private void ExpandBuffer()
{
// Buffer is too smal for this amount of attributes.
Debug.Assert(writePos == readStartPos + buffer.Length, "no space to write next token");
Debug.Assert(writePos == readEndPos, "all tokens ware read");
int newMask = (mask << 1) | 1;
XmlToken[] newBuffer = new XmlToken[newMask + 1];
for (int i = readStartPos; i < writePos; i++)
{
newBuffer[i & newMask] = buffer[i & mask];
}
buffer = newBuffer;
mask = newMask;
Debug.Assert(writePos < readStartPos + buffer.Length, "we should have now space to next write token");
}
/// <summary>
/// Update the metadata tokens specified in token.
/// </summary>
private static void UpdateMetaData(XmlToken token, StickyNoteControl snc, SNCAnnotation sncAnnotation)
{
bool newCargo, newRoot;
AnnotationResource cargo;
XmlElement root;
GetCargoAndRoot(sncAnnotation, XmlToken.MetaData, out cargo, out root, out newCargo, out newRoot);
// Update Expanded
if ((token & XmlToken.IsExpanded) != 0)
{
bool expanded = snc.IsExpanded;
sncAnnotation.UpdateAttribute(root, XmlToken.IsExpanded, expanded.ToString(CultureInfo.InvariantCulture));
}
// Update Height
if ((token & XmlToken.Height) != 0)
{
Debug.Assert(snc.IsExpanded);
double height = (double)snc.GetValue(FrameworkElement.HeightProperty);
sncAnnotation.UpdateAttribute(root, XmlToken.Height, height.ToString(CultureInfo.InvariantCulture));
}
// Update Width
if ((token & XmlToken.Width) != 0)
{
Debug.Assert(snc.IsExpanded);
double width = (double)snc.GetValue(FrameworkElement.WidthProperty);
sncAnnotation.UpdateAttribute(root, XmlToken.Width, width.ToString(CultureInfo.InvariantCulture));
}
// Update Left
if ((token & XmlToken.Left) != 0)
{
double left = snc.PositionTransform.X;
// All 'left' values are persisted assuming two things:
// 1) the top-left corner (visually) of the StickyNote is the origin of its coordinate space
// 2) the positive x-axis of its parent is to the right
// This flag signals that we have a positive x-axis to the left and our
// top-right corner (visually) is our origin. So we need to flip the
// value before persisting it.
if (snc.FlipBothOrigins)
{
left = -(left + snc.Width);
}
sncAnnotation.UpdateAttribute(root, XmlToken.Left, left.ToString(CultureInfo.InvariantCulture));
}
// Update Top
if ((token & XmlToken.Top) != 0)
{
sncAnnotation.UpdateAttribute(root, XmlToken.Top, snc.PositionTransform.Y.ToString(CultureInfo.InvariantCulture));
}
// Update XOffset
if ((token & XmlToken.XOffset) != 0)
{
sncAnnotation.UpdateAttribute(root, XmlToken.XOffset, snc.XOffset.ToString(CultureInfo.InvariantCulture));
}
// Update YOffset
if ((token & XmlToken.YOffset) != 0)
{
sncAnnotation.UpdateAttribute(root, XmlToken.YOffset, snc.YOffset.ToString(CultureInfo.InvariantCulture));
}
// Update ZOrder
if ((token & XmlToken.ZOrder) != 0)
{
sncAnnotation.UpdateAttribute(root, XmlToken.ZOrder, ((IAnnotationComponent)snc).ZOrder.ToString(CultureInfo.InvariantCulture));
}
if (newRoot)
{
cargo.Contents.Add(root);
}
if (newCargo)
{
sncAnnotation._annotation.Cargos.Add(cargo);
}
}
public virtual void Write(XmlNodeType nodeType, QName name, string value)
{
Debug.Assert(writePos <= buffer.Length);
if (writePos == buffer.Length)
{
XmlToken[] temp = new XmlToken[buffer.Length * 2];
buffer.CopyTo(temp, 0);
buffer = temp;
}
Debug.Assert(writePos < buffer.Length);
XmlToken.Set(ref buffer[writePos], nodeType, name, value);
writePos++;
}
/// <summary>
/// Find the specified data in a cargo.
