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Declaring parts being based on PartDescriptors in E4XMI [message #926051]

Fri, 28 September 2012 09:01

Ralph Schuster

Messages: 9
Registered: September 2012

Junior Member

Hi,

I have an application that needs to open three instances of the same part when starting up. I described the PartDescriptor but I can't get the parts being instantiated when the application comes up.

1) Is it possible to reference the part descriptor in the part description within e4xmi file? If so, how?

2) If not, at what stage I can use partService.create(descriptorId) to programmatically create the parts? I wasn't able to find a hook in the lifecycle where this is possible. Usually it throws an application saying that the application doesn't have any active window yet, e.g.

java.lang.IllegalStateException: Application does not have an active window
	at org.eclipse.e4.ui.internal.workbench.ApplicationPartServiceImpl.getActiveWindowService(ApplicationPartServiceImpl.java:36)
	at org.eclipse.e4.ui.internal.workbench.ApplicationPartServiceImpl.createPart(ApplicationPartServiceImpl.java:95)
	at myapp.rcp.ui.model.ApplicationLifecycleHook.addPart(ApplicationLifecycleHook.java:143)
	at myapp.rcp.ui.model.ApplicationLifecycleHook.configurePerspective(ApplicationLifecycleHook.java:109)
	at myapp.rcp.ui.model.ApplicationLifecycleHook.elementVisible(ApplicationLifecycleHook.java:78)
...

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Re: Declaring parts being based on PartDescriptors in E4XMI [message #928581 is a reply to message #926051]

Sun, 30 September 2012 19:37

Eclipse User

1) No
2) The exception happens because the construction happens too early (even before the window is created). You can listen for the window activation event like described in http://www.eclipse.org/forums/index.php/mv/msg/383895/922990/#msg_922990 or you can also listen for the window-bringToTop event (explore the UIEvents interface for more possibilities)

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Re: Declaring parts being based on PartDescriptors in E4XMI [message #928934 is a reply to message #926051]

Mon, 01 October 2012 04:43

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Why not directly adding the them in the base model when they should show
up in the initial state?

Tom

Am 28.09.12 02:01, schrieb Ralph Schuster:
> Hi,
>
> I have an application that needs to open three instances of the same
> part when starting up. I described the PartDescriptor but I can't get
> the parts being instantiated when the application comes up.
>
> 1) Is it possible to reference the part descriptor in the part
> description within e4xmi file? If so, how?
>
> 2) If not, at what stage I can use partService.create(descriptorId) to
> programmatically create the parts? I wasn't able to find a hook in the
> lifecycle where this is possible. Usually it throws an application
> saying that the application doesn't have any active window yet, e.g.
>
>
> java.lang.IllegalStateException: Application does not have an active window
> at
> org.eclipse.e4.ui.internal.workbench.ApplicationPartServiceImpl.getActiveWindowService(ApplicationPartServiceImpl.java:36)
>
> at
> org.eclipse.e4.ui.internal.workbench.ApplicationPartServiceImpl.createPart(ApplicationPartServiceImpl.java:95)
>
> at
> myapp.rcp.ui.model.ApplicationLifecycleHook.addPart(ApplicationLifecycleHook.java:143)
>
> at
> myapp.rcp.ui.model.ApplicationLifecycleHook.configurePerspective(ApplicationLifecycleHook.java:109)
>
> at
> myapp.rcp.ui.model.ApplicationLifecycleHook.elementVisible(ApplicationLifecycleHook.java:78)
>
> ..
>

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Re: Declaring parts being based on PartDescriptors in E4XMI [message #928977 is a reply to message #928934]

Mon, 01 October 2012 05:41

Ralph Schuster

Messages: 9
Registered: September 2012

Junior Member

Hi Tom,

because the parts will have menus and toolbars that all need then be repeated, and I still would need the part descriptor to open a new instance dynamically.

Of course this could be done in e4XMI, but the duplication of definition doesn't seem right at all to me.

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Re: Declaring parts being based on PartDescriptors in E4XMI [message #929776 is a reply to message #928581]

Mon, 01 October 2012 19:07

Ralph Schuster

Messages: 9
Registered: September 2012

Junior Member

Hi Sopot,

I tried subscribe to all Window events (TOPIC_ALL) but none of them arrived. No BRINGTOFRONT, ACTIVATE or any other. Occasionally I see HEIGHT and WIDTH events in the startup.

Regards

Ralph

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Re: Declaring parts being based on PartDescriptors in E4XMI [message #929842 is a reply to message #928977]

Mon, 01 October 2012 20:31

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Ok - that's what snippets are good for! Add your template there and add
a processor which clones the snippet to your final destination (IIRC the
model service has support for that) ;-)

Tom

Am 30.09.12 22:41, schrieb Ralph Schuster:
> Hi Tom,
>
> because the parts will have menus and toolbars that all need then be
> repeated, and I still would need the part descriptor to open a new
> instance dynamically.
> Of course this could be done in e4XMI, but the duplication of definition
> doesn't seem right at all to me.
>
>

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