/// <summary>
/// Event handler that is called when the document node has disposed or name changed. Because the path to the node can have changed too,
/// the path is renewed in this case.
/// </summary>
/// <param name="sender"></param>
/// <param name="source">Source of the tunneled event.</param>
/// <param name="e"></param>
private void EhDocNode_TunneledEvent(object sender, object source, Main.TunnelingEventArgs e)
{
if (IsDisposeInProgress)
{
return;
}
#if DEBUG_DOCNODEPROXYLOGGING
Current.Console.WriteLine("DocNodeProxy.EhDocNode_TunneledEvent: sender={0}, source={1} e={2}", sender, source, e);
#endif
bool shouldFireChangedEvent = false;
var senderAsNode = source as IDocumentLeafNode;
if (!(senderAsNode != null))
{
throw new InvalidProgramException();
}
if (e is DisposeEventArgs)
{
// when our DocNode was disposed, it is probable that the parent of this node (and further parents) are disposed too
// thus we need to watch the first node that is not disposed
var docNode = InternalDocumentNode;
ClearDocNode();
if (!(sender is IProject)) // if the whole project is disposed, there is no point in trying to watch something
{
// note Dispose is designed to let the hierarchy from child to parent (root) valid, but not from root to child!
// thus trying to get an actual document path here is in must cases unsuccessfull. We have to rely on our stored path, and that it was always updated!
// the only case were it is successfull if a new node immediately replaces an old document node
var node = AbsoluteDocumentPath.GetNodeOrLeastResolveableNode(_docNodePath, senderAsNode, out var wasResolvedCompletely);
if (wasResolvedCompletely)
{
SetDocNode(node);
}
else
{
SetWatchOnNode(node);
}
shouldFireChangedEvent = true;
}
}
else if (e is DocumentPathChangedEventArgs)
{
if (null != InternalDocumentNode)
{
InternalDocumentPath = Main.AbsoluteDocumentPath.GetAbsolutePath(InternalDocumentNode);
InternalCheckAbsolutePath();
}
shouldFireChangedEvent = true;
}
if (shouldFireChangedEvent)
{
EhSelfChanged(EventArgs.Empty);
}
}
/// <summary>
/// Replaces parts of the part by another part.
/// </summary>
/// <param name="partToReplace">Part of the path that should be replaced. This part has to match the beginning of this part. The last item of the part
/// is allowed to be given only partially.</param>
/// <param name="newPart">The new part to replace that piece of the path, that match the <c>partToReplace</c>.</param>
/// <param name="newPath">The resulting new path (if the return value is <c>true</c>), or the original path, if the return value is <c>false</c>.</param>
/// <returns>True if the part could be replaced. Returns false if the path does not fulfill the presumtions given above.</returns>
/// <remarks>
/// As stated above, the last item of the partToReplace can be given only partially. As an example, the path (here separated by space)
/// <para>Tables Preexperiment1/WDaten Time</para>
/// <para>should be replaced by </para>
/// <para>Tables Preexperiment2\WDaten Time</para>
/// <para>To make this replacement, the partToReplace should be given by</para>
/// <para>Tables Preexperiment1/</para>
/// <para>and the newPart should be given by</para>
/// <para>Tables Preexperiment2\</para>
/// <para>Note that Preexperiment1\ and Preexperiment2\ are only partially defined items of the path.</para>
/// </remarks>
public bool ReplacePathParts(AbsoluteDocumentPath partToReplace, AbsoluteDocumentPath newPart, out AbsoluteDocumentPath newPath)
{
newPath = this;
// Test if the start of my path is identical to that of partToReplace
if (Count < partToReplace.Count)
{
return(false);
}
for (int i = 0; i < partToReplace.Count - 1; i++)
{
if (0 != string.Compare(this[i], partToReplace[i]))
{
return(false);
}
}
if (!this[partToReplace.Count - 1].StartsWith(partToReplace[partToReplace.Count - 1]))
{
return(false);
}
// ok, the beginning of my path and partToReplace is identical,
// thus we replace the beginning of my path with that of newPart
var list = new List <string>(_pathParts);
string s = list[partToReplace.Count - 1].Substring(partToReplace[partToReplace.Count - 1].Length);
list[partToReplace.Count - 1] = newPart[newPart.Count - 1] + s;
int j, k;
for (j = partToReplace.Count - 2, k = newPart.Count - 2; j >= 0 && k >= 0; --j, --k)
{
list[j] = newPart[k];
}
if (k > 0)
{
for (; k >= 0; --k)
{
list.Insert(0, newPart[k]);
}
}
else if (j > 0)
{
for (; j >= 0; --j)
{
list.RemoveAt(0);
}
}
newPath = new AbsoluteDocumentPath(list.ToArray());
return(true);
}
/// <summary>
/// Resolves the path by first using startnode as starting point. If that failed, try using documentRoot as starting point.
