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how to make a ComboView not selectable [message #1849975]

Thu, 10 February 2022 06:34

Olivier BISSON

Messages: 6
Registered: February 2022

Junior Member

Hello,
I'm discovering EMF Parsley. In my test, in need to know how to make a comboView not selectable (unmodifiable)

In the photo attached, you will find expected.
The first field (text field) is already unmodifiable and i need to do the same with the 2nd field (comboView).

Below the code for the 1st field

Instance: attribute -> { val t = createText("") t.editable = false t.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WIDGET_LIGHT_SHADOW)) return t }

Someone has an idea ?
Thanks
Oliver

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Re: how to make a ComboView not selectable [message #1849976 is a reply to message #1849975]

Thu, 10 February 2022 06:52

Lorenzo Bettini

Messages: 1812
Registered: July 2009
Location: Firenze, Italy

Senior Member

Hi Olivier

I'm not sure I understand your question... you simply have to use the Java API of the combo view, just like you did with the text edit. Parsley simply relies on the Java API of the SWT and Jface controls.

HOME: http://www.lorenzobettini.it
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Re: how to make a ComboView not selectable [message #1849980 is a reply to message #1849976]

Thu, 10 February 2022 08:29

Olivier BISSON

Messages: 6
Registered: February 2022

Junior Member

Hello Lorenzo,

first thanks for your reply.

In fact, here is what i have aleady tried :

Instance : attribute -> { val t = createComboViewer().combo t.enabled = false t.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WIDGET_LIGHT_SHADOW)) return t }
target observeSelection()

-> field combo is not selectable but value is empty.
console stacktrace : "cannot be cast to java.lang.String"

Instance : attribute -> { val t = new Combo(parent, SWT.READ_ONLY) t.enabled = false t.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WIDGET_LIGHT_SHADOW)) return t }
target observeSelection()

-> field combo is not selectable but value is empty.
console stacktrace : "cannot be cast to java.lang.String"

Instance: attribute -> { val t = createComboViewer().combo t.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WIDGET_LIGHT_SHADOW)) return t }
target observeSelection()

-> field combo is not selectable but value is empty.
console stacktrace : "cannot be cast to java.lang.String"

I m not sure how to bind ?

Thanks for your help
Oliver

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Re: how to make a ComboView not selectable [message #1849981 is a reply to message #1849980]

Thu, 10 February 2022 08:50

Lorenzo Bettini

Messages: 1812
Registered: July 2009
Location: Firenze, Italy

Senior Member

You may want to first understand how to do that outside of Parsley: first, try to learn how to perform databinding of a combo and then how to make it disabled. Then you can add the corresponding code to Parsley. I'm afraid I don't know much about databinding for this specific case.
You may also want to inspect how Parsley internally performs databinding for a combo (i.e., how it does that by default) or how EMF does that.

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