Java tutorial
/******************************************************************************* * Copyright (c) 2012 VMware, Inc. * 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: * VMware, Inc. - initial API and implementation *******************************************************************************/ package org.springframework.ide.eclipse.wizard.ui; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Status; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IPackageFragment; import org.eclipse.jdt.core.IPackageFragmentRoot; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.internal.ui.wizards.NewClassCreationWizard; import org.eclipse.jdt.ui.IJavaElementSearchConstants; import org.eclipse.jdt.ui.JavaUI; import org.eclipse.jdt.ui.wizards.NewClassWizardPage; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.fieldassist.TextContentAdapter; import org.eclipse.jface.window.Window; import org.eclipse.jface.wizard.WizardDialog; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; 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; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.dialogs.SelectionDialog; import org.eclipse.ui.forms.events.HyperlinkAdapter; import org.eclipse.ui.forms.events.HyperlinkEvent; import org.eclipse.ui.forms.widgets.Hyperlink; import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement; import org.springframework.ide.eclipse.beans.core.BeansCoreUtils; import org.springframework.ide.eclipse.config.core.contentassist.XmlBackedContentProposalAdapter; import org.springframework.ide.eclipse.config.core.contentassist.XmlBackedContentProposalProvider; import org.springframework.ide.eclipse.config.core.schemas.BeansSchemaConstants; import org.springframework.ide.eclipse.core.StringUtils; import org.springframework.ide.eclipse.quickfix.ContentAssistProposalWrapper; import org.springframework.ide.eclipse.wizard.Messages; import org.springframework.ide.eclipse.wizard.WizardPlugin; import org.springframework.ide.eclipse.wizard.core.WizardBeanReferenceContentProposalProvider; import org.springframework.ide.eclipse.wizard.core.WizardClassContentProposalProvider; import org.springframework.ide.eclipse.wizard.core.WizardContentAssistConverter; import org.springsource.ide.eclipse.commons.core.StatusHandler; import org.w3c.dom.Attr; import org.w3c.dom.Document; /** * Wizard page for creating or modifying a bean definition * @author Terry Denney * @author Leo Dos Santos * @author Christian Dupuis * @since 2.0 */ @SuppressWarnings("restriction") public class BeanWizardPage extends AbstractBeanWizardPage { private Label idLabel, nameLabel, parentLabel; private Hyperlink classLink; private Text idText, nameText, classText, parentText, fileText; private Button ignoreErrorButton, fileBrowseButton; private static final String DEFAULT_MESSAGE = Messages.getString("NewBeanWizardPage.TITLE_DESCRIPTION"); //$NON-NLS-1$ private String fileErrorMessage, classErrorMessage, parentErrorMessage; private final Set<XmlBackedContentProposalAdapter> contentProposalAdapters; private WizardClassContentProposalProvider classProposalProvider; private WizardBeanReferenceContentProposalProvider parentProposalProvider; private final boolean fileBrowsingEnabled; public BeanWizardPage(String pageName, BeanWizard wizard, boolean fileBrowsingEnabled) { super(pageName, wizard); setTitle(Messages.getString("NewBeanWizardPage.TITLE")); //$NON-NLS-1$ if (wizard.getBeanFile() == null) { setDescription(Messages.getString("NewBeanWizardPage.ENTER_BEAN_FILE")); //$NON-NLS-1$ } else { setDescription(DEFAULT_MESSAGE); } this.wizard = wizard; this.fileBrowsingEnabled = fileBrowsingEnabled; this.contentProposalAdapters = new HashSet<XmlBackedContentProposalAdapter>(); } private void addListener(final Text text, final String attributeName) { text.