/// </summary>
/// <param name="token">The specified data</param>
/// <param name="cargo">The cargo which we are searhing in</param>
/// <returns>The data object or null</returns>
private static object FindContent(XmlToken token, AnnotationResource cargo)
{
object content = null;
XmlElement root = SNCAnnotation.FindRootXmlElement(token, cargo);
// If we found the root node, we should use XPath to query the node which contains the corresponding data.
// The StickyNoteControl's xml schema can be found
// in http://tabletpc/longhorn/Specs/WinFX%20StickyNoteControl%20M8.1.mht#_Toc79371211
if (root != null)
{
switch (token)
{
case XmlToken.Text:
case XmlToken.Ink:
return root;
case XmlToken.IsExpanded:
case XmlToken.ZOrder:
case XmlToken.Top:
case XmlToken.Left:
case XmlToken.XOffset:
case XmlToken.YOffset:
case XmlToken.Width:
case XmlToken.Height:
return root.GetAttributeNode(GetXmlName(token), AnnotationXmlConstants.Namespaces.BaseSchemaNamespace);
default:
Debug.Assert(false);
break;
}
}
return content;
}
// Update ink data from/to SNC.
private void UpdateContent(StickyNoteControl snc, bool updateAnnotation, XmlToken token)
{
Invariant.Assert(snc != null, "Sticky Note Control is null.");
Invariant.Assert((token & AllContents) != 0, "No token specified.");
StickyNoteContentControl contentControl = snc.Content;
// Template hasn't been applied yet. Once it has the content control will then be setup.
if (contentControl == null)
{
return;
}
// Check whether the annotation data matches the content control.
if ((token == XmlToken.Ink && contentControl.Type != StickyNoteType.Ink)
|| (token == XmlToken.Text && contentControl.Type != StickyNoteType.Text))
{
Debug.Assert(false, "The annotation data does match with the current content control in StickyNote");
return;
}
XmlElement root = null;
if (updateAnnotation)
{
// Update annotation from SNC
AnnotationResource cargo = null;
bool newRoot = false;
bool newCargo = false;
// Check if the text is empty.
if (!contentControl.IsEmpty)
{
GetCargoAndRoot(this, token, out cargo, out root, out newCargo, out newRoot);
contentControl.Save(root);
}
else
{
string cargoName = GetCargoName(token);
cargo = FindCargo(cargoName);
if (cargo != null)
{
_annotation.Cargos.Remove(cargo);
_cachedXmlElements.Remove(token);
}
}
if (newRoot)
{
Invariant.Assert(root != null, "XmlElement should have been created.");
Invariant.Assert(cargo != null, "Cargo should have been retrieved.");
cargo.Contents.Add(root);
}
if (newCargo)
{
Invariant.Assert(cargo != null, "Cargo should have been created.");
_annotation.Cargos.Add(cargo);
}
}
else
{
// Update SNC from annotation
// Check if we have the text data in the xml store.
XmlElement node = (XmlElement)FindData(token);
if (node != null)
{
contentControl.Load(node);
}
else
{
if (!contentControl.IsEmpty)
{
contentControl.Clear();
}
}
}
}
/// <summary>
/// This method will update this StickyNoteControl data based on the internal annotation variable.
/// </summary>
/// <param name="tokens">The data need to be updated</param>
private void UpdateSNCWithAnnotation(XmlToken tokens)
{
if (_sncAnnotation != null)
{
//fire trace event
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordAnnotation, EventTrace.Event.UpdateSNCWithAnnotationBegin);
// Now, we are going to update this StickyNoteControl. We will get notified for the data being changed.
