bundles/org.eclipse.equinox.p2.ui/src/org/eclipse/equinox/internal/p2/ui/dialogs/SelectableIUsPage.java - equinox/rt.equinox.p2 - Git at Google

 /*******************************************************************************
  * Copyright (c) 2008, 2018 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
  *     EclipseSource - ongoing development
  *     Sonatype, Inc. - ongoing development
  *     Red Hat, Inc. - support for remediation page
  *******************************************************************************/
 package org.eclipse.equinox.internal.p2.ui.dialogs;

 import java.util.ArrayList;
 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.internal.p2.ui.viewers.*;
 import org.eclipse.equinox.p2.metadata.IInstallableUnit;
 import org.eclipse.equinox.p2.operations.ProfileChangeOperation;
 import org.eclipse.equinox.p2.ui.Policy;
 import org.eclipse.equinox.p2.ui.ProvisioningUI;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.viewers.CheckboxTableViewer;
 import org.eclipse.jface.wizard.IWizardPage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.SashForm;
 import org.eclipse.swt.layout.*;
 import org.eclipse.swt.widgets.*;

 /**
  * A wizard page that presents a check box list of IUs and allows the user
  * to select and deselect them.  Typically the first page in a provisioning
  * operation wizard, and usually it is the page used to report resolution errors
  * before advancing to resolution detail.
  *
  * @since 3.5
  *
  */
 public class SelectableIUsPage extends ResolutionStatusPage implements IResolutionErrorReportingPage {

 	private static final String DIALOG_SETTINGS_SECTION = "SelectableIUsPage"; //$NON-NLS-1$

 	IUElementListRoot root;
 	Object[] initialSelections;
 	ProfileChangeOperation resolvedOperation;
 	CheckboxTableViewer tableViewer;
 	IUDetailsGroup iuDetailsGroup;
 	ProvElementContentProvider contentProvider;
 	IUDetailsLabelProvider labelProvider;
 	protected Display display;
 	protected Policy policy;
 	SashForm sashForm;

 	public SelectableIUsPage(ProvisioningUI ui, ProvisioningOperationWizard wizard, IUElementListRoot root, Object[] initialSelections) {
 		super("IUSelectionPage", ui, wizard); //$NON-NLS-1$
 		this.root = root;
 		if (root == null)
 			root = new IUElementListRoot(ui);
 		if (initialSelections == null)
 			this.initialSelections = new IInstallableUnit[0];
 		else
 			this.initialSelections = initialSelections;

 	}

 	@Override
 	public void createControl(Composite parent) {
 		display = parent.getDisplay();
 		sashForm = new SashForm(parent, SWT.VERTICAL);
 		FillLayout layout = new FillLayout();
 		sashForm.setLayout(layout);
 		GridData data = new GridData(GridData.FILL_BOTH);
 		sashForm.setLayoutData(data);
 		initializeDialogUnits(sashForm);

 		Composite composite = new Composite(sashForm, SWT.NONE);
 		GridLayout gridLayout = new GridLayout();
 		gridLayout.marginWidth = 0;
 		gridLayout.marginHeight = 0;
 		composite.setLayout(gridLayout);

 		tableViewer = createTableViewer(composite);
 		data = new GridData(GridData.FILL_BOTH);
 		data.heightHint = convertHeightInCharsToPixels(ILayoutConstants.DEFAULT_TABLE_HEIGHT);
 		data.widthHint = convertWidthInCharsToPixels(ILayoutConstants.DEFAULT_TABLE_WIDTH);
 		Table table = tableViewer.getTable();
 		table.setLayoutData(data);
 		table.setHeaderVisible(true);
 		activateCopy(table);
 		IUColumnConfig[] columns = getColumnConfig();
 		for (int i = 0; i < columns.length; i++) {
 			TableColumn tc = new TableColumn(table, SWT.LEFT, i);
 			tc.setResizable(true);
 			tc.setText(columns[i].getColumnTitle());
 			tc.setWidth(columns[i].getWidthInPixels(table));
 		}

 		tableViewer.addSelectionChangedListener(event -> setDetailText(resolvedOperation));

