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Cannot add an item to the toolbar programmatically [message #1137376]

Mon, 14 October 2013 08:51

Eclipse User

Hi,

I'm trying to create a toolbar that will be filled in programmatically. Unfortunately I cannot add a new item to the toolbar due to ClassCastException. I try to add a button to the toolbar in the following way:

String commandId = "example.command";
MToolBar toolbar = ...

MHandledToolItem element = eModelService.createModelElement(MHandledToolItem.class);
element.setElementId("my.new.item.id");
element.setLabel("New item");

ParameterizedCommand wbCommand = getCommand(commandId);
element.setWbCommand(wbCommand);

toolbar.getChildren().add(element);

The last line throws the ClassCastException exception:

java.lang.ClassCastException: org.eclipse.fx.ui.workbench.renderers.fx.DefToolItemRenderer$ToolItemImpl cannot be cast to org.eclipse.fx.ui.workbench.renderers.base.widget.WLayoutedWidget
	at org.eclipse.fx.ui.workbench.renderers.base.BaseToolBarRenderer.childRendered(BaseToolBarRenderer.java:103)
	at org.eclipse.fx.ui.workbench.renderers.base.BaseToolBarRenderer.childRendered(BaseToolBarRenderer.java:1)
	at org.eclipse.fx.ui.workbench.fx.PartRenderingEngine.createGui(PartRenderingEngine.java:161)
	at org.eclipse.fx.ui.workbench.fx.PartRenderingEngine.createGui(PartRenderingEngine.java:251)
	at org.eclipse.fx.ui.workbench.renderers.base.BaseRenderer.engineCreateWidget(BaseRenderer.java:307)
	at org.eclipse.fx.ui.workbench.renderers.base.BaseToolBarRenderer.handleChildrenAddition(BaseToolBarRenderer.java:135)
	at org.eclipse.fx.ui.workbench.renderers.base.BaseToolBarRenderer.handleChildrenAddition(BaseToolBarRenderer.java:1)
	at org.eclipse.fx.ui.workbench.renderers.base.EventProcessor$1.handleEvent(EventProcessor.java:41)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
	at org.eclipse.fx.ui.workbench.fx.E4Application$1.syncExec(E4Application.java:156)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)

I also encountered one more issue with the toolbar. After starting my application all toolbar buttons(that I declared in the Application.e4xmi) are disabled. I checked your demo application (e4 Media Application) and toolbar is disabled as well.

Re: Cannot add an item to the toolbar programmatically [message #1137566 is a reply to message #1137376]

Mon, 14 October 2013 11:31

Eclipse User

On 14.10.13 17:05, Pawel Zalejko wrote:
> Hi,
>
> I'm trying to create a toolbar that will be filled in programmatically.
> Unfortunately I cannot add a new item to the toolbar due to
> ClassCastException. I try to add a button to the toolbar in the
> following way:
>
>
> String commandId = "example.command";
> MToolBar toolbar = ...
>
> MHandledToolItem element =
> eModelService.createModelElement(MHandledToolItem.class);
> element.setElementId("my.new.item.id");
> element.setLabel("New item");
>
> ParameterizedCommand wbCommand = getCommand(commandId);
> element.setWbCommand(wbCommand);
>
> toolbar.getChildren().add(element);
>
>
> The last line throws the ClassCastException exception:
> java.lang.ClassCastException:
> org.eclipse.fx.ui.workbench.renderers.fx.DefToolItemRenderer$ToolItemImpl cannot
> be cast to
> org.eclipse.fx.ui.workbench.renderers.base.widget.WLayoutedWidget
> at
> org.eclipse.fx.ui.workbench.renderers.base.BaseToolBarRenderer.childRendered(BaseToolBarRenderer.java:103)
>
> at
> org.eclipse.fx.ui.workbench.renderers.base.BaseToolBarRenderer.childRendered(BaseToolBarRenderer.java:1)
>
> at
> org.eclipse.fx.ui.workbench.fx.PartRenderingEngine.createGui(PartRenderingEngine.java:161)
>
> at
> org.eclipse.fx.ui.workbench.fx.PartRenderingEngine.createGui(PartRenderingEngine.java:251)
>
> at
> org.eclipse.fx.ui.workbench.renderers.base.BaseRenderer.engineCreateWidget(BaseRenderer.java:307)
>
> at
> org.eclipse.fx.ui.workbench.renderers.base.BaseToolBarRenderer.handleChildrenAddition(BaseToolBarRenderer.java:135)
>
> at
> org.eclipse.fx.ui.workbench.renderers.base.BaseToolBarRenderer.handleChildrenAddition(BaseToolBarRenderer.java:1)
>
> at
> org.eclipse.fx.ui.workbench.renderers.base.EventProcessor$1.handleEvent(EventProcessor.java:41)
>
> at
> org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41)
>
> at
> org.eclipse.fx.ui.workbench.fx.E4Application$1.syncExec(E4Application.java:156)
>
> at
> org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
>
> at
> org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197)
>
> at
> org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
>
> at
> org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
>
> at
> org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
>

Filed as https://bugs.eclipse.org/bugs/show_bug.cgi?id=419373 and fixed
in master.

