diff options
Diffstat (limited to 'plugins/facet/org.eclipse.papyrus.emf.facet.custom.ui/src/org/eclipse/papyrus/emf/facet/custom/ui/internal/query/DefaultGetParentQuery.java')
| -rw-r--r-- | plugins/facet/org.eclipse.papyrus.emf.facet.custom.ui/src/org/eclipse/papyrus/emf/facet/custom/ui/internal/query/DefaultGetParentQuery.java | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/plugins/facet/org.eclipse.papyrus.emf.facet.custom.ui/src/org/eclipse/papyrus/emf/facet/custom/ui/internal/query/DefaultGetParentQuery.java b/plugins/facet/org.eclipse.papyrus.emf.facet.custom.ui/src/org/eclipse/papyrus/emf/facet/custom/ui/internal/query/DefaultGetParentQuery.java new file mode 100644 index 00000000000..adbd067c07c --- /dev/null +++ b/plugins/facet/org.eclipse.papyrus.emf.facet.custom.ui/src/org/eclipse/papyrus/emf/facet/custom/ui/internal/query/DefaultGetParentQuery.java @@ -0,0 +1,57 @@ +/***************************************************************************** + * Copyright (c) 2017 EclipseSource 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: + * EclipseSource - Initial API and implementation + * + *****************************************************************************/ + +package org.eclipse.papyrus.emf.facet.custom.ui.internal.query; + +import org.eclipse.emf.ecore.EObject; +import org.eclipse.jface.viewers.ITreeContentProvider; +import org.eclipse.papyrus.emf.facet.efacet.core.IFacetManager; +import org.eclipse.papyrus.emf.facet.efacet.core.exception.DerivedTypedElementException; +import org.eclipse.papyrus.emf.facet.query.java.core.IJavaQuery2; +import org.eclipse.papyrus.emf.facet.query.java.core.IParameterValueList2; + +/** + * <p> + * Default implementation of the #parent customization operation. This implementation + * returns the {@link EObject#eContainer() EObject's container}. + * </p> + * <p> + * The #parent customization operation is used to customize the behavior of {@link ITreeContentProvider#getParent(Object)}, + * used to efficiently reveal elements in a custom tree structure. + * </p> + * <p> + * This default implementation is sufficient when displaying the natural containment tree, + * even if the intermediate references are customized. It should however be customized when + * removing natural containers (e.g. when simplifying the tree structure) or introducing + * a custom containment tree (e.g. when moving an element to a different parent) + * </p> + * + * @since 3.1 + */ +public class DefaultGetParentQuery implements IJavaQuery2<EObject, EObject> { + + /** + * @see org.eclipse.papyrus.emf.facet.query.java.core.IJavaQuery2#evaluate(org.eclipse.emf.ecore.EObject, org.eclipse.papyrus.emf.facet.query.java.core.IParameterValueList2, org.eclipse.papyrus.emf.facet.efacet.core.IFacetManager) + * + * @param source + * @param parameterValues + * @param facetManager + * @return + * @throws DerivedTypedElementException + */ + @Override + public EObject evaluate(EObject source, IParameterValueList2 parameterValues, IFacetManager facetManager) throws DerivedTypedElementException { + return source.eContainer(); + } + +} |