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Need programmatic access to ArrangeAction [message #76335]

Thu, 09 November 2006 20:03

Eclipse User

Originally posted by: awm_abu.yahoo.com

Hi all,

I want to force my diagram to lay itself out when the zoom level changes as
I rearrange them based on this.
It will work if I choosed the Arrange All action on the GUI.
So I was thinking if I could invoke this action programmatically then it
would work.
So anyone know how I can get a handle on the action ?

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Re: Need programmatic access to ArrangeAction [message #76351 is a reply to message #76335]

Thu, 09 November 2006 20:16

Mohammed Mostafa

Messages: 143
Registered: July 2009

Senior Member

Alan;
You can do something like this
ArrangeRequest arrangeRequest =
new ArrangeRequest(RequestConstants.REQ_ARRANGE_DEFERRED);
request.setPartsToArrange(editParts);
Command arrangeCmd = containerEP.getCommand(request);

then you can compose this arrange command with your zoom command

Alan wrote:
> Hi all,
>
> I want to force my diagram to lay itself out when the zoom level changes as
> I rearrange them based on this.
> It will work if I choosed the Arrange All action on the GUI.
> So I was thinking if I could invoke this action programmatically then it
> would work.
> So anyone know how I can get a handle on the action ?
>
>
>
>

Report message to a moderator

Re: Need programmatic access to ArrangeAction [message #76887 is a reply to message #76351]

Sat, 11 November 2006 16:14

Eclipse User

Originally posted by: awm_abu.yahoo.com

This is a multi-part message in MIME format.

------=_NextPart_000_002A_01C705AC.6FF094E0
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Thanks for the reply.

Ok so here's how I got on.
I added a ZoomListener to the ZoomManager I get from the =
RenderedDiagramRootEditPart which is the parent of my DiagramEditPart.

When I receive a zoomChanged event I run the following code:

public void zoomChanged(double zoom) {try{ArrangeRequest arrangeRequest =
=3Dnew ArrangeRequest(RequestConstants.REQ_ARRANGE_DEFERRED);List l =3D =
getChildren();arrangeRequest.setPartsToArrange(l);Command arrangeCmd =3D =
getCommand(arrangeRequest);arrangeCmd.execute();}catch(Excep tion =
e){e.printStackTrace();}}When I run this I get a NullPointer exception =
like the below :java.lang.NullPointerExceptionat =
org.eclipse.gmf.runtime.diagram.ui.commands.DeferredLayoutCo mmand$1.run(D=
eferredLayoutCommand.java:151)at =
org.eclipse.gmf.runtime.diagram.ui.util.EditPartUtil.synchro nizeRunnableT=
oMainThread(EditPartUtil.java:72)at =
org.eclipse.gmf.runtime.diagram.ui.commands.DeferredLayoutCo mmand.doExecu=
teWithResult(DeferredLayoutCommand.java:185)at =
org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTr ansactionalCo=
mmand.doExecute(AbstractTransactionalCommand.java:245)at =
org.eclipse.emf.workspace.AbstractEMFOperation.execute(Abstr actEMFOperati=
on.java:127)at =
org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy.ex ecute(IComman=
dProxy.java:64)The line in question is List editParts =3D new =
ArrayList(viewAdapters.size());My viewAdapters are null...any idea why =
?Thanks again.