/// </summary>
/// <param name="path">The path to resolve.</param>
/// <param name="startnode">The node object which is considered as the starting point of the path.</param>
/// <param name="documentRoot">An alternative node which is used as starting point of the path if the first try failed.</param>
/// <returns>The resolved object. If the resolving process failed, the return value is null.</returns>
public static IDocumentLeafNode GetObject(AbsoluteDocumentPath path, IDocumentLeafNode startnode, IDocumentNode documentRoot)
{
var retval = GetObject(path, startnode);
if (null == retval && null != documentRoot)
{
retval = GetObject(path, documentRoot);
}
return(retval);
}
private void SortItemsByDependencyProxyReporter(IProxy proxy, object owner, string propertyName, HashSet <IProjectItem> dependenciesOfItem)
{
var proxyDoc = proxy?.DocumentObject as IDocumentLeafNode;
if (proxyDoc != null)
{
var dependentOnItem = AbsoluteDocumentPath.GetRootNodeImplementing <IProjectItem>(proxyDoc);
if (null != dependentOnItem)
{
dependenciesOfItem.Add(dependentOnItem);
}
}
}
/// <summary>
/// Gets the node that is designated by the provided <paramref name="path"/> or the least resolveable node.
/// </summary>
/// <param name="path">The document path to resolve.</param>
/// <param name="startnode">The startnode.</param>
/// <param name="pathWasCompletelyResolved">If set to <c>true</c> on return, the path was completely resolved. Otherwise, <c>false</c>.</param>
/// <returns>The resolved node, or the least node on the path that could be resolved.</returns>
/// <exception cref="System.ArgumentNullException">
/// path
/// or
/// startnode
/// </exception>
public static IDocumentLeafNode GetNodeOrLeastResolveableNode(AbsoluteDocumentPath path, IDocumentLeafNode startnode, out bool pathWasCompletelyResolved)
{
if (null == path)
{
throw new ArgumentNullException("path");
}
if (null == startnode)
{
throw new ArgumentNullException("startnode");
}
var node = startnode;
node = GetRootNode(node);
if (null == node)
{
throw new InvalidProgramException("startnote is not rooted");
}
var prevNode = node;
pathWasCompletelyResolved = true;
for (int i = 0; i < path.Count; i++)
{
prevNode = node;
if (path[i] == "..")
{
node = node.ParentObject;
}
else
{
if (node is Main.IDocumentNode)
{
node = ((Main.IDocumentNode)node).GetChildObjectNamed(path[i]);
}
else
{
node = null;
}
}
if (node == null)
{
pathWasCompletelyResolved = false;
break;
}
} // end for
return(node ?? prevNode);
}
public AbsoluteDocumentPath Append(AbsoluteDocumentPath other)
{
if (null == other)
{
throw new ArgumentNullException("other");
}
var arr = new string[_pathParts.Length + other._pathParts.Length];
Array.Copy(_pathParts, arr, _pathParts.Length);
Array.Copy(other._pathParts, 0, arr, _pathParts.Length, other._pathParts.Length);
return(new AbsoluteDocumentPath(arr));
}
public bool StartsWith(AbsoluteDocumentPath another)
{
if (Count < another.Count)
{
return(false);
}
for (int i = 0; i < another.Count; ++i)
{
if (this[i] != another[i])
{
return(false);
}
}
return(true);
}
/// <summary>
/// Event handler that is called when the watched node (a node that is not the document node) has changed. Maybe this watched node had now created a parent node, and our
/// document path can resolved now. That's why we try to resolve our document path now.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void EhWatchedNode_Changed(object sender, EventArgs e)
{
if (IsDisposeInProgress)
{
return;
}
#if DEBUG_DOCNODEPROXYLOGGING
Current.Console.WriteLine("DocNodeProxy.EhWatchedNode_Changed: sender={0}, e={1}", sender, e);
#endif
if (!(InternalDocumentNode == null))
{
throw new InvalidProgramException();
}
var senderAsDocNode = sender as IDocumentLeafNode;
if (!(senderAsDocNode != null))
{
throw new InvalidProgramException();
}
var node = AbsoluteDocumentPath.GetNodeOrLeastResolveableNode(_docNodePath, senderAsDocNode, out var wasResolvedCompletely);
if (null == node)
{
throw new InvalidProgramException("node should always be != null, since we use absolute paths, and at least an AltaxoDocument should be resolved here.");
}
if (wasResolvedCompletely)
{
ClearWatch();
SetDocNode(node);
}
else // not completely resolved
{
if (!object.ReferenceEquals(sender, node))
{
ClearWatch();
SetWatchOnNode(node);
}
}
}
public static IDocumentLeafNode GetObject(AbsoluteDocumentPath path, IDocumentLeafNode startnode)
{
if (null == path)
{
throw new ArgumentNullException("path");
}
if (null == startnode)
{
throw new ArgumentNullException("startnode");
}
var node = startnode;
node = GetRootNode(node);
for (int i = 0; i < path.Count; i++)
{
if (path[i] == "..")
