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Filemenu popup within GMF [message #1007178]

Mon, 04 February 2013 19:00

Phil H

Messages: 267
Registered: November 2012

Senior Member

Hello,

I've created a GMF Editor which works fine so far.
What I want to do now is implementing a popup which opens when an user clicks on a node. This popup should realise some kind of a file manager, like the attached immage. The user should be able to choose a file somewhere from the drive and then the file path should be stored as an String attribute in the gmf model.
Hope you understand what I mean. Is there any chance to realise something like that? Maybe eclipse provide some support.

Attachment: file_manager.JPG
(Size: 59.05KB, Downloaded 318 times)

[Updated on: Tue, 05 February 2013 10:45]

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Re: Filemneu popup within GMF [message #1007231 is a reply to message #1007178]

Tue, 05 February 2013 07:14

Daniel König

Messages: 24
Registered: November 2012

Junior Member

Hello Phil

You may try it with an OpenEditPolicy (http://publib.boulder.ibm.com/infocenter/rsahelp/v7r0m0/index.jsp?topic=/org.eclipse.gmf.doc/reference/api/runtime/org/eclipse/gmf/runtime/diagram/ui/editpolicies/OpenEditPolicy.html) and then open a FileDialog (http://www.vogella.com/articles/EclipseDialogs/article.html#tutorialswt).

I think this could work, but no guarantee Wink

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Re: Filemenu popup within GMF [message #1007301 is a reply to message #1007178]

Tue, 05 February 2013 12:53

Phil H

Messages: 267
Registered: November 2012

Senior Member

Thx so far! I searched a lot, but I couldn't find a good tutorial which explains the use of OpenEditPolicy from scratch. I've no idea where to implement my own OpenEditPolicy in this whole mess of generated classes. Can someone give me a hint? Is it possible to realise this outside the generated code, since I using Eugenia for generating the code?

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Re: Filemenu popup within GMF [message #1007397 is a reply to message #1007301]

Tue, 05 February 2013 17:51

Phil H

Messages: 267
Registered: November 2012

Senior Member

I'm now able to open a filedailog and read out the filepath. Furthermore I can acces my Element. But when I try to assign the filepath to an attribute, i get the following error:

java.lang.IllegalStateException: Cannot modify resource set without a write transaction

I already read about using an ICommandProxy to overcome this, bute I've no Idea how to use this in my case. Any suggestions?

public class MyOpenEditPolicy extends OpenEditPolicy {

	protected Command getOpenCommand(final Request request) {

		return new Command() {
			public void execute() {
				EditPart targetEditPart = getTargetEditPart(request);
				if (targetEditPart instanceof IGraphicalEditPart) {
					IGraphicalEditPart graphicalEditPart = (IGraphicalEditPart) targetEditPart;
					if (graphicalEditPart.getModel() instanceof View) {
						View view = (View) graphicalEditPart.getModel();
						if (view.getElement() instanceof Feature) {
							Feature feature = (Feature) view.getElement();
							Shell shell = Display.getCurrent().getActiveShell();
							FileDialog fileDialog = new FileDialog(shell);
							fileDialog.setText("Select an EFVM File");
							fileDialog
									.setFilterExtensions(new String[] { "*.efvm" });
							fileDialog
									.setFilterNames(new String[] { "*.efvm" });
							if (fileDialog.open() != null) {
								String selected = fileDialog.open();
								System.out.println("file: "
										+ feature.getFilepath());
								// feature.setFilepath(selected);
							}
						}
					}
				}

			}
		};
	}
}

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Re: Filemenu popup within GMF [message #1007541 is a reply to message #1007397]

Wed, 06 February 2013 11:10

Ralph Gerbig

Messages: 702
Registered: November 2009

Senior Member

Hi,

all you need to do is get the EditDomain from the editpart then get its command stack and execute a EMF SetCommand on that stack. You can use SetCommand.Create(...) to create a new SetCommand.

