Java tutorial
/******************************************************************************* * Copyright 2017 Capital One Services, LLC and Bitwise, Inc. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * http://www.apache.org/licenses/LICENSE-2.0 * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *******************************************************************************/ package hydrograph.ui.menus.importWizards; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.lang.reflect.InvocationTargetException; import javax.xml.bind.JAXBException; import javax.xml.parsers.ParserConfigurationException; import org.apache.commons.lang.StringUtils; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IWorkspace; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Status; import org.eclipse.jface.preference.FileFieldEditor; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.MessageBox; import org.eclipse.ui.dialogs.WizardNewFileCreationPage; import org.slf4j.Logger; import org.xml.sax.SAXException; import hydrograph.ui.engine.exceptions.EngineException; import hydrograph.ui.engine.ui.exceptions.ComponentNotFoundException; import hydrograph.ui.engine.ui.repository.ImportedJobsRepository; import hydrograph.ui.engine.ui.util.UiConverterUtil; import hydrograph.ui.logging.factory.LogFactory; import hydrograph.ui.menus.Activator; import hydrograph.ui.menus.messages.Messages; /** * The Class ImportEngineXmlWizardPage. * <p> * This wizard page provides actual content of the import engine xml window. * * @author Bitwise */ public class ImportEngineXmlWizardPage extends WizardNewFileCreationPage { private static final Logger LOGGER = LogFactory.INSTANCE.getLogger(ImportEngineXmlWizard.class); private FileFieldEditor editor; private static final String JOB_FILE_EXTENTION = "job"; private static final String PARAMETER_FOLDER = "/param/"; private static final String PARAMETER_FILE_EXTENTION = "properties"; private static final String ALLOWED_EXTENSIONS = "*.xml"; private static final String TIMES_NEW_ROMAN_BALTIC_FONT = "Times New Roman Baltic"; private IPath parameterFilePath, jobFilePath; private String targetxmlFilePath; /** * Instantiates a new import engine xml wizard page. * * @param pageName * the page name * @param selection * the selection */ public ImportEngineXmlWizardPage(String pageName, IStructuredSelection selection) { super(pageName, selection); setTitle(pageName); setDescription(Messages.TITLE); } /* * (non-Javadoc) * * @see org.eclipse.ui.dialogs.ImportEngineXmlWizardPage#createAdvancedControls (org.eclipse.swt.widgets.Composite) */ protected void createAdvancedControls(Composite parent) { LOGGER.debug("Creating Import Engine XML layout"); Composite fileSelectionArea = new Composite(parent, SWT.NONE); fileSelectionArea.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL)); GridLayout fileSelectionLayout = new GridLayout(); fileSelectionLayout.makeColumnsEqualWidth = false; fileSelectionLayout.marginWidth = 0; fileSelectionLayout.marginHeight = 0; fileSelectionArea.setLayout(fileSelectionLayout); editor = new FileFieldEditor("fileSelect", Messages.SELECT_FILE_LABEL_TEXT, fileSelectionArea); editor.getTextControl(fileSelectionArea).addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { IPath path = new Path(ImportEngineXmlWizardPage.this.editor.getStringValue()); if (path.segment(0) != null) { targetxmlFilePath = editor.getStringValue(); setFileName(path.lastSegment()); } else { targetxmlFilePath = null; displayError(); } } }); String[] extensions = new String[] { ALLOWED_EXTENSIONS }; // NON-NLS-1 editor.setFileExtensions(extensions); fileSelectionArea.moveAbove(null); Composite fileSelectionArea2 = new Composite(parent, SWT.NONE); fileSelectionArea2.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL)); GridLayout fileSelectionLayout2 = new GridLayout(); fileSelectionLayout2.numColumns = 2; fileSelectionLayout2.makeColumnsEqualWidth = false; fileSelectionLayout2.marginWidth = 0; fileSelectionLayout2.marginHeight = 0; fileSelectionArea2.setLayout(fileSelectionLayout2); Font fontNote = new Font(fileSelectionArea2.getDisplay(), TIMES_NEW_ROMAN_BALTIC_FONT, 9, SWT.BOLD); Label lblNoteHeader = new Label(fileSelectionArea2, SWT.NONE); lblNoteHeader.setText(Messages.NOTE_LABEL_HEADER_TEXT); lblNoteHeader.setFont(fontNote); Label lblNote = new Label(fileSelectionArea2, SWT.NONE); GridData gd_lblNote = new GridData(SWT.BOTTOM, SWT.CENTER, false, false, 1, 