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { updateAttribute(attributeName, text.getText()); } }); } @Override public boolean canFlipToNextPage() { return wizard.getBeanFile() != null && (BeanWizard.getIgnoreError() || classText.getText().length() > 0 || parentText.getText().length() > 0); } private void createAttribute(String attributeName, Hyperlink link, Text text) { link.setText(getDisplayText(attributeName) + ":"); //$NON-NLS-1$ link.setUnderlined(true); link.setLayoutData(new GridData()); link.addHyperlinkListener(new HyperlinkAdapter() { @Override public void linkActivated(HyperlinkEvent e) { IProject project = BeanWizardPage.this.wizard.getBeanFile().getProject(); String className = classText.getText(); try { if (project.hasNature(JavaCore.NATURE_ID)) { IJavaProject javaProject = JavaCore.create(project); IJavaElement result = null; if (className.length() > 0) { result = javaProject.findType(className); } if (result != null) { JavaUI.openInEditor(result); return; } NewClassWizardPage page = new NewClassWizardPage(); int index = className.lastIndexOf("."); if (index > 0) { String packageName = className.substring(0, index); className = className.substring(index + 1); IPackageFragment[] packageFragments = javaProject.getPackageFragments(); for (IPackageFragment packageFragment : packageFragments) { if (packageFragment.getElementName().equals(packageName)) { page.setPackageFragment(packageFragment, true); IPackageFragmentRoot[] packageFragmentRoots = javaProject .getAllPackageFragmentRoots(); for (IPackageFragmentRoot packageFragmentRoot : packageFragmentRoots) { if (packageFragmentRoot.getPath().isPrefixOf(packageFragment.getPath())) { page.setPackageFragmentRoot(packageFragmentRoot, true); break; } } break; } } } page.setTypeName(className, false); NewClassCreationWizard wizard = new NewClassCreationWizard(page, true); IWorkbench workbench = PlatformUI.getWorkbench(); wizard.init(workbench, null); Shell shell = workbench.getActiveWorkbenchWindow().getShell(); WizardDialog dialog = new WizardDialog(shell, wizard); dialog.create(); dialog.getShell().setText("New Class"); dialog.setBlockOnOpen(true); if (dialog.open() == Window.OK) { validateAttribute(BeansSchemaConstants.ATTR_CLASS, className); } } } catch (CoreException ex) { } } }); createAttrbute(attributeName, text); } private void createAttribute(String attributeName, Label label, Text text) { label.setText(getDisplayText(attributeName) + ":"); //$NON-NLS-1$ label.setLayoutData(new GridData()); createAttrbute(attributeName, text); } private void createAttrbute(String attributeName, Text text) { text.setEditable(true); text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); IDOMElement newBean = wizard.getNewBean(); String attributeValue = null; if (newBean != null) { attributeValue = newBean.getAttribute(attributeName); } if (attributeValue != null) { text.setText(attributeValue); } XmlBackedContentProposalProvider proposalProvider = null; IFile beanFile = wizard.getBeanFile(); Document originalDocument = wizard.getOriginalDocument(); if (attributeName.equals(BeansSchemaConstants.ATTR_CLASS)) { classProposalProvider = new WizardClassContentProposalProvider(newBean, attributeName, beanFile, originalDocument); proposalProvider = classProposalProvider; } else if (attributeName.equals(BeansSchemaConstants.ATTR_PARENT)) { parentProposalProvider = new WizardBeanReferenceContentProposalProvider(newBean, attributeName, beanFile, originalDocument); proposalProvider = parentProposalProvider; } if (proposalProvider != null) { contentProposalAdapters .add(new XmlBackedContentProposalAdapter(text, new TextContentAdapter(), proposalProvider)); } addListener(text, attributeName); } public void createControl(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setLayout(new GridLayout()); composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); createFileComposite(composite); Composite container = new Composite(composite, SWT.NONE); container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); GridLayout layout = new GridLayout(2, false); layout.horizontalSpacing = 10; container.setLayout(layout); idLabel = new Label(container, SWT.NONE); idText = new Text(container, SWT.BORDER); createAttribute(BeansSchemaConstants.ATTR_ID, idLabel, idText); nameLabel = new Label(container, SWT.NONE); nameText = new Text(container, SWT.BORDER); createAttribute(BeansSchemaConstants.ATTR_NAME, nameLabel, nameText); classLink = new Hyperlink(container, SWT.UNDERLINE_LINK); Composite classContainer = new Composite(container, SWT.NONE); GridLayout classContainerLayout = new GridLayout(2, false); classContainer.setLayout(classContainerLayout); classContainerLayout.marginHeight = 0; classContainerLayout.marginWidth = 0; classContainer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); classText = new Text(classContainer, SWT.BORDER); createAttribute(BeansSchemaConstants.ATTR_CLASS, classLink, classText); Button browseButton = new Button(classContainer, SWT.NONE); browseButton.setText(Messages.getString("NewBeanWizardPage.BROWSE_BUTTON_LABEL")); //$NON-NLS-1$ browseButton.setLayoutData(new GridData()); browseButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { String filter = classText.getText(); if (filter == null) { filter = ""; //$NON-NLS-1$ } filter = filter.replace('$', '.'); try { int scope = IJavaElementSearchConstants.CONSIDER_CLASSES; SelectionDialog dialog = JavaUI.createTypeDialog(getShell(), PlatformUI.getWorkbench().getProgressService(), null, scope, false, filter); dialog.setTitle(Messages.getString("NewBeanWizardPage.SELECT_TYPE_DIALOG_TITLE")); //$NON-NLS-1$ if (dialog.open() == Window.OK) { IType type = (IType) dialog.getResult()[0]; String newValue = type.getFullyQualifiedName('$'); classText.setText(newValue); updateAttribute(BeansSchemaConstants.ATTR_CLASS, newValue); } } catch (JavaModelException ex) { StatusHandler .log(new Status(IStatus.ERROR, WizardPlugin.PLUGIN_ID, "Failed to select type.", ex)); } } }); parentLabel = new Label(container, SWT.NONE); parentText = new Text(container, SWT.BORDER); createAttribute(BeansSchemaConstants.ATTR_PARENT, parentLabel, parentText); Composite buttonComposite = new Composite(container, SWT.NONE); GridLayout buttonCompositeLayout = new GridLayout(); buttonCompositeLayout.marginWidth = 0; buttonCompositeLayout.marginHeight = 0; buttonComposite.setLayout(buttonCompositeLayout); GridData buttonCompositeData = new GridData(SWT.FILL, SWT.FILL, true, false); buttonCompositeData.horizontalSpan = 2; buttonComposite.setLayoutData(buttonCompositeData); ignoreErrorButton = wizard.createIgnoreErrorButton(buttonComposite, this); ignoreErrorButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { getWizard().getContainer().updateButtons(); updateMessage(); } }); updateFieldsEnablement(); setControl(composite); } private void createFileComposite(Composite parent) { Composite fileComposite = new Composite(parent, SWT.NONE); fileComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); GridLayout compositeLayout = new GridLayout(2, false); compositeLayout.marginBottom = 10; fileComposite.setLayout(compositeLayout); Label fileLabel = new Label(fileComposite, SWT.NONE); fileLabel.setText(Messages.getString("NewBeanWizardPage.BEAN_FILE_LABEL")); //$NON-NLS-1$ GridData labelData = new GridData(SWT.FILL, SWT.FILL, false, false); labelData.horizontalSpan = 2; fileLabel.setLayoutData(labelData); fileText = new Text(fileComposite, SWT.BORDER); fileText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); fileText.setEditable(true); IFile beanFile = wizard.getBeanFile(); if (beanFile != null) { fileText.setText(beanFile.getFullPath().toOSString()); } fileText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { String filePath = fileText.getText(); if (filePath.length() == 0) { fileErrorMessage = Messages.getString("NewBeanWizardPage.EMPTY_BEAN_FILE"); //$NON-NLS-1$ } else { IResource resource = ResourcesPlugin.getWorkspace().getRoot().findMember(new Path(filePath)); validateFile(resource); } } }); fileBrowseButton = new Button(fileComposite, SWT.PUSH); fileBrowseButton.setText(Messages.getString("NewBeanWizardPage.BROWSE_BEAN_FILE")); //$NON-NLS-1$ fileBrowseButton.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false)); fileBrowseButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { BeanFileSelectionDialog dialog = new BeanFileSelectionDialog(getShell(), false, ResourcesPlugin.getWorkspace().getRoot(), IResource.FILE); dialog.setTitle(Messages.getString("NewBeanWizardPage.BEAN_SELECTION_DIALOG_TITLE")); //$NON-NLS-1$ int status = dialog.open(); if (status == Dialog.OK) { Object selection = dialog.getFirstResult(); if (selection != null && selection instanceof IFile) { IFile beanFile = (IFile) selection; fileText.setText(beanFile.getFullPath().toOSString()); validateFile(beanFile); } } } }); fileText.setEnabled(fileBrowsingEnabled); fileBrowseButton.setEnabled(fileBrowsingEnabled); } public