Java tutorial
/** * Copyright (c) 2011, 2012 Gunnar Wagenknecht 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: * Gunnar Wagenknecht - initial API and implementation * Peter Grube - rework new Admin UI */ package org.eclipse.gyrex.admin.ui.p2.internal; import org.eclipse.gyrex.admin.ui.internal.application.AdminUiUtil; import org.eclipse.gyrex.admin.ui.internal.helper.SwtUtil; import org.eclipse.gyrex.admin.ui.internal.widgets.Infobox; import org.eclipse.gyrex.admin.ui.internal.widgets.NonBlockingMessageDialogs; import org.eclipse.gyrex.admin.ui.pages.AdminPage; import org.eclipse.gyrex.p2.internal.P2Activator; import org.eclipse.gyrex.p2.internal.packages.IPackageManager; import org.eclipse.gyrex.p2.internal.packages.PackageDefinition; import org.eclipse.gyrex.p2.internal.repositories.IRepositoryDefinitionManager; import org.eclipse.gyrex.server.Platform; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.viewers.IOpenListener; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ListViewer; import org.eclipse.jface.viewers.OpenEvent; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.window.Window; import org.eclipse.rap.rwt.widgets.DialogCallback; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Link; import org.eclipse.swt.widgets.List; /** * Configuration page for Jobs. */ public class SoftwareLandingPage extends AdminPage { private Composite pageComposite; private Link manageRepos; private ISelectionChangedListener updateButtonsListener; private ListViewer packagesViewer; private Button addButton; private Button editButton; private Button removeButton; private Button provisionButton; private Button revokeButton; /** * Creates a new instance. */ public SoftwareLandingPage() { setTitle("Software Provisioning"); setTitleToolTip("Install, update and remove software."); } @Override public void activate() { super.activate(); if (packagesViewer != null) { packagesViewer.setInput(getPackageManager()); updateButtonsListener = new ISelectionChangedListener() { @Override public void selectionChanged(final SelectionChangedEvent event) { updateButtons(); } }; packagesViewer.addSelectionChangedListener(updateButtonsListener); packagesViewer.getControl().getDisplay(); } } void addButtonPressed() { final EditPackageDialog dialog = new EditPackageDialog(SwtUtil.getShell(addButton), getPackageManager(), null); dialog.openNonBlocking(new DialogCallback() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void dialogClosed(final int returnCode) { if (returnCode == Window.OK) { refresh(); } } }); } private Button createButton(final Composite buttons, final String buttonLabel) { final Button b = new Button(buttons, SWT.NONE); b.setText(buttonLabel); b.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); return b; } protected void createButtons(final Composite buttonsPanel) { addButton = createButton(buttonsPanel, "Add..."); addButton.addSelectionListener(new SelectionAdapter() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void widgetSelected(final SelectionEvent e) { addButtonPressed(); } }); editButton = createButton(buttonsPanel, "Edit..."); editButton.addSelectionListener(new SelectionAdapter() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void widgetSelected(final SelectionEvent e) { editSelectedPackage(); } }); removeButton = createButton(buttonsPanel, "Remove..."); removeButton.addSelectionListener(new SelectionAdapter() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void widgetSelected(final SelectionEvent e) { removeButtonPressed(); } }); createButtonsSeparator(buttonsPanel); provisionButton = createButton(buttonsPanel, "Provision"); provisionButton.addSelectionListener(new SelectionAdapter() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void widgetSelected(final SelectionEvent e) { provisionButtonPressed(); } }); revokeButton = createButton(buttonsPanel, "Revoke"); revokeButton.addSelectionListener(new SelectionAdapter() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void widgetSelected(final SelectionEvent e) { revokeButtonPressed(); } }); } private Label createButtonsSeparator(final Composite parent) { final Label separator = new Label(parent, SWT.NONE); separator.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false)); return separator; } @Override public Control createControl(final Composite parent) { pageComposite = new Composite(parent, SWT.NONE); pageComposite.setLayout(AdminUiUtil.createGridLayoutWithoutMargin(1, false)); if (Platform.inDevelopmentMode()) { final Infobox infobox = new Infobox(pageComposite); infobox.setLayoutData(AdminUiUtil.createHorzFillData()); infobox.addHeading("Manage software packages"); infobox.addParagraph( "This page offers the possibillty to manage software packages. Create packages of features provided from p2 repositories."); } manageRepos = new Link(pageComposite, SWT.WRAP | SWT.READ_ONLY); manageRepos.setText("Add more software by updating <a>repository list</a>"); manageRepos.