Java tutorial
/** * Copyright (c) 2010, 2014 Darmstadt University of Technology. * 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: * Johannes Dorn - initial API and implementation. */ package org.eclipse.recommenders.internal.rcp; import static org.eclipse.recommenders.internal.rcp.l10n.LogMessages.*; import static org.eclipse.recommenders.utils.Logs.log; import java.io.IOException; import java.text.MessageFormat; import java.util.Collection; import org.apache.commons.lang3.StringUtils; import org.eclipse.core.runtime.preferences.InstanceScope; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.dialogs.MessageDialogWithToggle; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.recommenders.internal.rcp.l10n.Messages; import org.eclipse.recommenders.utils.rcp.Browsers; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; 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; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.preferences.ScopedPreferenceStore; import org.osgi.framework.Bundle; import org.osgi.framework.Version; import com.google.common.base.Function; import com.google.common.collect.Collections2; /** * Gives the user the option to restart the workbench with the -clean flag * * Code partially taken from {@link org.eclipse.ui.internal.ide.actions.OpenWorkspaceAction} */ public class BundleResolutionFailureDialog extends MessageDialogWithToggle { private static final String RECOMMENDERS_FAQ_URL = "https://www.eclipse.org/recommenders/faq/"; //$NON-NLS-1$ private static final String BUGZILLA_URL = "https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Recommenders&version={0}&bug_severity=enhancement&short_desc=Your%20short%20description&comment=A%20longer%20description%0D%0DUnresolved bundles:%0D{1}&component=Core&rep_platform=All"; //$NON-NLS-1$ private static final String PROP_VM = "eclipse.vm"; //$NON-NLS-1$ private static final String PROP_VMARGS = "eclipse.vmargs"; //$NON-NLS-1$ private static final String PROP_COMMANDS = "eclipse.commands"; //$NON-NLS-1$ private static final String PROP_EXIT_CODE = "eclipse.exitcode"; //$NON-NLS-1$ private static final String PROP_EXIT_DATA = "eclipse.exitdata"; //$NON-NLS-1$ private static final String CMD_VMARGS = "-vmargs"; //$NON-NLS-1$ private static final String NEW_LINE = "\n"; //$NON-NLS-1$ private final Version recommendersVersion; private final Collection<Bundle> unresolvedBundles; public BundleResolutionFailureDialog(Shell parentShell, Version recommendersVersion, Collection<Bundle> unresolvedBundles) { super(parentShell, Messages.DIALOG_TITLE_BUNDLE_RESOLUTION_FAILURE, null, Messages.DIALOG_MESSAGE_BUNDLE_RESOLUTION_FAILURE, MessageDialog.ERROR, new String[] { IDialogConstants.CANCEL_LABEL, Messages.DIALOG_BUTTON_RESTART }, 1, Messages.DIALOG_TOGGLE_IGNORE_BUNDLE_RESOLUTION_FAILURES, false); this.recommendersVersion = recommendersVersion; this.unresolvedBundles = unresolvedBundles; setPrefStore(new ScopedPreferenceStore(InstanceScope.INSTANCE, Constants.BUNDLE_ID)); setPrefKey(Constants.PREF_IGNORE_BUNDLE_RESOLUTION_FAILURE); } @Override protected Control createCustomArea(Composite parent) { Label bundleListLabel = new Label(parent, SWT.NONE); bundleListLabel.setText(Messages.DIALOG_LABEL_BUNDLE_LIST); List bundleList = new List(parent, SWT.BORDER | SWT.V_SCROLL | SWT.SINGLE); for (Bundle bundle : unresolvedBundles) { bundleList.add(bundle.getSymbolicName()); } GridDataFactory.fillDefaults().grab(true, false).hint(SWT.DEFAULT, 150).applyTo(bundleList); addLink(parent, Messages.DIALOG_MESSAGE_BUNDLE_RESOLUTION_FAQ, RECOMMENDERS_FAQ_URL); Collection<String> unresolvedBundleNames = Collections2.transform(unresolvedBundles, new Function<Bundle, String>() { @Override public String apply(Bundle input) { return input.getSymbolicName(); } }); String version = recommendersVersion.getMajor() + "." + recommendersVersion.getMinor() + "." //$NON-NLS-1$ //$NON-NLS-2$ + recommendersVersion.getMicro(); String bugLinkUrl = MessageFormat.format(BUGZILLA_URL, version, StringUtils.join(unresolvedBundleNames, '\n')); addLink(parent, Messages.DIALOG_MESSAGE_BUNDLE_RESOLUTION_FILE_A_BUG, bugLinkUrl); return parent; } private void addLink(Composite parent, String text, String url) { Link link = new Link(parent, SWT.BEGINNING); link.setText(MessageFormat.format(text, url)); link.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent event) { Browsers.tryOpenInExternalBrowser(event.text); } }); } @Override protected void buttonPressed(int buttonId) { setReturnCode(buttonId); close(); if (getToggleState() && getPrefStore() != null && getPrefKey() != null) { getPrefStore().setValue(getPrefKey(), ALWAYS); try { ((ScopedPreferenceStore) getPrefStore()).save(); } catch (IOException e) { log(ERROR_PREFERENCES_NOT_SAVED, e); } } if (buttonId == IDialogConstants.INTERNAL_ID) { String commandLine = buildCommandLine(); if (commandLine == null) { return; } System.setProperty(PROP_EXIT_CODE, Integer.toString(24)); System.setProperty(PROP_EXIT_DATA, buildCommandLine()); PlatformUI.getWorkbench().restart(); } } public boolean isIgnored() { return getPrefStore().getString(getPrefKey()).equals(MessageDialogWithToggle.ALWAYS); } /** * Create and return a string with command line options for eclipse that will launch a new workbench that is the * same as the currently running one, but adding the -clean flag. * * @param workspace * the directory to use as the new workspace * @return a string of command line options or null on error */ private String buildCommandLine() { String property = System.getProperty(PROP_VM); if (property == null) { log(ERROR_DIALOG_RESTART_NOT_POSSIBLE); return null; } StringBuilder result = new StringBuilder(512); result.append(property); result.append(NEW_LINE); // append the vmargs and commands. Assume that these already end in \n String vmargs = System.getProperty(PROP_VMARGS); if (vmargs != null) { result.append(vmargs); } result.append("-clean"); //$NON-NLS-1$ result.append(NEW_LINE); // append the rest of the args, replacing or adding -data as required property = System.getProperty(PROP_COMMANDS); result.append(property); result.append(NEW_LINE); // put the vmargs back at the very end (the eclipse.commands property // already contains the -vm arg) if (vmargs != null) { result.append(CMD_VMARGS); result.append(NEW_LINE); result.append(vmargs); } return result.toString(); } }