// invalidate the Diagram.Layout if node/link added/removed,
// and remove any cached ForceDirectedNetwork
public override void InvalidateLayout(Part p, LayoutChange change)
{
if (this.IsLayingOut)
{
return;
}
if (this.SkipsInvalidate)
{
return;
}
if (this.Diagram == null)
{
return;
}
if (p == null || p.Layer == null || p.Layer.IsTemporary)
{
return;
}
var cfdlayout = this.Diagram.Layout as ContinuousForceDirectedLayout;
if (cfdlayout != null &&
(change == LayoutChange.NodeAdded || change == LayoutChange.NodeRemoved ||
change == LayoutChange.LinkAdded || change == LayoutChange.LinkRemoved))
{
cfdlayout.ValidLayout = false;
cfdlayout.Network = null;
}
else
{
base.InvalidateLayout(p, change);
}
}
/// <summary>
/// Declare that this layout may be invalid, for a given reason.
/// </summary>
/// <param name="reason">a <see cref="LayoutChange"/> hint</param>
/// <param name="part">the <see cref="Northwoods.GoXam.Part"/> that changed</param>
/// <remarks>
/// For each layout in <see cref="Layouts"/> in which the given part participates,
/// call <see cref="IDiagramLayout.Invalidate"/> with the same arguments.
/// </remarks>
public void Invalidate(LayoutChange reason, Part part)
{
foreach (IDiagramLayout layout in this.Layouts)
{
if (reason == LayoutChange.All || layout.CanLayoutPart(part))
{
layout.Invalidate(reason, part);
}
}
}
/// <summary>
/// Declare that the <see cref="IDiagramLayout"/> including a given <see cref="Part"/>
/// is now invalid and may need to be performed again soon.
/// </summary>
/// <param name="p">must be a <see cref="Part"/></param>
/// <param name="change">
/// a hint on the reason for the need for a new layout;
/// this is used to decide whether a layout is really needed.
/// </param>
/// <remarks>
/// <para>
/// This is called by the diagram's <see cref="PartManager"/> each time
/// a node or link or group-membership is added or removed.
/// It calls <see cref="IDiagramLayout.Invalidate"/> to let the part's
/// responsible <see cref="IDiagramLayout"/> know that there's been a change
/// and that the layout may need to be performed again, depending on
/// the layout's <see cref="DiagramLayout.Conditions"/>.
/// </para>
/// <para>
/// This method ignores parts in temporary layers.
/// This method also does nothing if <see cref="SkipsInvalidate"/> is true
/// or if the <see cref="Northwoods.GoXam.Diagram.Model"/>'s
/// <see cref="IDiagramModel.SkipsUndoManager"/> property is true.
/// </para>
/// </remarks>
public virtual void InvalidateLayout(Part p, LayoutChange change)
{
// ignore any invalidations during a layout
if (this.IsLayingOut)
{
return;
}
// ignore any invalidations during a rebuild (replaced NodesSource or replaced Model or changed templates)
if (this.SkipsInvalidate)
{
return;
}
// ignore any position changes during animation
if (change == LayoutChange.NodeLocationChanged && this.IsAnimating)
{
return;
}
// ignore temporary objects
if (p != null && (p.Layer == null || p.Layer.IsTemporary))
{
return;
}
Diagram diagram = this.Diagram;
if (diagram == null)
{
return;
}
// invalidate the layout for the part
IDiagramLayout layout;
if (p != null)
{
if ((change == LayoutChange.MemberAdded || change == LayoutChange.MemberRemoved) && p is Group)
{
layout = ((Group)p).Layout;
}
else
{
layout = GetLayoutBy(p);
}
}
else
{
layout = diagram.Layout;
}
//if (change != LayoutChange.NodeLocationChanged && change != LayoutChange.NodeSizeChanged && change != LayoutChange.GroupSizeChanged && !(diagram is Palette))
// Diagram.Debug("LayoutManager.InvalidateLayout: " + Diagram.Str(p) + " " + change.ToString() + " in " + (layout == null ? "(no layout)" : (layout.Group == null ? "(diagram)" : Diagram.Str(layout.Group))));
if (layout != null)
{
layout.Invalidate(change, p);
}
}
/// <summary>
/// Declare that this layout might no longer be valid, depending on the change and the <see cref="Conditions"/>.