 		tableViewer.addCheckStateListener(event -> {
 			// If the checkEvent is on a locked update element, uncheck it and select it.
 			if (event.getElement() instanceof AvailableUpdateElement) {
 				AvailableUpdateElement checkedElement = (AvailableUpdateElement) event.getElement();
 				if (checkedElement.isLockedForUpdate()) {
 					event.getCheckable().setChecked(checkedElement, false);
 					// Select the element so that the locked description is displayed
 					CheckboxTableViewer viewer = ((CheckboxTableViewer) event.getSource());
 					int itemCount = viewer.getTable().getItemCount();
 					for (int i = 0; i < itemCount; i++) {
 						if (viewer.getElementAt(i).equals(checkedElement)) {
 							viewer.getTable().deselectAll();
 							viewer.getTable().select(i);
 							setDetailText(resolvedOperation);
 							break;
 						}
 					}
 				}
 			}
 			updateSelection();
 		});

 		// Filters and sorters before establishing content, so we don't refresh unnecessarily.
 		IUComparator comparator = new IUComparator(IUComparator.IU_NAME);
 		comparator.useColumnConfig(ProvUI.getIUColumnConfig());
 		tableViewer.setComparator(comparator);
 		tableViewer.setComparer(new ProvElementComparer());

 		contentProvider = new ProvElementContentProvider();
 		tableViewer.setContentProvider(contentProvider);
 		labelProvider = new IUDetailsLabelProvider(null, ProvUI.getIUColumnConfig(), getShell());
 		tableViewer.setLabelProvider(labelProvider);
 		tableViewer.setInput(root);
 		setInitialCheckState();

 		// Select and Deselect All buttons
 		createSelectButtons(composite);

 		// Controls for filtering/presentation/site selection
 		Composite controlsComposite = new Composite(composite, SWT.NONE);
 		gridLayout = new GridLayout();
 		gridLayout.marginWidth = 0;
 		gridLayout.marginHeight = 0;
 		gridLayout.numColumns = 2;
 		gridLayout.makeColumnsEqualWidth = true;
 		gridLayout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
 		controlsComposite.setLayout(layout);
 		GridData gd = new GridData(SWT.FILL, SWT.FILL, true, false);
 		controlsComposite.setLayoutData(gd);

 		// The text area shows a description of the selected IU, or error detail if applicable.
 		iuDetailsGroup = new IUDetailsGroup(sashForm, tableViewer, convertWidthInCharsToPixels(ILayoutConstants.DEFAULT_TABLE_WIDTH), true);

 		updateStatus(root, resolvedOperation);
 		setControl(sashForm);
 		sashForm.setWeights(getSashWeights());
 		Dialog.applyDialogFont(sashForm);
 	}

 	private void createSelectButtons(Composite parent) {
 		Composite buttonParent = new Composite(parent, SWT.NONE);
 		GridLayout gridLayout = new GridLayout();
 		gridLayout.numColumns = 3;
 		gridLayout.marginWidth = 0;
 		gridLayout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
 		buttonParent.setLayout(gridLayout);
 		GridData data = new GridData(SWT.FILL, SWT.DEFAULT, true, false);
 		buttonParent.setLayoutData(data);

 		Button selectAll = new Button(buttonParent, SWT.PUSH);
 		selectAll.setText(ProvUIMessages.SelectableIUsPage_Select_All);
 		setButtonLayoutData(selectAll);
 		selectAll.addListener(SWT.Selection, event -> {
 			tableViewer.setAllChecked(true);
 			updateSelection();
 		});

 		Button deselectAll = new Button(buttonParent, SWT.PUSH);
 		deselectAll.setText(ProvUIMessages.SelectableIUsPage_Deselect_All);
 		setButtonLayoutData(deselectAll);
 		deselectAll.addListener(SWT.Selection, event -> {
 			tableViewer.setAllChecked(false);
 			updateSelection();
 		});

 		// dummy to take extra space
 		Label dummy = new Label(buttonParent, SWT.NONE);
 		data = new GridData(SWT.FILL, SWT.FILL, true, true);
 		dummy.setLayoutData(data);

