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/*******************************************************************************
* Copyright (c) 2004, 2015 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.intro;
import java.util.ArrayList;
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.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.WorkbenchPlugin;
import org.eclipse.ui.internal.registry.IWorkbenchRegistryConstants;
import org.eclipse.ui.internal.registry.RegistryReader;
/**
* Registry for introduction elements.
*
* @since 3.0
*/
public class IntroRegistry implements IIntroRegistry {
private static final String TAG_INTRO = "intro";//$NON-NLS-1$
private static final String TAG_INTROPRODUCTBINDING = "introProductBinding";//$NON-NLS-1$
private static final String ATT_INTROID = "introId"; //$NON-NLS-1$
private static final String ATT_PRODUCTID = "productId"; //$NON-NLS-1$
@Override
public int getIntroCount() {
return getIntros().length;
}
@Override
public IIntroDescriptor[] getIntros() {
IExtensionPoint point = Platform.getExtensionRegistry().getExtensionPoint(PlatformUI.PLUGIN_ID,
IWorkbenchRegistryConstants.PL_INTRO);
if (point == null) {
return new IIntroDescriptor[0];
}
IExtension[] extensions = point.getExtensions();
extensions = RegistryReader.orderExtensions(extensions);
ArrayList list = new ArrayList(extensions.length);
for (IExtension extension : extensions) {
IConfigurationElement[] elements = extension.getConfigurationElements();
for (IConfigurationElement element : elements) {
if (element.getName().equals(TAG_INTRO)) {
try {
IIntroDescriptor descriptor = new IntroDescriptor(element);
list.add(descriptor);
} catch (CoreException e) {
// log an error since its not safe to open a dialog here
WorkbenchPlugin.log(IntroMessages.Intro_could_not_create_descriptor, e.getStatus());
}
}
}
}
return (IIntroDescriptor[]) list.toArray(new IIntroDescriptor[list.size()]);
}
@Override
public IIntroDescriptor getIntroForProduct(String targetProductId) {
IExtensionPoint point = Platform.getExtensionRegistry().getExtensionPoint(PlatformUI.PLUGIN_ID,
IWorkbenchRegistryConstants.PL_INTRO);
if (point == null) {
return null;
}
IExtension[] extensions = point.getExtensions();
extensions = RegistryReader.orderExtensions(extensions);
String targetIntroId = getIntroForProduct(targetProductId, extensions);
if (targetIntroId == null) {
return null;
}
IIntroDescriptor descriptor = null;
IIntroDescriptor[] intros = getIntros();
for (IIntroDescriptor intro : intros) {
if (intro.getId().equals(targetIntroId)) {
descriptor = intro;
break;
}
}
return descriptor;
}
/**
* @param targetProductId
* @param extensions
* @return
*/
private String getIntroForProduct(String targetProductId, IExtension[] extensions) {
for (IExtension extension : extensions) {
IConfigurationElement[] elements = extension.getConfigurationElements();
for (IConfigurationElement element : elements) {
if (element.getName().equals(TAG_INTROPRODUCTBINDING)) {
String introId = element.getAttribute(ATT_INTROID);
String productId = element.getAttribute(ATT_PRODUCTID);
if (introId == null || productId == null) {
IStatus status = new Status(IStatus.ERROR,
element.getDeclaringExtension().getContributor().getName(), IStatus.ERROR,
"introId and productId must be defined.", new IllegalArgumentException()); //$NON-NLS-1$
WorkbenchPlugin.log("Invalid intro binding", status); //$NON-NLS-1$
continue;
}
if (targetProductId.equals(productId)) {
return introId;
}
}
}
}
return null;
}
@Override
public IIntroDescriptor getIntro(String id) {
IIntroDescriptor[] intros = getIntros();
for (IIntroDescriptor desc : intros) {
if (desc.getId().equals(id)) {
return desc;
}
}
return null;
}
}
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