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/*******************************************************************************
* Copyright (c) 2012, 2013 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.internal.debug.ui.model;
import java.util.ArrayList;
import java.util.Collection;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.Platform;
import org.eclipse.tcf.debug.ui.ITCFPrettyExpressionProvider;
import org.eclipse.tcf.internal.debug.ui.Activator;
import org.osgi.framework.Bundle;
/**
* TCF clients can implement ITCFPrettyExpressionProvider to provide human
* readable "pretty expression" strings that represent values of the TCF debug model objects
* to be shown in the debugger views.
*
* TCF will use internal pretty expression if no suitable provider is found
* through "pretty_expression_provider" extension point.
*/
public class TCFPrettyExpressionProvider {
private static ArrayList<ITCFPrettyExpressionProvider> providers;
public static Collection<ITCFPrettyExpressionProvider> getProviders() {
if (providers == null) {
ArrayList<ITCFPrettyExpressionProvider> list = new ArrayList<ITCFPrettyExpressionProvider>();
try {
IExtensionPoint point = Platform.getExtensionRegistry().getExtensionPoint(
Activator.PLUGIN_ID, "pretty_expression_provider"); //$NON-NLS-1$
IExtension[] extensions = point.getExtensions();
for (int i = 0; i < extensions.length; i++) {
try {
Bundle bundle = Platform.getBundle(extensions[i].getContributor().getName());
bundle.start(Bundle.START_TRANSIENT);
IConfigurationElement[] e = extensions[i].getConfigurationElements();
for (int j = 0; j < e.length; j++) {
String nm = e[j].getName();
if (nm.equals("class")) { //$NON-NLS-1$
Class<?> c = bundle.loadClass(e[j].getAttribute("name")); //$NON-NLS-1$
list.add((ITCFPrettyExpressionProvider)c.newInstance());
}
}
}
catch (Throwable x) {
Activator.log("Cannot access pretty expression provider extension points", x);
}
}
}
catch (Exception x) {
Activator.log("Cannot access pretty expression provider extension points", x);
}
providers = list;
}
return providers;
}
}
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