Java tutorial
/******************************************************************************* * Copyright (c) 2007, 2011 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.wizards; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IPath; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ICheckStateListener; 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.jface.viewers.ViewerSorter; import org.eclipse.jface.wizard.WizardPage; 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.Display; import org.eclipse.swt.widgets.Label; import org.springframework.ide.eclipse.beans.ui.BeansUIImages; import org.springframework.ide.eclipse.beans.ui.namespaces.INamespaceDefinition; import org.springframework.ide.eclipse.beans.ui.namespaces.NamespaceUtils; /** * {@link WizardPage} that displays a list of {@link INamespaceDefinition}s to the user in order to allow for selecting * the desired XSD namespace declarations. * @author Christian Dupuis * @since 2.0 */ public class NamespaceSelectionWizardPage extends WizardPage { public class XsdLabelProvider extends LabelProvider { public Image getImage(Object element) { if (element instanceof INamespaceDefinition) { INamespaceDefinition xsdDef = (INamespaceDefinition) element; return xsdDef.getNamespaceImage(); } return BeansUIImages.getImage(BeansUIImages.IMG_OBJS_XSD); } public String getText(Object element) { if (element instanceof INamespaceDefinition) { INamespaceDefinition xsdDef = (INamespaceDefinition) element; return xsdDef.getDefaultNamespacePrefix() + " - " + xsdDef.getNamespaceURI(); } return ""; } } public class VersionLabelProvider extends LabelProvider { public Image getImage(Object element) { return BeansUIImages.getImage(BeansUIImages.IMG_OBJS_XSD); } } private class XsdConfigContentProvider implements IStructuredContentProvider { private List<INamespaceDefinition> namespaceDefinitionList = new ArrayList<INamespaceDefinition>(); private boolean loading = false; private IProject activeProject = null; public Object[] getElements(Object obj) { IProject project = null; if (filePath != null && filePath.segmentCount() > 0) { String projectName = filePath.segment(0); project = ResourcesPlugin.getWorkspace().getRoot().getProject(projectName); } if ((activeProject == null && project != null) || (activeProject != null && !activeProject.equals(project))) { namespaceDefinitionList = new ArrayList<INamespaceDefinition>(); loading = false; } if (namespaceDefinitionList.size() == 0 && !loading) { activeProject = project; NamespaceUtils.getNamespaceDefinitions(project, new NamespaceUtils.INamespaceDefinitionTemplate() { public void doWithNamespaceDefinitions(INamespaceDefinition[] namespaceDefinitions, final IProject project) { if (project == null || (project != null && project.equals(activeProject))) { for (INamespaceDefinition namespaceDefinition : namespaceDefinitions) { synchronized (namespaceDefinitionList) { if (!namespaceDefinitionList.contains(namespaceDefinition)) { namespaceDefinitionList.add(namespaceDefinition); } } } Display.getDefault().asyncExec(new Runnable() { public void run() { if (!xsdViewer.getControl().isDisposed()) { xsdViewer.setInput(this); } } }); } loading = false; } }); } return namespaceDefinitionList.toArray(); } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } public void dispose() { } } private class VersionContentProvider implements IStructuredContentProvider { public Object[] getElements(Object obj) { if (obj instanceof INamespaceDefinition) { return ((INamespaceDefinition) obj).getSchemaLocations().toArray(); } else { return new Object[0]; } } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } public void dispose() { } } private static final int XSD_LIST_VIEWER_HEIGHT = 150; private static final int LIST_VIEWER_WIDTH = 340; private CheckboxTableViewer xsdViewer; private CheckboxTableViewer versionViewer; private Map<INamespaceDefinition, String> selectedVersion = new HashMap<INamespaceDefinition, String>(); private INamespaceDefinition selectedNamespaceDefinition; private IPath filePath; protected