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/*******************************************************************************
* Copyright (c) 2018 Wind River Systems, Inc. and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Lidia Popescu - [536255] initial API and implementation. Extension point for open call hierarchy view
*******************************************************************************/
package org.eclipse.cdt.internal.ui.callhierarchy;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
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.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;
import org.eclipse.jface.viewers.IOpenListener;
import org.eclipse.cdt.ui.ICHEContentProvider;
/**
* The Call Hierarchy Extension provider Settings
* Responsible to load all available extensions for EXTENSION_POINT_ID
* */
public class CHEProviderSettings {
private static final String EXTENSION_POINT_ID = "org.eclipse.cdt.ui.CCallHierarchy"; //$NON-NLS-1$
private static final String ELEMENT_NAME_CONTENT = "CallHierarchyContentProvider"; //$NON-NLS-1$
private static final String ELEMENT_NAME_LABEL = "CallHierarchyLabelProvider"; //$NON-NLS-1$
private static final String ATTRIB_CLASS = "class"; //$NON-NLS-1$
IOpenListener[] openListeners =null;
static ICHEContentProvider[] chContentProviders = null;
static IStyledLabelProvider[] chLabelProviders = null;
private static void loadExtensions() {
List<ICHEContentProvider> chCProviders = new ArrayList<ICHEContentProvider>();
List<IStyledLabelProvider> chLProviders = new ArrayList<IStyledLabelProvider>();
IExtensionPoint extensionPoint = Platform.getExtensionRegistry().getExtensionPoint(EXTENSION_POINT_ID);
if (extensionPoint != null) {
IExtension[] extensions = extensionPoint.getExtensions();
if (extensions != null) {
for (IExtension ex : extensions) {
for (IConfigurationElement el : ex.getConfigurationElements()) {
if (el.getName().equals(ELEMENT_NAME_CONTENT)) {
ICHEContentProvider provider = null;
try {
provider = (ICHEContentProvider) el.createExecutableExtension(ATTRIB_CLASS);
} catch (CoreException e) {
e.printStackTrace();
}
if (provider != null) {
chCProviders.add(provider);
}
}
if (el.getName().equals(ELEMENT_NAME_LABEL)) {
IStyledLabelProvider provider = null;
try {
provider = (IStyledLabelProvider) el.createExecutableExtension(ATTRIB_CLASS);
} catch (CoreException e) {
e.printStackTrace();
}
if (provider != null) {
chLProviders.add(provider);
}
}
}
}
}
}
chLabelProviders = chLProviders.toArray(new IStyledLabelProvider[chLProviders.size()]);
chContentProviders = chCProviders.toArray(new ICHEContentProvider[chCProviders.size()]);
}
public static IStyledLabelProvider[] getCCallHierarchyLabelProviders() {
if ( chLabelProviders == null) {
loadExtensions();
}
return chLabelProviders;
}
public static ICHEContentProvider[] getCCallHierarchyContentProviders() {
if ( chContentProviders == null) {
loadExtensions();
}
return chContentProviders;
}
}
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