/// <inheritdoc />
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value is IStreamTreeNode)
{
IStreamTreeNode streamTreeNode = value as IStreamTreeNode;
if (streamTreeNode.IsStream)
{
var commands = PsiStudioContext.Instance.GetVisualizeStreamCommands(streamTreeNode);
if (commands != null && commands.Count > 0)
{
return(Visibility.Visible);
}
}
}
return(Visibility.Hidden);
}
private void StreamTreeNode_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
// If the left button is also pressed, then the user is probably wanting to
// initiate a drag operation of the stream into the Visualization Container
if (e.LeftButton == MouseButtonState.Pressed)
{
// Get the Tree Item that sent the event
StackPanel treeNode = sender as StackPanel;
if (treeNode != null)
{
IStreamTreeNode streamTreeNode = treeNode.DataContext as IStreamTreeNode;
if (streamTreeNode != null && streamTreeNode.CanVisualize)
{
// Begin the Drag & Drop operation
DataObject data = new DataObject();
data.SetData(DragDropDataName.DragDropOperation, DragDropOperation.DragDropStream);
data.SetData(DragDropDataName.StreamTreeNode, streamTreeNode);
DragDrop.DoDragDrop(treeNode, data, DragDropEffects.Move);
}
}
}
}
private bool ExecuteCommandIfPresent(List <TypeKeyedActionCommand> commands, string commandName, IStreamTreeNode streamTreeNode)
{
// Check if the command is in the list
TypeKeyedActionCommand command = commands.Find(o => o.DisplayName.Equals(commandName, StringComparison.Ordinal));
if (command != null)
{
VisualizationContainer visualizationContainer = this.DataContext as VisualizationContainer;
// If we're adding the stream to an existing Visualization Panel, then make sure it's the selected panel first.
// Otherwise, make sure the last current panel is selected so that the new panel is created at the bottom.
if (this.hitTestResult != null)
{
VisualizationPanel visualizationPanel = this.hitTestResult.DataContext as VisualizationPanel;
visualizationContainer.CurrentPanel = visualizationPanel;
}
else if (visualizationContainer.Panels.Count > 0)
{
visualizationContainer.CurrentPanel = visualizationContainer.Panels[visualizationContainer.Panels.Count - 1];
}
// Execute the command
command.Execute(streamTreeNode);
return(true);
}
return(false);
}
private void DropStream(DragEventArgs e)
{
IStreamTreeNode streamTreeNode = e.Data.GetData(DragDropDataName.StreamTreeNode) as IStreamTreeNode;
if (streamTreeNode != null)
{
// Get the list of Visualization Commands we can execute on this stream
List <TypeKeyedActionCommand> commands = PsiStudioContext.Instance.GetVisualizeStreamCommands(streamTreeNode);
// Find out if the mouse is above an existing Visualization Panel
this.hitTestResult = null;
Point pt = e.GetPosition(this.Items);
VisualTreeHelper.HitTest(
this.Items,
new HitTestFilterCallback(this.HitTestFilter),
new HitTestResultCallback(this.HitTestResultCallback),
new PointHitTestParameters(pt));
// If we're above an existing Visualization Panel and there exists some "plot" commands, then execute
// the "plot in new panel" command, otherwise execute whatever plot or visualize command we can find.
if (this.hitTestResult != null)
{
if (this.ExecuteCommandIfPresent(commands, ContextMenuName.Plot, streamTreeNode))
{
return;
}
if (this.ExecuteCommandIfPresent(commands, ContextMenuName.PlotAsMilliseconds, streamTreeNode))
{
return;
}
}
else
{
if (this.ExecuteCommandIfPresent(commands, ContextMenuName.PlotInNewPanel, streamTreeNode))
{
return;
}
if (this.ExecuteCommandIfPresent(commands, ContextMenuName.PlotAsMillisecondsInNewPanel, streamTreeNode))
{
return;
}
if (this.ExecuteCommandIfPresent(commands, ContextMenuName.Visualize, streamTreeNode))
{
return;
}
if (this.ExecuteCommandIfPresent(commands, ContextMenuName.VisualizeAs2DDepth, streamTreeNode))
{
return;
}
if (this.ExecuteCommandIfPresent(commands, ContextMenuName.VisualizeAs3DDepth, streamTreeNode))
{
return;
}
if (this.ExecuteCommandIfPresent(commands, ContextMenuName.VisualizeAsPlanarDirection, streamTreeNode))
{
return;
}
}
}
}
