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e4 custom renderer not working [message #851439]

Fri, 20 April 2012 21:01

ishk gunathilake
Messages: 27
Registered: April 2012

Junior Member

hi
i change the default renderer as this

   <property
               name="rendererFactoryUri"
               value="platform:/plugin/com.rcp.myproject.renderer/com.rcp.myproject.renderer.MyRendererFactory">
         </property>

and i created a renderer as this

public class NewElementRenderer extends SWTPartRenderer {
	public Object createWidget(final MUIElement element, Object parent) {
          Label label = new Label((Composite)parent, SWT.NONE);
          label.setText("test widget");
          return label;
       }
   }

and my rendererFactory class is as follows

public class MyRendererFactory extends WorkbenchRendererFactory {

	protected NewElementRenderer newElementRenderer;

	
	@Override
	   public AbstractPartRenderer getRenderer(MUIElement uiElement, Object parent) {
		
		if(uiElement instanceof Label){
            if(newElementRenderer == null) {
                newElementRenderer = new NewElementRenderer();
                initRenderer(newElementRenderer);
            }
            return newElementRenderer;
        }
        return super.getRenderer(uiElement, parent);
    }

but what when i run this, i can only see an empty shell without that label.plz help me on this.

regards
}

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Re: e4 custom renderer not working [message #851732 is a reply to message #851439]

Sat, 21 April 2012 04:29

Thomas Schindl
Messages: 4462
Registered: July 2009

Senior Member

a) the URI has to use the new bundleclass://
b) the renderer only deals with elments from the workbench model and
not very SWT-Widgets so your code makes no sense at all

Tom

Am 21.04.12 03:01, schrieb ishara gunathilake:
> hi
> i change the default renderer as this
>
> <property
> name="rendererFactoryUri"
>
> value="platform:/plugin/com.rcp.myproject.renderer/com.rcp.myproject.renderer.MyRendererFactory">
>
> </property>
>
> and i created a renderer as this
>
> public class NewElementRenderer extends SWTPartRenderer {
> public Object createWidget(final MUIElement element, Object parent) {
> Label label = new Label((Composite)parent, SWT.NONE);
> label.setText("test widget");
> return label;
> }
> }
>
> and my rendererFactory class is as follows
>
> public class MyRendererFactory extends WorkbenchRendererFactory {
>
> protected NewElementRenderer newElementRenderer;
>
>
> @Override
> public AbstractPartRenderer getRenderer(MUIElement uiElement,
> Object parent) {
>
> if(uiElement instanceof Label){
> if(newElementRenderer == null) {
> newElementRenderer = new NewElementRenderer();
> initRenderer(newElementRenderer);
> }
> return newElementRenderer;
> }
> return super.getRenderer(uiElement, parent);
> }
>
>
>
> but what when i run this, i can only see an empty shell without that
> label.plz help me on this.
>
> regards
> }
>
>

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Re: e4 custom renderer not working [message #851815 is a reply to message #851732]

Sat, 21 April 2012 06:41

ishk gunathilake
Messages: 27
Registered: April 2012

Junior Member

hi tom,
thanks for your reply.i am new to this. what do you mean by new bundleclass. previously my project ran under eclipse 3.2 platform.and currently i upgraded it to 4.1 to re skin the UI with css.but some of the 3.2 api calls are not working with 4.1 eclipse(WorkbenchWindowAdvisor.createWindowContents(Shell)).so all the UI components are disabled from my app UI because of this reason.. so im trying to re implement the code. Can you please give me some advice regarding this context.I appreciate your advice.

regards

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Re: e4 custom renderer not working [message #851843 is a reply to message #851815]

Sat, 21 April 2012 07:15

Thomas Schindl
Messages: 4462
Registered: July 2009

Senior Member

a) Please use 4.2 builds (M6 or even better nightly builds)

b) We changed the URL format in 4.2 to bundleclass:// instead of
platform:/

c) You are correct with the createWindowContents which somehow part of
the old presentation API we are unable to support.

=> You want to handle the MTrimmedWindow-model type if the current
WBWRenderer doesn't suite your need

What did you do in your createWindowContents-method? Maybe you can solve
your problem in other ways in Eclipse 4.

