ptolemy.vergil.basic
Class OffsetMoMLChangeRequest
java.lang.Object
ptolemy.kernel.util.ChangeRequest
ptolemy.moml.MoMLChangeRequest
ptolemy.vergil.basic.OffsetMoMLChangeRequest
- Direct Known Subclasses:
- TransformationEditor.PasteMoMLChangeRequest
public class OffsetMoMLChangeRequest
- extends MoMLChangeRequest
A mutation request specified in MoML that offsets any objects
that are created in the toplevel.
This class is used by the paste action in Vergil so that the
pasted icon does not overlap the original icon.
- Since:
- Ptolemy II 6.1
- Version:
- $Id: OffsetMoMLChangeRequest.java 57040 2010-01-27 20:52:32Z cxh $
- Author:
- Christopher Brooks, based on code from BasicGraphFrame by Edward A. Lee
- Accepted Rating:
- Proposed Rating:
Field Summary |
private static int |
_PASTE_OFFSET
Offset used when pasting objects. |
Constructor Summary |
OffsetMoMLChangeRequest(java.lang.Object originator,
NamedObj context,
java.lang.String request)
Construct a mutation request to be executed in the specified
context. |
Method Summary |
protected void |
_postParse(MoMLParser parser)
Offset the locations of top level objects that are created
by the change request. |
protected void |
_preParse(MoMLParser parser)
Clear the list of top objects. |
Methods inherited from class ptolemy.kernel.util.ChangeRequest |
addChangeListener, execute, getDescription, getLocality, getSource, isErrorReported, isPersistent, isStructuralChange, removeChangeListener, setDescription, setErrorReported, setListeners, setPersistent, waitForCompletion |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
_PASTE_OFFSET
private static int _PASTE_OFFSET
- Offset used when pasting objects.
OffsetMoMLChangeRequest
public OffsetMoMLChangeRequest(java.lang.Object originator,
NamedObj context,
java.lang.String request)
- Construct a mutation request to be executed in the specified
context. The context is typically a Ptolemy II container,
such as an entity, within which the objects specified by the
MoML code will be placed. This method resets and uses a
parser that is a static member of this class.
A listener to changes will probably want to check the originator
so that when it is notified of errors or successful completion
of changes, it can tell whether the change is one it requested.
Alternatively, it can call waitForCompletion().
All external references are assumed to be absolute URLs. Whenever
possible, use a different constructor that specifies the base.
- Parameters:
originator
- The originator of the change request.context
- The context in which to execute the MoML.request
- The mutation request in MoML.
_postParse
protected void _postParse(MoMLParser parser)
- Offset the locations of top level objects that are created
by the change request.
- Overrides:
_postParse
in class MoMLChangeRequest
- Parameters:
parser
- The parser
_preParse
protected void _preParse(MoMLParser parser)
- Clear the list of top objects.
- Overrides:
_preParse
in class MoMLChangeRequest
- Parameters:
parser
- The parser