Java tutorial
/** * Copyright (c) 2016 NumberFour AG. * 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: * NumberFour AG - Initial API and implementation */ package eu.numberfour.n4js.ui.workingsets; import static com.google.common.collect.FluentIterable.from; import static com.google.common.collect.Sets.newTreeSet; import static java.util.Collections.singletonList; import static org.eclipse.jface.layout.GridDataFactory.fillDefaults; import static org.eclipse.swt.SWT.BORDER; import static org.eclipse.swt.SWT.CENTER; import static org.eclipse.swt.SWT.FILL; import static org.eclipse.swt.SWT.PUSH; import static org.eclipse.swt.SWT.SHADOW_IN; import java.util.Arrays; import java.util.Collection; import java.util.Comparator; import java.util.concurrent.atomic.AtomicReference; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import com.google.common.base.Optional; import com.google.common.primitives.Ints; import com.google.inject.Inject; import eu.numberfour.n4js.ui.ImageDescriptorCache.ImageRef; import eu.numberfour.n4js.ui.navigator.N4JSProjectExplorerLabelProvider; import eu.numberfour.n4js.ui.utils.UIUtils; import eu.numberfour.n4js.ui.viewer.TableViewerBuilder; import eu.numberfour.n4js.ui.workingsets.ManualAssociationAwareWorkingSetManager.ManualAssociationWorkingSet; import eu.numberfour.n4js.utils.Arrays2; /** * Wizard for creating and editing working sets based on manual associations between working sets and workspace * projects. */ public class WorkingSetManualAssociationWizard extends WorkingSetEditWizard { private static final String TITLE = "Manual Association Working Set"; private static final String DESCRIPTION = "Enter a working set name and select projects that have to be associated with the working set."; private static final Point SHELL_SIZE = new Point(600, 650); private static final Comparator<IProject> PROJECT_NAME_COMPARATOR = (left, right) -> { if (left == null) { return right == null ? 0 : 1; } if (right == null) { return -1; } return left.getName().compareTo(right.getName()); }; private final AtomicReference<WorkingSet> workingSetRef = new AtomicReference<>(); private final AtomicReference<String> originalName = new AtomicReference<>(); @Inject private N4JSProjectExplorerLabelProvider labelProvider; @Override public void addPages() { addPage(new WizardPage("") { private Text nameText; private final Collection<IProject> workspaceProjects = newTreeSet(PROJECT_NAME_COMPARATOR); private final Collection<IProject> workingSetProjects = newTreeSet(PROJECT_NAME_COMPARATOR); @Override public void createControl(Composite parent) { final Composite composite = new Composite(parent, NONE); composite.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).equalWidth(false).create()); composite.setLayoutData(fillDefaults().align(FILL, FILL).grab(true, true).create()); new Label(composite, NONE).setText("Working set name:"); nameText = new Text(composite, BORDER); nameText.setLayoutData(fillDefaults().align(FILL, CENTER).grab(true, false).create()); Composite tableComposite = new Composite(composite, NONE); tableComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(3).equalWidth(false).create()); tableComposite.setLayoutData(fillDefaults().align(FILL, FILL).grab(true, true).span(2, 1).create()); Group workspaceGroup = new Group(tableComposite, SHADOW_IN); workspaceGroup.setText("Available workspace projects"); workspaceGroup.setLayout(GridLayoutFactory.fillDefaults().create()); workspaceGroup.setLayoutData(fillDefaults().align(FILL, FILL).grab(true, true).create()); final TableViewer allProjectsViewer = new TableViewerBuilder(singletonList("")).setHasBorder(true) .setHeaderVisible(false).setLinesVisible(false).setMultipleSelection(true) .setColumnWidthsInPixel(Ints.asList(350)).setLabelProvider(labelProvider) .build(workspaceGroup); Composite buttonComposite = new Composite(tableComposite, NONE); buttonComposite.setLayout(GridLayoutFactory.fillDefaults().create()); // buttonComposite.setLayoutData(fillDefaults().align(CENTER, CENTER).grab(false, false).create()); final Button addButton = new Button(buttonComposite, PUSH); addButton.setImage(ImageRef.RIGHT_ARROW.asImage().orNull()); addButton.setToolTipText("Add all selected workspace projects"); addButton.setEnabled(false); final Button removeButton = new Button(buttonComposite, PUSH); removeButton.setImage(ImageRef.LEFT_ARROW.asImage().orNull()); removeButton.setToolTipText("Remove