/// <summary>
/// Invoked after a cell has been added to a parent. This recursively
/// creates an Id for the new cell and/or resolves Id collisions.
/// </summary>
/// <param name="cell">Cell that has been added.</param>
protected void CellAdded(Object cell)
{
if (cell is mxICell)
{
mxICell mxc = (mxICell)cell;
if (mxc.Id == null && IsCreateIds)
{
mxc.Id = CreateId(cell);
}
if (mxc.Id != null)
{
Object collision = GetCell(mxc.Id);
if (collision != cell)
{
while (collision != null)
{
mxc.Id = CreateId(cell);
collision = GetCell(mxc.Id);
}
if (cells == null)
{
cells = new Dictionary <Object, Object>();
}
cells[mxc.Id] = cell;
}
}
// Makes sure IDs of deleted cells are not reused
try
{
int id = Convert.ToInt32(mxc.Id);
nextId = Math.Max(nextId, id + 1);
}
catch (FormatException e)
{
Trace.WriteLine(this + ".CellAdded(" + cell + "): " + e.Message);
}
int childCount = mxc.ChildCount();
for (int i = 0; i < childCount; i++)
{
CellAdded(mxc.GetChildAt(i));
}
}
}
/// <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>
/// 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();
}
}
/// <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>
/// 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();
}
}
