/// <summary>
/// Returns the cell for the specified cell path using the given root as the
/// root of the path.
/// </summary>
/// <param name="root">Root cell of the path to be resolved.</param>
/// <param name="path">String that defines the path.</param>
/// <returns>Returns the cell that is defined by the path.</returns>
public static mxICell Resolve(mxICell root, string path)
{
mxICell parent = root;
string[] tokens = path.Split(PATH_SEPARATOR);
for (int i = 0; i < tokens.Length; i++)
{
parent = parent.GetChildAt(int.Parse(tokens[i]));
}
return parent;
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.RemoveEdge(mxICell, bool)
*/
public mxICell RemoveEdge(mxICell edge, bool isOutgoing)
{
if (edge != null)
{
if (edge.GetTerminal(!isOutgoing) != this &&
edges != null)
{
edges.Remove(edge);
}
edge.SetTerminal(null, isOutgoing);
}
return(edge);
}
/// <summary>
/// Encoding of cell hierarchies is built-into the core, but is a
/// higher-level function that needs to be explicitely used by the
/// respective object encoders (eg. mxModelCodec, mxChildChangeCodec
/// and mxRootChangeCodec). This implementation writes the given cell
/// and its children as a (flat) sequence into the given node. The
/// children are not encoded if the optional includeChildren is false.
/// The function is in charge of adding the result into the given node
/// and has no return value.
/// </summary>
/// <param name="cell">mxCell to be encoded.</param>
/// <param name="node">Parent XML node to add the encoded cell into.</param>
/// <param name="includeChildren">Boolean indicating if the method should
/// include all descendents</param>
public void EncodeCell(mxICell cell, XmlNode node, bool includeChildren)
{
node.AppendChild(Encode(cell));
if (includeChildren)
{
int childCount = cell.ChildCount();
for (int i = 0; i < childCount; i++)
{
EncodeCell(cell.GetChildAt(i), node, includeChildren);
}
}
}
/// <summary>
/// Reads the cells into the graph model. All cells are children of the root
/// element in the node.
/// </summary>
public override XmlNode BeforeDecode(mxCodec dec, XmlNode node, Object into)
{
if (node is XmlElement)
{
XmlElement elt = (XmlElement)node;
mxGraphModel model = null;
if (into is mxGraphModel)
{
model = (mxGraphModel)into;
}
else
{
model = new mxGraphModel();
}
// Reads the cells into the graph model. All cells
// are children of the root element in the node.
XmlNode root = elt.GetElementsByTagName("root")[0];
mxICell rootCell = null;
if (root != null)
{
XmlNode tmp = root.FirstChild;
while (tmp != null)
{
mxICell cell = dec.DecodeCell(tmp, true);
if (cell != null && cell.Parent == null)
{
rootCell = cell;
}
tmp = tmp.NextSibling;
}
root.ParentNode.RemoveChild(root);
}
// Sets the root on the model if one has been decoded
if (rootCell != null)
{
model.Root = rootCell;
}
}
return(node);
}
/// <summary>
/// Creates the cell path for the given cell. The cell path is a
/// concatenation of the indices of all cells on the (finite) path to
/// the root, eg. "0.0.0.1".
/// </summary>
/// <param name="cell">Cell whose path should be returned.</param>
/// <returns>Returns the string that represents the path.</returns>
public static string Create(mxICell cell)
{
string result = "";
mxICell parent = cell.Parent;
while (parent != null)
{
int index = parent.GetIndex(cell);
result = index.ToString() + mxCellPath.PATH_SEPARATOR + result;
cell = parent;
parent = cell.Parent;
}
return((result.Length > 1) ? result.Substring(0, result.Length - 1)
: "");
}
/// <summary>
/// Creates the cell path for the given cell. The cell path is a
/// concatenation of the indices of all cells on the (finite) path to
/// the root, eg. "0.0.0.1".
/// </summary>
/// <param name="cell">Cell whose path should be returned.</param>
/// <returns>Returns the string that represents the path.</returns>
public static string Create(mxICell cell)
{
string result = "";
mxICell parent = cell.Parent;
while (parent != null)
{
int index = parent.GetIndex(cell);
result = index.ToString() + mxCellPath.PATH_SEPARATOR + result;
cell = parent;
parent = cell.Parent;
}
return (result.Length > 1) ? result.Substring(0, result.Length - 1)
: "";
}
/// <summary>
/// Decodes cells that have been encoded using inversion, ie. where the
/// user object is the enclosing node in the XML, and restores the group
/// and graph structure in the cells. Returns a new mxCell instance
/// that represents the given node.
