| /******************************************************************************* |
| * Copyright (c) 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.ui.internal.activities; |
| |
| import org.eclipse.core.expressions.PropertyTester; |
| import org.eclipse.ui.IWorkbench; |
| import org.eclipse.ui.activities.IActivityManager; |
| import org.eclipse.ui.activities.IWorkbenchActivitySupport; |
| import org.eclipse.ui.activities.WorkbenchActivityHelper; |
| |
| /** |
| * An expressions property tester that tests whether or not an activity or |
| * category of activities is enabled. Useful for cross-component links and to |
| * control discoverability of functionality. |
| * |
| * @since 3.3 |
| */ |
| public class ActivityPropertyTester extends PropertyTester { |
| |
| private static final String PROPERTY_IS_ACTIVITY_ENABLED = "isActivityEnabled"; //$NON-NLS-1$ |
| private static final String PROPERTY_IS_CATEGORY_ENABLED = "isCategoryEnabled"; //$NON-NLS-1$ |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.core.expressions.PropertyTester#test(java.lang.Object, |
| * java.lang.String, java.lang.Object[], java.lang.Object) |
| */ |
| public boolean test(Object receiver, String property, Object[] args, |
| Object expectedValue) { |
| if (args.length == 1 && receiver instanceof IWorkbench && args[0] instanceof String) { |
| if (PROPERTY_IS_ACTIVITY_ENABLED.equals(property)) { |
| return isActivityEnabled((String) args[0], (IWorkbench)receiver); |
| } else if (PROPERTY_IS_CATEGORY_ENABLED.equals(property)) { |
| return isCategoryEnabled((String) args[0], (IWorkbench)receiver); |
| } |
| } |
| return false; |
| } |
| |
| private static boolean isActivityEnabled(String activityId, IWorkbench workbench) { |
| try { |
| IWorkbenchActivitySupport workbenchActivitySupport = |
| workbench.getActivitySupport(); |
| IActivityManager activityManager = workbenchActivitySupport |
| .getActivityManager(); |
| return activityManager.getActivity(activityId).isEnabled(); |
| } catch (Exception e) { |
| // workbench not yet activated; nothing enabled yet |
| } |
| return false; |
| } |
| |
| private static boolean isCategoryEnabled(String categoryId, IWorkbench workbench) { |
| try { |
| IWorkbenchActivitySupport workbenchActivitySupport = |
| workbench.getActivitySupport(); |
| IActivityManager activityManager = workbenchActivitySupport |
| .getActivityManager(); |
| return WorkbenchActivityHelper.isEnabled(activityManager, |
| categoryId); |
| } catch (Exception e) { |
| // workbench not yet activated; nothing enabled yet |
| } |
| return false; |
| } |
| } |