Java tutorial
/******************************************************************************* * Copyright (c) 2008 Red Hat, Inc. * Distributed under license by Red Hat, Inc. All rights reserved. * This program is 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: * Red Hat, Inc. - initial API and implementation ******************************************************************************/ package org.jboss.tools.smooks.configuration.editors.xml; import java.io.IOException; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.Collections; import java.util.Iterator; import java.util.List; import java.util.Set; import javax.xml.parsers.ParserConfigurationException; import org.eclipse.emf.common.util.URI; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ICheckStateListener; 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.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.xsd.XSDElementDeclaration; import org.jboss.tools.smooks.SmooksModelUtils; import org.jboss.tools.smooks.configuration.editors.utils.SmooksUIUtils; import org.jboss.tools.smooks.templating.model.ModelBuilderException; import org.jboss.tools.smooks.templating.model.xml.XSDModelBuilder; import org.xml.sax.SAXException; /** * @author Dart (dpeng@redhat.com) * */ public class XMLTemplateCreationWizardPage extends AbstractFileSelectionWizardPage { private Throwable parsingError = null; protected Combo createFromDropdown = null; protected CheckboxTableViewer tableViewer = null; protected Label tableViewerLabel; private boolean fireEvent = true; private String rootElementName = null; protected Button loadXSDButton; private TemplateSourceType templateSourceType = TemplateSourceType.xsd; public static enum TemplateSourceType { // Template from XML Schema xsd, // Template from an XML Sample xml } /* * (non-Javadoc) * * @seeorg.jboss.tools.smooks.configuration.editors.xml. * AbstractFileSelectionWizardPage#loadedTheObject(java.lang.String) */ @Override protected Object loadedTheObject(String path) throws Exception { // TODO Auto-generated method stub return null; } public XMLTemplateCreationWizardPage(String pageName) { super(pageName, new String[] { "xsd" }); //$NON-NLS-1$ this.setTitle(Messages.XMLTemplateCreationWizardPage_Page_Title); this.setDescription(Messages.XMLTemplateCreationWizardPage_page_description); this.templateSourceType = TemplateSourceType.xsd; } public TemplateSourceType getTemplateSourceType() { return templateSourceType; } /* * (non-Javadoc) * * @seeorg.jboss.tools.smooks.configuration.editors.xml. * AbstractFileSelectionWizardPage#changeWizardPageStatus() */ @Override protected void changeWizardPageStatus() { super.changeWizardPageStatus(); String errorMessage = this.getErrorMessage(); if (errorMessage == null && templateSourceType == TemplateSourceType.xsd) { if (reasourceLoaded) { if (tableViewer.getCheckedElements() == null || tableViewer.getCheckedElements().length == 0) { errorMessage = Messages.XMLTemplateCreationWizardPage_Error_Must_Select_Root; } } else { errorMessage = Messages.XMLTemplateCreationWizardPage_Error_Must_Click_Load; } if (parsingError != null) { errorMessage = parsingError.getLocalizedMessage(); } setErrorMessage(errorMessage); setPageComplete(errorMessage == null); } } /** * @return the rootElementName */ public String getRootElementName() { return rootElementName; } /** * @param rootElementName * the rootElementName to set */ public void setRootElementName(String rootElementName) { this.rootElementName = rootElementName; } /* * (non-Javadoc) * * @seeorg.jboss.tools.smooks.configuration.editors.xml. * AbstractFileSelectionWizardPage * #createFilePathText(org.eclipse.swt.widgets.Composite) */ @Override protected Text createFilePathText(Composite parent) { fileTextComposite = new Composite(parent, SWT.NONE); GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.grabExcessHorizontalSpace = true; fileTextComposite.setLayoutData(gd); GridLayout xsdtgl = new GridLayout(); xsdtgl.marginWidth = 0; xsdtgl.marginHeight = 0; xsdtgl.numColumns = 2; fileTextComposite.setLayout(xsdtgl); final Text fileText = new Text(fileTextComposite, SWT.BORDER); gd = new GridData(GridData.FILL_HORIZONTAL); fileText.setLayoutData(gd); fileText.addModifyListener(new ModifyListener() { /* * (non-Javadoc) * * @see * org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse. * swt.events.ModifyEvent) */ public void modifyText(ModifyEvent e) { reasourceLoaded = false; if (tableViewer != null) { tableViewer.setInput(Collections.emptyList()); } } }); gd.grabExcessHorizontalSpace = true; loadXSDButton = new Button(fileTextComposite, SWT.NONE); loadXSDButton.setText(Messages.XMLTemplateCreationWizardPage_Button_Load); loadXSDButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { super.widgetSelected(e); parsingError = null; reasourceLoaded = false; if (fileText.getText() == null || fileText.getText().length() == 0) { changeWizardPageStatus(); return; } List<String> list; try { list = loadElement(fileText.getText()); if (list == null || list.isEmpty()) { setErrorMessage(Messages.XMLTemplateCreationWizardPage_XSDParsingError1); } else { tableViewer.setInput(list); reasourceLoaded = true; } } catch (InvocationTargetException e1) { parsingError = e1.getTargetException(); while (parsingError instanceof InvocationTargetException) { parsingError = ((InvocationTargetException) parsingError).getTargetException(); } } catch (IOException e1) { parsingError = e1; } catch (ModelBuilderException e1) { parsingError = e1; } changeWizardPageStatus(); } }); return fileText; } private List<String> loadElement(String path) throws InvocationTargetException, IOException, ModelBuilderException { List<String> elements = new ArrayList<String>(); if (path == null) return null; String pp = path.toLowerCase(); if (pp.endsWith(".wsdl")) { //$NON-NLS-1$ try { List<XSDElementDeclaration> xsdDec = WSDLObjectAnalyzer.loadAllElement(path); for (Iterator<?> iterator = xsdDec.iterator(); iterator.hasNext();) { XSDElementDeclaration xsdElementDeclaration = (XSDElementDeclaration) iterator.next(); elements.add(xsdElementDeclaration.getAliasName()); } } catch (ParserConfigurationException e) { throw new InvocationTargetException(e); } catch (SAXException e) { throw new InvocationTargetException(e); } } String file = null; file = SmooksUIUtils.parseFilePath(path); XSDModelBuilder xsdModelBuilder = new XSDModelBuilder(URI.createFileURI(file)); Set<String> elementNames = xsdModelBuilder.getRootElementNames(); Iterator<String> it = elementNames.iterator(); while (it.hasNext()) { String name = it.next(); elements.add(name); } return elements; } public void createControl(Composite parent) { Composite mainComposite = new Composite(parent, SWT.NONE); GridLayout gl = new GridLayout(); mainComposite.setLayout(gl); GridData gd = new GridData(GridData.FILL_BOTH); mainComposite.setLayoutData(gd); Label fileTypeLabel = new Label(mainComposite, SWT.NONE); fileTypeLabel.setText(Messages.XMLTemplateCreationWizardPage_FileLabel); createFromDropdown = new Combo(mainComposite, SWT.READ_ONLY | SWT.BORDER); gd = new GridData(GridData.FILL_HORIZONTAL); initCombo(createFromDropdown); createFromDropdown.setLayoutData(gd); createFromDropdown.select(0); createFromDropdown.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { updateTemplateSourceType(); } }); Label separator = new Label(mainComposite, SWT.SEPARATOR | SWT.HORIZONTAL); separator.setLayoutData(gd); super.createControl(mainComposite); mainComposite = (Composite) getControl(); gd = new GridData(GridData.FILL_HORIZONTAL); tableViewerLabel = new Label(mainComposite, SWT.NONE); tableViewerLabel.setLayoutData(gd); tableViewerLabel.setText(Messages.XMLTemplateCreationWizardPage_Label_Select_Root); tableViewer = CheckboxTableViewer.newCheckList(mainComposite, SWT.BORDER); gd = new GridData(GridData.FILL_BOTH); gd.heightHint = 250; tableViewer.getControl().setLayoutData(gd); tableViewer.setContentProvider(new XSDListContentProvider()); tableViewer.setLabelProvider(new XSDListLabelProvider()); tableViewer.addCheckStateListener(new ICheckStateListener() { /* * (non-Javadoc) * * @see * org.eclipse.jface.viewers.ICheckStateListener#checkStateChanged * (org.eclipse.jface.viewers.CheckStateChangedEvent) */ public void checkStateChanged(CheckStateChangedEvent event) { if (!fireEvent) return; rootElementName = null; fireEvent = false; tableViewer.setAllChecked(false); if (event.getChecked()) { tableViewer.setChecked(event.getElement(), true); Object checkElement = event.getElement(); if (checkElement instanceof String) { rootElementName = (String) checkElement; } } fireEvent = true; changeWizardPageStatus(); } }); this.setControl(mainComposite); } public Combo getCombo() { return createFromDropdown; } protected void updateTemplateSourceType() { switch (createFromDropdown.getSelectionIndex()) { case 0: templateSourceType = TemplateSourceType.xsd; break; case 1: templateSourceType = TemplateSourceType.xml; break; default: throw new IllegalStateException(Messages.XMLTemplateCreationWizardPage_XMLTemplateLoadError); } // Table should only be visible for XSD template sources... tableViewer.getTable().setVisible(templateSourceType == TemplateSourceType.xsd); tableViewerLabel.setVisible(templateSourceType == TemplateSourceType.xsd); loadXSDButton.setEnabled(templateSourceType == TemplateSourceType.xsd); // Reset the file browse filter... setFileExtensionNames(new String[] { templateSourceType.toString() }); } private void initCombo(Combo combo2) { combo2.add(Messages.XMLTemplateCreationWizardPage_XSDType); combo2.add(Messages.XMLTemplateCreationWizardPage_XMLSampleType); } public String getInputType() { if (createFromDropdown.getSelectionIndex() == 0) { return SmooksModelUtils.KEY_XML_FILE_TYPE_XSD; } if (createFromDropdown.getSelectionIndex() == 1) { return SmooksModelUtils.KEY_XML_FILE_TYPE_XML; } return null; } }