 		// separator underneath
 		Label sep = new Label(buttonParent, SWT.HORIZONTAL | SWT.SEPARATOR);
 		data = new GridData(SWT.FILL, SWT.DEFAULT, true, false);
 		data.horizontalSpan = 3;
 		sep.setLayoutData(data);
 	}

 	protected CheckboxTableViewer createTableViewer(Composite parent) {
 		// The viewer allows selection of IU's for browsing the details,
 		// and checking to include in the provisioning operation.
 		CheckboxTableViewer v = CheckboxTableViewer.newCheckList(parent, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI);
 		return v;
 	}

 	@Override
 	public Object[] getCheckedIUElements() {
 		if (tableViewer == null)
 			return initialSelections;
 		return tableViewer.getCheckedElements();
 	}

 	@Override
 	public Object[] getSelectedIUElements() {
 		return tableViewer.getStructuredSelection().toArray();
 	}

 	@Override
 	protected Object[] getSelectedElements() {
 		return tableViewer.getStructuredSelection().toArray();
 	}

 	protected IInstallableUnit[] elementsToIUs(Object[] elements) {
 		IInstallableUnit[] theIUs = new IInstallableUnit[elements.length];
 		for (int i = 0; i < elements.length; i++) {
 			theIUs[i] = ProvUI.getAdapter(elements[i], IInstallableUnit.class);
 		}
 		return theIUs;
 	}

 	protected void setInitialCheckState() {
 		if (initialSelections == null) {
 			return;
 		}

 		ArrayList<Object> selections = new ArrayList<>(initialSelections.length);

 		for (int i = 0; i < initialSelections.length; i++) {
 			if (initialSelections[i] instanceof AvailableUpdateElement) {
 				AvailableUpdateElement element = (AvailableUpdateElement) initialSelections[i];
 				if (element.isLockedForUpdate()) {
 					continue;
 				}
 			}
 			selections.add(initialSelections[i]);
 		}
 		tableViewer.setCheckedElements(selections.toArray(new Object[selections.size()]));
 	}

 	/*
 	 * Overridden so that we don't call getNextPage().
 	 * We use getNextPage() to start resolving the operation so
 	 * we only want to do that when the next button is pressed.
 	 *
 	 * (non-Javadoc)
 	 * @see org.eclipse.jface.wizard.WizardPage#canFlipToNextPage()
 	 */
 	@Override
 	public boolean canFlipToNextPage() {
 		return isPageComplete();
 	}

 	/*
 	 * Overridden to null out any cached page so that the wizard
 	 * is always consulted.  This allows wizards to do things like
 	 * synchronize previous page selections with this page.
 	 * (non-Javadoc)
 	 * @see org.eclipse.jface.wizard.WizardPage#getPreviousPage()
 	 */
 	@Override
 	public IWizardPage getPreviousPage() {
 		setPreviousPage(null);
 		return super.getPreviousPage();
 	}

 	@Override
 	protected String getClipboardText(Control control) {
 		StringBuffer buffer = new StringBuffer();
 		Object[] elements = getSelectedElements();
 		for (int i = 0; i < elements.length; i++) {
 			if (i > 0)
 				buffer.append(CopyUtils.NEWLINE);
 			buffer.append(labelProvider.getClipboardText(elements[i], CopyUtils.DELIMITER));
 		}
 		return buffer.toString();
 	}

 	@Override
 	protected IInstallableUnit getSelectedIU() {
 		java.util.List<IInstallableUnit> units = ElementUtils.elementsToIUs(getSelectedElements());
 		if (units.size() == 0)
 			return null;
 		return units.get(0);
 	}

 	@Override
 	protected IUDetailsGroup getDetailsGroup() {
 		return iuDetailsGroup;
 	}

 	@Override
 	protected boolean isCreated() {
 		return tableViewer != null;
 	}

 	@Override
 	protected void updateCaches(IUElementListRoot newRoot, ProfileChangeOperation op) {
 		resolvedOperation = op;
 		if (newRoot != null && root != newRoot) {
 			root = newRoot;
 			if (tableViewer != null)
 				tableViewer.setInput(newRoot);
 		}

 	}

 	@Override
 	public void setCheckedElements(Object[] elements) {
 		if (tableViewer == null)
 			initialSelections = elements;
 		else
 			tableViewer.setCheckedElements(elements);
 	}

 	@Override
 	protected SashForm getSashForm() {
 		return sashForm;
 	}

 	@Override
 	protected String getDialogSettingsName() {
 		return getWizard().getClass().getName() + "." + DIALOG_SETTINGS_SECTION; //$NON-NLS-1$
 	}