1); gd_lblNote.widthHint = 391; lblNote.setLayoutData(gd_lblNote); lblNote.setText(Messages.NOTE_MESSAGE_TEXT); } /* * (non-Javadoc) * * @see org.eclipse.ui.dialogs.ImportEngineXmlWizardPage#createLinkTarget() */ /** * Display error. */ protected void displayError() { setErrorMessage(Messages.SOURCE_EMPTY_ERROR_MESSAGE); setPageComplete(false); } /* * (non-Javadoc) * * @see org.eclipse.ui.dialogs.ImportEngineXmlWizardPage#getInitialContents() */ protected InputStream getInitialContents() { try { return new FileInputStream(new File(editor.getStringValue())); } catch (FileNotFoundException e) { return null; } } /* * (non-Javadoc) * * @see org.eclipse.ui.dialogs.ImportEngineXmlWizardPage#getNewFileLabel() */ protected String getNewFileLabel() { return Messages.NEW_FILE_LABEL_TEXT; // NON-NLS-1 } /* * (non-Javadoc) * * @see org.eclipse.ui.dialogs.ImportEngineXmlWizardPage#validateLinkedResource() */ protected IStatus validateLinkedResource() { return new Status(IStatus.OK, Activator.PLUGIN_ID, IStatus.OK, "", null); } public IFile createNewFile() { LOGGER.debug("Creating new files"); UiConverterUtil uiConverterUtil = new UiConverterUtil(); IFile jobFile = ResourcesPlugin.getWorkspace().getRoot().getFile(jobFilePath); IFile parameterFile = ResourcesPlugin.getWorkspace().getRoot().getFile(parameterFilePath); Object[] containerArray = null; try { containerArray = uiConverterUtil.convertToUiXml(new File(targetxmlFilePath), jobFile, parameterFile, false); LOGGER.debug("Successfully created *job,*properties files in workspace"); } catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException | NoSuchMethodException | SecurityException | EngineException | IOException | ComponentNotFoundException exception) { LOGGER.error("Error occurred while creating new files in workspace", exception); showMessageBox(exception.getMessage(), Messages.EXCEPTION_OCCURED); return null; } catch (JAXBException | ParserConfigurationException | SAXException exception) { LOGGER.error("Error occurred while creating new files in workspace", exception); if (StringUtils.startsWithIgnoreCase(exception.getMessage(), "DOCTYPE is disallowed")) { showMessageBox(null, Messages.EXTERNAL_DTD_NOT_ALLOWED); } else { showMessageBox(exception.getMessage(), Messages.INVALID_TARGET_FILE_ERROR); } return null; } LOGGER.debug("Importing *xml file"); ImportedJobsRepository.INSTANCE.flush(); if (containerArray[1] == null) { return super.createNewFile(); } return (IFile) containerArray[1]; } /* * (non-Javadoc) * * @see org.eclipse.ui.dialogs.WizardNewFileCreationPage#validatePage() */ protected boolean validatePage() { LOGGER.debug("Validating Import Wizard Page"); boolean valid = false; if (targetxmlFilePath == null) { valid = false; displayError(); } else if (super.validatePage()) { valid = true; String fileName = getFileName(); parameterFilePath = createParameterFilePath(fileName); jobFilePath = getContainerFullPath().append(fileName).removeFileExtension() .addFileExtension(JOB_FILE_EXTENTION); if (isFilesAvailable(parameterFilePath)) { setErrorMessage(parameterFilePath + " " + Messages.ALREADY_EXISTS_ERROR_MESSAGE); valid = false; } if (isFilesAvailable(jobFilePath)) { setErrorMessage(jobFilePath + " " + Messages.ALREADY_EXISTS_ERROR_MESSAGE); valid = false; } } return valid; } /** * Checks if is files available. * * @param path * the path * @return true, if is files available */ public boolean isFilesAvailable(IPath path) { LOGGER.debug("Checking file availability at path :{}", path); IWorkspace workspace = ResourcesPlugin.getWorkspace(); return workspace.getRoot().getFile(path).exists(); } @Override public void createControl(Composite parent) { super.createControl(parent); } private IPath createParameterFilePath(String fileName) { LOGGER.debug("Creating parameter file's path for filename :{}", fileName); IPath parameterFilePath = new Path("/" + getContainerFullPath().segment(0)); parameterFilePath = parameterFilePath.append(PARAMETER_FOLDER + fileName); return parameterFilePath.removeFileExtension().addFileExtension(PARAMETER_FILE_EXTENTION); } protected void createLinkTarget() { } private void showMessageBox(String exceptionMessage, String message) { MessageBox messageBox = new MessageBox(Display.getCurrent().getActiveShell(), SWT.ICON_ERROR); if (StringUtils.isNotBlank(exceptionMessage)) { messageBox.setMessage(message + "\n" + exceptionMessage); } else { messageBox.setMessage(message); } messageBox.open(); } }