/// </summary>
/// <param name="reason">
/// A <see cref="LayoutChange"/> hint describing what change may have made the layout invalid.
/// If the value is <see cref="LayoutChange.All"/>, <see cref="ValidLayout"/> will be set to false unconditionally.
/// </param>
/// <param name="part">
/// the <see cref="Northwoods.GoXam.Part"/> that has changed
/// </param>
/// <remarks>
/// This method may set <see cref="ValidLayout"/> to false, if the <see cref="Conditions"/> are met.
/// This method does not request a new layout -- call <see cref="InvalidateLayout"/> if
/// you want to unconditionally set <see cref="ValidLayout"/> to false and ask the
/// <see cref="LayoutManager"/> to schedule perform layouts that are invalid.
/// </remarks>
/// <seealso cref="InvalidateLayout"/>
public virtual void Invalidate(LayoutChange reason, Part part) {
if (!this.ValidLayout) return;
// no Part needed for these two cases:
if (reason == LayoutChange.All) {
this.ValidLayout = false;
return;
}
// don't care any more?
if (this.InitialLayoutCompleted) return;
if ((reason&this.Conditions&LayoutChange.DiagramLayoutChanged) == LayoutChange.DiagramLayoutChanged) {
this.ValidLayout = false;
return;
}
// now require a Part
if (part == null) return;
// the rest of the LayoutChanges involve a particular Part
Node node = part as Node;
if (node != null) {
Layer layer = node.Layer;
if (layer != null && !layer.IsTemporary) {
if ((reason&this.Conditions&LayoutChange.NodeLocationChanged) == LayoutChange.NodeLocationChanged) {
if (!node.IsLinkLabel) {
this.ValidLayout = false;
}
} else if ((reason&this.Conditions&LayoutChange.NodeSizeChanged) == LayoutChange.NodeSizeChanged) {
if (!node.IsLinkLabel) {
this.ValidLayout = false;
}
} else if ((reason&this.Conditions&LayoutChange.GroupSizeChanged) == LayoutChange.GroupSizeChanged) {
if (node is Group) {
this.ValidLayout = false;
}
} else if ((reason&this.Conditions&LayoutChange.NodeAdded) == LayoutChange.NodeAdded) {
this.ValidLayout = false;
} else if ((reason&this.Conditions&LayoutChange.NodeRemoved) == LayoutChange.NodeRemoved) {
this.ValidLayout = false;
} else if ((reason&this.Conditions&LayoutChange.MemberAdded) == LayoutChange.MemberAdded) {
this.ValidLayout = false;
} else if ((reason&this.Conditions&LayoutChange.MemberRemoved) == LayoutChange.MemberRemoved) {
this.ValidLayout = false;
} else if ((reason&this.Conditions&LayoutChange.GroupLayoutChanged) == LayoutChange.GroupLayoutChanged) {
this.ValidLayout = false;
} else if ((reason&this.Conditions&LayoutChange.VisibleChanged) == LayoutChange.VisibleChanged) {
this.ValidLayout = false;
}
}
} else {
Link link = part as Link;
if (link != null) {
Layer layer = link.Layer;
if (layer != null && !layer.IsTemporary) {
if ((reason&this.Conditions&LayoutChange.LinkAdded) == LayoutChange.LinkAdded) {
this.ValidLayout = false;
} else if ((reason&this.Conditions&LayoutChange.LinkRemoved) == LayoutChange.LinkRemoved) {
this.ValidLayout = false;
} else if ((reason&this.Conditions&LayoutChange.VisibleChanged) == LayoutChange.VisibleChanged) {
this.ValidLayout = false;
}
}
}
}
}
/// <summary>
/// Declare that the <see cref="IDiagramLayout"/> including a given <see cref="Part"/>
/// is now invalid and may need to be performed again soon.
