Java tutorial
/** * Copyright 2004-2014 Riccardo Solmi. All rights reserved. * This file is part of the Whole Platform. * * The Whole Platform is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * The Whole Platform is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with the Whole Platform. If not, see <http://www.gnu.org/licenses/>. */ package org.whole.lang.ui.wizards; import static org.whole.lang.ui.util.ResourceUtils.defineResourceBindings; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import org.eclipse.core.resources.IFile; import org.eclipse.core.runtime.IPath; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.IWorkbenchWindow; import org.eclipse.ui.dialogs.WizardNewFileCreationPage; import org.eclipse.ui.ide.IDE; import org.whole.lang.codebase.IPersistenceKit; import org.whole.lang.codebase.IPersistenceProvider; import org.whole.lang.codebase.StringPersistenceProvider; import org.whole.lang.e4.ui.E4CompatibilityPlugin; import org.whole.lang.model.IEntity; import org.whole.lang.reflect.ILanguageKit; import org.whole.lang.reflect.ReflectionFactory; import org.whole.lang.resources.IResourceRegistry; import org.whole.lang.templates.ITemplateManager; import org.whole.lang.util.ResourceUtils; import org.whole.lang.util.StringUtils; /** * @author Riccardo Solmi */ public class WholeModelWizardPage1 extends WizardNewFileCreationPage { private List<ILanguageKit> languageKits; private ITemplateManager templateFactory; private String[] templates; private List<IPersistenceKit> persistenceKits; private IWorkbench workbench; private static int exampleCount = 1; private Combo languageCombo; private Combo templateCombo; private Combo saveAsCombo; public WholeModelWizardPage1(IWorkbench aWorkbench, IStructuredSelection selection) { super("sampleModelPage1", selection); this.setTitle("Whole Model"); this.setDescription("Create a new Whole Model"); this.setImageDescriptor(ImageDescriptor.createFromFile(E4CompatibilityPlugin.class, "images/banner.png")); this.workbench = aWorkbench; } public void createControl(Composite parent) { super.createControl(parent); Composite composite = (Composite) getControl(); Group group = new Group(composite, SWT.NONE); group.setLayout(new GridLayout()); group.setText("Choose options"); group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); GridLayout gridLayout = new GridLayout(); gridLayout.numColumns = 2; group.setLayout(gridLayout); new Label(group, SWT.LEFT).setText("Language:"); languageCombo = new Combo(group, SWT.DROP_DOWN | SWT.READ_ONLY); languageCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); new Label(group, SWT.LEFT).setText("Template:"); templateCombo = new Combo(group, SWT.DROP_DOWN | SWT.READ_ONLY); templateCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); new Label(group, SWT.LEFT).setText("Save As:"); saveAsCombo = new Combo(group, SWT.DROP_DOWN | SWT.READ_ONLY); saveAsCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); IResourceRegistry<ILanguageKit> registry = ReflectionFactory.getLanguageKitRegistry(); languageKits = new ArrayList<ILanguageKit>(registry.getResources(false, ResourceUtils.SIMPLE_COMPARATOR)); for (ILanguageKit languageKit : languageKits) languageCombo.add(ResourceUtils.SIMPLE_NAME_PROVIDER.toString(registry, languageKit)); languageCombo.addSelectionListener(new SelectionListener() { public void widgetDefaultSelected(SelectionEvent e) { } public void widgetSelected(SelectionEvent e) { ILanguageKit languageKit = languageKits.get(languageCombo.getSelectionIndex()); fireLanguageSelected(languageKit); } }); languageCombo.select(0); ILanguageKit languageKit = languageKits.get(0); fireLanguageSelected(languageKit); saveAsCombo.addSelectionListener(new SelectionListener() { public void widgetDefaultSelected(SelectionEvent e) { } public void widgetSelected(SelectionEvent e) { String name = getFileName(); name = StringUtils.replaceExtension(name, getPersistenceKit(saveAsCombo).getFileExtension()); //TODO mediated by languageKit setFileName(name); } }); setPageComplete(validatePage()); } protected void fireLanguageSelected(ILanguageKit languageKit) { setFileName("ModelExample" + exampleCount + "." + languageKit.getDefaultFileExtension()); templateFactory = languageKit.getTemplateManager(); templates = templateFactory.names().toArray(new String[0]); templateCombo.setItems(templates); templateCombo.select(0); persistenceKits = new ArrayList<IPersistenceKit>(languageKit.getPersistenceKits()); saveAsCombo.setItems(new String[0]); for (IPersistenceKit persistenceKit : persistenceKits) saveAsCombo.add(persistenceKit.getDescription()); int selectionIndex = persistenceKits.indexOf(languageKit.getDefaultPersistenceKit()); saveAsCombo.select(selectionIndex); } protected IFile fileHandle; protected IFile createFileHandle(IPath filePath) { return fileHandle = super.createFileHandle(filePath); } protected IPersistenceKit persistenceKit; protected InputStream getInitialContents() { IEntity model = templateFactory.create(templates[templateCombo.getSelectionIndex()]); persistenceKit = getPersistenceKit(saveAsCombo); try { IPersistenceProvider pp = new StringPersistenceProvider(); defineResourceBindings(pp.getBindings(), fileHandle); persistenceKit.writeModel(model, pp); return pp.openInputStream(); } catch (Exception e) { throw new IllegalStateException("error writing file contents", e); } } private IPersistenceKit getPersistenceKit(Combo saveAsCombo) { return persistenceKits.get(saveAsCombo.getSelectionIndex()); } public boolean finish() { try { IFile newFile = createNewFile(); String editorID = ReflectionFactory.getEditorIdFromPersistenceKit(persistenceKit); IDE.setDefaultEditor(newFile, editorID); IWorkbenchWindow window = workbench.getActiveWorkbenchWindow(); IWorkbenchPage page = window.getActivePage(); IDE.openEditor(page, newFile, true); exampleCount++; return true; } catch (Exception e) { E4CompatibilityPlugin.reportError(getShell(), "Create model error", "Unable to create a new model.", e); return false; } } }