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Normal Topic UndoManager can Ignore box.Move()? (Read 2695 times)
alesdario
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UndoManager can Ignore box.Move()?
Nov 23rd, 2007 at 12:24pm
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Hy stoyo.

I'm trying to move a box when the lane where the box is contained is modified. But i'd like that FlowChart.UndoManager will ignore this operation.

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private void grid_CellBoundsChanged(object sender, CellBoundsEventArgs e)
{
  ....

    box.Move(box.BoundingRect.X,(e.NewBounds.Top + box.Distance));

  ....
}

In this event i want that UndoManager ignore box.Move. Is it possible?

Tanks.
  
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alesdario
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Re: UndoManager can Ignore box.Move()?
Reply #1 - Nov 23rd, 2007 at 1:04pm
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As an alternative, is possible to have access to

flow.UndoManager.History.Commands[index] parameters?

Tanks.
  
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Stoyo
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Re: UndoManager can Ignore box.Move()?
Reply #2 - Nov 23rd, 2007 at 1:30pm
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Hi,

Try to filter out the ModifyItemCmd created for the box movement. Set some boolean flag before you start moving the boxes, and in the ActionRecording event handler set Cancel = true when that flag is set and the typeof(command) is ModifyItemCmd.

I hope that helps,
Stoyan
  
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alesdario
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Re: UndoManager can Ignore box.Move()?
Reply #3 - Nov 23rd, 2007 at 1:51pm
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Perfect. Tanks
  
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alesdario
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Re: UndoManager can Ignore box.Move()?
Reply #4 - Nov 23rd, 2007 at 2:01pm
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Is also possible set the point where the undoManager will move the box after undoManager.Undo()?
  
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Stoyo
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Re: UndoManager can Ignore box.Move()?
Reply #5 - Nov 26th, 2007 at 7:44am
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The node position won't be restored if you filter the command when ActionRecording is raised. You could create a composite command that contains all ModifyItemCmd instances created by the Move method, and also add to it your own command object that resizes the lane grid when undone or redone. Then calling Undo or Redo will move all nodes and resize the lane as a single operation.

I hope that helps,
Stoyan
  
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