NamespaceSelectionWizardPage(String pageName) { super(pageName); setTitle(BeansWizardsMessages.NewConfig_title); setDescription(BeansWizardsMessages.NewConfig_xsdDescription); } public void createControl(Composite parent) { initializeDialogUnits(parent); // top level group Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.marginTop = 5; composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL)); composite.setFont(parent.getFont()); setControl(composite); Label namespaceLabel = new Label(composite, SWT.NONE); namespaceLabel.setText("Select desired XSD namespace declarations:"); GridData gd = new GridData(GridData.FILL_BOTH); gd.widthHint = LIST_VIEWER_WIDTH; gd.heightHint = XSD_LIST_VIEWER_HEIGHT; // config set list viewer xsdViewer = CheckboxTableViewer.newCheckList(composite, SWT.BORDER); xsdViewer.getTable().setLayoutData(gd); xsdViewer.setContentProvider(new XsdConfigContentProvider()); xsdViewer.setLabelProvider(new XsdLabelProvider()); xsdViewer.setInput(this); // activate content provider INamespaceDefinition defaultDefinition = NamespaceUtils.getDefaultNamespaceDefinition(); if (defaultDefinition != null) { xsdViewer.setGrayedElements(new Object[] { defaultDefinition }); xsdViewer.setCheckedElements(new Object[] { defaultDefinition }); } xsdViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { if (event.getSelection() instanceof IStructuredSelection) { Object obj = ((IStructuredSelection) event.getSelection()).getFirstElement(); selectedNamespaceDefinition = (INamespaceDefinition) obj; versionViewer.setInput(obj); if (selectedVersion.containsKey(selectedNamespaceDefinition)) { versionViewer.setCheckedElements( new Object[] { selectedVersion.get(selectedNamespaceDefinition) }); } if (xsdViewer.getChecked(obj) && selectedNamespaceDefinition.getSchemaLocations().size() > 0) { versionViewer.getControl().setEnabled(true); } else { versionViewer.getControl().setEnabled(false); } } } }); xsdViewer.addCheckStateListener(new ICheckStateListener() { public void checkStateChanged(final CheckStateChangedEvent event) { Object obj = event.getElement(); selectedNamespaceDefinition = (INamespaceDefinition) obj; versionViewer.setInput(obj); if (selectedVersion.containsKey(selectedNamespaceDefinition)) { versionViewer .setCheckedElements(new Object[] { selectedVersion.get(selectedNamespaceDefinition) }); } if (event.getChecked() && selectedNamespaceDefinition != null && selectedNamespaceDefinition.getSchemaLocations().size() > 0) { versionViewer.getControl().setEnabled(true); } else { versionViewer.getControl().setEnabled(false); } } }); Label versionLabel = new Label(composite, SWT.NONE); versionLabel.setText("Select desired XSD (if none is selected the default will be used):"); versionViewer = CheckboxTableViewer.newCheckList(composite, SWT.BORDER); versionViewer.getTable().setLayoutData(gd); versionViewer.setContentProvider(new VersionContentProvider()); versionViewer.setLabelProvider(new VersionLabelProvider()); versionViewer.setSorter(new ViewerSorter()); versionViewer.addCheckStateListener(new ICheckStateListener() { public void checkStateChanged(final CheckStateChangedEvent event) { if (event.getChecked()) { versionViewer.setCheckedElements(new Object[] { event.getElement() }); if (selectedNamespaceDefinition != null) { selectedVersion.put(selectedNamespaceDefinition, (String) event.getElement()); } } else { versionViewer.setCheckedElements(new Object[0]); selectedVersion.remove(selectedNamespaceDefinition); } } }); } public List<INamespaceDefinition> getXmlSchemaDefinitions() { List<INamespaceDefinition> defs = new ArrayList<INamespaceDefinition>(); Object[] checkedElements = xsdViewer.getCheckedElements(); if (checkedElements != null) { for (int i = 0; i < checkedElements.length; i++) { defs.add((INamespaceDefinition) checkedElements[i]); } } return defs; } public Map<INamespaceDefinition, String> getSchemaVersions() { return selectedVersion; } public void setFilePath(IPath filePath) { this.filePath = filePath; if (xsdViewer != null) { xsdViewer.setInput(this); } } }