/// <summary>
/// Recursively creates the cell state for the given cell if visible is true and
/// the given cell is visible. If the cell is not visible but the state exists
/// then it is removed using removeState.
/// </summary>
/// <param name="cell">Cell whose cell state should be created.</param>
/// <param name="visible">Boolean indicating if the cell should be visible.</param>
public Object ValidateCell(Object cell, Boolean visible)
{
if (cell != null)
{
visible = visible && graph.IsCellVisible(cell);
mxCellState state = GetState(cell, visible);
if (state != null && !visible)
{
RemoveState(cell);
}
else
{
mxIGraphModel model = graph.Model;
int childCount = model.GetChildCount(cell);
for (int i = 0; i < childCount; i++)
{
ValidateCell(
model.GetChildAt(cell, i),
visible && !graph.IsCellCollapsed(cell));
}
}
}
return(cell);
}
/// <summary>
/// Validates the bounds of the given parent's child using the given parent
/// state as the origin for the child. The validation is carried out
/// recursively for all non-collapsed descendants.
/// </summary>
/// <param name="parentState">Cell state for the given parent.</param>
/// <param name="cell">Cell for which the bounds in the state should be updated.</param>
public void ValidateBounds(mxCellState parentState, Object cell)
{
mxIGraphModel model = graph.Model;
mxCellState state = GetState(cell, true);
if (state != null)
{
if (!graph.IsCellVisible(cell))
{
RemoveState(cell);
}
else if (parentState != null)
{
state.AbsoluteOffset.X = 0;
state.AbsoluteOffset.Y = 0;
state.Origin = new mxPoint(parentState.Origin.X,
parentState.Origin.Y);
mxGeometry geo = graph.GetCellGeometry(cell);
if (geo != null)
{
if (!model.IsEdge(cell))
{
mxPoint origin = state.Origin;
mxPoint offset = geo.Offset;
if (offset == null)
{
offset = EMPTY_POINT;
}
if (geo.Relative)
{
origin.X += geo.X * parentState.Width /
Scale + offset.X;
origin.Y += geo.Y * parentState.Height /
Scale + offset.Y;
}
else
{
state.AbsoluteOffset = new mxPoint(
scale * offset.X,
scale * offset.Y);
origin.X += geo.X;
origin.Y += geo.Y;
}
}
// Updates the cell state's bounds
state.X = scale * (translate.X + state.Origin.X);
state.Y = scale * (translate.Y + state.Origin.Y);
state.Width = scale * geo.Width;
state.Height = scale * geo.Height;
if (model.IsVertex(cell))
{
UpdateVertexLabelOffset(state);
}
}
}
// Applies child offset to origin
mxPoint childOffset = graph.GetChildOffsetForCell(cell);
if (childOffset != null)
{
state.Origin.X += childOffset.X;
state.Origin.Y += childOffset.Y;
}
}
// Recursively validates the child bounds
if (state != null &&
!graph.IsCellCollapsed(cell))
{
int childCount = model.GetChildCount(cell);
for (int i = 0; i < childCount; i++)
{
ValidateBounds(state, model.GetChildAt(cell, i));
}
}
}