 	@Override
 	protected int getColumnWidth(int index) {
 		return tableViewer.getTable().getColumn(index).getWidth();
 	}

 	void updateSelection() {
 		setPageComplete(tableViewer.getCheckedElements().length > 0);
 		getProvisioningWizard().operationSelectionsChanged(this);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2008, 2018 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
	* EclipseSource - ongoing development
	* Sonatype, Inc. - ongoing development
	* Red Hat, Inc. - support for remediation page
	*******************************************************************************/
	package org.eclipse.equinox.internal.p2.ui.dialogs;

	import java.util.ArrayList;
	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.internal.p2.ui.viewers.*;
	import org.eclipse.equinox.p2.metadata.IInstallableUnit;
	import org.eclipse.equinox.p2.operations.ProfileChangeOperation;
	import org.eclipse.equinox.p2.ui.Policy;
	import org.eclipse.equinox.p2.ui.ProvisioningUI;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.viewers.CheckboxTableViewer;
	import org.eclipse.jface.wizard.IWizardPage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.SashForm;
	import org.eclipse.swt.layout.*;
	import org.eclipse.swt.widgets.*;

	/**
	* A wizard page that presents a check box list of IUs and allows the user
	* to select and deselect them. Typically the first page in a provisioning
	* operation wizard, and usually it is the page used to report resolution errors
	* before advancing to resolution detail.
	*
	* @since 3.5
	*
	*/
	public class SelectableIUsPage extends ResolutionStatusPage implements IResolutionErrorReportingPage {

	private static final String DIALOG_SETTINGS_SECTION = "SelectableIUsPage"; //$NON-NLS-1$

	IUElementListRoot root;
	Object[] initialSelections;
	ProfileChangeOperation resolvedOperation;
	CheckboxTableViewer tableViewer;
	IUDetailsGroup iuDetailsGroup;
	ProvElementContentProvider contentProvider;
	IUDetailsLabelProvider labelProvider;
	protected Display display;
	protected Policy policy;
	SashForm sashForm;

	public SelectableIUsPage(ProvisioningUI ui, ProvisioningOperationWizard wizard, IUElementListRoot root, Object[] initialSelections) {
	super("IUSelectionPage", ui, wizard); //$NON-NLS-1$
	this.root = root;
	if (root == null)
	root = new IUElementListRoot(ui);
	if (initialSelections == null)
	this.initialSelections = new IInstallableUnit[0];
	else
	this.initialSelections = initialSelections;

	}

	@Override
	public void createControl(Composite parent) {
	display = parent.getDisplay();
	sashForm = new SashForm(parent, SWT.VERTICAL);
	FillLayout layout = new FillLayout();
	sashForm.setLayout(layout);
	GridData data = new GridData(GridData.FILL_BOTH);
	sashForm.setLayoutData(data);
	initializeDialogUnits(sashForm);

	Composite composite = new Composite(sashForm, SWT.NONE);
	GridLayout gridLayout = new GridLayout();
	gridLayout.marginWidth = 0;
	gridLayout.marginHeight = 0;
	composite.setLayout(gridLayout);

	tableViewer = createTableViewer(composite);
	data = new GridData(GridData.FILL_BOTH);
	data.heightHint = convertHeightInCharsToPixels(ILayoutConstants.DEFAULT_TABLE_HEIGHT);
	data.widthHint = convertWidthInCharsToPixels(ILayoutConstants.DEFAULT_TABLE_WIDTH);
	Table table = tableViewer.getTable();
	table.setLayoutData(data);
	table.setHeaderVisible(true);
	activateCopy(table);
	IUColumnConfig[] columns = getColumnConfig();
	for (int i = 0; i < columns.length; i++) {
	TableColumn tc = new TableColumn(table, SWT.LEFT, i);
	tc.setResizable(true);
	tc.setText(columns[i].getColumnTitle());
	tc.setWidth(columns[i].getWidthInPixels(table));
	}

	tableViewer.addSelectionChangedListener(event -> setDetailText(resolvedOperation));

