/*******************************************************************************
 * Copyright (c) 2007, 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.equinox.internal.provisional.p2.ui.actions;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.equinox.internal.p2.ui.ProvUIMessages;
import org.eclipse.equinox.internal.provisional.p2.core.ProvisionException;
import org.eclipse.equinox.internal.provisional.p2.director.ProfileChangeRequest;
import org.eclipse.equinox.internal.provisional.p2.director.ProvisioningPlan;
import org.eclipse.equinox.internal.provisional.p2.engine.ProvisioningContext;
import org.eclipse.equinox.internal.provisional.p2.metadata.IInstallableUnit;
import org.eclipse.equinox.internal.provisional.p2.ui.IProfileChooser;
import org.eclipse.equinox.internal.provisional.p2.ui.ProvUI;
import org.eclipse.equinox.internal.provisional.p2.ui.dialogs.UninstallWizard;
import org.eclipse.equinox.internal.provisional.p2.ui.model.InstalledIUElement;
import org.eclipse.equinox.internal.provisional.p2.ui.operations.ProvisioningUtil;
import org.eclipse.equinox.internal.provisional.p2.ui.policy.Policies;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.swt.widgets.Shell;

public class UninstallAction extends ProfileModificationAction {

	public UninstallAction(ISelectionProvider selectionProvider, String profileId, IProfileChooser chooser, Policies policies, Shell shell) {
		super(ProvUI.UNINSTALL_COMMAND_LABEL, selectionProvider, profileId, chooser, policies, shell);
		setToolTipText(ProvUI.UNINSTALL_COMMAND_TOOLTIP);
	}

	protected boolean isEnabledFor(Object[] selectionArray) {
		Object parent = null;
		if (selectionArray.length > 0) {
			for (int i = 0; i < selectionArray.length; i++) {
				if (selectionArray[i] instanceof InstalledIUElement) {
					InstalledIUElement element = (InstalledIUElement) selectionArray[i];
					int lock = getLock(element.getIU());
					if ((lock & IInstallableUnit.LOCK_UNINSTALL) == IInstallableUnit.LOCK_UNINSTALL)
						return false;
					if (parent == null) {
						parent = element.getParent(null);
					} else if (parent != element.getParent(null)) {
						return false;
					}
				} else {
					return false;
				}
			}
			return true;
		}
		return false;
	}

	protected String getTaskName() {
		return ProvUIMessages.UninstallIUProgress;
	}

	protected void performOperation(IInstallableUnit[] ius, String targetProfileId, ProvisioningPlan plan) {
		UninstallWizard wizard = new UninstallWizard(targetProfileId, ius, plan);
		WizardDialog dialog = new WizardDialog(getShell(), wizard);
		dialog.open();
	}

	protected ProvisioningPlan getProvisioningPlan(IInstallableUnit[] ius, String targetProfileId, IProgressMonitor monitor) throws ProvisionException {
		ProfileChangeRequest request = ProfileChangeRequest.createByProfileId(targetProfileId);
		request.removeInstallableUnits(ius);
		return ProvisioningUtil.getProvisioningPlan(request, new ProvisioningContext(), monitor);
	}

}