core/plugins/org.eclipse.dltk.ui/ui refactoring/org/eclipse/dltk/internal/ui/refactoring/reorg/DeleteWizard.java - dltk/org.eclipse.dltk.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 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
  *
  *******************************************************************************/
 package org.eclipse.dltk.internal.ui.refactoring.reorg;

 import org.eclipse.core.resources.IResource;
 import org.eclipse.dltk.core.IModelElement;
 import org.eclipse.dltk.core.IProjectFragment;
 import org.eclipse.dltk.core.IScriptFolder;
 import org.eclipse.dltk.core.ISourceModule;
 import org.eclipse.dltk.core.ModelException;
 import org.eclipse.dltk.core.ScriptModelUtil;
 import org.eclipse.dltk.internal.corext.refactoring.reorg.ReorgUtils;
 import org.eclipse.dltk.internal.corext.refactoring.reorg.ScriptDeleteProcessor;
 import org.eclipse.dltk.internal.corext.refactoring.util.ModelElementUtil;
 import org.eclipse.dltk.internal.corext.util.Messages;
 import org.eclipse.dltk.internal.ui.refactoring.MessageWizardPage;
 import org.eclipse.dltk.internal.ui.refactoring.RefactoringMessages;
 import org.eclipse.dltk.ui.DLTKUIPlugin;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.ltk.core.refactoring.Refactoring;
 import org.eclipse.ltk.core.refactoring.participants.DeleteRefactoring;
 import org.eclipse.ltk.core.refactoring.participants.RefactoringProcessor;
 import org.eclipse.ltk.ui.refactoring.RefactoringWizard;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;

 public class DeleteWizard extends RefactoringWizard {

 	public DeleteWizard(Refactoring refactoring) {
 		super(refactoring, DIALOG_BASED_USER_INTERFACE | YES_NO_BUTTON_STYLE
 				| NO_PREVIEW_PAGE | NO_BACK_BUTTON_ON_STATUS_DIALOG);
 		setDefaultPageTitle(RefactoringMessages.DeleteWizard_1);
 		((ScriptDeleteProcessor) ((DeleteRefactoring) getRefactoring())
 				.getProcessor()).setQueries(new ReorgQueries(this));
 	}

 	@Override
 	protected void addUserInputPages() {
 		addPage(new DeleteInputPage());
 	}

 	@Override
 	public int getMessageLineWidthInChars() {
 		return 0;
 	}

 	@Override
 	public boolean needsProgressMonitor() {
 		DeleteRefactoring refactoring = (DeleteRefactoring) getRefactoring();
 		RefactoringProcessor processor = refactoring.getProcessor();
 		if (processor instanceof ScriptDeleteProcessor) {
 			return ((ScriptDeleteProcessor) processor).needsProgressMonitor();
 		}
 		return super.needsProgressMonitor();
 	}

 	private static class DeleteInputPage extends MessageWizardPage {
 		private static final String PAGE_NAME = "DeleteInputPage"; //$NON-NLS-1$
 		private static final String DIALOG_SETTINGS_DELETE_SUB_PACKAGES = "deleteSubPackages"; //$NON-NLS-1$
 		private Button fDeleteSubPackagesCheckBox;

 		public DeleteInputPage() {
 			super(PAGE_NAME, true, MessageWizardPage.STYLE_QUESTION);
 		}

 		@Override
 		protected String getMessageString() {
 			try {
 				if (1 == numberOfSelectedElements()) {
 					String pattern = createConfirmationStringForOneElement();
 					String name = getNameOfSingleSelectedElement();
 					return Messages.format(pattern, name);
 				}
 				String pattern = createConfirmationStringForManyElements();
 				return Messages.format(pattern,
 						String.valueOf(numberOfSelectedElements()));
 			} catch (ModelException e) {
 				// http://bugs.eclipse.org/bugs/show_bug.cgi?id=19253
 				if (ScriptModelUtil.isExceptionToBeLogged(e))
 					DLTKUIPlugin.log(e);
 				setPageComplete(false);
 				if (e.isDoesNotExist())
 					return RefactoringMessages.DeleteWizard_12;
 				return RefactoringMessages.DeleteWizard_2;
 			}
 		}

 		@Override
 		public void createControl(Composite parent) {
 			super.createControl(parent);

 			if (getDeleteProcessor().hasSubPackagesToDelete())
 				addDeleteSubPackagesCheckBox();
 		}

