/// <summary>
/// Called after the layout has been calculated.
/// </summary>
/// <remarks>
/// Applies the layout in an animation and cleans up. Calls OnDone to raise the Done event after the animation has been completed.
/// </remarks>
/// <param name="graph">The graph to apply the layout to.</param>
/// <param name="moduleContext">The module context.</param>
/// <param name="compoundEdit">The undo edit which wraps the layout. It was created in <see cref="StartWithIGraph"/> and will be closed here.</param>
protected virtual async Task LayoutDone(IGraph graph, ILookup moduleContext, ICompoundEdit compoundEdit)
{
if (abortDialog != null)
{
if (abortDialog.IsVisible)
{
abortDialog.Close();
}
abortDialog = null;
}
GraphControl view = moduleContext.Lookup <GraphControl>();
if (LayoutMorphingEnabled && view != null)
{
var morphingAnimation =
graph.CreateLayoutAnimation(layoutGraph, TimeSpan.FromSeconds(1));
Rectangle2D box =
LayoutGraphUtilities.GetBoundingBox(layoutGraph, layoutGraph.GetNodeCursor(), layoutGraph.GetEdgeCursor());
RectD targetBounds = box.ToRectD();
ViewportAnimation vpAnim =
new ViewportAnimation(view,
targetBounds, TimeSpan.FromSeconds(1))
{
MaximumTargetZoom = 1.0d, TargetViewMargins = view.ContentMargins
};
var animations = new List <IAnimation>();
animations.Add(morphingAnimation);
animations.Add(CreateTableAnimations());
if (ViewPortMorphingEnabled)
{
animations.Add(vpAnim);
}
TableLayoutConfigurator.CleanUp(graph);
Animator animator = new Animator(view);
await animator.Animate(animations.CreateParallelAnimation().CreateEasedAnimation());
try {
compoundEdit.Commit();
view.UpdateContentRect();
} finally {
OnDone(new LayoutEventArgs());
}
}
else
{
layoutGraph.CommitLayoutToOriginalGraph();
RestoreTableLayout();
compoundEdit.Commit();
if (view != null)
{
view.UpdateContentRect();
}
OnDone(new LayoutEventArgs());
}
}
private void OnDone(object sender, EventArgs eventArgs)
{
if (layoutGraph != null)
{
layoutGraph.RemoveDataProvider(AbortHandler.AbortHandlerDpKey);
layoutGraph = null;
}
graph = null;
if (abortDialog != null)
{
abortDialog.Close();
abortDialog = null;
}
}
/// <summary>
/// Executes the module on the given graph using the provided context.
/// </summary>
/// <remarks>
/// The layout will be calculated <see cref="RunInBackground">optionally</see>
/// in a separate thread in method <see cref="RunModuleAsync"/>.
/// </remarks>
/// <param name="graph">The graph to execute on.</param>
/// <param name="newContext">The context to use. This method will query a <c>ISelectionModel<IModelItem></c></param>
/// for the selected nodes and edges and the <c>GraphControl</c> to morph the layout.
protected virtual async Task StartWithIGraph(IGraph graph, ILookup newContext)
{
this.graph = graph;
if (ShouldConfigureTableLayout())
{
PrepareTableLayout();
}
ISelectionModel <IModelItem> selectionModel = newContext.Lookup <ISelectionModel <IModelItem> >();
LayoutGraphAdapter adapter = new LayoutGraphAdapter(graph, selectionModel);
this.layoutGraph = adapter.CreateCopiedLayoutGraph();
ILookup additionalLookup = Lookups.Single(layoutGraph, typeof(LayoutGraph));
ILookup wrappedLookup = Lookups.Wrapped(newContext, additionalLookup);
try {
ICompoundEdit compoundEdit = graph.BeginEdit("Layout", "Layout");
CheckReentrant(wrappedLookup);
ConfigureModule();
if (RunInBackground)
{
// without the LayoutExecutor helper class on the layout graph side of things, we register the aborthandler
// to the layout graph with the utility method provided by AbortHandler
var abortHandler = AbortHandler.CreateForGraph(layoutGraph);
// now create the dialog that controls the abort handler
abortDialog = new AbortDialog {
AbortHandler = abortHandler, Owner = Application.Current.MainWindow
};
// start the layout in another thread.
var layoutThread = new Thread(async() => await RunModuleAsync(wrappedLookup, graph, compoundEdit));
// now if we are not doing a quick layout - and if it takes more than a few seconds, we open the dialog to
// enable the user to stop or cancel the execution
var showDialogTimer = new DispatcherTimer(DispatcherPriority.Normal, abortDialog.Dispatcher)
{
Interval = TimeSpan.FromSeconds(2)
};
showDialogTimer.Tick += delegate {
// it could be that the layout is already done - so check whether we still
// need to open the dialog
var dialogInstance = abortDialog;
if (dialogInstance != null)
{
// open the abort dialog
dialogInstance.Show();
}
// we only want to let it go off once - so stop the timer
showDialogTimer.Stop();
};
// kick-off the timer and the layout
showDialogTimer.Start();
layoutThread.Start();
}
else
{
await RunModuleAsync(wrappedLookup, graph, compoundEdit);
}
} catch (Exception e) {
FreeReentrant();
TableLayoutConfigurator.CleanUp(graph);
OnDone(new LayoutEventArgs(e));
//optionally do something here...
}
}