Java tutorial
/******************************************************************************* * Copyright (c) 2011-2012 EclipseSource Muenchen GmbH 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: * Eugen Neufeld - initial API and implementation * *******************************************************************************/ package org.eclipse.emf.ecp.internal.ui.composites; import java.util.List; import org.eclipse.emf.ecp.core.ECPProvider; import org.eclipse.emf.ecp.core.util.ECPProperties; import org.eclipse.emf.ecp.core.util.ECPUtil; import org.eclipse.emf.ecp.internal.ui.Messages; import org.eclipse.emf.ecp.internal.ui.model.ProvidersLabelProvider; import org.eclipse.emf.ecp.spi.ui.CompositeStateObserver; import org.eclipse.emf.ecp.spi.ui.UIProvider; import org.eclipse.emf.ecp.spi.ui.UIProviderRegistry; import org.eclipse.emf.ecp.ui.common.CreateProjectComposite; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.ViewerSorter; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.StackLayout; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; 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.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; /** * This class generates a composite on top of a parent composite containing all ui elements necessary to create an * ecpproject. * * @author Eugen Neufeld * */ public class CreateProjectCompositeImpl implements CreateProjectComposite { /** * Constructor for the Project composite. * * @param providers list of valid providers */ public CreateProjectCompositeImpl(List<ECPProvider> providers) { this.providers = providers; } private CreateProjectChangeListener listener; private final List<ECPProvider> providers; private ECPProvider provider; private String projectName; private StackLayout providerStackLayout; private Composite providerStack; private boolean status; private boolean topStatus; private boolean compositeStatus; private ECPProperties properties; /** {@inheritDoc} **/ @Override public Composite createUI(Composite parent) { final Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); composite.setLayout(new GridLayout(2, false)); ComboViewer providersViewer = null; if (providers.size() > 1) { final Label label = new Label(composite, SWT.NONE); label.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1)); label.setText(Messages.UICreateProject_ProjectProvider + ":");//$NON-NLS-1$ providersViewer = new ComboViewer(composite, SWT.NONE | SWT.READ_ONLY); final Combo combo = providersViewer.getCombo(); final GridData gdCombo = new GridData(SWT.FILL, SWT.BEGINNING, true, false, 1, 1); gdCombo.minimumWidth = 150; combo.setLayoutData(gdCombo); providersViewer.setContentProvider(new ArrayContentProvider()); providersViewer.setLabelProvider(new ProvidersLabelProvider()); providersViewer.setSorter(new ViewerSorter()); providersViewer.setInput(providers); providersViewer.setSelection(new StructuredSelection(providers.get(0))); providersViewer.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { final IStructuredSelection selection = (IStructuredSelection) event.getSelection(); provider = (ECPProvider) selection.getFirstElement(); updateUI(); if (listener != null) { listener.providerChanged(provider); } } }); } provider = providers.get(0); final Label labelName = new Label(composite, SWT.NONE); labelName.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 1, 1)); labelName.setText(Messages.UICreateProject_ProjectName + ":"); //$//$NON-NLS-1$ final Text textProjectName = new Text(composite, SWT.BORDER | SWT.SINGLE); textProjectName.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false, 1, 1)); textProjectName.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent e) { projectName = textProjectName.getText(); if (projectName.equals("")) //$NON-NLS-1$ { projectName = null; } if (projectName == null) { topStatus = false; } else if (ECPUtil.getECPProjectManager().getProject(projectName) != null) { topStatus = false; } else { topStatus = true; } if (listener != null) { listener.projectNameChanged(projectName); } checkComplete(); } }); final Label seperator = new Label(composite, SWT.SEPARATOR | SWT.HORIZONTAL); seperator.setLayoutData(new GridData(SWT.FILL, SWT.BOTTOM, false, false, 2, 2)); providerStackLayout = new StackLayout(); providerStack = new Composite(composite, SWT.NONE); providerStack.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1)); providerStack.setLayout(providerStackLayout); updateUI(); return composite; } private void updateUI() { final UIProvider uiProvider = UIProviderRegistry.INSTANCE.getUIProvider(provider); final Control newProjectUI = uiProvider.createNewProjectUI(providerStack, new CompositeStateObserver() { @Override public void compositeChangedState(Composite caller, boolean complete, ECPProperties projectProperties) { compositeStatus = complete; properties = projectProperties; checkComplete(); } }, ECPUtil.createProperties()); if (newProjectUI != null) { providerStackLayout.topControl = newProjectUI; } else { providerStackLayout.topControl = null; compositeStatus = true; properties = null; checkComplete(); } providerStack.layout(); } private void checkComplete() { if (status != (topStatus && compositeStatus)) { status = !status; if (listener != null) { listener.completeStatusChanged(status); } } } /** {@inheritDoc} **/ @Override public ECPProvider getProvider() { return provider; } /** {@inheritDoc} **/ @Override public String getProjectName() { return projectName; } /** {@inheritDoc} **/ @Override public void setListener(CreateProjectChangeListener listener) { this.listener = listener; if (listener != null) { listener.completeStatusChanged(status); listener.projectNameChanged(projectName); listener.providerChanged(provider); } } /** {@inheritDoc} **/ @Override public ECPProperties getProperties() { return properties == null ? ECPUtil.createProperties() : properties; } /** {@inheritDoc} **/ @Override public void dispose() { } }