 		/**
 		 * Adds the "delete subpackages" checkbox to the composite. Note that
 		 * this code assumes that the control of the parent is a Composite with
 		 * GridLayout and a horizontal span of 2.
 		 *
 		 * @see MessageWizardPage#createControl(Composite)
 		 */
 		private void addDeleteSubPackagesCheckBox() {

 			Composite c = new Composite((Composite) getControl(), SWT.NONE);
 			GridLayout gd = new GridLayout();
 			gd.horizontalSpacing = 10;
 			c.setLayout(gd);

 			GridData data = new GridData(GridData.FILL_HORIZONTAL);
 			data.horizontalSpan = 2;
 			c.setLayoutData(data);

 			final boolean selection = getRefactoringSettings()
 					.getBoolean(DIALOG_SETTINGS_DELETE_SUB_PACKAGES);

 			fDeleteSubPackagesCheckBox = new Button(c, SWT.CHECK);
 			fDeleteSubPackagesCheckBox.setText(
 					RefactoringMessages.DeleteWizard_also_delete_sub_packages);
 			fDeleteSubPackagesCheckBox.setSelection(selection);

 			fDeleteSubPackagesCheckBox
 					.addSelectionListener(new SelectionAdapter() {

 						@Override
 						public void widgetSelected(SelectionEvent event) {
 							getDeleteProcessor().setDeleteSubPackages(
 									fDeleteSubPackagesCheckBox.getSelection());
 						}
 					});

 			getDeleteProcessor().setDeleteSubPackages(
 					fDeleteSubPackagesCheckBox.getSelection());
 		}

 		private String getNameOfSingleSelectedElement() throws ModelException {
 			if (getSingleSelectedResource() != null) {
 				return ReorgUtils.getName(getSingleSelectedResource());
 			}
 			return ReorgUtils.getName(getSingleSelectedScriptElement());
 		}

 		private IModelElement getSingleSelectedScriptElement() {
 			IModelElement[] elements = getSelectedScriptElements();
 			return elements.length == 1 ? elements[0] : null;
 		}

 		private IResource getSingleSelectedResource() {
 			IResource[] resources = getSelectedResources();
 			return resources.length == 1 ? resources[0] : null;
 		}

 		private int numberOfSelectedElements() {
 			return getSelectedScriptElements().length
 					+ getSelectedResources().length;
 		}

 		@Override
 		protected boolean performFinish() {
 			return super.performFinish() || getDeleteProcessor().wasCanceled(); // close
 																				// the
 																				// dialog
 																				// if
 																				// canceled
 		}

 		protected boolean saveSettings() {
 			if (getContainer() instanceof Dialog)
 				return ((Dialog) getContainer())
 						.getReturnCode() == IDialogConstants.OK_ID;
 			return true;
 		}

 		@Override
 		public void dispose() {
 			if (fDeleteSubPackagesCheckBox != null && saveSettings())
 				getRefactoringSettings().put(
 						DIALOG_SETTINGS_DELETE_SUB_PACKAGES,
 						fDeleteSubPackagesCheckBox.getSelection());
 			super.dispose();
 		}

 		private String createConfirmationStringForOneElement()
 				throws ModelException {
 			IModelElement[] elements = getSelectedScriptElements();
 			if (elements.length == 1) {
 				IModelElement element = elements[0];
 				if (isDefaultPackageWithLinkedFiles(element))
 					return RefactoringMessages.DeleteWizard_3;

 				if (!isLinkedResource(element))
 					return RefactoringMessages.DeleteWizard_4;

 				if (isLinkedPackageOrProjectFragment(element))
 					// XXX workaround for jcore bugs 31998 and 31456 - linked
 					// packages or source folders cannot be deleted properly
 					return RefactoringMessages.DeleteWizard_6;

 				return RefactoringMessages.DeleteWizard_5;
 			}
 			if (isLinked(getSelectedResources()[0])) {// checked before that
 														// this will work
 				return RefactoringMessages.DeleteWizard_7;
 			}
 			return RefactoringMessages.DeleteWizard_8;
 		}

 		private String createConfirmationStringForManyElements()
 				throws ModelException {
 			IResource[] resources = getSelectedResources();
 			IModelElement[] modelElements = getSelectedScriptElements();
 			if (!containsLinkedResources(resources, modelElements))
 				return RefactoringMessages.DeleteWizard_9;

 			if (!containsLinkedPackagesOrProjectFragments(modelElements))
 				return RefactoringMessages.DeleteWizard_10;

