Bug 264899 Replace context name with computable debug string
Contexts currently are required to have a name, but this string is only used for debugging purposes. We should instead store this "debug string" in the context itself, allowing clients to use a computed value to add additional debug information. We can make this name optional by supplying a default value, which simplifies life for clients that don't care about the name (much as toString() is optional and a default is provided for those who don't care to implement it).
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/workbench/ui/internal/WorkbenchApplication.java
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 * Copyright (c) 2009 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
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 * Contributors:
 *     IBM Corporation - initial API and implementation
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package org.eclipse.e4.workbench.ui.internal;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.IProduct;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.RegistryFactory;
import org.eclipse.e4.core.services.context.EclipseContextFactory;
import org.eclipse.e4.core.services.context.IEclipseContext;
import org.eclipse.e4.workbench.ui.IWorkbench;
import org.eclipse.e4.workbench.ui.WorkbenchFactory;
import org.eclipse.emf.common.util.URI;
import org.eclipse.equinox.app.IApplication;
import org.eclipse.equinox.app.IApplicationContext;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.osgi.service.datalocation.Location;
import org.eclipse.swt.widgets.Display;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Filter;