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/*******************************************************************************
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* Copyright (c) 2008 Wind River Systems and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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* Wind River Systems - initial API and implementation
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*******************************************************************************/
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package org.eclipse.cdt.dsf.debug.internal.ui.viewmodel.actions;
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import java.util.ArrayList;
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import java.util.List;
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import org.eclipse.cdt.dsf.debug.ui.viewmodel.actions.VMHandlerUtils;
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import org.eclipse.cdt.dsf.ui.viewmodel.IVMProvider;
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import org.eclipse.cdt.dsf.ui.viewmodel.update.ICachingVMProvider;
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import org.eclipse.cdt.dsf.ui.viewmodel.update.IVMUpdatePolicy;
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import org.eclipse.jface.action.Action;
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import org.eclipse.jface.action.ActionContributionItem;
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import org.eclipse.jface.action.ContributionItem;
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import org.eclipse.jface.action.IContributionItem;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.widgets.Menu;
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import org.eclipse.swt.widgets.MenuItem;
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import org.eclipse.ui.actions.CompoundContributionItem;
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import org.eclipse.ui.menus.IWorkbenchContribution;
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import org.eclipse.ui.services.IServiceLocator;
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* Dynamic menu contribution that shows available update policies
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* in the current view.
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public class UpdatePoliciesContribution extends CompoundContributionItem implements IWorkbenchContribution {
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private class SelectUpdatePolicyAction extends Action {
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private final ICachingVMProvider fProvider;
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private final IVMUpdatePolicy fPolicy;
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SelectUpdatePolicyAction(ICachingVMProvider provider, IVMUpdatePolicy policy) {
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super(policy.getName(), AS_RADIO_BUTTON);
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fProvider.setActiveUpdatePolicy(fPolicy);
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private IServiceLocator fServiceLocator;
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private static IContributionItem[] NO_UPDATE_POLICIES_CONTRIBUTION_ITEMS = new IContributionItem[] {
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new ContributionItem() {
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public void fill(Menu menu, int index) {
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MenuItem item = new MenuItem(menu, SWT.NONE);
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item.setEnabled(false);
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item.setText(MessagesForVMActions.UpdatePoliciesContribution_EmptyPoliciesList_label);
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public boolean isEnabled() {
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protected IContributionItem[] getContributionItems() {
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IVMProvider provider = VMHandlerUtils.getActiveVMProvider(fServiceLocator);
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// If no part or selection, disable all.
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if (provider == null || !(provider instanceof ICachingVMProvider)) {
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return NO_UPDATE_POLICIES_CONTRIBUTION_ITEMS;
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ICachingVMProvider cachingProvider = (ICachingVMProvider)provider;
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IVMUpdatePolicy[] policies = cachingProvider.getAvailableUpdatePolicies();
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IVMUpdatePolicy activePolicy = cachingProvider.getActiveUpdatePolicy();
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List<Action> actions = new ArrayList<Action>(policies.length);
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for (IVMUpdatePolicy policy : policies) {
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Action action = new SelectUpdatePolicyAction(cachingProvider, policy);
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if (policy.getID().equals(activePolicy.getID())) {
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action.setChecked(true);
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if ( actions.isEmpty() ) {
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return NO_UPDATE_POLICIES_CONTRIBUTION_ITEMS;
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IContributionItem[] items = new IContributionItem[actions.size()];
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for (int i = 0; i < actions.size(); i++) {
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items[i] = new ActionContributionItem(actions.get(i));
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public void initialize(IServiceLocator serviceLocator) {
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fServiceLocator = serviceLocator;