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open an object with an editor [message #318253]

Tue, 24 July 2007 02:55

Eclipse User

Originally posted by: automatic.javalobby.org

If I got an object suppose with two int values. Is it poosible to open it with an editor? I have only found examples where it's files that opens with editors.

ISelection sel = viewer.getSeclection();
Object obj = ((IStructuredSelection)selection).getFirstElement();
...
openEditorOnObject(obj) //??? this don't exist

Someone have any ide?

Re: open an object with an editor [message #318267 is a reply to message #318253]

Tue, 24 July 2007 06:57

Eclipse User

karl wrote:
> If I got an object suppose with two int values. Is it poosible to open it with an editor? I have only found examples where it's files that opens with editors.

The framework would need to know what editor to open it with / what kind
of input the editor should be taking in. If I passed in an ArrayList to
the Eclipes Platform, how would it know how to display this? The Eclipse
Platform is great but it's not psychic.

Regards,
Rem

Re: open an object with an editor [message #318276 is a reply to message #318253]

Tue, 24 July 2007 09:29

Eclipse User

Karl, you would need to create an IEditorInput that could tell your
editor how to open on the selected value.

Then you just use IWorkbenchPage#openEditor(*). It takes the editor ID
and the IEditorInput.

Later,
PW

Re: open an object with an editor [message #318297 is a reply to message #318276]

Wed, 25 July 2007 02:11

Eclipse User

Originally posted by: automatic.javalobby.org

Thanks a lot. I made a class that implements IEditorInput and that works fine.

Another thing now is that if I open the same object two times it's open an new editor instead of setting focus on the editor that already exists.

Re: open an object with an editor [message #318320 is a reply to message #318297]

Wed, 25 July 2007 14:12

Eclipse User

karl wrote:
> Thanks a lot. I made a class that implements IEditorInput and that works fine.
>
> Another thing now is that if I open the same object two times it's open an new editor instead of setting focus on the editor that already exists.

Does your editor input override equals(*) and hashCode()?

PW

Re: open an object with an editor [message #318343 is a reply to message #318320]

Thu, 26 July 2007 02:23

Eclipse User

Originally posted by: automatic.javalobby.org

Yes my editor input is override equals(*) and hashCode. I let eclipse generate the code:

@Override
public int hashCode(){
final int prime = 31;
int result = 1;
result = prime * result + ((viewer == null) ? 0: viewer.hasCode());
return result;
}

@Override
public boolean equals(Object obj){
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
final MyClass other = (MyClass) obj;
if(viewer == null){
if(other.viewer != null)
return false;
else if (viewer.equals(other.viewer))
return false;
return true;
}
}
return false;
return true;
}

// in configureGraphivalViewer()
viewer = getGraphicalViewer();

Re: open an object with an editor [message #318469 is a reply to message #318343]

Mon, 30 July 2007 12:11

Eclipse User

karl wrote:
> Yes my editor input is override equals(*) and hashCode. I let eclipse generate the code:

And do both of these methods generate the same values for the 2 "equal"
editor inputs? I'm just wondering what viewer is doing there?

Later,
PW

Re: open an object with an editor [message #318737 is a reply to message #318469]

Fri, 03 August 2007 07:24

Eclipse User

Originally posted by: automatic.javalobby.org

nope they don't generate the same value. what should I use instead of viewer?

Re: open an object with an editor [message #318816 is a reply to message #318737]

Tue, 07 August 2007 09:28

Eclipse User

karl wrote:
> nope they don't generate the same value. what should I use instead of viewer?

just use whatever it takes for the 2 IEditorInputs to be equal ...
editor inputs are abstract representations of an editor input ... like
java.io.File or an string path or a string key.

For example if your IEditorInput was just a string key, you would check
that those members are equal.

Later,
PW

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