Tom

Am 21.04.12 12:41, schrieb ishara gunathilake:
> hi tom,
> thanks for your reply.i am new to this. what do you mean by new
> bundleclass. previously my project ran under eclipse 3.2 platform.and
> currently i upgraded it to 4.1 to re skin the UI with css.but some of
> the 3.2 api calls are not working with 4.1
> eclipse(WorkbenchWindowAdvisor.createWindowContents(Shell)).so all the
> UI components are disabled from my app UI because of this reason.. so im
> trying to re implement the code. Can you please give me some advice
> regarding this context.I appreciate your advice.
>
> regards

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Re: e4 custom renderer not working [message #851859 is a reply to message #851843]

Sat, 21 April 2012 07:46

ishk gunathilake
Messages: 27
Registered: April 2012

Junior Member

this is the code which i use to create the window content. i set the menu bar and i create header footer and center using the MainPageComposite class
which construct the page components using createComposite method.
@Override
public void createWindowContents(final Shell shell)
{
IWorkbenchWindowConfigurer configurer = getWindowConfigurer();
final Menu menu = configurer.createMenuBar();
shell.setMenuBar(menu);
shell.setLayout(new FillLayout());
mainPageComposite = new MainPageComposite(shell, SWT.NONE, this);
}

im getting empty workbench as this is not called by eclipse 4.1. currently i m trying to create renderers for all of these components.but still i dont have a clear picture of how to solve this using custom renderers. i appreciate your suggestions.

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Re: e4 custom renderer not working [message #851870 is a reply to message #851859]

Sat, 21 April 2012 07:59

Thomas Schindl
Messages: 4462
Registered: July 2009

Senior Member

But why are you doing this your own? Why doesn't the default
implementation suite your needs? And please upgrade to 4.2 - we can't
give your support for 4.1.

Tom

Am 21.04.12 13:46, schrieb ishara gunathilake:
> this is the code which i use to create the window content. i set the
> menu bar and i create header footer and center using the
> MainPageComposite class
> which construct the page components using createComposite method.
> @Override
> public void createWindowContents(final Shell shell)
> {
> IWorkbenchWindowConfigurer configurer = getWindowConfigurer();
> final Menu menu = configurer.createMenuBar();
> shell.setMenuBar(menu);
> shell.setLayout(new FillLayout());
> mainPageComposite = new MainPageComposite(shell, SWT.NONE, this);
> }
>
> im getting empty workbench as this is not called by eclipse 4.1.
> currently i m trying to create renderers for all of these components.but
> still i dont have a clear picture of how to solve this using custom
> renderers. i appreciate your suggestions.

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Re: e4 custom renderer not working [message #851882 is a reply to message #851870]

Sat, 21 April 2012 08:15

ishk gunathilake
Messages: 27
Registered: April 2012

Junior Member

this is a large project which consist of more than 20 plugins and more than 10 UIs.I did this to enable e4 css functionality so that i can change the UI very quickly. this is the main reason for upgrading 3.2 to 4.1. If i upgrade this to 4.2 what are the benefits i can get, coz i have to give another effort to upgrade this to 4.2.Why you are telling me to upgrade it to 4.2, does that mean 4.1 is not a stable release?

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Re: e4 custom renderer not working [message #851901 is a reply to message #851882]

Sat, 21 April 2012 08:36

Thomas Schindl
Messages: 4462
Registered: July 2009

Senior Member

Am 21.04.12 14:15, schrieb ishara gunathilake:
> this is a large project which consist of more than 20 plugins and more
> than 10 UIs.I did this to enable e4 css functionality so that i can
> change the UI very quickly. this is the main reason for upgrading 3.2 to
> 4.1. If i upgrade this to 4.2 what are the benefits i can get, coz i
> have to give another effort to upgrade this to 4.2.Why you are telling
> me to upgrade it to 4.2, does that mean 4.1 is not a stable release?

There are many things that have been fixed in 4.2 most of them in the so
called compat layer which makes old plugins run on the new platform.

So even if you manage to get things up you'll notice many things who are
not working as expected.

The question was more what special things are you doing in
createWindowContents? Why can't you simply life with the default
implementation?