"Mohammed Mostafa" <mmostafa@ca.ibm.com> wrote in message =
news:ej02cs$oj2$1@utils.eclipse.org...
> Alan;
> You can do something like this
> ArrangeRequest arrangeRequest =3D
> new ArrangeRequest(RequestConstants.REQ_ARRANGE_DEFERRED);
> request.setPartsToArrange(editParts);
> Command arrangeCmd =3D containerEP.getCommand(request);
>=20
> then you can compose this arrange command with your zoom command
>=20
>=20
>=20
> Alan wrote:
>> Hi all,
>>=20
>> I want to force my diagram to lay itself out when the zoom level =
changes as=20
>> I rearrange them based on this.
>> It will work if I choosed the Arrange All action on the GUI.
>> So I was thinking if I could invoke this action programmatically then =
it=20
>> would work.
>> So anyone know how I can get a handle on the action ?
>>=20
>>=20
>>=20
>>
------=_NextPart_000_002A_01C705AC.6FF094E0
Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2900.2963" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY>
<DIV>Thanks for the reply.</DIV>
<DIV> </DIV>
<DIV>Ok so here's how I got on.</DIV>
<DIV>I added a ZoomListener to the =
ZoomManager I get=20
from the RenderedDiagramRootEditPart which is the parent of my=20
DiagramEditPart.</DIV>
<DIV> </DIV>
<DIV>When I receive a zoomChanged event I =
run the=20
following code:</DIV>
<DIV> </DIV><PRE>public void zoomChanged(double zoom) {</PRE><PRE>try</PRE><PRE>{</PRE><PRE>ArrangeRequest arrangeRequest =3D</PRE><PRE>new =
ArrangeRequest(RequestConstants.REQ_ARRANGE_DEFERRED);</PRE><PRE><=
FONT size=3D2>List l =3D getChildren();</PRE><PRE>arrangeRequest.setPartsToArrange(l);</PRE ><PRE>Command arrangeCmd =3D =
getCommand(arrangeRequest);</PRE><PRE>arrangeCmd.execute();</PRE><PRE>}</PRE><PRE>catch(Exception =
e)</PRE><PRE>{</PRE><PRE>e.printStackTrace();</PRE><PRE>}</PRE><PRE>}</PRE><PRE> </PRE><PRE>When I run this I get a =
NullPointer exception like the below :</PRE><PRE>java.lang.NullPointerExceptionat =
org.eclipse.gmf.runtime.diagram.ui.commands.DeferredLayoutCo mmand$1.run( <=
/FONT>DeferredLayoutCommand.java:151)at =
org.eclipse.gmf.runtime.diagram.ui.util.EditPartUtil.synchro nizeRunnableT=
oMainThread(EditPartUtil.java:72)at =
org.eclipse.gmf.runtime.diagram.ui.commands.DeferredLayoutCo mmand.doExecu=
teWithResult(DeferredLayoutCommand.java:185)at =
org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTr ansactionalCo=
mmand.doExecute(AbstractTransactionalCommand.java:245 )at =
org.eclipse.emf.workspace.AbstractEMFOperation.execute(AbstractEMFOperation.java:127)at =
org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy.ex ecute( =
ICommandProxy.java:64)  The line in question is  List editParts =3D =
new ArrayList(viewAdapters.size()); My viewAdapters are null...any idea why =
?  Thanks again.</PRE><PRE> </PRE><PRE> </PRE>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>"Mohammed Mostafa" <<A=20
href=3D"mailto:mmostafa@ca.ibm.com">mmostafa@ca.ibm.com</A>> =
wrote in=20
message <A href=3D"news:ej02cs$oj2$1@utils.eclipse.org">news:ej02cs$oj2$1@utils.eclipse.org</A>...</DIV>>=20
Alan; >    You can do something like=20
this >     &a mp;nbsp; ArrangeRequest =
arrangeRequest=20
=3D > new=20
ArrangeRequest(RequestConstants.REQ_ARRANGE_DEFERRED); > &nbsp=
;    =20
request.setPartsToArrange(editParts); >    &nbs=
p; =20
Command arrangeCmd =3D containerEP.getCommand(request); > > =
then you=20
can compose this arrange command with your zoom command > > =

 > > Alan wrote: >> Hi all, >> =
 >> I=20
want to force my diagram to lay itself out when the zoom level changes =
as=20
 >> I rearrange them based on this. >> It will work if =
I=20
choosed the Arrange All action on the GUI. >> So I was thinking =
if I=20
could invoke this action programmatically then it >> would=20
work. >> So anyone know how I can get a handle on the action=20
? >> >> >> =
 >></BODY></HTML>

