/*******************************************************************************
* Copyright (c) 2004, 2015 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 API and implementation
* Lars Vogel <Lars.Vogel@vogella.com> - Bug 445484, 457132, 473947
*******************************************************************************/
package org.eclipse.ui.internal;
import com.ibm.icu.text.MessageFormat;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.util.SafeRunnable;
import org.eclipse.ui.IStartup;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.misc.UIStats;
/**
* A utility class used to call #earlyStartup on the proper instance for a given
* configuration element.
*
* @since 3.0
*/
public class EarlyStartupRunnable extends SafeRunnable {
private IExtension extension;
/**
* @param extension
* must not be null
*/
public EarlyStartupRunnable(IExtension extension) {
this.extension = extension;
}
@Override
public void run() throws Exception {
IConfigurationElement[] configElements = extension.getConfigurationElements();
if (configElements.length == 0) {
missingStartupElementMessage("The org.eclipse.ui.IStartup extension from '" + //$NON-NLS-1$
extension.getNamespaceIdentifier() + "' does not provide a valid '" //$NON-NLS-1$
+ IWorkbenchConstants.TAG_STARTUP + "' element."); //$NON-NLS-1$
}
// look for the startup tag in each element and run the extension
for (IConfigurationElement element : configElements) {
if (element != null&& element.getName().equals(IWorkbenchConstants.TAG_STARTUP)) {
runEarlyStartup(WorkbenchPlugin.createExtension(element, IWorkbenchConstants.TAG_CLASS));
}
}
}
private void missingStartupElementMessage(String message) {
IStatus status = new Status(IStatus.ERROR, PlatformUI.PLUGIN_ID, 0, message, null);
WorkbenchPlugin.log(status);
}
@Override
public void handleException(Throwable exception) {
IStatus status = new Status(IStatus.ERROR, PlatformUI.PLUGIN_ID, 0,
"Unable to execute early startup code for the org.eclipse.ui.IStartup extension contributed by the '" //$NON-NLS-1$
+ extension.getNamespaceIdentifier() + "' plug-in.", //$NON-NLS-1$
exception);
WorkbenchPlugin.log(status);
}
private void runEarlyStartup(Object executableExtension) {
if (executableExtension instanceof IStartup) {
String methodName = executableExtension.getClass().getName() + ".earlyStartup"; //$NON-NLS-1$
try {
UIStats.start(UIStats.EARLY_STARTUP, methodName);
((IStartup) executableExtension).earlyStartup();
} finally {
UIStats.end(UIStats.EARLY_STARTUP, executableExtension, methodName);
}
} else {
String message = executableExtension == null ?
"The org.eclipse.ui.IStartup extension from '" + extension.getNamespaceIdentifier() //$NON-NLS-1$
+ "' does not provide a valid class attribute." : //$NON-NLS-1$
MessageFormat.format("Startup class {0} must implement org.eclipse.ui.IStartup", //$NON-NLS-1$
executableExtension.getClass().getName());
IStatus status =
new Status(IStatus.ERROR, PlatformUI.PLUGIN_ID, 0, message, null);
WorkbenchPlugin.log(status);
}
}
}