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/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
*
* 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:
* Tatiana Fesenko (CEA LIST) - Initial API and implementation
* Saadia Dhouib (CEA LIST) - Implementation of loading diagrams from template files (.uml, .di , .notation)
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.wizards.template;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.papyrus.core.extension.commands.CreationCommandDescriptor;
/**
* The Class ModelTemplatesContentProvider.
*/
public class ModelTemplatesContentProvider implements IStructuredContentProvider {
/** The Constant EXTENSION_POINT_ID. */
private static final String EXTENSION_POINT_ID = "org.eclipse.papyrus.uml.diagram.wizards.templates"; //$NON-NLS-1$
/** The Constant ATTRIBUTE_NAME. */
private static final String ATTRIBUTE_NAME = "name"; //$NON-NLS-1$
/** The Constant ATTRIBUTE_FILE. */
private static final String ATTRIBUTE_UML_FILE = "file"; //$NON-NLS-1$
/** The Constant ATTRIBUTE_NOTATION_FILE. */
private static final String ATTRIBUTE_NOTATION_FILE = "notation_file"; //$NON-NLS-1$
/** The Constant ATTRIBUTE_DI_FILE. */
private static final String ATTRIBUTE_DI_FILE = "di_file"; //$NON-NLS-1$
/** The Constant ATTRIBUTE_LANGUAGE. */
private static final String ATTRIBUTE_LANGUAGE = "language"; //$NON-NLS-1$
/** The my template descriptions. */
private ModelTemplateDescription[] myTemplateDescriptions;
/**
* Dispose.
*
* @see org.eclipse.jface.viewers.IContentProvider#dispose()
*/
public void dispose() {
// TODO Auto-generated method stub
}
/**
* Gets the templates description.
*
* @return the templates description
*/
private ModelTemplateDescription[] getTemplatesDescription() {
if (myTemplateDescriptions == null) {
List<ModelTemplateDescription> templates = new ArrayList<ModelTemplateDescription>();
IExtensionRegistry registry = Platform.getExtensionRegistry();
IExtension[] extensions = registry.getExtensionPoint(EXTENSION_POINT_ID).getExtensions();
for(IExtension extension : extensions) {
templates.addAll(processExtension(extension));
}
myTemplateDescriptions = templates.toArray(new ModelTemplateDescription[templates.size()]);
}
return myTemplateDescriptions;
}
/**
* Process extension.
*
* @param extension the extension
* @return the collection
*/
private Collection<ModelTemplateDescription> processExtension(IExtension extension) {
List<ModelTemplateDescription> templates = new ArrayList<ModelTemplateDescription>();
for(IConfigurationElement configElement : extension.getConfigurationElements()) {
ModelTemplateDescription template = new ModelTemplateDescription(configElement.getAttribute(ATTRIBUTE_NAME), extension.getContributor().getName(), configElement.getAttribute(ATTRIBUTE_UML_FILE),configElement.getAttribute(ATTRIBUTE_NOTATION_FILE),configElement.getAttribute(ATTRIBUTE_DI_FILE));
template.setLanguage(configElement.getAttribute(ATTRIBUTE_LANGUAGE));
templates.add(template);
}
return templates;
}
/**
* Gets the elements.
*
* @param inputElement the input element
* @return the elements
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
public Object[] getElements(Object inputElement) {
if(inputElement instanceof Object[]) {
List<ModelTemplateDescription> result = new ArrayList<ModelTemplateDescription>();
for (Object next: (Object[])inputElement) {
if (next instanceof String) {
String diagramCategory = (String)next;
for(ModelTemplateDescription template : getTemplatesDescription()) {
if(diagramCategory == null || diagramCategory.equals(template.getLanguage())) {
result.add(template);
}
}
}
}
return result.toArray();
}
return new Object[0];
}
/**
* Input changed.
*
* @param viewer the viewer
* @param oldInput the old input
* @param newInput the new input
* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
if(viewer instanceof TableViewer) {
((TableViewer)viewer).add(getElements(null));
}
}
}
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