 			// XXX workaround for jcore bugs - linked packages or source folders
 			// cannot be deleted properly
 			return RefactoringMessages.DeleteWizard_11;
 		}

 		private static boolean isLinkedPackageOrProjectFragment(
 				IModelElement element) {
 			if ((element instanceof IScriptFolder)
 					|| (element instanceof IProjectFragment)) {
 				return isLinkedResource(element);
 			}
 			return false;
 		}

 		private static boolean containsLinkedPackagesOrProjectFragments(
 				IModelElement[] modelElements) {
 			for (int i = 0; i < modelElements.length; i++) {
 				IModelElement element = modelElements[i];
 				if (isLinkedPackageOrProjectFragment(element))
 					return true;
 			}
 			return false;
 		}

 		private static boolean containsLinkedResources(IResource[] resources,
 				IModelElement[] modelElements) throws ModelException {
 			for (int i = 0; i < modelElements.length; i++) {
 				IModelElement element = modelElements[i];
 				if (isLinkedResource(element))
 					return true;
 				if (isDefaultPackageWithLinkedFiles(element))
 					return true;
 			}
 			for (int i = 0; i < resources.length; i++) {
 				IResource resource = resources[i];
 				if (isLinked(resource))
 					return true;
 			}
 			return false;
 		}

 		private static boolean isDefaultPackageWithLinkedFiles(
 				Object firstElement) throws ModelException {
 			if (!ModelElementUtil.isDefaultPackage(firstElement))
 				return false;
 			IScriptFolder defaultPackage = (IScriptFolder) firstElement;
 			ISourceModule[] cus = defaultPackage.getSourceModules();
 			for (int i = 0; i < cus.length; i++) {
 				if (isLinkedResource(cus[i]))
 					return true;
 			}
 			return false;
 		}

 		private static boolean isLinkedResource(IModelElement element) {
 			return isLinked(ReorgUtils.getResource(element));
 		}

 		private static boolean isLinked(IResource resource) {
 			return resource != null && resource.isLinked();
 		}

 		private IModelElement[] getSelectedScriptElements() {
 			return getDeleteProcessor().getScriptElementsToDelete();
 		}

 		private IResource[] getSelectedResources() {
 			return getDeleteProcessor().getResourcesToDelete();
 		}

 		private ScriptDeleteProcessor getDeleteProcessor() {
 			return (ScriptDeleteProcessor) ((DeleteRefactoring) getRefactoring())
 					.getProcessor();
 		}

 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 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
	*
	*******************************************************************************/
	package org.eclipse.dltk.internal.ui.refactoring.reorg;

	import org.eclipse.core.resources.IResource;
	import org.eclipse.dltk.core.IModelElement;
	import org.eclipse.dltk.core.IProjectFragment;
	import org.eclipse.dltk.core.IScriptFolder;
	import org.eclipse.dltk.core.ISourceModule;
	import org.eclipse.dltk.core.ModelException;
	import org.eclipse.dltk.core.ScriptModelUtil;
	import org.eclipse.dltk.internal.corext.refactoring.reorg.ReorgUtils;
	import org.eclipse.dltk.internal.corext.refactoring.reorg.ScriptDeleteProcessor;
	import org.eclipse.dltk.internal.corext.refactoring.util.ModelElementUtil;
	import org.eclipse.dltk.internal.corext.util.Messages;
	import org.eclipse.dltk.internal.ui.refactoring.MessageWizardPage;
	import org.eclipse.dltk.internal.ui.refactoring.RefactoringMessages;
	import org.eclipse.dltk.ui.DLTKUIPlugin;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.ltk.core.refactoring.Refactoring;
	import org.eclipse.ltk.core.refactoring.participants.DeleteRefactoring;
	import org.eclipse.ltk.core.refactoring.participants.RefactoringProcessor;
	import org.eclipse.ltk.ui.refactoring.RefactoringWizard;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;

	public class DeleteWizard extends RefactoringWizard {

	public DeleteWizard(Refactoring refactoring) {
	super(refactoring, DIALOG_BASED_USER_INTERFACE \| YES_NO_BUTTON_STYLE
	\| NO_PREVIEW_PAGE \| NO_BACK_BUTTON_ON_STATUS_DIALOG);
	setDefaultPageTitle(RefactoringMessages.DeleteWizard_1);
	((ScriptDeleteProcessor) ((DeleteRefactoring) getRefactoring())
	.getProcessor()).setQueries(new ReorgQueries(this));
	}

