunks'. If node is a chunk,
/// generates a locator with a single locator part containing a
/// fingerprint of the chunk. Otherwise null is returned.
/// </summary>
/// <param name="node">the node to generate a locator for</param>
/// <param name="continueGenerating">return flag indicating whether the search
/// should continue (presumably because the search was not exhaustive).
/// This processor will always return true because it is possible to locate
/// parts of the node (if it is FixedPage or FixedPageProxy)</param>
/// <returns>if node is a FixedPage or FixedPageProxy, a ContentLocator
/// with a single locator part containing the page number; null if node is not
/// FixedPage or FixedPageProxy </returns>
/// <exception cref="ArgumentNullException">node is null</exception>
/// <exception cref="ArgumentException">node points to a Document Page View which
/// doesn't contain a FixedDocumentPage</exception>
public override ContentLocator GenerateLocator(PathNode node, out bool continueGenerating)
{
if (node == null)
throw new ArgumentNullException("node");
// Initial value
continueGenerating = true;
ContentLocator locator = null;
DocumentPageView dpv = node.Node as DocumentPageView;
int pageNb = -1;
if (dpv != null)
{
// Only produce locator parts for FixedDocumentPages
if (dpv.DocumentPage is FixedDocumentPage || dpv.DocumentPage is FixedDocumentSequenceDocumentPage)
{
pageNb = dpv.PageNumber;
}
}
else
{
FixedTextSelectionProcessor.FixedPageProxy fPage = node.Node as FixedTextSelectionProcessor.FixedPageProxy;
if (fPage != null)
{
pageNb = fPage.Page;
}
}
if (pageNb >= 0)
{
locator = new ContentLocator();
ContentLocatorPart locatorPart = CreateLocatorPart(pageNb);
locator.Parts.Add(locatorPart);
}
return locator;
}
/// <summary>
/// Queries the Xml stream for annotations that have an anchor
/// that contains a locator that begins with the locator parts
/// in anchorLocator.
/// </summary>
/// <param name="anchorLocator">the locator we are looking for</param>
/// <returns>
/// A list of annotations that have locators in their anchors
/// starting with the same locator parts list as of the input locator
/// If no such annotations an empty list will be returned. The method
/// never returns null.
/// </returns>
/// <exception cref="ObjectDisposedException">if object has been Disposed</exception>
/// <exception cref="InvalidOperationException">the stream is null</exception>
public override IList<Annotation> GetAnnotations(ContentLocator anchorLocator)
{
// First we generate the XPath expression
if (anchorLocator == null)
throw new ArgumentNullException("anchorLocator");
if (anchorLocator.Parts == null)
throw new ArgumentNullException("anchorLocator.Parts");
//fire trace event
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordAnnotation, EventTrace.Event.GetAnnotationByLocBegin);
IList<Annotation> annotations = null;
try
{
string query = @"//" + AnnotationXmlConstants.Prefixes.CoreSchemaPrefix + ":" + AnnotationXmlConstants.Elements.ContentLocator;
if (anchorLocator.Parts.Count > 0)
{
query += @"/child::*[1]/self::";
for (int i = 0; i < anchorLocator.Parts.Count; i++)
{
if (anchorLocator.Parts[i] != null)
{
if (i > 0)
{
query += @"/following-sibling::";
}
string fragment = anchorLocator.Parts[i].GetQueryFragment(_namespaceManager);
if (fragment != null)
{
query += fragment;
}
else
{
query += "*";
}
}
}
}
query += @"/ancestor::" + AnnotationXmlConstants.Prefixes.CoreSchemaPrefix + ":Anchors/ancestor::" + AnnotationXmlConstants.Prefixes.CoreSchemaPrefix + ":Annotation";
annotations = InternalGetAnnotations(query, anchorLocator);
}
finally
{
//fire trace event
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordAnnotation, EventTrace.Event.GetAnnotationByLocEnd);
}
return annotations;
}
/// <summary>
/// Do the GetAnnotations work inside a lock statement for thread safety reasons
/// </summary>
/// <param name="query"></param>
/// <param name="anchorLocator"></param>
/// <returns></returns>
private IList<Annotation> InternalGetAnnotations(string query, ContentLocator anchorLocator)
{
// anchorLocator being null is handled appropriately below
Invariant.Assert(query != null, "Parameter 'query' is null.");
lock (SyncRoot)
{
CheckStatus();
List<Guid> annotationIds = FindAnnotationIds(query);
Dictionary<Guid, Annotation> annotations = null;
// Now, get the annotations in the map that satisfies the query criterion
if (anchorLocator == null)
{
annotations = _storeAnnotationsMap.FindAnnotations();
}
else
{
annotations = _storeAnnotationsMap.FindAnnotations(anchorLocator);
}
// merge both query results
return MergeAndCacheAnnotations(annotations, annotationIds);
}
}
private static IList<IAttachedAnnotation> GetSpannedAnnotationsForFixed(AnnotationService service, int startPage, int endPage)
{
Invariant.Assert(service != null, "Need non-null service to get spanned annotations for fixed content.");
FixedPageProcessor processor = service.LocatorManager.GetSubTreeProcessorForLocatorPart(FixedPageProcessor.CreateLocatorPart(0)) as FixedPageProcessor;
Invariant.Assert(processor != null, "FixedPageProcessor should be available if we are processing fixed content.");
List<IAttachedAnnotation> attachedAnnotations = null;
List<Annotation> annotations = new List<Annotation>();
try
{
// Turn resolving of non-visible anchors on
processor.UseLogicalTree = true;
// For each non-visible page, query the store for annotations on that page
for (int pageNumber = startPage; pageNumber <= endPage; pageNumber++)
{
ContentLocator locator = new ContentLocator();
locator.Parts.Add(FixedPageProcessor.CreateLocatorPart(pageNumber));
AddRange(annotations, service.Store.GetAnnotations(locator));
}
attachedAnnotations = ResolveAnnotations(service, annotations);
}
finally
{
// Turn resolving of non-visible anchors off again
processor.UseLogicalTree = false;
}
return attachedAnnotations;
}