	tableViewer.addCheckStateListener(event -> {
	// If the checkEvent is on a locked update element, uncheck it and select it.
	if (event.getElement() instanceof AvailableUpdateElement) {
	AvailableUpdateElement checkedElement = (AvailableUpdateElement) event.getElement();
	if (checkedElement.isLockedForUpdate()) {
	event.getCheckable().setChecked(checkedElement, false);
	// Select the element so that the locked description is displayed
	CheckboxTableViewer viewer = ((CheckboxTableViewer) event.getSource());
	int itemCount = viewer.getTable().getItemCount();
	for (int i = 0; i < itemCount; i++) {
	if (viewer.getElementAt(i).equals(checkedElement)) {
	viewer.getTable().deselectAll();
	viewer.getTable().select(i);
	setDetailText(resolvedOperation);
	break;
	}
	}
	}
	}
	updateSelection();
	});

	// Filters and sorters before establishing content, so we don't refresh unnecessarily.
	IUComparator comparator = new IUComparator(IUComparator.IU_NAME);
	comparator.useColumnConfig(ProvUI.getIUColumnConfig());
	tableViewer.setComparator(comparator);
	tableViewer.setComparer(new ProvElementComparer());

	contentProvider = new ProvElementContentProvider();
	tableViewer.setContentProvider(contentProvider);
	labelProvider = new IUDetailsLabelProvider(null, ProvUI.getIUColumnConfig(), getShell());
	tableViewer.setLabelProvider(labelProvider);
	tableViewer.setInput(root);
	setInitialCheckState();

	// Select and Deselect All buttons
	createSelectButtons(composite);

	// Controls for filtering/presentation/site selection
	Composite controlsComposite = new Composite(composite, SWT.NONE);
	gridLayout = new GridLayout();
	gridLayout.marginWidth = 0;
	gridLayout.marginHeight = 0;
	gridLayout.numColumns = 2;
	gridLayout.makeColumnsEqualWidth = true;
	gridLayout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
	controlsComposite.setLayout(layout);
	GridData gd = new GridData(SWT.FILL, SWT.FILL, true, false);
	controlsComposite.setLayoutData(gd);

	// The text area shows a description of the selected IU, or error detail if applicable.
	iuDetailsGroup = new IUDetailsGroup(sashForm, tableViewer, convertWidthInCharsToPixels(ILayoutConstants.DEFAULT_TABLE_WIDTH), true);

	updateStatus(root, resolvedOperation);
	setControl(sashForm);
	sashForm.setWeights(getSashWeights());
	Dialog.applyDialogFont(sashForm);
	}

	private void createSelectButtons(Composite parent) {
	Composite buttonParent = new Composite(parent, SWT.NONE);
	GridLayout gridLayout = new GridLayout();
	gridLayout.numColumns = 3;
	gridLayout.marginWidth = 0;
	gridLayout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
	buttonParent.setLayout(gridLayout);
	GridData data = new GridData(SWT.FILL, SWT.DEFAULT, true, false);
	buttonParent.setLayoutData(data);

	Button selectAll = new Button(buttonParent, SWT.PUSH);
	selectAll.setText(ProvUIMessages.SelectableIUsPage_Select_All);
	setButtonLayoutData(selectAll);
	selectAll.addListener(SWT.Selection, event -> {
	tableViewer.setAllChecked(true);
	updateSelection();
	});

	Button deselectAll = new Button(buttonParent, SWT.PUSH);
	deselectAll.setText(ProvUIMessages.SelectableIUsPage_Deselect_All);
	setButtonLayoutData(deselectAll);
	deselectAll.addListener(SWT.Selection, event -> {
	tableViewer.setAllChecked(false);
	updateSelection();
	});

	// dummy to take extra space
	Label dummy = new Label(buttonParent, SWT.NONE);
	data = new GridData(SWT.FILL, SWT.FILL, true, true);
	dummy.setLayoutData(data);

	// separator underneath
	Label sep = new Label(buttonParent, SWT.HORIZONTAL \| SWT.SEPARATOR);
	data = new GridData(SWT.FILL, SWT.DEFAULT, true, false);
	data.horizontalSpan = 3;
	sep.setLayoutData(data);
	}

	protected CheckboxTableViewer createTableViewer(Composite parent) {
	// The viewer allows selection of IU's for browsing the details,
	// and checking to include in the provisioning operation.
	CheckboxTableViewer v = CheckboxTableViewer.newCheckList(parent, SWT.BORDER \| SWT.FULL_SELECTION \| SWT.MULTI);
	return v;
	}