/// </summary>
/// <param name="node">XML node that contains the cell data.</param>
/// <param name="restoreStructures">Boolean indicating whether the graph
/// structure should be restored by calling insert and insertEdge on the
/// parent and terminals, respectively.
/// </param>
/// <returns>Graph cell that represents the given node.</returns>
public mxICell DecodeCell(XmlNode node, bool restoreStructures)
{
mxICell cell = null;
if (node != null &&
node.NodeType == XmlNodeType.Element)
{
// Tries to find a codec for the given node name. If that does
// not return a codec then the node is the user object (an XML node
// that contains the mxCell, aka inversion).
mxObjectCodec decoder = mxCodecRegistry.GetCodec(node.Name);
// Tries to find the codec for the cell inside the user object.
// This assumes all node names inside the user object are either
// not registered or they correspond to a class for cells.
if (decoder == null)
{
XmlNode child = node.FirstChild;
while (child != null &&
!(decoder is mxCellCodec))
{
decoder = mxCodecRegistry.GetCodec(child.Name);
child = child.NextSibling;
}
}
if (!(decoder is mxCellCodec))
{
decoder = mxCodecRegistry.GetCodec("mxCell");
}
cell = (mxICell)decoder.Decode(this, node);
if (restoreStructures)
{
InsertIntoGraph(cell);
}
}
return(cell);
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.Insert(mxICell, int)
*/
public mxICell Insert(mxICell child, int index)
{
if (child != null)
{
child.RemoveFromParent();
child.Parent = this;
if (children == null)
{
children = new List <mxICell>();
children.Add(child);
}
else
{
children.Insert(index, child);
}
}
return(child);
}
/// <summary>
/// Invoked after a cell has been removed from the model. This recursively
/// removes the cell from its terminals and removes the mapping from the Id
/// to the cell.
/// </summary>
/// <param name="cell">Cell that has been removed.</param>
protected void CellRemoved(Object cell)
{
if (cell is mxICell)
{
mxICell mxc = (mxICell)cell;
int childCount = mxc.ChildCount();
for (int i = 0; i < childCount; i++)
{
CellRemoved(mxc.GetChildAt(i));
}
mxc.RemoveFromTerminal(true);
mxc.RemoveFromTerminal(false);
if (cells != null && mxc.Id != null)
{
cells.Remove(mxc.Id);
}
}
}
/// <summary>
/// Clones the children of the source cell into the given target cell in
/// this model and adds an entry to the mapping that maps from the source
/// cell to the target cell with the same id or the clone of the source cell
/// that was inserted into this model.
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
/// <param name="cloneAllEdges"></param>
/// <param name="mapping"></param>
protected void MergeChildrenImpl(mxICell from, mxICell to, bool cloneAllEdges, Dictionary <Object, Object> mapping)
{
BeginUpdate();
try
{
int childCount = from.ChildCount();
for (int i = 0; i < childCount; i++)
{
mxICell cell = from.GetChildAt(i);
String id = cell.Id;
mxICell target = (mxICell)((id != null && (!IsEdge(cell) || !cloneAllEdges)) ? GetCell(id)
: null);
// Clones and adds the child if no cell exists for the id
if (target == null)
{
mxCell clone = (mxCell)cell.Clone();
clone.Id = id;
// Do *NOT* use model.add as this will move the edge away
// from the parent in updateEdgeParent if maintainEdgeParent
// is enabled in the target model
target = to.Insert(clone);
CellAdded(target);
}
// Stores the mapping for later reconnecting edges
mapping[cell] = target;
// Recurses
MergeChildrenImpl(cell, target, cloneAllEdges, mapping);
}
}
finally
{
EndUpdate();
}
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.InsertEdge(mxICell, bool)
*/
public mxICell InsertEdge(mxICell edge, bool isOutgoing)
{
if (edge != null)
{
edge.RemoveFromTerminal(isOutgoing);
edge.SetTerminal(this, isOutgoing);
if (edges == null ||
edge.GetTerminal(!isOutgoing) != this ||
!edges.Contains(edge))
{
if (edges == null)
{
edges = new List <mxICell>();
}
edges.Add(edge);
}
}
return(edge);
}
/// <summary>
/// Inner helper method for cloning cells recursively.