// we don't want to update our internal annotation because for the data changes which are coming
// from the annotation itself. So, we lock our internal locker.
using (LockHelper.AutoLocker locker = new LockHelper.AutoLocker(InternalLocker, LockHelper.LockFlag.DataChanged))
{
SNCAnnotation.UpdateStickyNoteControl(tokens, this, _sncAnnotation);
}
//fire trace event
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordAnnotation, EventTrace.Event.UpdateSNCWithAnnotationEnd);
}
}
/// <summary>
/// The method returns the root node which contains the specified data in a cargo.
/// </summary>
/// <param name="token">The specified data</param>
/// <param name="cargo">The specified cargo</param>
/// <returns>The root node or null</returns>
private static XmlElement FindRootXmlElement(XmlToken token, AnnotationResource cargo)
{
Debug.Assert(cargo != null);
XmlElement element = null;
string xmlName = string.Empty;
// Get the xml name of the root node
switch (token)
{
case XmlToken.Text:
case XmlToken.Ink:
xmlName = GetXmlName(token);
break;
case XmlToken.MetaData:
case XmlToken.IsExpanded:
case XmlToken.Width:
case XmlToken.Height:
case XmlToken.Top:
case XmlToken.Left:
case XmlToken.XOffset:
case XmlToken.YOffset:
case XmlToken.ZOrder:
xmlName = GetXmlName(XmlToken.MetaData);
break;
default:
Debug.Assert(false);
break;
}
// Search the root in the cargo's contents.
foreach (XmlElement node in cargo.Contents)
{
if (node.Name.Equals(xmlName))
{
element = node;
break;
}
}
return element;
}
/// <summary>
/// This static method returns the Xml name for the specified token.
/// </summary>
/// <param name="token">A specified token</param>
/// <returns>The name for the Xml node</returns>
private static string GetXmlName(XmlToken token)
{
return s_xmlTokeFullNames[token];
}
/// <summary>
/// This method is called by the static constructor to set up the Xml name dictionary.
/// </summary>
/// <param name="token">A specified token</param>
private static void AddXmlTokenNames(XmlToken token)
{
// Conver the enum value to the string first.
string xmlName = token.ToString();
// Depending on the data, we add the proper prefix to the full name.
switch (token)
{
// The element names should be qualified
case XmlToken.MetaData:
case XmlToken.Text:
case XmlToken.Ink:
{
s_xmlTokeFullNames.Add(token, AnnotationXmlConstants.Prefixes.BaseSchemaPrefix + ":" + xmlName);
}
break;
//the attribute names should be local
case XmlToken.Left:
case XmlToken.Top:
case XmlToken.XOffset:
case XmlToken.YOffset:
case XmlToken.Width:
case XmlToken.Height:
case XmlToken.IsExpanded:
case XmlToken.ZOrder:
default:
{
s_xmlTokeFullNames.Add(token, xmlName);
}
break;
}
}
/// <summary>
/// Returns the AnnotationResource and the XML root for the given token from the passed in annotation.
/// If the cargo or root do not exist they are created but not added to the annotation. The newCargo
/// and newRoot flags specify whether they were created. The caller must use these to add the items
/// to the annotation after they are done with their modifications.
/// </summary>
/// <param name="annotation">the current annotation</param>
/// <param name="token">the token to be processed</param>
/// <param name="cargo">the cargo for the token</param>
/// <param name="root">the root XML element</param>
/// <param name="newCargo">means a new root and new cargo was created. the root was already added to the cargo but the cargo was not added to the annotation</param>
/// <param name="newRoot">means a new root was created. it has not been added to the cargo.</param>
private static void GetCargoAndRoot(
SNCAnnotation annotation, XmlToken token, out AnnotationResource cargo, out XmlElement root, out bool newCargo, out bool newRoot)
{
Invariant.Assert(annotation != null, "Annotation is null.");
Invariant.Assert((token & (AllValues | XmlToken.MetaData)) != 0, "No token specified.");
string cargoName = GetCargoName(token);
newRoot = false;
newCargo = false;
cargo = annotation.FindCargo(cargoName);
// Cargo exists
if (cargo != null)
{
root = FindRootXmlElement(token, cargo);
// Uncommon situation - cargo created without root XmlElement
if (root == null)
{
newRoot = true;
XmlDocument xmlDoc = new XmlDocument();
root = xmlDoc.CreateElement(GetXmlName(token), AnnotationXmlConstants.Namespaces.BaseSchemaNamespace);
// Don't add it to the cargo yet - wait until all the
// values are set on it
}
}
else
{
newCargo = true;
cargo = new AnnotationResource(cargoName);
XmlDocument xmlDoc = new XmlDocument();
root = xmlDoc.CreateElement(GetXmlName(token), AnnotationXmlConstants.Namespaces.BaseSchemaNamespace);
// Since the cargo is new, its safe to add the root to it
// No events will make it to the annotation yet
cargo.Contents.Add(root);
}
}
/// <summary>
/// Updates the value of the specified token on the specified XmlElement.
