[news.eclipse.platform.swt] Re: FieldEditor does not write default-value

[Haris Peco <snpe@xxxxxxxxxx>]

arne,
set default values in preference initializer
see extension point org.eclipse.core.runtime.preferences
and class
org.eclipse.core.runtime.preferences.AbstractPreferencesInitializer

Peco
arne anka wrote:

> in a prefgerences-page i have two FieldEditors. to ease the use i display
> default-values, so the suer has not to type in any values if he's happy
> with default ones.
> but the default values are not stored to the prefs -- thus any attempt to
> use those values causes an error.
> if i fill in arbitrary values, different from the default, it's stored --
> but thus the ability to present default values seems meaningless to me.
> what do i wrong, how do i force the FieldEditors to save even the
> unchanged default?
> 
> 
> public class LocalDBPreferencePage extends FieldEditorPreferencePage
> implements IWorkbenchPreferencePage {
> 
>      IPreferenceStore ips;
> 
> public LocalDBPreferencePage() {
> super(GRID);
> setPreferenceStore(ips=MyPlugin.getDefault().getPreferenceStore());
> setDescription("Preference page for the local Derby-DB");
> ips.setDefault("derbydbpath",
> Platform.getLocation().toOSString());
> ips.setDefault("derbydbname", "NJVDB");
> }
> 
> public void createFieldEditors() {
> Composite fep=getFieldEditorParent();
> 
>         DirectoryFieldEditor dfe=new
> DirectoryFieldEditor(PreferenceConstants.P_PATH, "&Speicherort der DB:",
> fep);
> dfe.setPreferenceName("derbydbpath");
> addField(dfe);
> 
> StringFieldEditor sfeDBN=new
> StringFieldEditor(PreferenceConstants.P_STRING, "Datenbankname:", fep);
> sfeDBN.setPreferenceName("derbydbname");
> addField(sfeDBN);
> }
> 
> public void init(IWorkbench workbench) {}
> 
> }