------=_NextPart_000_002A_01C705AC.6FF094E0--

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Re: Need programmatic access to ArrangeAction [message #77213 is a reply to message #76887]

Mon, 13 November 2006 16:20

Mohammed Mostafa

Messages: 143
Registered: July 2009

Senior Member

Hi Alan;

The DeferredLayoutCommand, assumes that ViewAdapters had been set on
the Arrange Request that is why you get the NULL pointer exception, try
to use ActionIds.ACTION_ARRANGE_ALL instead of
RequestConstants.REQ_ARRANGE_DEFERRED this should avoid the pass that
cause the NULL pointer exception.

Alan wrote:
> Thanks for the reply.
>
> Ok so here's how I got on.
> I added a ZoomListener to the ZoomManager I get from the
> RenderedDiagramRootEditPart which is the parent of my DiagramEditPart.
>
> When I receive a zoomChanged event I run the following code:
>
>
> public void zoomChanged(double zoom) {
>
> try
>
> {
>
> ArrangeRequest arrangeRequest =
>
> new ArrangeRequest(RequestConstants.REQ_ARRANGE_DEFERRED);
>
> List l = getChildren();
>
> arrangeRequest.setPartsToArrange(l);
>
> Command arrangeCmd = getCommand(arrangeRequest);
>
> arrangeCmd.execute();
>
> }
>
> catch(Exception e)
>
> {
>
> e.printStackTrace();
>
> }
>
> }
>
>
>
> When I run this I get a NullPointer exception like the below :
>
> __
>
> _java.lang.NullPointerException_
>
> at
> org.eclipse.gmf.runtime.diagram.ui.commands.DeferredLayoutCo mmand$1.run(_DeferredLayoutCommand.java:151_)
>
> at
> org.eclipse.gmf.runtime.diagram.ui.util.EditPartUtil.synchro nizeRunnableToMainThread(_EditPartUtil.java:72_)
>
> at
> org.eclipse.gmf.runtime.diagram.ui.commands.DeferredLayoutCo mmand.doExecuteWithResult(_DeferredLayoutCommand.java:185_)
>
> at
> org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTr ansactionalCommand.doExecute(_AbstractTransactionalCommand.j ava:245_)
>
> at
> org.eclipse.emf.workspace.AbstractEMFOperation.execute(_Abst ractEMFOperation.java:127_)
>
> at
> org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy.ex ecute(_ICommandProxy.java:64_)
>
>
>
>
>
> The line in question is
>
>
>
> __
>
> _List_ editParts = *new* ArrayList(viewAdapters.size());
>
>
>
> My viewAdapters are null...any idea why ?
>
>
>
>
>
> Thanks again.
>
>
>
>
>
>
>
>
> "Mohammed Mostafa" <mmostafa@ca.ibm.com <mailto:mmostafa@ca.ibm.com>>
> wrote in message news:ej02cs$oj2$1@utils.eclipse.org...
> > Alan;
> > You can do something like this
> > ArrangeRequest arrangeRequest =
> > new ArrangeRequest(RequestConstants.REQ_ARRANGE_DEFERRED);
> > request.setPartsToArrange(editParts);
> > Command arrangeCmd = containerEP.getCommand(request);
> >
> > then you can compose this arrange command with your zoom command
> >
> >
> >
> > Alan wrote:
> >> Hi all,
> >>
> >> I want to force my diagram to lay itself out when the zoom level
> changes as
> >> I rearrange them based on this.
> >> It will work if I choosed the Arrange All action on the GUI.
> >> So I was thinking if I could invoke this action programmatically
> then it
> >> would work.
> >> So anyone know how I can get a handle on the action ?
> >>
> >>
> >>
> >>

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