/// </summary>
/// <param name="p">must be a <see cref="Part"/></param>
/// <param name="change">
/// a hint on the reason for the need for a new layout;
/// this is used to decide whether a layout is really needed.
/// </param>
/// <remarks>
/// <para>
/// This is called by the diagram's <see cref="PartManager"/> each time
/// a node or link or group-membership is added or removed.
/// It calls <see cref="IDiagramLayout.Invalidate"/> to let the part's
/// responsible <see cref="IDiagramLayout"/> know that there's been a change
/// and that the layout may need to be performed again, depending on
/// the layout's <see cref="DiagramLayout.Conditions"/>.
/// </para>
/// <para>
/// This method ignores parts in temporary layers.
/// This method also does nothing if <see cref="SkipsInvalidate"/> is true
/// or if the <see cref="Northwoods.GoXam.Diagram.Model"/>'s
/// <see cref="IDiagramModel.SkipsUndoManager"/> property is true.
/// </para>
/// </remarks>
public virtual void InvalidateLayout(Part p, LayoutChange change) {
// ignore any invalidations during a layout
if (this.IsLayingOut) return;
// ignore any invalidations during a rebuild (replaced NodesSource or replaced Model or changed templates)
if (this.SkipsInvalidate) return;
// ignore any position changes during animation
if (change == LayoutChange.NodeLocationChanged && this.IsAnimating) return;
// ignore temporary objects
if (p != null && (p.Layer == null || p.Layer.IsTemporary)) return;
Diagram diagram = this.Diagram;
if (diagram == null) return;
// invalidate the layout for the part
IDiagramLayout layout;
if (p != null) {
if ((change == LayoutChange.MemberAdded || change == LayoutChange.MemberRemoved) && p is Group) {
layout = ((Group)p).Layout;
} else {
layout = GetLayoutBy(p);
}
} else {
layout = diagram.Layout;
}
//if (change != LayoutChange.NodeLocationChanged && change != LayoutChange.NodeSizeChanged && change != LayoutChange.GroupSizeChanged && !(diagram is Palette))
// Diagram.Debug("LayoutManager.InvalidateLayout: " + Diagram.Str(p) + " " + change.ToString() + " in " + (layout == null ? "(no layout)" : (layout.Group == null ? "(diagram)" : Diagram.Str(layout.Group))));
if (layout != null) layout.Invalidate(change, p);
}
// invalidate the Diagram.Layout when reparenting a part to or from top-level
private void InvalidateDiagramLayout(Part p, LayoutChange why) {
Diagram diagram = this.Diagram;
if (diagram == null) return;
// no side-effects during undo/redo
IDiagramModel model = diagram.Model;
if (model != null && model.IsChangingModel) return;
if (p != null && (p.Layer == null || p.Layer.IsTemporary)) return;
LayoutManager laymgr = diagram.LayoutManager;
if (laymgr != null) laymgr.InvalidateLayout(null, LayoutChange.All);
}
/// <summary>
/// Declare that this layout may be invalid, for a given reason.
/// </summary>
/// <param name="reason">a <see cref="LayoutChange"/> hint</param>
/// <param name="part">the <see cref="Northwoods.GoXam.Part"/> that changed</param>
/// <remarks>
/// For each layout in <see cref="Layouts"/> in which the given part participates,
/// call <see cref="IDiagramLayout.Invalidate"/> with the same arguments.
/// </remarks>
public void Invalidate(LayoutChange reason, Part part) {
foreach (IDiagramLayout layout in this.Layouts) {
if (reason == LayoutChange.All || layout.CanLayoutPart(part)) {
layout.Invalidate(reason, part);
}
}
}
/// <summary>
/// Declare that this layout might no longer be valid, depending on the change and the <see cref="Conditions"/>.
