Java tutorial
/******************************************************************************* * Copyright (c) 2010, 2011 SAP AG 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: * Kaloyan Raev (SAP AG) - initial API and implementation *******************************************************************************/ package org.eclipse.libra.facet.ui.wizards; import static org.eclipse.libra.facet.OSGiBundleFacetUtils.isOSGiBundle; import java.util.Arrays; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.observable.set.IObservableSet; import org.eclipse.core.databinding.observable.set.WritableSet; import org.eclipse.core.databinding.observable.value.ComputedValue; import org.eclipse.core.databinding.validation.MultiValidator; import org.eclipse.core.databinding.validation.ValidationStatus; import org.eclipse.core.resources.IProject; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IStatus; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.databinding.viewers.ViewersObservables; import org.eclipse.jface.databinding.wizard.WizardPageSupport; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.libra.facet.internal.ui.LibraFacetUIPlugin; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.ui.model.WorkbenchLabelProvider; import org.eclipse.wst.common.componentcore.ComponentCore; import org.eclipse.wst.common.componentcore.resources.IVirtualComponent; import org.eclipse.wst.common.componentcore.resources.IVirtualReference; public class ConvertProjectsToBundlesWizardPage extends WizardPage { private class SelectionValidator extends MultiValidator { @Override protected IStatus validate() { if (fSelected.size() == 0) { return ValidationStatus.cancel(getDescription()); } else if (missingReferences()) { return ValidationStatus .warning(Messages.ConvertProjectsToBundlesWizardPage_ReferencedProjectsNotSelected); } return ValidationStatus.ok(); } private boolean missingReferences() { IProject[] selectedProjects = getProjects(); for (IProject project : selectedProjects) { IVirtualComponent component = ComponentCore.createComponent(project); if (component != null) { IVirtualReference[] references = component.getReferences(); for (IVirtualReference ref : references) { IProject refProject = ref.getReferencedComponent().getProject(); try { if (refProject != null && refProject != project && !isOSGiBundle(refProject) && !fSelected.contains(refProject)) { return true; } } catch (CoreException e) { LibraFacetUIPlugin.logError(e); // do nothing - check the next reference } } } } ; return false; } }; private IObservableSet fUnconverted; private IObservableSet fSelected; public ConvertProjectsToBundlesWizardPage(IProject[] unconverted, IProject[] selected) { super("converToWAB"); //$NON-NLS-1$ setTitle(Messages.ConvertProjectsToBundlesWizardPage_Title); setDescription(Messages.ConvertProjectsToBundlesWizardPage_Description); this.fUnconverted = new WritableSet(Arrays.asList(unconverted), IProject.class); this.fSelected = new WritableSet(Arrays.asList(selected), IProject.class); } public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NONE); createProjectsViewer(container); setControl(container); GridLayoutFactory.swtDefaults().margins(5, 0).numColumns(2).generateLayout(container); Dialog.applyDialogFont(container); // PlatformUI.getWorkbench().getHelpSystem().setHelp(container, "org.eclipse.libra.convertToWAB"); } public IProject[] getProjects() { return (IProject[]) fSelected.toArray(new IProject[fSelected.size()]); } private void createProjectsViewer(Composite parent) { DataBindingContext dbc = new DataBindingContext(); WizardPageSupport.create(this, dbc); Label projectsLabel = new Label(parent, SWT.NONE); projectsLabel.setText(Messages.ConvertProjectsToBundlesWizardPage_AvailableProjects); GridDataFactory.swtDefaults().span(2, 1).applyTo(projectsLabel); final CheckboxTableViewer projectsViewer = CheckboxTableViewer.newCheckList(parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL); GridDataFactory.fillDefaults().grab(true, true).applyTo(projectsViewer.getControl()); projectsViewer.setLabelProvider(new WorkbenchLabelProvider()); projectsViewer.setContentProvider(new ArrayContentProvider()); projectsViewer.setInput(fUnconverted); projectsViewer.setComparator(new ViewerComparator()); dbc.bindSet(ViewersObservables.observeCheckedElements(projectsViewer, IProject.class), fSelected); dbc.addValidationStatusProvider(new SelectionValidator()); Composite buttonGroup = new Composite(parent, SWT.NONE); GridLayoutFactory.fillDefaults().generateLayout(buttonGroup); Button selectAllButton = new Button(buttonGroup, SWT.PUSH); selectAllButton.setText(Messages.ConvertProjectsToBundlesWizardPage_SelectAll); selectAllButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { fSelected.addAll(fUnconverted); } }); GridDataFactory.fillDefaults().applyTo(selectAllButton); Button deselectAllButton = new Button(buttonGroup, SWT.PUSH); deselectAllButton.setText(Messages.ConvertProjectsToBundlesWizardPage_DeselectAll); deselectAllButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { for (Object o : fUnconverted) { fSelected.remove(o); } } }); GridDataFactory.fillDefaults().applyTo(deselectAllButton); Button addReferencesButton = new Button(buttonGroup, SWT.PUSH); addReferencesButton.setText(Messages.ConvertProjectsToBundlesWizardPage_AddReferences); addReferencesButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { selectReferences(); } }); GridDataFactory.fillDefaults().indent(0, 8).applyTo(addReferencesButton); Label selectedCountLabel = new Label(buttonGroup, SWT.WRAP); GridDataFactory.swtDefaults().align(SWT.FILL, SWT.BOTTOM).grab(false, true).applyTo(selectedCountLabel); dbc.bindValue(SWTObservables.observeText(selectedCountLabel), new ComputedValue(String.class) { @Override protected Object calculate() { return NLS.bind(Messages.ConvertProjectsToBundlesWizardPage_SelectionCounter, fSelected.size(), fUnconverted.size()); } }); } private void selectReferences() { IProject[] selectedProjects = getProjects(); for (IProject project : selectedProjects) { IVirtualComponent component = ComponentCore.createComponent(project); if (component != null) { IVirtualReference[] references = component.getReferences(); for (IVirtualReference ref : references) { IProject refProject = ref.getReferencedComponent().getProject(); try { if (refProject != null && refProject != project && !isOSGiBundle(refProject)) { fSelected.add(refProject); } } catch (CoreException e) { LibraFacetUIPlugin.logError(e); // do nothing - check the next reference } } } } } }