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false)); manageRepos.moveAbove(null); manageRepos.addSelectionListener(new SelectionAdapter() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void widgetSelected(final SelectionEvent e) { editRepositoriesList(); } }); final Composite description = new Composite(pageComposite, SWT.NONE); final GridData gd = AdminUiUtil.createFillData(); gd.verticalIndent = 10; description.setLayoutData(gd); description.setLayout(AdminUiUtil.createGridLayoutWithoutMargin(2, false)); packagesViewer = new ListViewer(description, SWT.BORDER | SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL); final List list = packagesViewer.getList(); list.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); packagesViewer.setContentProvider(new PackageContentProvider()); packagesViewer.setLabelProvider(new P2UiLabelProvider()); packagesViewer.addOpenListener(new IOpenListener() { @Override public void open(final OpenEvent event) { editSelectedPackage(); } }); final Composite buttons = new Composite(description, SWT.NONE); buttons.setLayoutData(new GridData(SWT.BEGINNING, SWT.FILL, false, true)); buttons.setLayout(new GridLayout()); createButtons(buttons); updateButtons(); return pageComposite; } @Override public void deactivate() { super.deactivate(); if (packagesViewer != null) { if (updateButtonsListener != null) { packagesViewer.removeSelectionChangedListener(updateButtonsListener); updateButtonsListener = null; } if (!packagesViewer.getList().isDisposed()) { packagesViewer.setInput(null); } } } void editRepositoriesList() { final RepositoriesListDialog dialog = new RepositoriesListDialog(SwtUtil.getShell(manageRepos), getRepoManager()); dialog.openNonBlocking(new DialogCallback() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void dialogClosed(final int returnCode) { if (returnCode == Window.OK) { } dialog.deactivate(); } }); } void editSelectedPackage() { final EditPackageDialog dialog = new EditPackageDialog(SwtUtil.getShell(addButton), getPackageManager(), getSelectedPackage()); dialog.openNonBlocking(new DialogCallback() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void dialogClosed(final int returnCode) { if (returnCode == Window.OK) { refresh(); } } }); } IPackageManager getPackageManager() { return P2Activator.getInstance().getPackageManager(); // return P2UiActivator.getInstance().getService(IPackageManager.class); } /** * @return */ private IRepositoryDefinitionManager getRepoManager() { return P2Activator.getInstance().getRepositoryManager(); } private PackageDefinition getSelectedPackage() { final StructuredSelection selection = (StructuredSelection) packagesViewer.getSelection(); if (!selection.isEmpty() && (selection.getFirstElement() instanceof PackageDefinition)) return (PackageDefinition) selection.getFirstElement(); return null; } void provisionButtonPressed() { final PackageDefinition pkg = getSelectedPackage(); if (pkg == null) return; getPackageManager().markedForInstall(pkg); refresh(); } void refresh() { packagesViewer.refresh(); } void removeButtonPressed() { final PackageDefinition pkg = getSelectedPackage(); if (pkg == null) return; NonBlockingMessageDialogs.openQuestion(SwtUtil.getShell(removeButton), "Remove Package", "Do you really want to delete the package?", new DialogCallback() { /** serialVersionUID */ private static final long serialVersionUID = 1L; @Override public void dialogClosed(final int returnCode) { if (returnCode == Window.OK) { getPackageManager().removePackage(pkg.getId()); refresh(); } } }); } void revokeButtonPressed() { final PackageDefinition pkg = getSelectedPackage(); if (pkg == null) return; getPackageManager().markedForUninstall(pkg); refresh(); } void updateButtons() { final int selectedElementsCount = ((IStructuredSelection) packagesViewer.getSelection()).size(); if (selectedElementsCount == 0) { editButton.setEnabled(false); removeButton.setEnabled(false); provisionButton.setEnabled(false); revokeButton.setEnabled(false); return; } boolean markedforInstall = false; boolean markedforUninstall = false; markedforInstall |= getPackageManager().isMarkedForInstall(getSelectedPackage()); markedforUninstall |= !getPackageManager().isMarkedForInstall(getSelectedPackage()); if (markedforInstall && markedforUninstall) return; provisionButton.setEnabled(markedforUninstall); revokeButton.setEnabled(markedforInstall); removeButton.setEnabled(markedforUninstall); editButton.setEnabled(selectedElementsCount == 1); } }