/// </summary>
protected Object CloneCell(Object cell, Hashtable mapping, bool includeChildren)
{
if (cell is mxICell)
{
mxICell mxc = (mxICell)((mxICell)cell).Clone();
mapping[cell] = mxc;
if (includeChildren)
{
int childCount = GetChildCount(cell);
for (int i = 0; i < childCount; i++)
{
Object clone = CloneCell(GetChildAt(cell, i), mapping, true);
mxc.Insert((mxICell)clone);
}
}
return(mxc);
}
return(null);
}
/// <summary>
/// Merges the children of the given cell into the given target cell inside
/// this model. All cells are cloned unless there is a corresponding cell in
/// the model with the same id, in which case the source cell is ignored and
/// all edges are connected to the corresponding cell in this model. Edges
/// are considered to have no identity and are always cloned unless the
/// cloneAllEdges flag is set to false, in which case edges with the same
/// id in the target model are reconnected to reflect the terminals of the
/// source edges.
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
/// <param name="cloneAllEdges"></param>
public void MergeChildren(mxICell from, mxICell to, bool cloneAllEdges)
{
BeginUpdate();
try
{
Dictionary <Object, Object> mapping = new Dictionary <Object, Object>();
MergeChildrenImpl(from, to, cloneAllEdges, mapping);
// Post-processes all edges in the mapping and
// reconnects the terminals to the corresponding
// cells in the target model
foreach (KeyValuePair <Object, Object> kvp in mapping)
{
Object edge = kvp.Key;
Object cell = kvp.Value;
Object terminal = GetTerminal(edge, true);
if (terminal != null)
{
terminal = mapping[terminal];
SetTerminal(cell, terminal, true);
}
terminal = GetTerminal(edge, false);
if (terminal != null)
{
terminal = mapping[terminal];
SetTerminal(cell, terminal, false);
}
}
}
finally
{
EndUpdate();
}
}
/// <summary>
/// Inner helper method for restoring the connections in
/// a network of cloned cells.
/// </summary>
protected void RestoreClone(Object clone, Object cell, Hashtable mapping)
{
if (clone is mxICell)
{
mxICell mxc = (mxICell)clone;
Object source = GetTerminal(cell, true);
if (source is mxICell)
{
mxICell tmp = (mxICell)mapping[source];
if (tmp != null)
{
tmp.InsertEdge(mxc, true);
}
}
Object target = GetTerminal(cell, false);
if (target is mxICell)
{
mxICell tmp = (mxICell)mapping[target];
if (tmp != null)
{
tmp.InsertEdge(mxc, false);
}
}
}
int childCount = GetChildCount(clone);
for (int i = 0; i < childCount; i++)
{
RestoreClone(GetChildAt(clone, i), GetChildAt(cell, i), mapping);
}
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.Insert(mxICell, int)
*/
public mxICell Insert(mxICell child, int index)
{
if (child != null)
{
child.RemoveFromParent();
child.Parent = this;
if (children == null)
{
children = new List<mxICell>();
children.Add(child);
}
else
{
children.Insert(index, child);
}
}
return child;
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.Insert(mxICell)
*/
public mxICell Insert(mxICell child)
{
int index = ChildCount();
if (child.Parent == this)
{
index--;
}
return Insert(child, index);
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.GetIndex(mxICell)
*/
public int GetIndex(mxICell child)
{
return (children != null) ? children.IndexOf(child) : -1;
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.GetEdgeIndex(mxICell)
*/
public int GetEdgeIndex(mxICell edge)
{
return (edges != null) ? edges.IndexOf(edge) : -1;
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.GetEdgeIndex(mxICell)
*/
public int GetEdgeIndex(mxICell edge)
{
return((edges != null) ? edges.IndexOf(edge) : -1);
}
/// <summary>
/// Inserts the given cell into its parent and terminal cells.
/// </summary>
/// <param name="cell"></param>
public void InsertIntoGraph(mxICell cell)
{
mxICell parent = cell.Parent;
mxICell source = cell.GetTerminal(true);
mxICell target = cell.GetTerminal(false);
// Fixes possible inconsistencies during insert into graph
cell.SetTerminal(null, false);
cell.SetTerminal(null, true);
cell.Parent = null;
if (parent != null)
{
parent.Insert(cell);
}
if (source != null)
{
source.InsertEdge(cell, true);
}
if (target != null)
{
target.InsertEdge(cell, false);
}
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.RemoveEdge(mxICell, bool)
*/
public mxICell RemoveEdge(mxICell edge, bool isOutgoing)
{
if (edge != null)
{
if (edge.GetTerminal(!isOutgoing) != this &&
edges != null)
{
edges.Remove(edge);
}
edge.SetTerminal(null, isOutgoing);
}
return edge;
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.GetIndex(mxICell)
*/
public int GetIndex(mxICell child)
{
return((children != null) ? children.IndexOf(child) : -1);
}
/// <summary>
/// Merges the children of the given cell into the given target cell inside
/// this model. All cells are cloned unless there is a corresponding cell in
/// the model with the same id, in which case the source cell is ignored and
/// all edges are connected to the corresponding cell in this model. Edges
/// are considered to have no identity and are always cloned unless the
/// cloneAllEdges flag is set to false, in which case edges with the same
/// id in the target model are reconnected to reflect the terminals of the
/// source edges.