Ralph

[Updated on: Wed, 06 February 2013 11:12]

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Re: Filemenu popup within GMF [message #1007559 is a reply to message #1007541]

Wed, 06 February 2013 13:29

Daniel König

Messages: 24
Registered: November 2012

Junior Member

Here is an example:

// SetRequest and Command
int x = 4711;
EObject element = // your element with the attribute to set

TransactionalEditingDomain editingDomain = this.getEditingDomain();
SetRequest setRequestX = new SetRequest(editingDomain, element, XYZPackage.eINSTANCE.getYOURATTRIBUTE(), x);
SetValueCommand setX = new SetValueCommand(setRequestX);

try {
	setX.execute(null, null);
} catch (ExecutionException e) {
	e.printStackTrace();
}

I hope it also works for you Wink

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Re: Filemenu popup within GMF [message #1007586 is a reply to message #1007178]

Wed, 06 February 2013 15:19

Phil H

Messages: 267
Registered: November 2012

Senior Member

Big thx Daniel and Ralph, it's working now like ecpected Smile

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Re: Filemenu popup within GMF [message #1036758 is a reply to message #1007586]

Mon, 08 April 2013 19:22

Simon Zutterman

Messages: 28
Registered: October 2012

Junior Member

Hey Phil,

I'd also really like to implement something like this in my editor, but even with the previous posts, I don't have a clue how.

As I would like it, I would have a node with a normal feature name label, but in the metamodel with a second attribute (filepath), if you double click on the node in the editor, you get the file manager popup, select a file on your drive and the filepath would be stored in the attribute, displayed in the properties view.

It would be a massive help and I would be eternally grateful if you could give me a more detailed explanation on how to do this! Or if you were willing, post me your project files so i can sort it out myself?

regards,

Simon

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Re: Filemenu popup within GMF [message #1052645 is a reply to message #1007178]

Tue, 30 April 2013 10:47

Phil H

Messages: 267
Registered: November 2012

Senior Member

Hi Simon,

sry I just noticed your post now.

In your diagram edit.part package you should have a generated class for your node (called NameOfYourNodeEditPart). In your method createDefaultEditPolicies() you have to install your own created EditPolicy. In my case I just added:

installEditPolicy(EditPolicyRoles.OPEN_ROLE,new FilePathOpenEditPolicy());

The mentioned policy class looks like this:

public class FilePathOpenEditPolicy extends OpenEditPolicy {

	protected Command getOpenCommand(final Request request) {

		return new Command() {
			public void execute() {
				EditPart targetEditPart = getTargetEditPart(request);
				if (targetEditPart instanceof IGraphicalEditPart) {
					IGraphicalEditPart graphicalEditPart = (IGraphicalEditPart) targetEditPart;
					TransactionalEditingDomain editingDomain = graphicalEditPart.getEditingDomain();
					if (graphicalEditPart.getModel() instanceof View) {
						View view = (View) graphicalEditPart.getModel();
						if (view.getElement() instanceof Feature) {
							Feature feature = (Feature) view.getElement();
							Shell shell = Display.getCurrent().getActiveShell();
							FileDialog fileDialog = new FileDialog(shell);
							fileDialog.setText("Select an EFVM File");
							fileDialog.setFilterExtensions(new String[] { "*.efvm" });
							fileDialog.setFilterNames(new String[] { "*.efvm" });
							try {
								String path = fileDialog.open();
								if (!path.isEmpty()) {
									SetRequest setRequestX = new SetRequest(editingDomain, feature,PldPackage.eINSTANCE.getFeature_FilePath(),path);
									SetValueCommand setX = new SetValueCommand(setRequestX);
									setX.execute(null, null);
								}
							} catch (Exception e) {
								MessageDialog.openWarning(shell, "Warning",
										"No efvm file has been selected!");
								// e.printStackTrace();
							}
						}
					}
				}
			}
		};
	}
}

Hope this helps.

Cheers,
Phil

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