/// If the value is the same, no update is made. If the new value is null
/// the attribute is removed.
/// </summary>
private void UpdateAttribute(XmlElement root, XmlToken token, string value)
{
string name = GetXmlName(token);
XmlNode oldValue = root.GetAttributeNode(name, AnnotationXmlConstants.Namespaces.BaseSchemaNamespace);
if (oldValue == null)
{
if (value == null)
return;
else
root.SetAttribute(name, AnnotationXmlConstants.Namespaces.BaseSchemaNamespace, value);
}
else
{
if (value == null)
root.RemoveAttribute(name, AnnotationXmlConstants.Namespaces.BaseSchemaNamespace);
else if (oldValue.Value != value)
root.SetAttribute(name, AnnotationXmlConstants.Namespaces.BaseSchemaNamespace, value);
}
}
/// <summary>
/// Find the specified Annotation data
/// </summary>
/// <param name="token">A flag which is corresponding to the annotation data</param>
/// <returns>The annotation data or null</returns>
private object FindData(XmlToken token)
{
// Assume that we can't find any thing.
object ret = null;
// First, check if we have the data cached.
if (_cachedXmlElements.ContainsKey(token))
{
ret = _cachedXmlElements[token];
}
else
{
// Then, we try to search the data in the current annotation.
AnnotationResource cargo = FindCargo(GetCargoName(token));
if (cargo != null)
{
ret = SNCAnnotation.FindContent(token, cargo);
// If we found the data in annotation, we go ahead cache it.
if (ret != null)
{
_cachedXmlElements.Add(token, ret);
}
}
}
return ret;
}
/// <summary>
/// This static method will update a StickyNoteControl object with the specified data in an Annotation
/// </summary>
/// <param name="token">A flag which indicates the data needs to be updated. The flag can be combinated with the any valid bits.</param>
/// <param name="snc">A StickyNoteControl instance</param>
/// <param name="sncAnnotation">An SNCAnnotation object which contains a CAF annotation object</param>
public static void UpdateStickyNoteControl(XmlToken token, StickyNoteControl snc, SNCAnnotation sncAnnotation)
{
Invariant.Assert((token & AllValues) != 0, "No token specified.");
Invariant.Assert(snc != null, "Sticky Note Control is null.");
Invariant.Assert(sncAnnotation != null, "Annotation is null.");
//
XmlAttribute node;
// Update Ink
if ((token & XmlToken.Ink) != 0 && sncAnnotation.HasInkData)
{
sncAnnotation.UpdateContent(snc, false, XmlToken.Ink);
}
// Update Text
if ((token & XmlToken.Text) != 0 && sncAnnotation.HasTextData)
{
sncAnnotation.UpdateContent(snc, false, XmlToken.Text);
}
// Update Author
if ((token & XmlToken.Author) != 0)
{
int nCount = sncAnnotation._annotation.Authors.Count;
// Get the culture specific text separator.