{
if (null != node)
{
node = node.ParentObject;
}
else
{
return(null);
}
}
else
{
if (node is Main.IDocumentNode)
{
node = ((Main.IDocumentNode)node).GetChildObjectNamed(path[i]);
}
else
{
return(null);
}
}
} // end for
return(node);
}
/// <summary>
/// Replaces parts of the part of the document node by another part. If the replacement was successful, the original document node is cleared.
/// See <see cref="M:DocumentPath.ReplacePathParts"/> for details of the part replacement.
/// </summary>
/// <param name="partToReplace">Part of the path that should be replaced. This part has to match the beginning of this part. The last item of the part
/// is allowed to be given only partially.</param>
/// <param name="newPart">The new part to replace that piece of the path, that match the <c>partToReplace</c>.</param>
/// <param name="rootNode">Any document node in the hierarchy that is used to find the root node of the hierarchy.</param>
/// <returns>True if the path could be replaced. Returns false if the path does not fulfill the presumptions given above.</returns>
/// <remarks>
/// As stated above, the last item of the partToReplace can be given only partially. As an example, the path (here separated by space)
/// <para>Tables Preexperiment1/WDaten Time</para>
/// <para>should be replaced by </para>
/// <para>Tables Preexperiment2\WDaten Time</para>
/// <para>To make this replacement, the partToReplace should be given by</para>
/// <para>Tables Preexperiment1/</para>
/// <para>and the newPart should be given by</para>
/// <para>Tables Preexperiment2\</para>
/// <para>Note that Preexperiment1\ and Preexperiment2\ are only partially defined items of the path.</para>
/// </remarks>
public bool ReplacePathParts(AbsoluteDocumentPath partToReplace, AbsoluteDocumentPath newPart, IDocumentLeafNode rootNode)
{
if (!(_docNodePath != null || IsDisposeInProgress))
{
throw new InvalidProgramException();
}
if (null == rootNode)
{
throw new ArgumentNullException(nameof(rootNode));
}
var success = _docNodePath.ReplacePathParts(partToReplace, newPart, out var newPath);
if (success)
{
_docNodePath = newPath;
ClearDocNode();
ResolveDocumentObject(rootNode);
}
return(success);
}
public static RelativeDocumentPath FromOldDeprecated(AbsoluteDocumentPath absPath)
{
if (null == absPath)
{
throw new ArgumentNullException(nameof(absPath));
}
int numberOfLevelsDown = 0;
var pathList = new List <string>();
for (int i = 0; i < absPath.Count; ++i)
{
if (absPath[i] == "..")
{
numberOfLevelsDown++;
}
else
{
pathList.Add(absPath[i]);
}
}
return(new RelativeDocumentPath(numberOfLevelsDown, pathList));
}
/// <summary>
/// Get the absolute path of the node <code>node</code> starting from the root.
/// </summary>
/// <param name="node">The node for which the path is retrieved.</param>
/// <returns>The absolute path of the node. The first element is a "/" to mark this as absolute path.</returns>
public static AbsoluteDocumentPath GetAbsolutePath(IDocumentLeafNode node)
{
AbsoluteDocumentPath path = GetPath(node, int.MaxValue);
return(path);
}
/// <summary>
/// Adds a replacement entry for a project item. The paths given should be complete paths of the project item (original path and new path).
/// </summary>
/// <param name="originalPath">The original path of the project item (DataTable, Graph, ProjectFolderPropertyBag).</param>
/// <param name="newPath">The new path of the project item.</param>
public void AddProjectItemReplacement(AbsoluteDocumentPath originalPath, AbsoluteDocumentPath newPath)
{
_itemRelocationDictionary.Add(originalPath, newPath);
}
/// <summary>
/// Event handler that is called when the watched node or a parent node below has disposed or its name changed. We then try to resolve the path again.
