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/*******************************************************************************
* Copyright (c) 2004, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.core.runtime.preferences;
import org.eclipse.core.internal.preferences.AbstractScope;
import org.eclipse.core.runtime.IPath;
/**
* Object representing the default scope in the Eclipse preferences
* hierarchy. Can be used as a context for searching for preference
* values (in the IPreferencesService APIs) or for determining the
* correct preference node to set values in the store.
* <p>
* Default preferences are not persisted to disk.
* </p>
* <p>
* The path for preferences defined in the default scope hierarchy
* is as follows: <code>/default/<qualifier></code>
* </p>
* <p>
* Note about product preference customization:
* Clients who define their own {@link org.eclipse.core.runtime.IProduct}
* are able to specify a product key of "<code>preferenceCustomization</code>".
* (defined as a constant in {@link org.eclipse.ui.branding.IProductConstants})
* Its value is either a {@link java.net.URL} or a file-system path to a
* file whose contents are used to customize default preferences.
* </p>
* <p>
* This class is not intended to be subclassed. This class may be instantiated.
* </p>
* @since 3.0
*/
public final class DefaultScope extends AbstractScope implements IScopeContext {
/**
* String constant (value of <code>"default"</code>) used for the
* scope name for the default preference scope.
*/
public static final String SCOPE = "default"; //$NON-NLS-1$
/**
* Create and return a new default scope instance.
*/
public DefaultScope() {
super();
}
/*
* @see org.eclipse.core.runtime.preferences.IScopeContext#getName()
*/
public String getName() {
return SCOPE;
}
/* (non-Javadoc)
* @see org.eclipse.core.runtime.preferences.IScopeContext#getNode(java.lang.String)
*/
public IEclipsePreferences getNode(String qualifier) {
return super.getNode(qualifier);
}
/*
* @see org.eclipse.core.runtime.preferences.IScopeContext#getLocation()
*/
public IPath getLocation() {
// We don't persist defaults so return null.
return null;
}
}
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