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/*******************************************************************************
* Copyright (c) 2008 Obeo.
* 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:
* Jerome Benois (Obeo) jerome.benois@obeo.fr - initial API and implementation
* Tristan Faure (Atos Origin) tristan.faure@atosorigin.com - add condition to the create command (task #296902)
*******************************************************************************/
package org.eclipse.papyrus.infra.core.extension.commands;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.papyrus.infra.core.extension.ExtensionException;
import org.eclipse.papyrus.infra.core.extension.ExtensionUtils;
import org.eclipse.papyrus.infra.core.utils.IDebugChannel;
import org.eclipse.papyrus.infra.core.utils.PapyrusTrace;
import org.eclipse.ui.plugin.AbstractUIPlugin;
/**
* A factory used to create CreationCommand object from Eclipse extensions
* points elements.
*
* @author <a href="mailto:jerome.benois@obeo.fr">Jerome Benois</a>
*/
public class CreationCommandExtensionFactory extends ExtensionUtils {
/** singleton eINSTANCE of this class */
public final static CreationCommandExtensionFactory eINSTANCE = new CreationCommandExtensionFactory();
/** constant for the creation command **/
public final static String CREATION_COMMAND_EXTENSIONPOINT = "creationCommand";
/** constant for the attribute creationCommandClass **/
public final static String CREATION_COMMAND_CLASS_ATTR = "creationCommandClass";
/** constant for the attribute creationCommandClass **/
public final static String CONDITION_COMMAND_CLASS_ATTR = "creationCondition";
/** constant for the attribute label **/
public final static String LABEL_ATTR = "label";
/** constant for the attribute contextId **/
public final static String ID_ATTRIBUTE = "id";
/** constant for the attribute icon **/
public final static String ICON_ATTR = "icon";
/** constant for the attribute language **/
public final static String LANGUAGE_ATTR = "language";
/**
* @return the eINSTANCE
*/
public static CreationCommandExtensionFactory getInstance() {
return eINSTANCE;
}
/**
* Create a CreationCommand instance corresponding to the
* ConfigurationElement.
*
* @param element
* an {@link IConfigurationElement} see eclipse extension point
* @return a CreationCommandDescriptor structure that contains information
* to the creation diagram command
* @throws BadNameExtensionException
**/
public CreationCommandDescriptor createCreationCommand(IConfigurationElement element) throws ExtensionException {
CreationCommandDescriptor res;
checkTagName(element, CREATION_COMMAND_EXTENSIONPOINT);
res = new CreationCommandDescriptor();
res.creationCommandClass = (Class<ICreationCommand>)parseClass(element, CREATION_COMMAND_CLASS_ATTR, CREATION_COMMAND_EXTENSIONPOINT);
res.commandId = element.getAttribute(ID_ATTRIBUTE);
res.label = element.getAttribute(LABEL_ATTR);
res.language = element.getAttribute(LANGUAGE_ATTR);
String iconPath = element.getAttribute(ICON_ATTR);
if(iconPath != null) {
res.icon = AbstractUIPlugin.imageDescriptorFromPlugin(element.getNamespaceIdentifier(), iconPath);
}
String attributeForCreationCondition = element.getAttribute(CONDITION_COMMAND_CLASS_ATTR);
if(attributeForCreationCondition != null && attributeForCreationCondition.length() > 0) {
Class<ICreationCondition> classCondition = (Class<ICreationCondition>)parseClass(element, CONDITION_COMMAND_CLASS_ATTR, CREATION_COMMAND_EXTENSIONPOINT);
if(classCondition != null) {
try {
res.setCondition(classCondition.newInstance());
} catch (InstantiationException e) {
throw new ExtensionException("can nott instantiate class : " + e.getMessage());
} catch (IllegalAccessException e) {
throw new ExtensionException("can nott acces to class : " + e.getMessage());
}
}
}
PapyrusTrace.trace(IDebugChannel.PAPYRUS_EXTENSIONPOINT_LOADING, this, "a creation command ready " + res);
return res;
}
}
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