/// </summary>
/// <param name="reason">
/// A <see cref="LayoutChange"/> hint describing what change may have made the layout invalid.
/// If the value is <see cref="LayoutChange.All"/>, <see cref="ValidLayout"/> will be set to false unconditionally.
/// </param>
/// <param name="part">
/// the <see cref="Northwoods.GoXam.Part"/> that has changed
/// </param>
/// <remarks>
/// This method may set <see cref="ValidLayout"/> to false, if the <see cref="Conditions"/> are met.
/// This method does not request a new layout -- call <see cref="InvalidateLayout"/> if
/// you want to unconditionally set <see cref="ValidLayout"/> to false and ask the
/// <see cref="LayoutManager"/> to schedule perform layouts that are invalid.
/// </remarks>
/// <seealso cref="InvalidateLayout"/>
public virtual void Invalidate(LayoutChange reason, Part part)
{
if (!this.ValidLayout)
{
return;
}
// no Part needed for this cases:
if (reason == LayoutChange.All)
{
this.ValidLayout = false;
return;
}
// don't care any more?
if (this.InitialLayoutCompleted)
{
return;
}
// no Part needed for these cases:
if ((reason & this.Conditions & LayoutChange.DiagramLayoutChanged) == LayoutChange.DiagramLayoutChanged ||
(reason & this.Conditions & LayoutChange.ViewportSizeChanged) == LayoutChange.ViewportSizeChanged)
{
this.ValidLayout = false;
return;
}
// now require a Part
if (part == null)
{
return;
}
// the rest of the LayoutChanges involve a particular Part
Node node = part as Node;
if (node != null)
{
Layer layer = node.Layer;
if (layer != null && !layer.IsTemporary)
{
if ((reason & this.Conditions & LayoutChange.NodeLocationChanged) == LayoutChange.NodeLocationChanged)
{
if (!node.IsLinkLabel)
{
this.ValidLayout = false;
}
}
else if ((reason & this.Conditions & LayoutChange.NodeSizeChanged) == LayoutChange.NodeSizeChanged)
{
if (!node.IsLinkLabel)
{
this.ValidLayout = false;
}
}
else if ((reason & this.Conditions & LayoutChange.GroupSizeChanged) == LayoutChange.GroupSizeChanged)
{
if (node is Group)
{
this.ValidLayout = false;
}
}
else if ((reason & this.Conditions & LayoutChange.NodeAdded) == LayoutChange.NodeAdded)
{
this.ValidLayout = false;
}
else if ((reason & this.Conditions & LayoutChange.NodeRemoved) == LayoutChange.NodeRemoved)
{
this.ValidLayout = false;
}
else if ((reason & this.Conditions & LayoutChange.MemberAdded) == LayoutChange.MemberAdded)
{
this.ValidLayout = false;
}
else if ((reason & this.Conditions & LayoutChange.MemberRemoved) == LayoutChange.MemberRemoved)
{
this.ValidLayout = false;
}
else if ((reason & this.Conditions & LayoutChange.GroupLayoutChanged) == LayoutChange.GroupLayoutChanged)
{
this.ValidLayout = false;
}
else if ((reason & this.Conditions & LayoutChange.VisibleChanged) == LayoutChange.VisibleChanged)
{
this.ValidLayout = false;
}
}
}
else
{
Link link = part as Link;
if (link != null)
{
Layer layer = link.Layer;
if (layer != null && !layer.IsTemporary)
{
if ((reason & this.Conditions & LayoutChange.LinkAdded) == LayoutChange.LinkAdded)
{
this.ValidLayout = false;
}
else if ((reason & this.Conditions & LayoutChange.LinkRemoved) == LayoutChange.LinkRemoved)
{
this.ValidLayout = false;
}
else if ((reason & this.Conditions & LayoutChange.VisibleChanged) == LayoutChange.VisibleChanged)
{
this.ValidLayout = false;
}
}
}
}
}