| /******************************************************************************* |
| * 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.jdt.internal.ui.viewsupport; |
| |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerSorter; |
| |
| import org.eclipse.jdt.core.Flags; |
| import org.eclipse.jdt.core.IClassFile; |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IMember; |
| import org.eclipse.jdt.core.ISourceRange; |
| import org.eclipse.jdt.core.ISourceReference; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaModelException; |
| |
| |
| /** |
| * Viewer sorter which sorts the Java elements like |
| * they appear in the source. |
| * |
| * @since 3.2 |
| */ |
| public class SourcePositionSorter extends ViewerSorter { |
| |
| /* |
| * @see org.eclipse.jface.viewers.ViewerSorter#compare(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) |
| */ |
| public int compare(Viewer viewer, Object e1, Object e2) { |
| if (!(e1 instanceof ISourceReference)) |
| return 0; |
| if (!(e2 instanceof ISourceReference)) |
| return 0; |
| |
| IJavaElement parent1= ((IJavaElement)e1).getParent(); |
| if (parent1 == null || !parent1.equals(((IJavaElement)e2).getParent())) { |
| IType t1= getOutermostDeclaringType(e1); |
| if (t1 == null) |
| return 0; |
| |
| IType t2= getOutermostDeclaringType(e2); |
| try { |
| if (!t1.equals(t2)) { |
| if (t2 == null) |
| return 0; |
| |
| if (Flags.isPublic(t1.getFlags()) && Flags.isPublic(t2.getFlags())) |
| return 0; |
| |
| if (!t1.getPackageFragment().equals(t2.getPackageFragment())) |
| return 0; |
| |
| ICompilationUnit cu1= (ICompilationUnit)((IJavaElement)e1).getAncestor(IJavaElement.COMPILATION_UNIT); |
| if (cu1 != null) { |
| if (!cu1.equals(((IJavaElement)e2).getAncestor(IJavaElement.COMPILATION_UNIT))) |
| return 0; |
| } else { |
| IClassFile cf1= (IClassFile)((IJavaElement)e1).getAncestor(IJavaElement.CLASS_FILE); |
| if (cf1 == null) |
| return 0; |
| IClassFile cf2= (IClassFile)((IJavaElement)e2).getAncestor(IJavaElement.CLASS_FILE); |
| String source1= cf1.getSource(); |
| if (source1 != null && !source1.equals(cf2.getSource())) |
| return 0; |
| } |
| } |
| } catch (JavaModelException e3) { |
| return 0; |
| } |
| } |
| |
| try { |
| ISourceRange sr1= ((ISourceReference)e1).getSourceRange(); |
| ISourceRange sr2= ((ISourceReference)e2).getSourceRange(); |
| if (sr1 == null || sr2 == null) |
| return 0; |
| |
| return sr1.getOffset() - sr2.getOffset(); |
| |
| } catch (JavaModelException e) { |
| return 0; |
| } |
| } |
| |
| private IType getOutermostDeclaringType(Object element) { |
| if (!(element instanceof IMember)) |
| return null; |
| |
| IType declaringType; |
| if (element instanceof IType) |
| declaringType= (IType)element; |
| else { |
| declaringType= ((IMember)element).getDeclaringType(); |
| if (declaringType == null) |
| return null; |
| } |
| |
| IType declaringTypeDeclaringType= declaringType.getDeclaringType(); |
| while (declaringTypeDeclaringType != null) { |
| declaringType= declaringTypeDeclaringType; |
| declaringTypeDeclaringType= declaringType.getDeclaringType(); |
| } |
| return declaringType; |
| } |
| } |