Java tutorial
/******************************************************************************* * Copyright (c) 2001, 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.wst.xsd.ui.internal.wizards; import java.lang.reflect.InvocationTargetException; import org.eclipse.core.resources.IFile; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.jface.wizard.IWizardPage; import org.eclipse.jface.wizard.Wizard; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.INewWizard; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.PlatformUI; import org.eclipse.wst.common.ui.internal.viewers.SelectSingleFilePage; import org.eclipse.wst.xsd.ui.internal.editor.XSDEditorPlugin; import org.eclipse.wst.xsd.ui.internal.util.ViewUtility; import org.eclipse.xsd.XSDSchema; import org.eclipse.xsd.util.XSDParser; /** * Extend the base wizard to select a file from the project or outside the workbench * and add error handling */ public class XSDSelectIncludeFileWizard extends Wizard implements INewWizard { boolean isInclude; XSDSchema mainSchema; XSDSchema externalSchema; XSDLocationChoicePage choicePage; XSDSelectSingleFilePage filePage; XSDURLPage urlPage; IFile resultFile; String resultURL; String namespace = ""; public XSDSelectIncludeFileWizard(XSDSchema mainSchema, boolean isInclude, String title, String desc, ViewerFilter filter, IStructuredSelection selection) { super(); setWindowTitle(title); setDefaultPageImageDescriptor(ImageDescriptor.createFromFile(XSDEditorPlugin.class, "icons/NewXSD.png")); setNeedsProgressMonitor(true); // Choice Page choicePage = new XSDLocationChoicePage(); // Select File Page filePage = new XSDSelectSingleFilePage(PlatformUI.getWorkbench(), selection, true); filePage.setTitle(title); filePage.setDescription(desc); filePage.addFilter(filter); // URL Page urlPage = new XSDURLPage(); urlPage.setTitle(title); urlPage.setDescription(XSDEditorPlugin.getXSDString("_UI_FILEDIALOG_SELECT_XML_URL")); this.mainSchema = mainSchema; this.isInclude = isInclude; } public void init(IWorkbench aWorkbench, IStructuredSelection aSelection) { } public void addPages() { addPage(choicePage); addPage(filePage); addPage(urlPage); } public IWizardPage getNextPage(IWizardPage currentPage) { WizardPage nextPage = null; if (currentPage == choicePage) { if (choicePage.isURL()) { nextPage = urlPage; } else { nextPage = filePage; } } return nextPage; } public boolean canFinish() { if (!choicePage.isURL()) { return filePage.isPageComplete(); } return true; } public boolean performFinish() { if (choicePage.isURL()) { try { getContainer().run(false, true, urlPage.getRunnable()); resultURL = urlPage.getURL(); } catch (Exception e) { return false; } return true; } else { resultFile = filePage.getFile(); } return true; } /** * Get the MOF object that represents the external file */ public XSDSchema getExternalSchema() { return externalSchema; } public IFile getResultFile() { return resultFile; } public String getURL() { return resultURL; } public String getNamespace() { return namespace; } /** * Create a MOF model for the imported file */ protected String doLoadExternalModel(IProgressMonitor monitor, String xsdModelFile, String xsdFileName) { String errorMessage = null; String currentNameSpace = mainSchema.getTargetNamespace(); monitor.beginTask("Loading XML Schema", 100); monitor.worked(50); XSDParser parser = new XSDParser(); parser.parse(xsdModelFile); externalSchema = parser.getSchema(); if (externalSchema != null) { String extNamespace = externalSchema.getTargetNamespace(); namespace = extNamespace; if (externalSchema.getDiagnostics() != null && externalSchema.getDiagnostics().size() > 0) { errorMessage = XSDEditorPlugin.getPlugin().getString("_UI_INCORRECT_XML_SCHEMA", xsdFileName); } else { if (isInclude) { // Check the namespace to make sure they are the same as current file if (extNamespace != null) { if (currentNameSpace != null && !extNamespace.equals(currentNameSpace)) { errorMessage = XSDEditorPlugin.getPlugin().getString("_UI_DIFFERENT_NAME_SPACE", xsdFileName); } } } else { // Check the namespace to make sure they are different from the current file if (extNamespace != null) { if (currentNameSpace != null && extNamespace.equals(currentNameSpace)) { errorMessage = XSDEditorPlugin.getPlugin().getString("_UI_SAME_NAME_SPACE", xsdFileName); } } } } } else { errorMessage = XSDEditorPlugin.getPlugin().getString("_UI_INCORRECT_XML_SCHEMA", xsdFileName); } monitor.subTask("Finish Loading"); monitor.worked(80); return errorMessage; } /** * URL page */ class XSDURLPage extends WizardPage { Text urlField; String saveString; public XSDURLPage() { super("URLPage"); } public void createControl(Composite parent) { Composite client = ViewUtility.createComposite(parent, 2); ViewUtility.setComposite(client); ViewUtility.createLabel(client, XSDEditorPlugin.getXSDString("_UI_LABEL_URL")); ViewUtility.createLabel(client, ""); urlField = ViewUtility.createTextField(client, 50); saveString = "http://"; urlField.setText(saveString); setControl(client); } public String getURL() { return urlField.getText(); } private boolean openExternalSchema(IProgressMonitor monitor) { String text = urlField.getText(); // if (text.equals(saveString)) // { // return false; // } // saveString = text; if (text.equals("")) { setErrorMessage(XSDEditorPlugin.getXSDString("_UI_SPECIFY_URL")); return false; } if (!text.startsWith("http://")) { setErrorMessage(XSDEditorPlugin.getXSDString("_UI_URL_START_WITH")); return false; } setErrorMessage(null); String errorMessage = doLoadExternalModel(monitor, text, text); if (errorMessage != null) { setErrorMessage(errorMessage); return false; } else { return true; } } public IRunnableWithProgress getRunnable() { return new IRunnableWithProgress() { public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { if (monitor == null) { monitor = new NullProgressMonitor(); } monitor.beginTask("", 6); boolean ok = openExternalSchema(monitor); if (!ok) { throw new InvocationTargetException(new java.lang.Error()); } monitor.done(); } }; } } /** * Select XML Schema File */ class XSDSelectSingleFilePage extends SelectSingleFilePage { public XSDSelectSingleFilePage(IWorkbench workbench, IStructuredSelection selection, boolean isFileMandatory) { super(workbench, selection, isFileMandatory); } private boolean openExternalSchema() { // Get the fully-qualified file name IFile iFile = getFile(); if (iFile == null) return false; setErrorMessage(null); String xsdModelFile = iFile.getLocationURI().toString(); String xsdFileName = iFile.getName(); String errorMessage = doLoadExternalModel(new NullProgressMonitor(), xsdModelFile, xsdFileName); if (errorMessage != null) { setErrorMessage(errorMessage); return false; } else { return true; } } public boolean isPageComplete() { if (choicePage.isURL()) { return true; } if (super.isPageComplete()) { return openExternalSchema(); } return super.isPageComplete(); } } }