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
/// <param name="cloneAllEdges"></param>
public void MergeChildren(mxICell from, mxICell to, bool cloneAllEdges)
{
BeginUpdate();
try
{
Dictionary<Object, Object> mapping = new Dictionary<Object, Object>();
MergeChildrenImpl(from, to, cloneAllEdges, mapping);
// Post-processes all edges in the mapping and
// reconnects the terminals to the corresponding
// cells in the target model
foreach (KeyValuePair<Object, Object> kvp in mapping)
{
Object edge = kvp.Key;
Object cell = kvp.Value;
Object terminal = GetTerminal(edge, true);
if (terminal != null)
{
terminal = mapping[terminal];
SetTerminal(cell, terminal, true);
}
terminal = GetTerminal(edge, false);
if (terminal != null)
{
terminal = mapping[terminal];
SetTerminal(cell, terminal, false);
}
}
}
finally
{
EndUpdate();
}
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.InsertEdge(mxICell, bool)
*/
public mxICell InsertEdge(mxICell edge, bool isOutgoing)
{
if (edge != null)
{
edge.RemoveFromTerminal(isOutgoing);
edge.SetTerminal(this, isOutgoing);
if (edges == null ||
edge.GetTerminal(!isOutgoing) != this ||
!edges.Contains(edge))
{
if (edges == null)
{
edges = new List<mxICell>();
}
edges.Add(edge);
}
}
return edge;
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.Remove(mxICell)
*/
public mxICell Remove(mxICell child)
{
if (child != null && children != null)
{
children.Remove(child);
child.Parent = null;
}
return child;
}
/// <summary>
/// Clones the children of the source cell into the given target cell in
/// this model and adds an entry to the mapping that maps from the source
/// cell to the target cell with the same id or the clone of the source cell
/// that was inserted into this model.
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
/// <param name="cloneAllEdges"></param>
/// <param name="mapping"></param>
protected void MergeChildrenImpl(mxICell from, mxICell to, bool cloneAllEdges, Dictionary<Object, Object> mapping)
{
BeginUpdate();
try
{
int childCount = from.ChildCount();
for (int i = 0; i < childCount; i++)
{
mxICell cell = from.GetChildAt(i);
String id = cell.Id;
mxICell target = (mxICell) ((id != null && (!IsEdge(cell) || !cloneAllEdges)) ? GetCell(id)
: null);
// Clones and adds the child if no cell exists for the id
if (target == null)
{
mxCell clone = (mxCell) cell.Clone();
clone.Id = id;
// Do *NOT* use model.add as this will move the edge away
// from the parent in updateEdgeParent if maintainEdgeParent
// is enabled in the target model
target = to.Insert(clone);
CellAdded(target);
}
// Stores the mapping for later reconnecting edges
mapping[cell] = target;
// Recurses
MergeChildrenImpl(cell, target, cloneAllEdges, mapping);
}
}
finally
{
EndUpdate();
}
}
/* (non-Dotnetdoc)
* see com.mxgraph.mxICell.SetTerminal(mxICell, bool)
*/
public mxICell SetTerminal(mxICell terminal, bool isSource)
{
if (isSource)
{
Source = terminal;
}
else
{
Target = terminal;
}
return terminal;
}
/// <summary>
/// Encoding of cell hierarchies is built-into the core, but is a
/// higher-level function that needs to be explicitely used by the
/// respective object encoders (eg. mxModelCodec, mxChildChangeCodec
/// and mxRootChangeCodec). This implementation writes the given cell
/// and its children as a (flat) sequence into the given node. The
/// children are not encoded if the optional includeChildren is false.
/// The function is in charge of adding the result into the given node
/// and has no return value.
/// </summary>
/// <param name="cell">mxCell to be encoded.</param>
/// <param name="node">Parent XML node to add the encoded cell into.</param>
/// <param name="includeChildren">Boolean indicating if the method should
/// include all descendents</param>
public void EncodeCell(mxICell cell, XmlNode node, bool includeChildren)
{
node.AppendChild(Encode(cell));
if (includeChildren)
{
int childCount = cell.ChildCount();
for (int i = 0; i < childCount; i++)
{
EncodeCell(cell.GetChildAt(i), node, includeChildren);
}
}
}
