| /******************************************************************************* |
| * Copyright (c) 2000, 2006 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.dltk.internal.corext.refactoring.reorg; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.dltk.core.DLTKCore; |
| import org.eclipse.dltk.core.IModelElement; |
| |
| |
| |
| public class ParentChecker { |
| private IResource[] fResources; |
| private IModelElement[] fScriptElements; |
| |
| public ParentChecker(IResource[] resources, IModelElement[] modelElements) { |
| Assert.isNotNull(resources); |
| Assert.isNotNull(modelElements); |
| fResources= resources; |
| fScriptElements= modelElements; |
| } |
| |
| public boolean haveCommonParent() { |
| return getCommonParent() != null; |
| } |
| |
| public Object getCommonParent(){ |
| if (fScriptElements.length == 0 && fResources.length == 0) |
| return null; |
| if (! resourcesHaveCommonParent() || ! modelElementsHaveCommonParent()) |
| return null; |
| if (fScriptElements.length == 0){ |
| IResource commonResourceParent= getCommonResourceParent(); |
| Assert.isNotNull(commonResourceParent); |
| IModelElement convertedToScript= DLTKCore.create(commonResourceParent); |
| if (convertedToScript != null && convertedToScript.exists()) |
| return convertedToScript; |
| else |
| return commonResourceParent; |
| } |
| if (fResources.length == 0) |
| return getCommonScriptElementParent(); |
| |
| IResource commonResourceParent= getCommonResourceParent(); |
| IModelElement commonScriptElementParent= getCommonScriptElementParent(); |
| Assert.isNotNull(commonScriptElementParent); |
| Assert.isNotNull(commonResourceParent); |
| IModelElement convertedToScript= DLTKCore.create(commonResourceParent); |
| if (convertedToScript == null || |
| ! convertedToScript.exists() || |
| ! commonScriptElementParent.equals(convertedToScript)) |
| return null; |
| return commonScriptElementParent; |
| } |
| |
| private IModelElement getCommonScriptElementParent() { |
| Assert.isNotNull(fScriptElements); |
| Assert.isTrue(fScriptElements.length > 0);//safe - checked before |
| return fScriptElements[0].getParent(); |
| } |
| |
| private IResource getCommonResourceParent() { |
| Assert.isNotNull(fResources); |
| Assert.isTrue(fResources.length > 0);//safe - checked before |
| return fResources[0].getParent(); |
| } |
| |
| private boolean modelElementsHaveCommonParent() { |
| if (fScriptElements.length == 0) |
| return true; |
| IModelElement firstParent= fScriptElements[0].getParent(); |
| Assert.isNotNull(firstParent); //this should never happen |
| for (int i= 1; i < fScriptElements.length; i++) { |
| if (! firstParent.equals(fScriptElements[i].getParent())) |
| return false; |
| } |
| return true; |
| } |
| |
| private boolean resourcesHaveCommonParent() { |
| if (fResources.length == 0) |
| return true; |
| IResource firstParent= fResources[0].getParent(); |
| Assert.isNotNull(firstParent); |
| for (int i= 1; i < fResources.length; i++) { |
| if (! firstParent.equals(fResources[i].getParent())) |
| return false; |
| } |
| return true; |
| } |
| |
| public IResource[] getResources(){ |
| return fResources; |
| } |
| |
| public IModelElement[] getScriptElements(){ |
| return fScriptElements; |
| } |
| |
| public void removeElementsWithAncestorsOnList(boolean removeOnlyScriptElements) { |
| if (! removeOnlyScriptElements){ |
| removeResourcesDescendantsOfResources(); |
| removeResourcesDescendantsOfScriptElements(); |
| } |
| removeScriptElementsDescendantsOfScriptElements(); |
| // removeScriptElementsChildrenOfResources(); //this case is covered by removeUnconfirmedArchives |
| } |
| |
| private void removeResourcesDescendantsOfScriptElements() { |
| List subResources= new ArrayList(3); |
| for (int i= 0; i < fResources.length; i++) { |
| IResource subResource= fResources[i]; |
| for (int j= 0; j < fScriptElements.length; j++) { |
| IModelElement superElements= fScriptElements[j]; |
| if (isDescendantOf(subResource, superElements)) |
| subResources.add(subResource); |
| } |
| } |
| removeFromSetToDelete((IResource[]) subResources.toArray(new IResource[subResources.size()])); |
| } |
| |
| private void removeScriptElementsDescendantsOfScriptElements() { |
| List subElements= new ArrayList(3); |
| for (int i= 0; i < fScriptElements.length; i++) { |
| IModelElement subElement= fScriptElements[i]; |
| for (int j= 0; j < fScriptElements.length; j++) { |
| IModelElement superElement= fScriptElements[j]; |
| if (isDescendantOf(subElement, superElement)) |
| subElements.add(subElement); |
| } |
| } |
| removeFromSetToDelete((IModelElement[]) subElements.toArray(new IModelElement[subElements.size()])); |
| } |
| |
| private void removeResourcesDescendantsOfResources() { |
| List subResources= new ArrayList(3); |
| for (int i= 0; i < fResources.length; i++) { |
| IResource subResource= fResources[i]; |
| for (int j= 0; j < fResources.length; j++) { |
| IResource superResource= fResources[j]; |
| if (isDescendantOf(subResource, superResource)) |
| subResources.add(subResource); |
| } |
| } |
| removeFromSetToDelete((IResource[]) subResources.toArray(new IResource[subResources.size()])); |
| } |
| |
| public static boolean isDescendantOf(IResource subResource, IModelElement superElement) { |
| IResource parent= subResource.getParent(); |
| while(parent != null){ |
| IModelElement el= DLTKCore.create(parent); |
| if (el != null && el.exists() && el.equals(superElement)) |
| return true; |
| parent= parent.getParent(); |
| } |
| return false; |
| } |
| |
| public static boolean isDescendantOf(IModelElement subElement, IModelElement superElement) { |
| if (subElement.equals(superElement)) |
| return false; |
| IModelElement parent= subElement.getParent(); |
| while(parent != null){ |
| if (parent.equals(superElement)) |
| return true; |
| parent= parent.getParent(); |
| } |
| return false; |
| } |
| |
| public static boolean isDescendantOf(IResource subResource, IResource superResource) { |
| return ! subResource.equals(superResource) && superResource.getFullPath().isPrefixOf(subResource.getFullPath()); |
| } |
| |
| private void removeFromSetToDelete(IResource[] resourcesToNotDelete) { |
| fResources= ReorgUtils.setMinus(fResources, resourcesToNotDelete); |
| } |
| |
| private void removeFromSetToDelete(IModelElement[] elementsToNotDelete) { |
| fScriptElements= ReorgUtils.setMinus(fScriptElements, elementsToNotDelete); |
| } |
| } |