void LayoutGraph(ObjectGraph graph)
{
this.oldPosGraph = this.currentPosGraph;
Log.Debug("Debugger visualizer: Calculating graph layout");
var layoutDirection = layoutViewModel.SelectedEnumValue;
this.currentPosGraph = new TreeLayout(layoutDirection).CalculateLayout(graph, expanded);
Log.Debug("Debugger visualizer: Graph layout done");
RegisterExpandCollapseEvents(this.currentPosGraph);
var graphDiff = new GraphMatcher().MatchGraphs(oldPosGraph, currentPosGraph);
Log.Debug("Debugger visualizer: starting graph animation");
this.graphDrawer.StartAnimation(oldPosGraph, currentPosGraph, graphDiff);
}
public void Refresh()
{
// Almost all of the blocking is done ContentPropertyNode.Evaluate,
// which is being called by WPF for all the properties.
// It would be better if we were filling the node texts ourselves in a loop,
// so that we could cancel any time. UI would redraw gradually thanks to INotifyPropertyChanged.
try {
Debugger.AddIn.TreeModel.Utils.DoEvents(debuggerService.DebuggedProcess);
} catch (AbortedBecauseDebuggeeResumedException) {
Log.Warn("Object graph - debuggee resumed, cancelling refresh.");
this.graphDrawer.ClearCanvas();
return;
}
ClearErrorMessage();
if (string.IsNullOrEmpty(txtExpression.Text))
{
this.graphDrawer.ClearCanvas();
return;
}
if (debuggerService.IsProcessRunning)
{
// "Process not paused" exception still occurs
ErrorMessage("Cannot inspect when the process is running.");
return;
}
bool isSuccess = true;
try {
this.objectGraph = RebuildGraph(txtExpression.Text);
} catch (DebuggerVisualizerException ex) {
isSuccess = false;
ErrorMessage(ex.Message);
} catch (Debugger.GetValueException ex) {
isSuccess = false;
ErrorMessage("Expression cannot be evaluated - " + ex.Message);
}
if (isSuccess)
{
LayoutGraph(this.objectGraph);
}
else
{
this.graphDrawer.ClearCanvas();
}
}
void LayoutGraph(ObjectGraph graph)
{
if (this.oldPosGraph != null)
{
foreach (var oldNode in this.oldPosGraph.Nodes)
{
// controls from old graph would be garbage collected, reuse them
NodeControlCache.Instance.ReturnForReuse(oldNode.NodeVisualControl);
}
}
this.oldPosGraph = this.currentPosGraph;
Log.Debug("Debugger visualizer: Calculating graph layout");
var layoutDirection = layoutViewModel.SelectedEnumValue;
this.currentPosGraph = new TreeLayout(layoutDirection).CalculateLayout(graph, expanded);
Log.Debug("Debugger visualizer: Graph layout done");
RegisterExpandCollapseEvents(this.currentPosGraph);
var graphDiff = new GraphMatcher().MatchGraphs(oldPosGraph, currentPosGraph);
Log.Debug("Debugger visualizer: starting graph animation");
this.graphDrawer.StartAnimation(oldPosGraph, currentPosGraph, graphDiff);
}
ObjectGraph RebuildGraph(string expression)
{
this.objectGraphBuilder = new ObjectGraphBuilder(debuggerService);
Log.Debug("Debugger visualizer: Building graph for expression: " + txtExpression.Text);
return(this.objectGraphBuilder.BuildGraphForExpression(expression, expanded.Expressions));
}