all selected working set element projects"); removeButton.setEnabled(false); Group workingSetGroup = new Group(tableComposite, SHADOW_IN); workingSetGroup.setText("Associated working set projects"); workingSetGroup.setLayout(GridLayoutFactory.fillDefaults().create()); workingSetGroup.setLayoutData(fillDefaults().align(FILL, FILL).grab(true, true).create()); final TableViewer associatedProjectsViewer = new TableViewerBuilder(singletonList("")) .setHasBorder(true).setHeaderVisible(false).setLinesVisible(false) .setMultipleSelection(true).setColumnWidthsInPixel(Ints.asList(350)) .setLabelProvider(labelProvider).build(workingSetGroup); addButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { IStructuredSelection selection = allProjectsViewer.getStructuredSelection(); if (selection != null && !selection.isEmpty()) { final IProject[] projects = Arrays2.filter(selection.toArray(), IProject.class); allProjectsViewer.remove(projects); associatedProjectsViewer.add(projects); workspaceProjects.removeAll(Arrays.asList(projects)); workingSetProjects.addAll(Arrays.asList(projects)); setPageComplete(validatePage()); } } }); removeButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { IStructuredSelection selection = associatedProjectsViewer.getStructuredSelection(); if (selection != null && !selection.isEmpty()) { final IProject[] projects = Arrays2.filter(selection.toArray(), IProject.class); associatedProjectsViewer.remove(projects); allProjectsViewer.add(projects); workingSetProjects.removeAll(Arrays.asList(projects)); workspaceProjects.addAll(Arrays.asList(projects)); setPageComplete(validatePage()); } } }); associatedProjectsViewer.addSelectionChangedListener(event -> { final IStructuredSelection selection = associatedProjectsViewer.getStructuredSelection(); removeButton.setEnabled(null != selection && !selection.isEmpty()); }); allProjectsViewer.addSelectionChangedListener(event -> { final IStructuredSelection selection = allProjectsViewer.getStructuredSelection(); addButton.setEnabled(null != selection && !selection.isEmpty()); }); setPageComplete(false); setControl(composite); final Optional<WorkingSet> editedWorkingSet = getEditedWorkingSet(); workspaceProjects.addAll(Arrays.asList(ResourcesPlugin.getWorkspace().getRoot().getProjects())); if (editedWorkingSet.isPresent()) { final ManualAssociationWorkingSet workingSet = (ManualAssociationWorkingSet) editedWorkingSet .get(); workingSetRef.set(workingSet); nameText.setText(workingSet.getName()); nameText.selectAll(); workingSetProjects.addAll(workingSet.getAssociatedProjects()); workspaceProjects.removeAll(workingSetProjects); originalName.set(workingSet.getName()); } composite.getDisplay().asyncExec(() -> { setTitle(TITLE); setDescription(DESCRIPTION); allProjectsViewer.setInput(workspaceProjects); associatedProjectsViewer.setInput(workingSetProjects); }); nameText.addModifyListener(e -> setPageComplete(validatePage())); } @Override public void setVisible(boolean visible) { if (visible) { Rectangle location = UIUtils.getConstrainedShellBounds(getShell(), SHELL_SIZE); getShell().setBounds(location); } super.setVisible(visible); } @SuppressWarnings("null") private boolean validatePage() { String errorMessage = null; final String name = nameText.getText(); final WorkingSetManager manager = getManager(); if (manager == null) { errorMessage = "No active working set manager is available."; } if (errorMessage == null) { if (name == null || name.trim().length() == 0) { errorMessage = "Working set name should be specified."; } } if (errorMessage == null) { if (!name.equals(originalName.get()) // This case ID and name are equal. Intentionally name. && Arrays2.transform(manager.getAllWorkingSets(), ws -> ws.getName()).contains(name)) { errorMessage = "A working set already exists with name '" + name + "'."; } } if (errorMessage != null) { workingSetRef.set(null); } else { final Iterable<String> projectNames = from(workingSetProjects).transform(p -> p.getName()); workingSetRef.set(new ManualAssociationWorkingSet(projectNames, name, manager)); } setMessage(errorMessage, ERROR); return errorMessage == null; } }); } @Override public Optional<WorkingSet> getWorkingSet() { return Optional.fromNullable(workingSetRef.get()); } @Override public boolean performFinish() { return null != getWorkingSet(); } }