Java tutorial
/******************************************************************************* * Copyright (c) 2007, 2012 Spring IDE Developers * 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: * Spring IDE Developers - initial API and implementation *******************************************************************************/ package org.springframework.ide.eclipse.ui.dialogs; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.eclipse.core.resources.IProject; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.actions.WorkspaceModifyOperation; import org.springframework.ide.eclipse.core.project.IProjectBuilder; import org.springframework.ide.eclipse.core.project.ProjectBuilderDefinition; import org.springframework.ide.eclipse.core.project.ProjectBuilderDefinitionFactory; import org.springframework.ide.eclipse.ui.SpringUIImages; import org.springframework.ide.eclipse.ui.SpringUIMessages; import org.springframework.ide.eclipse.ui.SpringUIPlugin; /** * UI component that allows to enable or disable {@link IProjectBuilder}s on a * per project basis. * @author Christian Dupuis * @since 2.0 */ public class ProjectBuilderPropertyTab { private static class ProjectBuilderDefinitionContentProvider implements IStructuredContentProvider { private List<ProjectBuilderDefinition> projectBuilderDefinitions; public ProjectBuilderDefinitionContentProvider(List<ProjectBuilderDefinition> projectBuilderDefinitions) { this.projectBuilderDefinitions = projectBuilderDefinitions; } public void dispose() { } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } public Object[] getElements(Object inputElement) { return projectBuilderDefinitions.toArray(); } } private static class ProjectBuilderLabelProvider extends LabelProvider { public String getText(Object element) { if (element instanceof ProjectBuilderDefinition) { return ((ProjectBuilderDefinition) element).getName(); } return super.getText(element); } public Image getImage(Object element) { Image image = null; if (element instanceof ProjectBuilderDefinition) { String icon = ((ProjectBuilderDefinition) element).getIconUri(); String ns = ((ProjectBuilderDefinition) element).getNamespaceUri(); if (icon != null && ns != null) { image = SpringUIPlugin.getDefault().getImageRegistry().get(icon); if (image == null) { ImageDescriptor imageDescriptor = SpringUIPlugin.imageDescriptorFromPlugin(ns, icon); SpringUIPlugin.getDefault().getImageRegistry().put(icon, imageDescriptor); image = SpringUIPlugin.getDefault().getImageRegistry().get(icon); } } } if (image == null) { return SpringUIImages.getImage(SpringUIImages.IMG_OBJS_RULE); } else { return image; } } } private List<ProjectBuilderDefinition> projectBuilderDefinitions; private CheckboxTableViewer builderViewer; private Text descriptionText; private IProject project; public ProjectBuilderPropertyTab(IProject project) { this.projectBuilderDefinitions = ProjectBuilderDefinitionFactory.getProjectBuilderDefinitions(); this.project = project; } public Control createContents(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.marginHeight = 3; layout.marginWidth = 3; composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); if (project != null) { Label beansLabel = new Label(composite, SWT.NONE); beansLabel.setText(SpringUIMessages.ProjectBuilderPropertyPage_description); } // config set list viewer builderViewer = CheckboxTableViewer.newCheckList(composite, SWT.BORDER); GridData gd = new GridData(GridData.FILL_BOTH); gd.heightHint = 150; builderViewer.getTable().setLayoutData(gd); builderViewer .setContentProvider(new ProjectBuilderDefinitionContentProvider(this.projectBuilderDefinitions)); builderViewer.setLabelProvider(new ProjectBuilderLabelProvider()); builderViewer.setInput(this); // activate content provider builderViewer.setCheckedElements(getEnabledProjectBuilderDefinitions().toArray()); builderViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { if (event.getSelection() instanceof IStructuredSelection) { IStructuredSelection sel = (IStructuredSelection) event.getSelection(); ProjectBuilderDefinition definition = (ProjectBuilderDefinition) sel.getFirstElement(); if (definition == null) clearDescription(); else showDescription(definition); } } }); Label descriptionLabel = new Label(composite, SWT.NONE); descriptionLabel.setText(SpringUIMessages.ProjectBuilderPropertyPage_builderDescription); descriptionText = new Text(composite, SWT.MULTI | SWT.WRAP | SWT.READ_ONLY | SWT.BORDER | SWT.H_SCROLL); GridData data = new GridData(GridData.FILL_BOTH); data.heightHint = 30; descriptionText.setLayoutData(data); return composite; } private List<ProjectBuilderDefinition> getEnabledProjectBuilderDefinitions() { List<ProjectBuilderDefinition> builderDefinitions = this.projectBuilderDefinitions; List<ProjectBuilderDefinition> filteredBuilderDefinitions = new ArrayList<ProjectBuilderDefinition>(); for (ProjectBuilderDefinition builderDefinition : builderDefinitions) { if (builderDefinition.isEnabled(project)) { filteredBuilderDefinitions.add(builderDefinition); } } return filteredBuilderDefinitions; } /** * Show the selected description in the text. */ private void showDescription(ProjectBuilderDefinition definition) { if (descriptionText == null || descriptionText.isDisposed()) { return; } String text = definition.getDescription(); if (text == null || text.length() == 0) descriptionText.setText(SpringUIMessages.ProjectBuilderPropertyPage_noBuilderDescription); else descriptionText.setText(text); } /** * Clear the selected description in the text. */ private void clearDescription() { if (descriptionText == null || descriptionText.isDisposed()) { return; } descriptionText.setText(""); //$NON-NLS-1$ } public boolean performOk() { final List checkElements = Arrays.asList(this.builderViewer.getCheckedElements()); WorkspaceModifyOperation operation = new WorkspaceModifyOperation() { @Override protected void execute(IProgressMonitor monitor) throws CoreException, InvocationTargetException, InterruptedException { for (ProjectBuilderDefinition projectBuilderDefinition : projectBuilderDefinitions) { if (checkElements.contains(projectBuilderDefinition)) { projectBuilderDefinition.setEnabled(true, project); } else { projectBuilderDefinition.setEnabled(false, project); } } } }; try { operation.run(new NullProgressMonitor()); } catch (InvocationTargetException e) { } catch (InterruptedException e) { } return true; } }