private void graphContextMenuStrip_Opening(object sender, CancelEventArgs e)
{
viewToolStripMenuItem.Enabled = false;
breakpointToolStripMenuItem.Enabled = false;
breakpointToolStripMenuItem.Checked = false;
if (graphTreeView.SelectedNode != null)
{
IOperator op = GetOperatorTag(graphTreeView.SelectedNode);
if (op != null)
{
Type viewType = MainFormManager.GetDefaultViewType(op.GetType());
if (viewType != null)
{
viewToolStripMenuItem.Enabled = true;
viewToolStripMenuItem.Tag = op;
}
breakpointToolStripMenuItem.Enabled = !Locked;
breakpointToolStripMenuItem.Tag = op;
if (op.Breakpoint)
{
breakpointToolStripMenuItem.Checked = true;
}
}
}
}
public IContentView ShowContent(IContent content)
{
if (content == null)
{
throw new ArgumentNullException("Content cannot be null.");
}
Type viewType = MainFormManager.GetDefaultViewType(content.GetType());
if (viewType != null)
{
return(ShowContent(content, viewType));
}
return(null);
}
protected override void OnContentChanged()
{
viewContextMenuStrip.Item = Content;
//change ViewType if view of ViewType can not show content or is null
if (Content != null)
{
if (!ViewCanShowContent(viewType, Content))
{
Type defaultViewType = MainFormManager.GetDefaultViewType(Content.GetType());
if (cachedView != null && cachedView.GetType() == defaultViewType)
{
ActiveView = cachedView;
}
else if (defaultViewType != null)
{
ViewType = defaultViewType;
}
else if (viewContextMenuStrip.Items.Count > 0) // create first available view if no default view is available
{
ViewType = (Type)viewContextMenuStrip.Items[0].Tag;
}
else
{
ViewType = null;
ActiveView = null;
}
}
if (ActiveView != null)
{
ActiveView.Content = Content;
}
}
else
{
ActiveView = null;
}
UpdateLabels();
UpdateActiveMenuItem();
}