如何在Eclipse RCP中将父首选项页面链接到子首选项页面？

Question

I have a preference page in Eclipse that contains a checkbox. This is the parent preference page.

The child preference page should contain different field editors based on some checkboxes values in the parent page.

Example: If checkbox in parent checked then create a text field in child.

I want to update/redraw the child page when I press apply.

I was trying to do this in the following way:

My child page class looks like this:

public class MyChildPreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage

Overwritting setVisible method:

@Override
public void setVisible(final boolean visible)
{        
    super.setVisible(visible);        
    if (visible)
        createFieldEditors();            
}

My createFieldEditors method creates the fields using the same Composite everytime.

Still, no update is happening.

Is there a way to re-trigger preference page creation when changing the focus/visibility ?

This question was not answered and it is similar: Refresh the contents of an eclipse preference page

Answer 1

You could try calling FieldEditorPreferencePage#initialize() instead? That calls load() on each of the field editors.

Answer 2

You should only create the field editors once.

You can override the propertyChange method of FieldEditorPreferencePage to be told about each preference property change:

@Override
public void propertyChange(PropertyChangeEvent event) {

  String propertyId = event.getProperty();

  ... 

  super.propertyChange();
}