| /******************************************************************************* |
| * Copyright (c) 2007, 2010 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.p2.ui.sdk; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.InputStream; |
| import java.util.HashSet; |
| import java.util.Set; |
| import org.eclipse.compare.*; |
| import org.eclipse.compare.structuremergeviewer.Differencer; |
| import org.eclipse.compare.structuremergeviewer.IStructureComparator; |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.equinox.internal.p2.ui.ProvUI; |
| import org.eclipse.equinox.internal.p2.ui.ProvUIMessages; |
| import org.eclipse.equinox.internal.p2.ui.model.*; |
| import org.eclipse.equinox.p2.metadata.IInstallableUnit; |
| import org.eclipse.equinox.p2.ui.ProvisioningUI; |
| import org.eclipse.equinox.p2.ui.RevertProfilePage; |
| import org.eclipse.jface.dialogs.IDialogConstants; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Composite; |
| |
| /** |
| * Same as {@link RevertProfilePage} but adds a compare button to compare profiles. |
| * |
| * @see RevertProfilePage |
| * |
| * @noextend This class is not intended to be subclassed by clients. |
| * @noinstantiate This class is not intended to be instantiated by clients. |
| * @since 2.0 |
| */ |
| public class RevertProfilePageWithCompare extends RevertProfilePage { |
| |
| private static final int COMPARE_ID = IDialogConstants.CLIENT_ID + 2; |
| Button compareButton; |
| |
| /* |
| * (non-Javadoc) |
| * @see org.eclipse.ui.about.InstallationPage#createPageButtons(org.eclipse.swt.widgets.Composite) |
| */ |
| public void createPageButtons(Composite parent) { |
| if (ProvisioningUI.getDefaultUI().getProfileId() == null) |
| return; |
| compareButton = createButton(parent, COMPARE_ID, ProvUIMessages.RevertProfilePage_CompareLabel); |
| compareButton.setToolTipText(ProvUIMessages.RevertProfilePage_CompareTooltip); |
| compareButton.setEnabled(computeCompareEnablement(getSelection())); |
| super.createPageButtons(parent); |
| } |
| |
| protected void buttonPressed(int buttonId) { |
| switch (buttonId) { |
| case COMPARE_ID : |
| compare(); |
| break; |
| default : |
| super.buttonPressed(buttonId); |
| break; |
| } |
| } |
| |
| boolean computeCompareEnablement(IStructuredSelection structuredSelection) { |
| // compare is enabled if there are two elements selected |
| Object[] selection = structuredSelection.toArray(); |
| if (selection.length == 2) { |
| for (int i = 0; i < selection.length; i++) { |
| if (!(selection[i] instanceof RollbackProfileElement)) |
| return false; |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| protected void handleSelectionChanged(IStructuredSelection selection) { |
| super.handleSelectionChanged(selection); |
| if (!selection.isEmpty()) { |
| if (selection.size() == 1) { |
| if (compareButton != null) |
| compareButton.setEnabled(false); |
| } else { |
| // multiple selections, we can compare |
| if (compareButton != null) |
| compareButton.setEnabled(computeCompareEnablement(selection)); |
| } |
| } else { |
| // Nothing is selected |
| if (compareButton != null) |
| compareButton.setEnabled(false); |
| } |
| } |
| |
| private RollbackProfileElement[] getRollbackProfileElementsToCompare() { |
| // expecting two items selected |
| RollbackProfileElement[] result = new RollbackProfileElement[2]; |
| IStructuredSelection selection = getSelection(); |
| int i = 0; |
| for (Object selected : selection.toList()) { |
| if (selected != null && selected instanceof RollbackProfileElement) { |
| result[i++] = (RollbackProfileElement) selected; |
| } |
| if (i == 2) |
| break; |
| } |
| return result; |
| } |
| |
| void compare() { |
| final RollbackProfileElement[] rpe = getRollbackProfileElementsToCompare(); |
| CompareUI.openCompareDialog(new ProfileCompareEditorInput(rpe)); |
| } |
| |
| private class ProfileCompareEditorInput extends CompareEditorInput { |
| private Object root; |
| private ProvElementNode l; |
| private ProvElementNode r; |
| |
| public ProfileCompareEditorInput(RollbackProfileElement[] rpe) { |
| super(new CompareConfiguration()); |
| Assert.isTrue(rpe.length == 2); |
| l = new ProvElementNode(rpe[0]); |
| r = new ProvElementNode(rpe[1]); |
| } |
| |
| protected Object prepareInput(IProgressMonitor monitor) { |
| initLabels(); |
| Differencer d = new Differencer(); |
| root = d.findDifferences(false, monitor, null, null, l, r); |
| return root; |
| } |
| |
| private void initLabels() { |
| CompareConfiguration cc = getCompareConfiguration(); |
| cc.setLeftEditable(false); |
| cc.setRightEditable(false); |
| cc.setLeftLabel(l.getName()); |
| cc.setLeftImage(l.getImage()); |
| cc.setRightLabel(r.getName()); |
| cc.setRightImage(r.getImage()); |
| } |
| |
| public String getOKButtonLabel() { |
| return IDialogConstants.OK_LABEL; |
| } |
| } |
| |
| private class ProvElementNode implements IStructureComparator, ITypedElement, IStreamContentAccessor { |
| private ProvElement pe; |
| private IInstallableUnit iu; |
| final static String BLANK = ""; //$NON-NLS-1$ |
| private String id = BLANK; |
| |
| public ProvElementNode(Object input) { |
| pe = (ProvElement) input; |
| iu = ProvUI.getAdapter(pe, IInstallableUnit.class); |
| if (iu != null) { |
| id = iu.getId(); |
| } |
| } |
| |
| public Object[] getChildren() { |
| Set<ProvElementNode> children = new HashSet<ProvElementNode>(); |
| if (pe instanceof RollbackProfileElement) { |
| Object[] c = ((RollbackProfileElement) pe).getChildren(null); |
| for (int i = 0; i < c.length; i++) { |
| children.add(new ProvElementNode(c[i])); |
| } |
| } else if (pe instanceof InstalledIUElement) { |
| Object[] c = ((InstalledIUElement) pe).getChildren(null); |
| for (int i = 0; i < c.length; i++) { |
| children.add(new ProvElementNode(c[i])); |
| } |
| } |
| return children.toArray(); |
| } |
| |
| /** |
| * Implementation based on <code>id</code>. |
| * @param other the object to compare this <code>ProvElementNode</code> against. |
| * @return <code>true</code> if the <code>ProvElementNodes</code>are equal; <code>false</code> otherwise. |
| */ |
| public boolean equals(Object other) { |
| if (other instanceof ProvElementNode) |
| return id.equals(((ProvElementNode) other).id); |
| return super.equals(other); |
| } |
| |
| /** |
| * Implementation based on <code>id</code>. |
| * @return a hash code for this object. |
| */ |
| public int hashCode() { |
| return id.hashCode(); |
| } |
| |
| public Image getImage() { |
| return pe.getImage(null); |
| } |
| |
| public String getName() { |
| if (iu != null) { |
| return iu.getProperty(IInstallableUnit.PROP_NAME, null); |
| } |
| return pe.getLabel(null); |
| } |
| |
| public String getType() { |
| return ITypedElement.UNKNOWN_TYPE; |
| } |
| |
| public InputStream getContents() { |
| String contents = BLANK; |
| if (iu != null) { |
| contents = iu.getVersion().toString(); |
| } |
| return new ByteArrayInputStream(contents.getBytes()); |
| } |
| } |
| |
| } |