Tom

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Re: e4 custom renderer not working [message #851979 is a reply to message #851901]

Sat, 21 April 2012 10:38

ishk gunathilake
Messages: 27
Registered: April 2012

Junior Member

the application UI consist of default workbench components with custom header(cosist of product banner and buttons other windows) and a side bar which consist of several quick search components).here the problem is the new reskin ui consist of different new styles(as an example buttons with rounded edges, different colors). so it may take lot of effort if i am going to do this with default implementation.I thought e4 tooling will be a fast solution to my project.
if i upgrade this to 4.2, can i assure the old methods (such as WorkbenchWindowAdvisor.createWindowContents(Shell))will work with the 4.2 ?

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Re: e4 custom renderer not working [message #852014 is a reply to message #851979]

Sat, 21 April 2012 11:22

Sopot Cela
Messages: 447
Registered: December 2010

Senior Member

Ishara,
Regardless if it's the right thing to do, rewriting the render is not a trivial thing. To do that you need to have understood the eclipse emf model that represents the applicaion at runtime. This model is then 'translated' into widgets by the renderer. The line

If uiElement instanceof Label

will never return true because uiElement is the model object that is supposed to be translated into a widget through the renderer, not the widget itself.

For the 4.1 point, migrating from 4.1 to 4.2 is not the same effort as migrating from 3.2 to 4.1. In the latter case the conversion introduces the compatibility layer which makes your application believe it is still running on 3.x while it is on 4.x. When you go from 4.1 to the nightly builds you get a much better compatibility layer without any effort.

As to whether implementing your own renderer or not i would suggest you take a look at what the the main concepts introduced in e4 through various online resources and then if css isn't enough for your needs go and extend the renderers but it would be difficult to do so whithout deep knowledge of at least the modeled workbench.

Good luck.

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Re: e4 custom renderer not working [message #852202 is a reply to message #851979]

Sat, 21 April 2012 15:35

Thomas Schindl
Messages: 4462
Registered: July 2009

Senior Member

Am 21.04.12 16:38, schrieb ishara gunathilake:
> the application UI consist of default workbench components with custom
> header(cosist of product banner and buttons other windows) and a side
> bar which consist of several quick search components).here the problem
> is the new reskin ui consist of different new styles(as an example
> buttons with rounded edges, different colors). so it may take lot of
> effort if i am going to do this with default implementation.I thought e4
> tooling will be a fast solution to my project.
> if i upgrade this to 4.2, can i assure the old methods (such as
> WorkbenchWindowAdvisor.createWindowContents(Shell))will work with the 4.2 ?

No WorkbenchWindowAdvisor.createWindowContents will never be called
because it is part of the Presentation API and we said from Day 1 that
this is the *only* thing we are NOT going to support in 4.x.

Tom

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Re: e4 custom renderer not working [message #856539 is a reply to message #852202]

Wed, 25 April 2012 15:16

ishk gunathilake
Messages: 27
Registered: April 2012

Junior Member

hi,
I completed the platform change successfully. But still getting the empty workbench. As you(tom) mentioned, some of the functions which weren't run on 4.1 platform are enabled as a result of platform change to 4.2.Would like to know how do i resolve the WorkbenchWindowAdvisor.createWindowContents(Shell)) problem in 4.2 platform and enable the hidden components.do i have to written renderers? Please give your suggestions. I used Eclipse 4.2.0 Nightly Build: N20120421-2021 for this platform change.

regards

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Re: e4 custom renderer not working [message #857202 is a reply to message #856539]

Thu, 26 April 2012 06:35

Brian de Alwis
Messages: 242
Registered: July 2009

Senior Member

Ishara, the E4 CSS support should work in 3.7. Raise a bug if it doesn't.

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Re: e4 custom renderer not working [message #858096 is a reply to message #857202]

Thu, 26 April 2012 22:06

ishk gunathilake
Messages: 27
Registered: April 2012

Junior Member

hi brian,
but i dont think i can do this using the limited api provided by 3.x. Im gonna change the UI as IBM-Lotus Symphony theming.I want to find a way how
can be done this using 4.2 api. Now I have my project runs on 4.2 platform but under the 3.x overridden api calls.I want to change these api calls in a way which they will compatible with the 4.2 api.

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