	@Override
	protected void addUserInputPages() {
	addPage(new DeleteInputPage());
	}

	@Override
	public int getMessageLineWidthInChars() {
	return 0;
	}

	@Override
	public boolean needsProgressMonitor() {
	DeleteRefactoring refactoring = (DeleteRefactoring) getRefactoring();
	RefactoringProcessor processor = refactoring.getProcessor();
	if (processor instanceof ScriptDeleteProcessor) {
	return ((ScriptDeleteProcessor) processor).needsProgressMonitor();
	}
	return super.needsProgressMonitor();
	}

	private static class DeleteInputPage extends MessageWizardPage {
	private static final String PAGE_NAME = "DeleteInputPage"; //$NON-NLS-1$
	private static final String DIALOG_SETTINGS_DELETE_SUB_PACKAGES = "deleteSubPackages"; //$NON-NLS-1$
	private Button fDeleteSubPackagesCheckBox;

	public DeleteInputPage() {
	super(PAGE_NAME, true, MessageWizardPage.STYLE_QUESTION);
	}

	@Override
	protected String getMessageString() {
	try {
	if (1 == numberOfSelectedElements()) {
	String pattern = createConfirmationStringForOneElement();
	String name = getNameOfSingleSelectedElement();
	return Messages.format(pattern, name);
	}
	String pattern = createConfirmationStringForManyElements();
	return Messages.format(pattern,
	String.valueOf(numberOfSelectedElements()));
	} catch (ModelException e) {
	// http://bugs.eclipse.org/bugs/show_bug.cgi?id=19253
	if (ScriptModelUtil.isExceptionToBeLogged(e))
	DLTKUIPlugin.log(e);
	setPageComplete(false);
	if (e.isDoesNotExist())
	return RefactoringMessages.DeleteWizard_12;
	return RefactoringMessages.DeleteWizard_2;
	}
	}

	@Override
	public void createControl(Composite parent) {
	super.createControl(parent);

	if (getDeleteProcessor().hasSubPackagesToDelete())
	addDeleteSubPackagesCheckBox();
	}

	/**
	* Adds the "delete subpackages" checkbox to the composite. Note that
	* this code assumes that the control of the parent is a Composite with
	* GridLayout and a horizontal span of 2.
	*
	* @see MessageWizardPage#createControl(Composite)
	*/
	private void addDeleteSubPackagesCheckBox() {

	Composite c = new Composite((Composite) getControl(), SWT.NONE);
	GridLayout gd = new GridLayout();
	gd.horizontalSpacing = 10;
	c.setLayout(gd);

	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.horizontalSpan = 2;
	c.setLayoutData(data);

	final boolean selection = getRefactoringSettings()
	.getBoolean(DIALOG_SETTINGS_DELETE_SUB_PACKAGES);

	fDeleteSubPackagesCheckBox = new Button(c, SWT.CHECK);
	fDeleteSubPackagesCheckBox.setText(
	RefactoringMessages.DeleteWizard_also_delete_sub_packages);
	fDeleteSubPackagesCheckBox.setSelection(selection);

	fDeleteSubPackagesCheckBox
	.addSelectionListener(new SelectionAdapter() {

	@Override
	public void widgetSelected(SelectionEvent event) {
	getDeleteProcessor().setDeleteSubPackages(
	fDeleteSubPackagesCheckBox.getSelection());
	}
	});

	getDeleteProcessor().setDeleteSubPackages(
	fDeleteSubPackagesCheckBox.getSelection());
	}

	private String getNameOfSingleSelectedElement() throws ModelException {
	if (getSingleSelectedResource() != null) {
	return ReorgUtils.getName(getSingleSelectedResource());
	}
	return ReorgUtils.getName(getSingleSelectedScriptElement());
	}

	private IModelElement getSingleSelectedScriptElement() {
	IModelElement[] elements = getSelectedScriptElements();
	return elements.length == 1 ? elements[0] : null;
	}

	private IResource getSingleSelectedResource() {
	IResource[] resources = getSelectedResources();
	return resources.length == 1 ? resources[0] : null;
	}

	private int numberOfSelectedElements() {
	return getSelectedScriptElements().length
	+ getSelectedResources().length;
	}