>
>
> I also encountered one more issue with the toolbar. After starting my
> application all toolbar buttons(that I declared in the
> Application.e4xmi) are disabled. I checked your demo application (e4
> Media Application) and toolbar is disabled as well.
>

Filed as https://bugs.eclipse.org/bugs/show_bug.cgi?id=419375 and fixed
in master.

It looks like your Application.e4xmi is missing the
HandlerProcessingAddon. How did you bootstrap the the e4 application?

You can add it yourself next to the current addons:

<addons xmi:id="_CsUUmjTlEeOp9YyhHHv9bw"
elementId="org.eclipse.e4.ui.workbench.addons.HandlerProcessingAddon"
contributionURI="bundleclass://org.eclipse.e4.ui.workbench/org.eclipse.e4.ui.internal.workbench.addons.HandlerProcessingAddon"/>

Tom

Re: Cannot add an item to the toolbar programmatically [message #1138497 is a reply to message #1137566]

Tue, 15 October 2013 01:56

Eclipse User

Hi Tom,

I added the HandlerProcessingAddon and now the toolbar works like a charm. All buttons are enabled Smile

Thanks!

Re: Cannot add an item to the toolbar programmatically [message #1138870 is a reply to message #1137376]

Tue, 15 October 2013 07:31

Eclipse User

Hi Tom,

It looks that the problem with disabled buttons is not resolved. All buttons added to the toolbar programmatically are disabled(those buttons that are declared in the Application.e4xmi work fine).

String commandId = "example.command";
MToolBar toolbar = ...

MHandledToolItem element = eModelService.createModelElement(MHandledToolItem.class);
element.setElementId("my.new.item.id");
element.setLabel("New item");

ParameterizedCommand wbCommand = getCommand(commandId);
element.setWbCommand(wbCommand);

// Set true in order to enable the button.
element.setEnabled(true);
element.setVisible(true);
element.setToBeRendered(true);

toolbar.getChildren().add(element);

Even when I set following flags on "true" the problem is present:

element.setEnabled(true);
element.setVisible(true);
element.setToBeRendered(true);

Re: Cannot add an item to the toolbar programmatically [message #1138897 is a reply to message #1138870]

Tue, 15 October 2013 07:54

Eclipse User

Can you please file a bug please and post the bug id to this thread.

Tom

On 15.10.13 13:31, Pawel Zalejko wrote:
> Hi Tom,
>
> It looks that the problem with disabled buttons is not resolved. All
> buttons added to the toolbar programmatically are disabled(those buttons
> that are declared in the Application.e4xmi work fine).
>
>
> String commandId = "example.command";
> MToolBar toolbar = ...
>
> MHandledToolItem element =
> eModelService.createModelElement(MHandledToolItem.class);
> element.setElementId("my.new.item.id");
> element.setLabel("New item");
>
> ParameterizedCommand wbCommand = getCommand(commandId);
> element.setWbCommand(wbCommand);
>
> // Set true in order to enable the button.
> element.setEnabled(true);
> element.setVisible(true);
> element.setToBeRendered(true);
>
> toolbar.getChildren().add(element);
>
>
> Even when I set following flags on "true" the problem is present:
>
>
> element.setEnabled(true);
> element.setVisible(true);
> element.setToBeRendered(true);
>

Re: Cannot add an item to the toolbar programmatically [message #1138913 is a reply to message #1138897]

Tue, 15 October 2013 08:05

Eclipse User

Filed as https://bugs.eclipse.org/bugs/show_bug.cgi?id=419443.

Pawel

[Updated on: Tue, 15 October 2013 08:06] by Moderator

Re: Cannot add an item to the toolbar programmatically [message #1139044 is a reply to message #1137376]

Tue, 15 October 2013 09:53

Eclipse User

I have also one question regarding the toolbar. Is it possible to make that toolbar's width will be the same as a window's width (set e.g. maxWidth="Infinity")?

[Updated on: Tue, 15 October 2013 09:54] by Moderator

Re: Cannot add an item to the toolbar programmatically [message #1139072 is a reply to message #1139044]

Tue, 15 October 2013 10:15

Eclipse User

http://wiki.eclipse.org/Efxclipse/Runtime/e4#MTrimElement

Tom

On 15.10.13 15:53, Pawel Zalejko wrote:
> I have also one question regarding the toolbar. Is it possible to make
> that toolbar's width will be the same as a window's width (set e.g.
> maxHeight="Infinity")?

Re: Cannot add an item to the toolbar programmatically [message #1139161 is a reply to message #1138913]

Tue, 15 October 2013 11:28

Eclipse User

Your code is wrong you need assign an MCommand

Tom

On 15.10.13 14:05, Pawel Zalejko wrote:
> Filled as https://bugs.eclipse.org/bugs/show_bug.cgi?id=419443.
>
> Pawel

Re: Cannot add an item to the toolbar programmatically [message #1140218 is a reply to message #1137376]

Wed, 16 October 2013 03:54

Eclipse User

Hi Tom,

You are right. It should be MCommand.

Many thanks for your efforts.

Pawel

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