String getClassName() { return getInputText(classText); } private String getDisplayText(String attributeName) { return StringUtils.capitalize(attributeName); } public String getId() { return getInputText(idText); } private String getInputText(Text text) { if (text != null) { String inputText = text.getText(); if (inputText != null) { return inputText; } } return ""; //$NON-NLS-1$ } @Override public String getName() { return getInputText(nameText); } @Override public boolean isPageComplete() { if (wizard.getBeanFile() == null) { return false; } if (getErrorMessage() != null && !BeanWizard.getIgnoreError()) { return false; } return super.isPageComplete(); } private void updateAttribute(String attributeName, String value) { IDOMElement newBean = wizard.getNewBean(); if (value.length() > 0) { if (newBean.getAttributeNode(attributeName) != null) { newBean.setAttribute(attributeName, value); } else { List<Attr> attributes = new ArrayList<Attr>(); boolean found = false; for (String currAttributeName : BeanWizard.ATTRIBUTES) { if (currAttributeName == attributeName) { found = true; } else if (found) { Attr attributeNode = newBean.getAttributeNode(currAttributeName); if (attributeNode != null) { attributes.add(attributeNode); newBean.removeAttributeNode(attributeNode); } } } newBean.setAttribute(attributeName, value); for (Attr attribute : attributes) { newBean.setAttributeNode(attribute); } } } else { newBean.removeAttribute(attributeName); } validateAttribute(attributeName, value); } private void updateFieldsEnablement() { boolean enabled = fileErrorMessage == null && wizard.getBeanFile() != null; idText.setEnabled(enabled); nameText.setEnabled(enabled); classText.setEnabled(enabled); parentText.setEnabled(enabled); ignoreErrorButton.setEnabled(enabled); } @Override public void updateMessage() { if (fileErrorMessage != null) { setDialogMessage(fileErrorMessage, false); } else if (classErrorMessage != null) { setDialogMessage(classErrorMessage, true); } else if (parentErrorMessage != null) { setDialogMessage(parentErrorMessage, true); } else { setMessage(DEFAULT_MESSAGE); } getWizard().getContainer().updateButtons(); } private void validateAttribute(String attributeName, String value) { IDOMElement newBean = wizard.getNewBean(); WizardContentAssistConverter contentAssistConverter = new WizardContentAssistConverter(newBean, newBean.getAttributeNode(attributeName), wizard.getBeanFile(), wizard.getOriginalDocument()); if (attributeName.equals(BeansSchemaConstants.ATTR_CLASS)) { if (value.length() > 0) { Set<ContentAssistProposalWrapper> classAttributeProposals = contentAssistConverter .getClassAttributeProposals(value, true); if (classAttributeProposals.isEmpty()) { classErrorMessage = Messages.getString("NewBeanWizardPage.UNKNOW_CLASS_MESSAGE"); //$NON-NLS-1$ } else { classErrorMessage = null; } } else { classErrorMessage = null; } } else if (attributeName.equals(BeansSchemaConstants.ATTR_PARENT)) { if (value.length() > 0) { Set<ContentAssistProposalWrapper> referenceableBeanDescriptions = contentAssistConverter .getReferenceableBeanDescriptions(value, true); if (referenceableBeanDescriptions.isEmpty()) { parentErrorMessage = Messages.getString("NewBeanWizardPage.UNKNOWN_PARENT_MESSAGE"); //$NON-NLS-1$ } else { parentErrorMessage = null; } } else { parentErrorMessage = null; } } updateMessage(); } private void validateFields() { validateAttribute(BeansSchemaConstants.ATTR_CLASS, classText.getText()); validateAttribute(BeansSchemaConstants.ATTR_PARENT, parentText.getText()); } private void validateFile(IResource beanFile) { if (beanFile != null && BeansCoreUtils.isBeansConfig(beanFile)) { wizard.setBeanFile((IFile) beanFile); fileErrorMessage = null; validateFields(); classProposalProvider.setFile((IFile) beanFile); parentProposalProvider.setFile((IFile) beanFile); classProposalProvider.setDocument(wizard.getOriginalDocument()); parentProposalProvider.setDocument(wizard.getOriginalDocument()); for (XmlBackedContentProposalAdapter contentProposalAdapter : contentProposalAdapters) { contentProposalAdapter.update(wizard.getNewBean()); } } else { fileErrorMessage = Messages.getString("NewBeanWizardPage.BEAN_FILE_ERROR"); //$NON-NLS-1$ } updateMessage(); updateFieldsEnablement(); } }