protected override void OnChartContextMenuStripOpening(CancelEventArgs e)
{
if (SelectedObjects != null && SelectedObjects.Length > 0)
{
int count = SelectedObjects.Length;
Topic topic = mindMapView1.SelectedTopic;
int topicCount = mindMapView1.SelectedTopics.Length;
string urls = null;
MenuOpenHyperlink.Enabled = HasAnyUrl(SelectedObjects, out urls);
MenuOpenHyperlink.Available = MenuOpenHyperlink.Enabled;
MenuOpenHyperlink.ToolTipText = urls;
MenuAddTopic.Enabled = !ReadOnly && count == 1 && topicCount > 0 && !topic.IsRoot;
MenuAddSubTopic.Enabled = !ReadOnly && count == 1 && topicCount > 0;
MenuFolding.Available = topicCount > 0 && count == 1 && topic.HasChildren;
MenuExpandFolding.Enabled = topicCount > 0 && count == 1 && topic.Folded && !topic.IsRoot;
MenuCollapseFolding.Enabled = topicCount > 0 && count == 1 && !topic.Folded && !topic.IsRoot;
MenuToggleFolding.Enabled = topicCount > 0 && count == 1 && !topic.IsRoot;
MenuExpandAll.Enabled = topicCount > 0 && count == 1;
MenuCollapseAll.Enabled = topicCount > 0 && count == 1;
MenuAdd.Enabled = true;
MenuAddIcon.Enabled = topicCount > 0;
MenuAddProgressBar.Enabled = topicCount > 0;
MenuAddRemark.Enabled = topicCount > 0;
MenuNewChartFromHere.Available = topicCount == 1;
bool hasLink = false;
foreach (var mo in SelectedObjects)
{
if (mo is Link)
{
hasLink = true;
break;
}
}
MenuLink.Available = hasLink;
}
else
{
MenuOpenHyperlink.Enabled = false;
MenuOpenHyperlink.ToolTipText = null;
MenuAddTopic.Enabled = false;
MenuAddSubTopic.Enabled = false;
MenuFolding.Available = false;
MenuAdd.Enabled = false;
MenuLink.Available = false;
MenuNewChartFromHere.Available = false;
}
MenuCut.Enabled = mindMapView1.CanCut;
MenuCopy.Enabled = mindMapView1.CanCopy;
MenuPaste.Enabled = mindMapView1.CanPaste;
MenuDelete.Enabled = mindMapView1.CanDelete;
MenuEdit.Enabled = mindMapView1.CanEdit;
MenuAdvance.Available = MenuAdvance.HasAvailableItems();
ChartContextMenuStrip.SmartHideSeparators();
}