string listSeparator = snc.Language.GetSpecificCulture().TextInfo.ListSeparator;
string authors = string.Empty;
for (int i = 0; i < nCount; i++)
{
if (i != 0)
{
authors += listSeparator + sncAnnotation._annotation.Authors[i];
}
else
{
authors += sncAnnotation._annotation.Authors[i];
}
}
// Setting the author property will cause the UI to update
snc.SetValue(StickyNoteControl.AuthorPropertyKey, authors);
}
// Update Height
if ((token & XmlToken.Height) != 0)
{
node = (XmlAttribute)sncAnnotation.FindData(XmlToken.Height);
if (node != null)
{
double height = Convert.ToDouble(node.Value, CultureInfo.InvariantCulture);
snc.SetValue(FrameworkElement.HeightProperty, height);
}
else
{
snc.ClearValue(FrameworkElement.HeightProperty);
}
}
// Update Width
if ((token & XmlToken.Width) != 0)
{
node = (XmlAttribute)sncAnnotation.FindData(XmlToken.Width);
if (node != null)
{
double width = Convert.ToDouble(node.Value, CultureInfo.InvariantCulture);
snc.SetValue(FrameworkElement.WidthProperty, width);
}
else
{
snc.ClearValue(FrameworkElement.WidthProperty);
}
}
// Update IsExpanded
if ((token & XmlToken.IsExpanded) != 0)
{
node = (XmlAttribute)sncAnnotation.FindData(XmlToken.IsExpanded);
if (node != null)
{
bool expanded = Convert.ToBoolean(node.Value, CultureInfo.InvariantCulture);
snc.IsExpanded = expanded;
}
else
{
snc.ClearValue(StickyNoteControl.IsExpandedProperty);
}
}
// Update ZOrder
if ((token & XmlToken.ZOrder) != 0)
{
node = (XmlAttribute)sncAnnotation.FindData(XmlToken.ZOrder);
if (node != null)
{
((IAnnotationComponent)snc).ZOrder = Convert.ToInt32(node.Value, CultureInfo.InvariantCulture);
}
}
// Update Position
if ((token & PositionValues) != 0)
{
TranslateTransform transform = new TranslateTransform();
if ((token & XmlToken.Left) != 0)
{
node = (XmlAttribute)sncAnnotation.FindData(XmlToken.Left);
if (node != null)
{
double left = Convert.ToDouble(node.Value, CultureInfo.InvariantCulture);
// All 'left' values are persisted assuming two things:
// 1) the top-left corner (visually) of the StickyNote is the origin of its coordinate space
// 2) the positive x-axis of its parent is to the right
// This flag signals that we have a positive x-axis to the left and our
// top-right corner (visually) is our origin. So we need to flip the
// value before using it.
if (snc.FlipBothOrigins)
{
left = -(left + snc.Width);
}
transform.X = left;
}
}
if ((token & XmlToken.Top) != 0)
{
node = (XmlAttribute)sncAnnotation.FindData(XmlToken.Top);
if (node != null)
{
double top = Convert.ToDouble(node.Value, CultureInfo.InvariantCulture);
transform.Y = top;
}
}
// Now, we update the StickyNote offset
if ((token & XmlToken.XOffset) != 0)
{
node = (XmlAttribute)sncAnnotation.FindData(XmlToken.XOffset);
if (node != null)
{
snc.XOffset = Convert.ToDouble(node.Value, CultureInfo.InvariantCulture);
}
}
if ((token & XmlToken.YOffset) != 0)
{
node = (XmlAttribute)sncAnnotation.FindData(XmlToken.YOffset);
if (node != null)
{
snc.YOffset = Convert.ToDouble(node.Value, CultureInfo.InvariantCulture);
}
}
// Set the adorner layer transform.
snc.PositionTransform = transform;
}
}
/// <summary>
/// This method will update this internal annotation based on this StickyNoteControl.
/// </summary>
/// <param name="tokens"></param>
private void UpdateAnnotationWithSNC(XmlToken tokens)
{
// Check if we have an annotation attached.