	@Override
	public Object[] getCheckedIUElements() {
	if (tableViewer == null)
	return initialSelections;
	return tableViewer.getCheckedElements();
	}

	@Override
	public Object[] getSelectedIUElements() {
	return tableViewer.getStructuredSelection().toArray();
	}

	@Override
	protected Object[] getSelectedElements() {
	return tableViewer.getStructuredSelection().toArray();
	}

	protected IInstallableUnit[] elementsToIUs(Object[] elements) {
	IInstallableUnit[] theIUs = new IInstallableUnit[elements.length];
	for (int i = 0; i < elements.length; i++) {
	theIUs[i] = ProvUI.getAdapter(elements[i], IInstallableUnit.class);
	}
	return theIUs;
	}

	protected void setInitialCheckState() {
	if (initialSelections == null) {
	return;
	}

	ArrayList<Object> selections = new ArrayList<>(initialSelections.length);

	for (int i = 0; i < initialSelections.length; i++) {
	if (initialSelections[i] instanceof AvailableUpdateElement) {
	AvailableUpdateElement element = (AvailableUpdateElement) initialSelections[i];
	if (element.isLockedForUpdate()) {
	continue;
	}
	}
	selections.add(initialSelections[i]);
	}
	tableViewer.setCheckedElements(selections.toArray(new Object[selections.size()]));
	}

	/*
	* Overridden so that we don't call getNextPage().
	* We use getNextPage() to start resolving the operation so
	* we only want to do that when the next button is pressed.
	*
	* (non-Javadoc)
	* @see org.eclipse.jface.wizard.WizardPage#canFlipToNextPage()
	*/
	@Override
	public boolean canFlipToNextPage() {
	return isPageComplete();
	}

	/*
	* Overridden to null out any cached page so that the wizard
	* is always consulted. This allows wizards to do things like
	* synchronize previous page selections with this page.
	* (non-Javadoc)
	* @see org.eclipse.jface.wizard.WizardPage#getPreviousPage()
	*/
	@Override
	public IWizardPage getPreviousPage() {
	setPreviousPage(null);
	return super.getPreviousPage();
	}

	@Override
	protected String getClipboardText(Control control) {
	StringBuffer buffer = new StringBuffer();
	Object[] elements = getSelectedElements();
	for (int i = 0; i < elements.length; i++) {
	if (i > 0)
	buffer.append(CopyUtils.NEWLINE);
	buffer.append(labelProvider.getClipboardText(elements[i], CopyUtils.DELIMITER));
	}
	return buffer.toString();
	}

	@Override
	protected IInstallableUnit getSelectedIU() {
	java.util.List<IInstallableUnit> units = ElementUtils.elementsToIUs(getSelectedElements());
	if (units.size() == 0)
	return null;
	return units.get(0);
	}

	@Override
	protected IUDetailsGroup getDetailsGroup() {
	return iuDetailsGroup;
	}

	@Override
	protected boolean isCreated() {
	return tableViewer != null;
	}

	@Override
	protected void updateCaches(IUElementListRoot newRoot, ProfileChangeOperation op) {
	resolvedOperation = op;
	if (newRoot != null && root != newRoot) {
	root = newRoot;
	if (tableViewer != null)
	tableViewer.setInput(newRoot);
	}

	}

	@Override
	public void setCheckedElements(Object[] elements) {
	if (tableViewer == null)
	initialSelections = elements;
	else
	tableViewer.setCheckedElements(elements);
	}

	@Override
	protected SashForm getSashForm() {
	return sashForm;
	}

	@Override
	protected String getDialogSettingsName() {
	return getWizard().getClass().getName() + "." + DIALOG_SETTINGS_SECTION; //$NON-NLS-1$
	}

	@Override
	protected int getColumnWidth(int index) {
	return tableViewer.getTable().getColumn(index).getWidth();
	}

	void updateSelection() {
	setPageComplete(tableViewer.getCheckedElements().length > 0);
	getProvisioningWizard().operationSelectionsChanged(this);
	}
	}