private void AddCommentCollectionMenuOptions(ContextMenu newContextMenu, string title)
{
// Make the header in the menu for the comment-specific options
MenuItem menuItem = new MenuItem();
menuItem.Header = title;
newContextMenu.Items.Add(menuItem);
// We're using this item as a label, so don't let the user click it
menuItem.IsHitTestVisible = false;
// Change the colors to signal to the user that it's a label
menuItem.Background = new SolidColorBrush(Colors.LightGray);
menuItem.Foreground = new SolidColorBrush(Color.FromArgb(255, 100, 100, 100));
menuItem.FontWeight = FontWeights.Bold;
menuItem = new MenuItem();
menuItem.Header = "Add new comment";
menuItem.Tag = m_canvas.SelectedElement;
newContextMenu.Items.Add(menuItem);
// Use an anonymous delegate to handle the click event
menuItem.Click += delegate(object sender, RoutedEventArgs e)
{
MenuItem tempMI = sender as MenuItem;
PFD.Streams.StreamControl stream = tempMI.Tag as PFD.Streams.StreamControl;
ProcessUnitControl unit = tempMI.Tag as ProcessUnitControl;
// Get a reference to the comment collection
IList <StickyNote> comments;
if (null != stream)
{
comments = stream.Stream.Comments;
}
else
{
comments = unit.ProcessUnit.Comments;
}
// Compute the location for the new comment
MathCore.Vector location = StickyNoteControl.ComputeNewCommentNoteLocation(
m_canvas, tempMI.Tag, 100.0, 100.0);
// Create the new sticky note and add it to the workspace. Event handlers will update
// the UI appropriately
StickyNote sn = new StickyNote()
{
Width = 100.0,
Height = 100.0,
LocationX = location.X,
LocationY = location.Y
};
comments.Add(sn);
// Add an undo that will remove the comment
m_workspace.AddUndo(new UndoRedoCollection("Undo creation of comment",
new RemoveComment(comments, comments.IndexOf(sn))));
// Make sure to remove the popup menu from the canvas
m_canvas.Children.Remove(m_contextMenu);
m_contextMenu = null;
// Flip back to the default state for the canvas (null)
m_canvas.CurrentState = null;
};
string objName = "selected object";
if (m_canvas.SelectedElement is ProcessUnitControl)
{
objName = (m_canvas.SelectedElement as ProcessUnitControl).ProcessUnit.Label;
}
else if (m_canvas.SelectedElement is ChemProV.PFD.Streams.StreamControl)
{
objName = "selected stream";
}
// Add a new menu item to hide all comments
menuItem = new MenuItem();
menuItem.Header = "Hide all comments for " + objName;
menuItem.Tag = m_canvas.SelectedElement;
newContextMenu.Items.Add(menuItem);
menuItem.Click += delegate(object sender, RoutedEventArgs e)
{
MenuItem tempMI = sender as MenuItem;
(tempMI.Tag as UI.ICommentControlManager).HideAllComments();
// Make sure to remove the popup menu from the canvas
m_canvas.Children.Remove(m_contextMenu);
m_contextMenu = null;
// Flip back to the default state for the canvas (null)
m_canvas.CurrentState = null;
};
// Add one to show all comments too
menuItem = new MenuItem();
menuItem.Header = "Show all comments for " + objName;
menuItem.Tag = m_canvas.SelectedElement;
newContextMenu.Items.Add(menuItem);
menuItem.Click += delegate(object sender, RoutedEventArgs e)
{
MenuItem tempMI = sender as MenuItem;
(tempMI.Tag as UI.ICommentControlManager).ShowAllComments();
// Make sure to remove the popup menu from the canvas
m_canvas.Children.Remove(m_contextMenu);
m_contextMenu = null;
// Flip back to the default state for the canvas (null)
m_canvas.CurrentState = null;
};
}
public void MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
// If the placement icon is null then we don't do anything
if (null == m_placementIcon)
{
return;
}
// Remove the placement icon from the canvas
m_canvas.RemoveChild(m_placementIcon);
m_placementIcon = null;
// Make sure we don't leave anything highlighted
UnhighlightHover();
Point mousePt = e.GetPosition(m_canvas);
// Get a reference to the workspace
Workspace ws = m_canvas.GetWorkspace();
// There are two possibilities for a mouse-down. The first is that the mouse isn't over
// any object that can have comments created for it, in which case we create a free-
// floating comment. The second is that there is and we need to create an anchored comment.
UIElement uie = m_canvas.GetChildAtIncludeStreams(mousePt);
if (uie is ProcessUnitControl || uie is PFD.Streams.StreamControl)
{
// All we need to do is add a comment to the appropriate collection in the workspace,
// but we need to compute a smart location for it. There's a static method in the
// sticky note control that does this for is.
MathCore.Vector pos = StickyNoteControl.ComputeNewCommentNoteLocation(
m_canvas, uie, 100.0, 100.0);
// Create the new sticky note and add it to the workspace. Event handlers will update
// the UI appropriately.
StickyNote sn = new StickyNote()
{
Width = 100.0,
Height = 100.0,
LocationX = pos.X,
LocationY = pos.Y
};
if (uie is ProcessUnitControl)
{
(uie as ProcessUnitControl).ProcessUnit.Comments.Add(sn);
}
else
{
(uie as PFD.Streams.StreamControl).Stream.Comments.Add(sn);
}
// Create an undo
m_canvas.GetWorkspace().AddUndo(new UndoRedoCollection(
"Undo creation of anchored comment", new Logic.Undos.RemoveStickyNote(sn)));
// Tell the control palette to switch back to select mode. It will also set the drawing
// canvas's state to null
m_creator.SwitchToSelect();
}
else
{
// This means we need to create a free-floating sticky note.
StickyNote note = new StickyNote();
note.Height = note.Width = 100.0;
note.LocationX = mousePt.X;
note.LocationY = mousePt.Y;
// Add it to the workspace. Event subscribers will update the UI automatically.
m_canvas.GetWorkspace().StickyNotes.Add(note);
// Add an undo that will remove the sticky note
m_canvas.GetWorkspace().AddUndo(new UndoRedoCollection(
"Undo creation of free-floating comment",
new Logic.Undos.RemoveStickyNote(note)));
// Tell the control palette to switch back to select mode. It will also set the drawing
// canvas's state to null
m_creator.SwitchToSelect();
}
}
