Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2009 Tasktop Technologies 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: * Tasktop Technologies - initial API and implementation *******************************************************************************/ package org.eclipse.mylyn.commons.ui; import java.lang.reflect.InvocationTargetException; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProduct; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.OperationCanceledException; import org.eclipse.core.runtime.Platform; import org.eclipse.core.runtime.Status; import org.eclipse.jface.action.LegacyActionTools; import org.eclipse.jface.dialogs.DialogPage; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.operation.IRunnableContext; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.mylyn.commons.core.ICoreRunnable; import org.eclipse.mylyn.internal.commons.ui.CommonsUiConstants; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Menu; /** * @author Steffen Pingel * @since 3.7 */ public class CommonUiUtil { private static final String KEY_ENABLED = "org.eclipse.mylyn.commons.ui.enabled"; //$NON-NLS-1$ public static void run(IRunnableContext context, final ICoreRunnable runnable) throws CoreException { try { IRunnableWithProgress runner = new IRunnableWithProgress() { public void run(final IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { try { runnable.run(monitor); } catch (CoreException e) { throw new InvocationTargetException(e); } catch (OperationCanceledException e) { throw new InterruptedException(); } finally { monitor.done(); } } }; context.run(true, true, runner); } catch (InvocationTargetException e) { if (e.getCause() instanceof CoreException) { throw (CoreException) e.getCause(); } else { Platform.getLog(Platform.getBundle(CommonsUiConstants.ID_PLUGIN)) .log(new Status(IStatus.ERROR, CommonsUiConstants.ID_PLUGIN, "Unexpected exception", e)); //$NON-NLS-1$ } } catch (InterruptedException e) { throw new OperationCanceledException(); } } public static void setMessage(DialogPage page, IStatus status) { String message = status.getMessage(); switch (status.getSeverity()) { case IStatus.OK: page.setMessage(null, IMessageProvider.NONE); break; case IStatus.INFO: page.setMessage(message, IMessageProvider.INFORMATION); break; case IStatus.WARNING: page.setMessage(message, IMessageProvider.WARNING); break; default: page.setMessage(message, IMessageProvider.ERROR); break; } } /** * Recursively sets the menu of all children of <code>composite</code>. */ public static void setMenu(Composite composite, Menu menu) { if (!composite.isDisposed()) { composite.setMenu(menu); for (Control child : composite.getChildren()) { child.setMenu(menu); if (child instanceof Composite) { setMenu((Composite) child, menu); } } } } public static void setEnabled(Composite composite, boolean restore) { if (restore) { restoreState(composite); } else { saveStateAndDisable(composite); } } private static void saveStateAndDisable(Composite composite) { if (!composite.isDisposed()) { Object data = composite.getData(KEY_ENABLED); if (data == null) { if (!composite.getEnabled()) { composite.setData(KEY_ENABLED, Boolean.FALSE); } else { composite.setData(KEY_ENABLED, Boolean.TRUE); composite.setEnabled(false); } } for (Control control : composite.getChildren()) { if (control instanceof Composite) { saveStateAndDisable((Composite) control); } else { data = control.getData(KEY_ENABLED); if (data == null) { if (!control.getEnabled()) { control.setData(KEY_ENABLED, Boolean.FALSE); } else { control.setData(KEY_ENABLED, Boolean.TRUE); control.setEnabled(false); } } } } } } private static void restoreState(Composite composite) { if (!composite.isDisposed()) { Object data = composite.getData(KEY_ENABLED); if (data != null) { if (data == Boolean.TRUE) { composite.setEnabled(data == Boolean.TRUE); } composite.setData(KEY_ENABLED, null); } for (Control control : composite.getChildren()) { if (control instanceof Composite) { restoreState((Composite) control); } else { data = control.getData(KEY_ENABLED); if (data != null) { if (data == Boolean.TRUE) { control.setEnabled(true); } control.setData(KEY_ENABLED, null); } } } } } /** * Returns text masking the &-character from decoration as an accelerator in SWT labels. * * @deprecated use LegacyActionTools#escapeMnemonics(String) instead */ @Deprecated public static String toLabel(String text) { return (text != null) ? text.replaceAll("&", "&&") : null; // mask & from SWT //$NON-NLS-1$ //$NON-NLS-2$ } /** * Returns text for use as the label of an action to ensure that it is displayed properly. * * @return the cleaned text */ public static String toMenuLabel(String label) { // a tab at the end of the text will make sure that the @ will not create a weird space in the action text // bug 287347: @ at start of task name cause a weird space in activation history menu // https://bugs.eclipse.org/bugs/show_bug.cgi?id=287347 if (label.contains("@")) { //$NON-NLS-1$ label += "\t"; //$NON-NLS-1$ } return LegacyActionTools.escapeMnemonics(label); } public static String getProductName() { return getProductName(null); } public static String getProductName(String defaultName) { IProduct product = Platform.getProduct(); if (product != null) { String productName = product.getName(); if (productName != null) { String LABEL_SDK = "SDK"; //$NON-NLS-1$ if (productName.endsWith(LABEL_SDK)) { productName = productName.substring(0, productName.length() - LABEL_SDK.length()).trim(); } return productName; } } return defaultName; } }