Java tutorial
/******************************************************************************* * Copyright (c) 2013-2015 UAH Space Research Group. * 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: * MICOBS SRG Team - Initial API and implementation ******************************************************************************/ package es.uah.aut.srg.micobs.mesp.ui.wizards; import java.util.Collection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.window.Window; 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; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.dialogs.ElementListSelectionDialog; import es.uah.aut.srg.micobs.common.MCommonPackage; import es.uah.aut.srg.micobs.common.MCommonPackageElement; import es.uah.aut.srg.micobs.mesp.mespctool.MConstructionTool; import es.uah.aut.srg.micobs.mesp.util.impl.MESPStringHelper; import es.uah.aut.srg.micobs.system.MLanguage; /** * A version of the MESP project creation page that provides the selection of * a referencing element. * */ public class ReferencingMESPProjectCreationPage extends MESPProjectCreationPage { protected Collection<MCommonPackageElement> elements = null; protected MCommonPackageElement selectedElement = null; protected Text elementText; protected Button elementSelectionButton; private String elementLabel = "Element:"; private String elementDialogTitle = "Element Selection"; private String elementDialogMessage = "Select the attached element:"; private String elementErrorMessage = "An element must be selected"; private String elementButtonLabel = "Select element"; /** * Returns the element selection button label. * @return the element selection button label. */ public String getElementButtonLabel() { return elementButtonLabel; } /** * Sets the label of the element selection button. * @param elementButtonLabel the new label for the element selection * button. */ public void setElementButtonLabel(String elementButtonLabel) { this.elementButtonLabel = elementButtonLabel; } /** * Returns the element label text. * @return the element label text. */ public String getElementLabel() { return elementLabel; } /** * Sets the element label text. * @param elementLabel the new element label text. */ public void setElementLabel(String elementLabel) { this.elementLabel = elementLabel; } /** * Returns the title of the element selection dialog. * @return the title of the element selection dialog. */ public String getElementDialogTitle() { return elementDialogTitle; } /** * Sets the title of the element selection dialog. * @param elementDialogTitle the new title of the element * selection dialog. */ public void setElementDialogTitle(String elementDialogTitle) { this.elementDialogTitle = elementDialogTitle; } /** * Returns the message of the element selection dialog. * @return the message of the element selection dialog. */ public String getElementDialogMessage() { return elementDialogMessage; } /** * Sets the new message of the element selection dialog. * @param elementDialogMessage the new message of the element * selection dialog. */ public void setElementDialogMessage(String elementDialogMessage) { this.elementDialogMessage = elementDialogMessage; } /** * Returns the error message to show if an element was not selected. * * @return the error message to show if an element was not selected. */ public String getElementErrorMessage() { return elementErrorMessage; } /** * Sets the error message to show if an element was not selected. * @param elementErrorMessage the new error message. */ public void setElementErrorMessage(String elementErrorMessage) { this.elementErrorMessage = elementErrorMessage; } public ReferencingMESPProjectCreationPage(String pageName, IStructuredSelection selection, Collection<MLanguage> languages, Collection<MCommonPackage> packages, Collection<MConstructionTool> constructionTools, Collection<MCommonPackageElement> elements) { super(pageName, selection, languages, packages, constructionTools); this.elements = elements; } @Override protected void createExtraParameters(Composite parent) { super.createExtraParameters(parent); createElementSelection(parent); } /** * Creates the element selection controls. * @param composite the composite where the controls will be located,. */ private void createElementSelection(Composite composite) { Composite subComposite = new Composite(composite, SWT.NONE); subComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); GridLayout layout = new GridLayout(3, false); subComposite.setLayout(layout); Label label = new Label(subComposite, SWT.NONE); label.setText(elementLabel); elementText = new Text(subComposite, SWT.BORDER); elementText.setEditable(false); elementText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); elementSelectionButton = new Button(subComposite, SWT.PUSH); elementSelectionButton.setText(elementButtonLabel); elementSelectionButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { handleElementSelectionButton(); } }); if (elements.size() <= 0) { elementSelectionButton.setEnabled(false); } } /** * Handles the element selection button. */ private void handleElementSelectionButton() { ElementListSelectionDialog dialog = new ElementListSelectionDialog(elementSelectionButton.getShell(), new LabelProvider() { @Override public String getText(Object element) { if (element instanceof MCommonPackageElement) { return MESPStringHelper.getDefault() .getFullElementName((MCommonPackageElement) element); } return super.getText(element); } }); dialog.setTitle(elementDialogTitle); dialog.setMessage(elementDialogMessage); dialog.setElements(elements.toArray()); dialog.setMultipleSelection(false); // User pressed cancel if (dialog.open() == Window.OK) { Object[] result = dialog.getResult(); if (result.length == 1) { selectedElement = (MCommonPackageElement) result[0]; elementText.setText(MESPStringHelper.getDefault().getFullElementName(selectedElement)); } else { selectedElement = null; elementText.setText(""); } } boolean valid = validatePage(); setPageComplete(valid); } @Override protected boolean validateExtraParameters() { if (super.validateExtraParameters() == false) { return false; } if (selectedElement == null) { setErrorMessage(elementErrorMessage); return false; } else { setErrorMessage(null); setMessage(null); return true; } } /** * Returns the selected element. * @return the selected element. */ public MCommonPackageElement getSelectedElement() { return this.selectedElement; } }