/// </summary>
/// <param name="sender"></param>
/// <param name="source">Source of the tunneled event.</param>
/// <param name="e"></param>
private void EhWatchedNode_TunneledEvent(object sender, object source, Main.TunnelingEventArgs e)
{
if (IsDisposeInProgress)
{
return;
}
if (!(InternalDocumentNode == null))
{
throw new InvalidProgramException();
}
var senderAsDocNode = sender as IDocumentLeafNode;
var sourceAsDocNode = source as IDocumentLeafNode;
if (!(senderAsDocNode != null))
{
throw new InvalidProgramException();
}
if (!(sourceAsDocNode != null))
{
throw new InvalidProgramException();
}
if (e is DocumentPathChangedEventArgs) // here, we activly change our stored path, if the watched node or a parent has changed its name
{
var watchedPath = AbsoluteDocumentPath.GetAbsolutePath(senderAsDocNode);
watchedPath = watchedPath.Append(_docNodePath.SubPath(watchedPath.Count, _docNodePath.Count - watchedPath.Count));
var oldPath = _docNodePath;
_docNodePath = watchedPath;
#if DEBUG_DOCNODEPROXYLOGGING
Current.Console.WriteLine("DocNodeProxy.EhWatchedNode_TunneledEvent: Modified path, oldpath={0}, newpath={1}", oldPath, _docNodePath);
#endif
}
// then we try to resolve the path again
if ((e is DisposeEventArgs) || (e is DocumentPathChangedEventArgs))
{
#if DEBUG_DOCNODEPROXYLOGGING
Current.Console.WriteLine("DocNodeProxy.EhWatchedNode_TunneledEvent");
#endif
var node = AbsoluteDocumentPath.GetNodeOrLeastResolveableNode(_docNodePath, sourceAsDocNode, out var wasResolvedCompletely);
if (null == node)
{
throw new InvalidProgramException(nameof(node) + " should always be != null, since we use absolute paths, and at least an AltaxoDocument should be resolved here.");
}
if (wasResolvedCompletely)
{
ClearWatch();
SetDocNode(node);
}
else // not completely resolved
{
if (!object.ReferenceEquals(sender, node))
{
ClearWatch();
SetWatchOnNode(node);
}
}
}
}
/// <summary>
/// Sets the watch on a node that is not our document node, but a node lower in the hierarchy. We watch both the Changed event and the TunneledEvent of this node.
/// </summary>
/// <param name="node">The node to watch.</param>
protected virtual void SetWatchOnNode(IDocumentLeafNode node)
{
#if DOCNODEPROXY_CONCURRENTDEBUG
int debugUsn = System.Threading.Interlocked.Increment(ref _debugUSN);
_debug.Enqueue("START SetWatchOnNode " + debugUsn.ToString());
#endif
if (null == node)
{
throw new ArgumentNullException(nameof(node));
}
if (null != _weakDocNodeChangedHandler)
{
_weakDocNodeChangedHandler.Remove();
_weakDocNodeChangedHandler = null;
}
if (null != _weakDocNodeTunneledEventHandler)
{
_weakDocNodeTunneledEventHandler.Remove();
_weakDocNodeTunneledEventHandler = null;
}
node.TunneledEvent += (_weakDocNodeTunneledEventHandler = new WeakActionHandler <object, object, TunnelingEventArgs>(EhWatchedNode_TunneledEvent, handler => node.TunneledEvent -= handler));
node.Changed += (_weakDocNodeChangedHandler = new WeakEventHandler(EhWatchedNode_Changed, handler => node.Changed -= handler));
#if DEBUG_DOCNODEPROXYLOGGING
Current.Console.WriteLine("Start watching node <<{0}>> of total path <<{1}>>", AbsoluteDocumentPath.GetAbsolutePath(node), _docNodePath);
#endif
#if DOCNODEPROXY_CONCURRENTDEBUG
_debug.Enqueue("STOP SetWatchOnNode " + debugUsn.ToString() + (_docNodeRef == null).ToString());
#endif
}
/// <summary>
/// Sets the watch on a node that is not our document node, but a node lower in the hierarchy. We watch both the Changed event and the TunneledEvent of this node.
/// </summary>
/// <param name="node">The node to watch.</param>
protected virtual void SetWatchOnNode(IDocumentLeafNode node)
{
if (null == node)
{
throw new ArgumentNullException(nameof(node));
}
if (null != _weakDocNodeChangedHandler)
{
_weakDocNodeChangedHandler.Remove();
_weakDocNodeChangedHandler = null;
}
if (null != _weakDocNodeTunneledEventHandler)
{
_weakDocNodeTunneledEventHandler.Remove();
_weakDocNodeTunneledEventHandler = null;
}
node.TunneledEvent += (_weakDocNodeTunneledEventHandler = new WeakActionHandler <object, object, TunnelingEventArgs>(EhWatchedNode_TunneledEvent, handler => node.TunneledEvent -= handler));
node.Changed += (_weakDocNodeChangedHandler = new WeakEventHandler(EhWatchedNode_Changed, handler => node.Changed -= handler));
#if DEBUG_DOCNODEPROXYLOGGING
Current.Console.WriteLine("Start watching node <<{0}>> of total path <<{1}>>", AbsoluteDocumentPath.GetAbsolutePath(node), _docNodePath);
#endif
}
public AbsoluteDocumentPath(AbsoluteDocumentPath from)
{
_pathParts = (string[])from._pathParts.Clone();
}
