/*******************************************************************************
* Copyright (c) 2006, 2008 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.ui.internal.cheatsheets;
import org.eclipse.core.expressions.EvaluationContext;
import org.eclipse.core.runtime.Platform;
import org.eclipse.ui.PlatformUI;
/*
* Supplies en evaluation context for filtering cheat sheets. This is used for
* resolving variables in enablement expressions.
*/
public final class CheatSheetEvaluationContext {
private static final String VARIABLE_PLATFORM = "platform"; //$NON-NLS-1$
private static final String VARIABLE_WORKBENCH = "workbench"; //$NON-NLS-1$
private static EvaluationContext context;
/*
* Returns the evaluation context to use in cheat sheets.
*/
public static EvaluationContext getContext() {
if (context == null) {
context = new EvaluationContext(null, Platform.class);
context.addVariable(VARIABLE_PLATFORM, Platform.class);
context.addVariable(VARIABLE_WORKBENCH, PlatformUI.getWorkbench());
}
return context;
}
/*
* Not meant to be instantiated.
*/
private CheatSheetEvaluationContext() {
}
}