	@Override
	protected boolean performFinish() {
	return super.performFinish() \|\| getDeleteProcessor().wasCanceled(); // close
	// the
	// dialog
	// if
	// canceled
	}

	protected boolean saveSettings() {
	if (getContainer() instanceof Dialog)
	return ((Dialog) getContainer())
	.getReturnCode() == IDialogConstants.OK_ID;
	return true;
	}

	@Override
	public void dispose() {
	if (fDeleteSubPackagesCheckBox != null && saveSettings())
	getRefactoringSettings().put(
	DIALOG_SETTINGS_DELETE_SUB_PACKAGES,
	fDeleteSubPackagesCheckBox.getSelection());
	super.dispose();
	}

	private String createConfirmationStringForOneElement()
	throws ModelException {
	IModelElement[] elements = getSelectedScriptElements();
	if (elements.length == 1) {
	IModelElement element = elements[0];
	if (isDefaultPackageWithLinkedFiles(element))
	return RefactoringMessages.DeleteWizard_3;

	if (!isLinkedResource(element))
	return RefactoringMessages.DeleteWizard_4;

	if (isLinkedPackageOrProjectFragment(element))
	// XXX workaround for jcore bugs 31998 and 31456 - linked
	// packages or source folders cannot be deleted properly
	return RefactoringMessages.DeleteWizard_6;

	return RefactoringMessages.DeleteWizard_5;
	}
	if (isLinked(getSelectedResources()[0])) {// checked before that
	// this will work
	return RefactoringMessages.DeleteWizard_7;
	}
	return RefactoringMessages.DeleteWizard_8;
	}

	private String createConfirmationStringForManyElements()
	throws ModelException {
	IResource[] resources = getSelectedResources();
	IModelElement[] modelElements = getSelectedScriptElements();
	if (!containsLinkedResources(resources, modelElements))
	return RefactoringMessages.DeleteWizard_9;

	if (!containsLinkedPackagesOrProjectFragments(modelElements))
	return RefactoringMessages.DeleteWizard_10;

	// XXX workaround for jcore bugs - linked packages or source folders
	// cannot be deleted properly
	return RefactoringMessages.DeleteWizard_11;
	}

	private static boolean isLinkedPackageOrProjectFragment(
	IModelElement element) {
	if ((element instanceof IScriptFolder)
	\|\| (element instanceof IProjectFragment)) {
	return isLinkedResource(element);
	}
	return false;
	}

	private static boolean containsLinkedPackagesOrProjectFragments(
	IModelElement[] modelElements) {
	for (int i = 0; i < modelElements.length; i++) {
	IModelElement element = modelElements[i];
	if (isLinkedPackageOrProjectFragment(element))
	return true;
	}
	return false;
	}

	private static boolean containsLinkedResources(IResource[] resources,
	IModelElement[] modelElements) throws ModelException {
	for (int i = 0; i < modelElements.length; i++) {
	IModelElement element = modelElements[i];
	if (isLinkedResource(element))
	return true;
	if (isDefaultPackageWithLinkedFiles(element))
	return true;
	}
	for (int i = 0; i < resources.length; i++) {
	IResource resource = resources[i];
	if (isLinked(resource))
	return true;
	}
	return false;
	}

	private static boolean isDefaultPackageWithLinkedFiles(
	Object firstElement) throws ModelException {
	if (!ModelElementUtil.isDefaultPackage(firstElement))
	return false;
	IScriptFolder defaultPackage = (IScriptFolder) firstElement;
	ISourceModule[] cus = defaultPackage.getSourceModules();
	for (int i = 0; i < cus.length; i++) {
	if (isLinkedResource(cus[i]))
	return true;
	}
	return false;
	}

	private static boolean isLinkedResource(IModelElement element) {
	return isLinked(ReorgUtils.getResource(element));
	}

	private static boolean isLinked(IResource resource) {
	return resource != null && resource.isLinked();
	}

	private IModelElement[] getSelectedScriptElements() {
	return getDeleteProcessor().getScriptElementsToDelete();
	}

	private IResource[] getSelectedResources() {
	return getDeleteProcessor().getResourcesToDelete();
	}

	private ScriptDeleteProcessor getDeleteProcessor() {
	return (ScriptDeleteProcessor) ((DeleteRefactoring) getRefactoring())
	.getProcessor();
	}

	}
	}