Java tutorial
//------------------------------------------------------------------------------ // Copyright (c) 2005, 2007 IBM Corporation 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: // IBM Corporation - initial implementation //------------------------------------------------------------------------------ package org.eclipse.epf.export.wizards; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.Comparator; import java.util.List; import org.eclipse.epf.authoring.ui.AuthoringUIResources; import org.eclipse.epf.authoring.ui.AuthoringUIText; import org.eclipse.epf.export.ExportPlugin; import org.eclipse.epf.export.ExportResources; import org.eclipse.epf.export.services.PluginExportData; import org.eclipse.epf.library.LibraryService; import org.eclipse.epf.library.edit.PresentationContext; import org.eclipse.epf.library.ui.LibraryUIImages; import org.eclipse.epf.library.ui.LibraryUIResources; import org.eclipse.epf.ui.wizards.BaseWizardPage; import org.eclipse.epf.uma.MethodLibrary; import org.eclipse.epf.uma.MethodPlugin; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.wizard.IWizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.Text; /** * A wizard page that prompts the user to select the method plug-ins to be * exported. * * @author Jinhua Xi * @author Kelvin Low * @since 1.0 */ public class SelectPluginPage extends BaseWizardPage implements ISelectionChangedListener, ICheckStateListener, Listener { public static final String PAGE_NAME = SelectPluginPage.class.getName(); private Table table; private CheckboxTableViewer ctrl_chkboxTableViewer; private Text ctrl_author; private Text ctrl_version; private Text ctrl_briefDesc; private int checkedCount = 0; private Collection<MethodPlugin> checkedPluginList = new ArrayList<MethodPlugin>(); private PluginExportData data; private Button selectAllButton; private Button deselectAllButton; /** * Creates a new instance. */ public SelectPluginPage(PluginExportData data) { super(PAGE_NAME); setTitle(ExportResources.selectPluginsPage_title); setDescription(ExportResources.selectPluginsPage_desc); setImageDescriptor(ExportPlugin.getDefault().getImageDescriptor("full/wizban/exp_meth_plugin_wizban.gif")); //$NON-NLS-1$ this.data = data; } /** * @see org.eclipse.jface.dialogs.IDialogPage#createControl(Composite) */ public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NONE); container.setLayout(new GridLayout()); Composite container1 = new Composite(container, SWT.NONE); container1.setLayout(new GridLayout(3, false)); createLabel(container1, ExportResources.selectPluginsPage_pluginsLabel_text); selectAllButton = createButton(container1, AuthoringUIResources.AuthoringUIPlugin_SaveAllEditorsPage_SelectAllButtonLabel); deselectAllButton = createButton(container1, AuthoringUIResources.AuthoringUIPlugin_SaveAllEditorsPage_DeselectAllButtonLabel); ctrl_chkboxTableViewer = createCheckboxTableViewer(container, 1); table = ctrl_chkboxTableViewer.getTable(); MethodLibrary library = LibraryService.getInstance().getCurrentMethodLibrary(); List plugins = (library == null) ? new ArrayList() : new ArrayList(library.getMethodPlugins()); if (plugins.size() > 1) { Comparator comparator = PresentationContext.INSTANCE.getComparator(); Collections.<MethodPlugin>sort(plugins, comparator); } ILabelProvider labelProvider = new LabelProvider() { public Image getImage(Object element) { return LibraryUIImages.IMG_METHOD_PLUGIN; } public String getText(Object element) { if (element instanceof MethodPlugin) { return ((MethodPlugin) element).getName(); } else { return element.toString(); } } }; ctrl_chkboxTableViewer.setLabelProvider(labelProvider); ctrl_chkboxTableViewer.setContentProvider(new ArrayContentProvider()); if (plugins != null) { ctrl_chkboxTableViewer.setInput(plugins.toArray()); } createLabel(container, AuthoringUIText.AUTHORS_TEXT); ctrl_author = createMultiLineText(container, "", 360, 40, 3); //$NON-NLS-1$ createLabel(container, AuthoringUIText.VERSION_TEXT); ctrl_version = createText(container, "", 360, 3); //$NON-NLS-1$ createLabel(container, AuthoringUIText.BRIEF_DESCRIPTION_TEXT); ctrl_briefDesc = createMultiLineText(container, "", 360, 80, 3); //$NON-NLS-1$ if (plugins != null && !plugins.isEmpty()) { table.select(0); setDisplayAttributes((MethodPlugin) plugins.get(0)); } addListeners(plugins); setControl(container); setPageComplete(false); } private void addListeners(final List<MethodPlugin> plugins) { ctrl_chkboxTableViewer.addSelectionChangedListener(this); ctrl_chkboxTableViewer.addCheckStateListener(this); final MethodLibrary lib = LibraryService.getInstance().getCurrentMethodLibrary(); selectAllButton.addSelectionListener(new SelectionListener() { public void widgetSelected(SelectionEvent e) { ctrl_chkboxTableViewer.setAllChecked(true); if (lib != null) { checkedPluginList.clear(); checkedPluginList.addAll(plugins); checkedCount = checkedPluginList.size(); } setPageComplete(isPageComplete()); getWizard().getContainer().updateButtons(); } public void widgetDefaultSelected(SelectionEvent e) { widgetSelected(e); } }); deselectAllButton.addSelectionListener(new SelectionListener() { public void widgetSelected(SelectionEvent e) { ctrl_chkboxTableViewer.setAllChecked(false); if (lib != null) { checkedPluginList.clear(); checkedCount = 0; } setPageComplete(isPageComplete()); getWizard().getContainer().updateButtons(); } public void widgetDefaultSelected(SelectionEvent e) { widgetSelected(e); } }); } /** * @see org.eclipse.jface.viewers.ICheckStateListener#checkStateChanged(org.eclipse.jface.viewers.CheckStateChangedEvent) */ public void checkStateChanged(CheckStateChangedEvent event) { Object obj = event.getElement(); if (obj instanceof MethodPlugin) { if (event.getChecked()) { checkedCount++; checkedPluginList.add((MethodPlugin) obj); } else { checkedCount--; checkedPluginList.remove(obj); } setPageComplete(isPageComplete()); getWizard().getContainer().updateButtons(); } } /** * @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent) */ public void selectionChanged(SelectionChangedEvent event) { StructuredSelection selection = (StructuredSelection) event.getSelection(); if (!selection.isEmpty()) { Object[] plugin = selection.toArray(); setDisplayAttributes((MethodPlugin) plugin[0]); } } /** * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event) */ public void handleEvent(Event event) { setPageComplete(isPageComplete()); getWizard().getContainer().updateButtons(); } private void setDisplayAttributes(MethodPlugin plugin) { ctrl_author.setText(plugin.getAuthors()); ctrl_version.setText(plugin.getVersion()); ctrl_briefDesc.setText(plugin.getBriefDescription()); } /** * @see org.eclipse.jface.wizard.WizardPage#isPageComplete() */ public boolean isPageComplete() { if (LibraryService.getInstance().getCurrentMethodLibrary() == null) { setErrorMessage(LibraryUIResources.noOpenLibraryWarning_msg); return false; } if (getErrorMessage() != null) { return false; } return checkedCount > 0; } protected void saveDataToModel() { data.setSelectedPlugins(checkedPluginList); } /** * @see org.eclipse.jface.wizard.WizardPage#getNextPage() */ public IWizardPage getNextPage() { saveDataToModel(); PluginInfoPage page = ((ExportPluginWizard) getWizard()).page2; page.onEnterPage(null); return page; } }