// Also we don't want to update the annotation when the data changes are actually caused by UpdateSNCWithAnnotation.
if (_sncAnnotation != null &&
!InternalLocker.IsLocked(LockHelper.LockFlag.DataChanged))
{
//fire trace event
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordAnnotation, EventTrace.Event.UpdateAnnotationWithSNCBegin);
// Now, we are going to update the annotation. Since we will get notified from the annotation store,
// we don't want to update our internal annotation if the change has been made by this instance.
// Here we lock the internal locker.
using (LockHelper.AutoLocker locker = new LockHelper.AutoLocker(InternalLocker, LockHelper.LockFlag.AnnotationChanged))
{
// Now, update the attached annotation.
SNCAnnotation.UpdateAnnotation(tokens, this, _sncAnnotation);
}
//fire trace event
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordAnnotation, EventTrace.Event.UpdateAnnotationWithSNCEnd);
}
}
// it seams that it faster to set fields of structure in one call.
// This trick is workaround of the C# limitation of declaring variable as ref to a struct.
public static void Set(ref XmlToken evnt, XmlNodeType nodeType, QName name, string value)
{
evnt.NodeType = nodeType;
evnt.Name = name;
evnt.Value = value;
}
/// <summary>
/// Return the cargo name which hosts the specified data.
/// </summary>
/// <param name="token">The specified data</param>
/// <returns>The host cargo name</returns>
private static string GetCargoName(XmlToken token)
{
string cargoName;
switch (token)
{
// Those tokens use *snc* prefix.
case XmlToken.MetaData:
case XmlToken.Left:
case XmlToken.Top:
case XmlToken.XOffset:
case XmlToken.YOffset:
case XmlToken.Width:
case XmlToken.Height:
case XmlToken.IsExpanded:
case XmlToken.ZOrder:
{
cargoName = SNBConstants.MetaResourceName;
}
break;
// Those tokens use *media* prefix.
case XmlToken.Text:
{
cargoName = SNBConstants.TextResourceName;
}
break;
case XmlToken.Ink:
{
cargoName = SNBConstants.InkResourceName;
}
break;
default:
{
cargoName = string.Empty;
Debug.Assert(false);
}
break;
}
return cargoName;
}
public static void Get(ref XmlToken evnt, out XmlNodeType nodeType, out QName name, out string value)
{
nodeType = evnt.NodeType;
name = evnt.Name;
value = evnt.Value;
}
//-------------------------------------------------------------------------------
//
// Public Methods
//
//-------------------------------------------------------------------------------
#region Public Methods
/// <summary>
/// This static method will update an Annotation object with the specified data in a StickyNoteControl
/// </summary>
/// <param name="token">A flag which indicates the data needs to be updated. The flag can be combinated with the any valid bits.</param>
/// <param name="snc">A StickyNoteControl instance</param>
/// <param name="sncAnnotation">An SNCAnnotation object which contains a CAF annotation object</param>
public static void UpdateAnnotation(XmlToken token, StickyNoteControl snc, SNCAnnotation sncAnnotation)
{
AnnotationService service = null;
bool autoFlush = false;
try
{
service = AnnotationService.GetService(((IAnnotationComponent)snc).AnnotatedElement);
if (service != null && service.Store != null)
{
autoFlush = service.Store.AutoFlush;
// Temporarily turn off autoflush until we are done
// updating all the necessary values
service.Store.AutoFlush = false;
}
Debug.Assert((token & AllValues) != 0);
// Update Ink
if ((token & XmlToken.Ink) != 0 && snc.Content.Type == StickyNoteType.Ink)
{
sncAnnotation.UpdateContent(snc, true, XmlToken.Ink);
}
// Update Text
if ((token & XmlToken.Text) != 0 && snc.Content.Type == StickyNoteType.Text)
{
sncAnnotation.UpdateContent(snc, true, XmlToken.Text);
}
// Update MetaData
if ((token & NegativeAllContents) != 0)
{
UpdateMetaData(token, snc, sncAnnotation);
}
}
finally
{
if (service != null && service.Store != null)
{
// If auto flush was true before, setting it to true again should cause a flush.
service.Store.AutoFlush = autoFlush;
}
}
}
