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What class/interface do I need to extend/implement to create a custom Sapphire property editor? [message #1480617]

Thu, 20 November 2014 05:23

Eclipse User

Hello!

I want to create a custom property editor for an integer field (text box plus slider).

What class do I need to extend (what interface should I implement) in order to do that (allow the user to enter property values both via the text field and using the slider) ?

Thanks in advance

Dmitri

Re: What class/interface do I need to extend/implement to create a custom Sapphire property editor? [message #1481178 is a reply to message #1480617]

Thu, 20 November 2014 15:43

Eclipse User

To create a custom property editor for an integer property, you'd extend from ValuePropertyEditorPresentation. Note that the existing, ScalePropertyEditorPresentation may suit your requirements.

<property-editor>
  <property>MyInteger</property>
  <hint>
    <name>factory</name>
    <value>org.eclipse.sapphire.ui.forms.swt.internal.ScalePropertyEditorPresentation$Factory</value>
  </hint>
</property-editor>

Re: What class/interface do I need to extend/implement to create a custom Sapphire property editor? [message #1481832 is a reply to message #1481178]

Fri, 21 November 2014 04:00

Eclipse User

Hello Konstantin!

Thanks for your answer.

I tried

    <property-editor>
        <scale-vertically>false</scale-vertically>
        <property>PropertyName</property>
        <show-label>true</show-label>
        <hint>
			<name>factory</name>
			<value>org.eclipse.sapphire.ui.forms.swt.internal.ScalePropertyEditorPresentation.Factory</value>
		</hint>
    </property-editor>

and

    <property-editor>
        <scale-vertically>false</scale-vertically>
        <property>PropertyName</property>
        <show-label>true</show-label>
        <hint>
			<name>factory</name>
			<value>org.eclipse.sapphire.ui.forms.swt.internal.ScalePropertyEditorPresentation$Factory</value>
		</hint>
    </property-editor>

but it doesn't work (I don't see the slider).

How can I fix it?

Thanks

Dmitri

Re: What class/interface do I need to extend/implement to create a custom Sapphire property editor? [message #1486031 is a reply to message #1481832]

Mon, 24 November 2014 14:19

Eclipse User

It looks like recent refactoring has rendered this presentation inaccessible. I will open a bug to track fixing this. In the meantime, you can work-around this by copying the ScalePropertyEditorPresentation class.

Also, I forgot that the factory hint requires the use of the import package directive, so the usage would be something like this:

  <import>
    <package>some.package</package>
  </import>

    <property-editor>
        <scale-vertically>false</scale-vertically>
        <property>PropertyName</property>
        <show-label>true</show-label>
        <hint>
            <name>factory</name>
            <value>ScalePropertyEditorPresentation$Factory</value>
        </hint>
    </property-editor>

Re: What class/interface do I need to extend/implement to create a custom Sapphire property editor? [message #1486187 is a reply to message #1486031]

Mon, 24 November 2014 17:19

Eclipse User

The following bug tracks the inability to access the scale presentation.

https://bugs.eclipse.org/bugs/show_bug.cgi?id=453121

This is issue is now fixed. The fix will ship in the upcoming 8.1.1 release. Could you try a pre-release build to verify that you are able to access the scale presentation? Please use build 22 or newer and make a note in the bug with your findings.

https://hudson.eclipse.org/sapphire/job/8.1.x/22/

To use the scale presentation, please remove the factory hint and set Sapphire.PropertyEditor.Scale style.

<property-editor>
    <property>PropertyName</property>
    <style>Sapphire.PropertyEditor.Scale</style>
</property-editor>

The scale presentation will activate automatically if this style is specified for the property editor and the property is an integer property with a @NumericRange constraint, where min and max are both specified.

Re: What class/interface do I need to extend/implement to create a custom Sapphire property editor? [message #1487161 is a reply to message #1486187]

Tue, 25 November 2014 11:15

Eclipse User

Hello Konstantin!

Thanks for your efforts.

I've tried the new Sapphire, but got an error (see the bug report for details).

Best regards

Dmitri

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