Java tutorial
/******************************************************************************* * Copyright (c) 2008 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.beans.ui.properties; 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.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.IColorProvider; 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.Color; 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.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.actions.WorkspaceModifyOperation; import org.springframework.ide.eclipse.beans.core.BeansCorePlugin; import org.springframework.ide.eclipse.beans.core.model.locate.BeansConfigLocatorDefinition; import org.springframework.ide.eclipse.beans.core.model.locate.BeansConfigLocatorFactory; import org.springframework.ide.eclipse.beans.ui.BeansUIImages; import org.springframework.ide.eclipse.beans.ui.BeansUIPlugin; import org.springframework.ide.eclipse.ui.SpringUIMessages; /** * @author Christian Dupuis * @since 2.0.5 */ public class ConfigLocatorTab { private static class BeansConfigLocatorDefinitionContentProvider implements IStructuredContentProvider { private List<BeansConfigLocatorDefinition> beansConfigLocatorDefinitions; public BeansConfigLocatorDefinitionContentProvider( List<BeansConfigLocatorDefinition> projectBuilderDefinitions) { this.beansConfigLocatorDefinitions = projectBuilderDefinitions; } public void dispose() { } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } public Object[] getElements(Object inputElement) { return beansConfigLocatorDefinitions.toArray(); } } private class BeansConfigLocatorLabelProvider extends LabelProvider implements IColorProvider { public String getText(Object element) { if (element instanceof BeansConfigLocatorDefinition) { return ((BeansConfigLocatorDefinition) element).getName(); } return super.getText(element); } public Image getImage(Object element) { return BeansUIImages.getImage(BeansUIImages.IMG_OBJS_XSD); } public Color getBackground(Object element) { return null; } public Color getForeground(Object element) { if (element instanceof BeansConfigLocatorDefinition && !((BeansConfigLocatorDefinition) element).getBeansConfigLocator().supports(project)) { return grayColor; } return null; } @Override public void dispose() { super.dispose(); if (grayColor != null) { grayColor.dispose(); } } } private List<BeansConfigLocatorDefinition> beansConfigLocatorDefinitions; private CheckboxTableViewer builderViewer; private Text descriptionText; private IProject project; private Color grayColor = new Color(Display.getDefault(), 150, 150, 150); public ConfigLocatorTab(IProject project) { this.beansConfigLocatorDefinitions = BeansConfigLocatorFactory.getBeansConfigLocatorDefinitions(); 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 (!BeansCorePlugin.getDefault().isAutoDetectionEnabled()) { //We allow users to edit these settings... even though they have been all globally disabled. //At least warn the user of this. Label warning = new Label(composite, SWT.WRAP); warning.setText( "Warning: Autodetection has been globally disabled. Editing these setting will have no effect!"); warning.setForeground(warning.getDisplay().getSystemColor(SWT.COLOR_RED)); } Label beansLabel = new Label(composite, SWT.NONE); beansLabel.setText( BeansUIPlugin.getResourceString("ConfigurationPropertyPage.tabConfigLocators.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 BeansConfigLocatorDefinitionContentProvider(this.beansConfigLocatorDefinitions)); builderViewer.setLabelProvider(new BeansConfigLocatorLabelProvider()); builderViewer.setInput(this); // activate content provider builderViewer.setCheckedElements(getEnabledBeansConfigLocatorDefinitions().toArray()); builderViewer.setGrayedElements(getGreyedBeansConfigLocatorDefinitions().toArray()); builderViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { if (event.getSelection() instanceof IStructuredSelection) { IStructuredSelection sel = (IStructuredSelection) event.getSelection(); BeansConfigLocatorDefinition definition = (BeansConfigLocatorDefinition) sel.getFirstElement(); if (definition == null) clearDescription(); else showDescription(definition); } } }); builderViewer.addCheckStateListener(new ICheckStateListener() { public void checkStateChanged(CheckStateChangedEvent event) { BeansConfigLocatorDefinition obj = (BeansConfigLocatorDefinition) event.getElement(); if (!obj.getBeansConfigLocator().supports(project) && event.getChecked()) { builderViewer.setChecked(obj, false); } } }); 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<BeansConfigLocatorDefinition> getEnabledBeansConfigLocatorDefinitions() { List<BeansConfigLocatorDefinition> builderDefinitions = beansConfigLocatorDefinitions; List<BeansConfigLocatorDefinition> filteredBuilderDefinitions = new ArrayList<BeansConfigLocatorDefinition>(); for (BeansConfigLocatorDefinition builderDefinition : builderDefinitions) { if (builderDefinition.isEnabled(project) && builderDefinition.getBeansConfigLocator().supports(project)) { filteredBuilderDefinitions.add(builderDefinition); } } return filteredBuilderDefinitions; } private List<BeansConfigLocatorDefinition> getGreyedBeansConfigLocatorDefinitions() { List<BeansConfigLocatorDefinition> builderDefinitions = beansConfigLocatorDefinitions; List<BeansConfigLocatorDefinition> filteredBuilderDefinitions = new ArrayList<BeansConfigLocatorDefinition>(); for (BeansConfigLocatorDefinition builderDefinition : builderDefinitions) { if (!builderDefinition.getBeansConfigLocator().supports(project)) { filteredBuilderDefinitions.add(builderDefinition); } } return filteredBuilderDefinitions; } /** * Show the selected description in the text. */ private void showDescription(BeansConfigLocatorDefinition definition) { if (descriptionText == null || descriptionText.isDisposed()) { return; } String text = ""; if (!definition.getBeansConfigLocator().supports(project)) { text = "This configuration file detector does not support the current project!\n\r"; } 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() { if (Arrays.deepEquals(getEnabledBeansConfigLocatorDefinitions().toArray(), this.builderViewer.getCheckedElements())) { return true; } final List checkElements = Arrays.asList(this.builderViewer.getCheckedElements()); WorkspaceModifyOperation operation = new WorkspaceModifyOperation() { @Override protected void execute(IProgressMonitor monitor) throws CoreException, InvocationTargetException, InterruptedException { for (BeansConfigLocatorDefinition beansConfigLocatorDefinition : beansConfigLocatorDefinitions) { if (checkElements.contains(beansConfigLocatorDefinition)) { beansConfigLocatorDefinition.setEnabled(true, project); } else { beansConfigLocatorDefinition.setEnabled(false, project); } } } }; try { operation.run(new NullProgressMonitor()); } catch (InvocationTargetException e) { } catch (InterruptedException e) { } return true; } }