| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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.compare; |
| |
| import org.eclipse.swt.graphics.Image; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.text.IDocument; |
| |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| |
| import org.eclipse.compare.ITypedElement; |
| import org.eclipse.compare.structuremergeviewer.DocumentRangeNode; |
| |
| /** |
| * Comparable Java elements are represented as JavaNodes. |
| * Extends the DocumentRangeNode with method signature information. |
| */ |
| class JavaNode extends DocumentRangeNode implements ITypedElement { |
| |
| public static final int CU= 0; |
| public static final int PACKAGE= 1; |
| public static final int IMPORT_CONTAINER= 2; |
| public static final int IMPORT= 3; |
| public static final int INTERFACE= 4; |
| public static final int CLASS= 5; |
| public static final int ENUM= 6; |
| public static final int ANNOTATION= 7; |
| public static final int FIELD= 8; |
| public static final int INIT= 9; |
| public static final int CONSTRUCTOR= 10; |
| public static final int METHOD= 11; |
| |
| private int fInitializerCount= 1; |
| private boolean fIsEditable; |
| private JavaNode fParent; |
| |
| |
| /** |
| * Creates a JavaNode under the given parent. |
| * @param type the Java elements type. Legal values are from the range CU to METHOD of this class. |
| * @param name the name of the Java element |
| * @param start the starting position of the java element in the underlying document |
| * @param length the number of characters of the java element in the underlying document |
| */ |
| public JavaNode(JavaNode parent, int type, String name, int start, int length) { |
| super(type, JavaCompareUtilities.buildID(type, name), parent.getDocument(), start, length); |
| fParent= parent; |
| if (parent != null) { |
| parent.addChild(this); |
| fIsEditable= parent.isEditable(); |
| } |
| } |
| |
| /** |
| * Creates a JavaNode for a CU. It represents the root of a |
| * JavaNode tree, so its parent is null. |
| * @param document the document which contains the Java element |
| * @param editable whether the document can be modified |
| */ |
| public JavaNode(IDocument document, boolean editable) { |
| super(CU, JavaCompareUtilities.buildID(CU, "root"), document, 0, document.getLength()); //$NON-NLS-1$ |
| fIsEditable= editable; |
| } |
| |
| public String getInitializerCount() { |
| return Integer.toString(fInitializerCount++); |
| } |
| |
| /** |
| * Extracts the method name from the signature. |
| * Used for smart matching. |
| */ |
| public String extractMethodName() { |
| String id= getId(); |
| int pos= id.indexOf('('); |
| if (pos > 0) |
| return id.substring(1, pos); |
| return id.substring(1); |
| } |
| |
| /** |
| * Extracts the method's arguments name the signature. |
| * Used for smart matching. |
| */ |
| public String extractArgumentList() { |
| String id= getId(); |
| int pos= id.indexOf('('); |
| if (pos >= 0) |
| return id.substring(pos+1); |
| return id.substring(1); |
| } |
| |
| /** |
| * Returns a name which is presented in the UI. |
| * @see ITypedElement#getName() |
| */ |
| public String getName() { |
| |
| switch (getTypeCode()) { |
| case INIT: |
| return CompareMessages.JavaNode_initializer; |
| case IMPORT_CONTAINER: |
| return CompareMessages.JavaNode_importDeclarations; |
| case CU: |
| return CompareMessages.JavaNode_compilationUnit; |
| case PACKAGE: |
| return CompareMessages.JavaNode_packageDeclaration; |
| } |
| return getId().substring(1); // we strip away the type character |
| } |
| |
| /* |
| * @see ITypedElement#getType() |
| */ |
| public String getType() { |
| return "java2"; //$NON-NLS-1$ |
| } |
| |
| /* (non Javadoc) |
| * see IEditableContent.isEditable |
| */ |
| public boolean isEditable() { |
| return fIsEditable; |
| } |
| |
| /** |
| * Returns a shared image for this Java element. |
| * |
| * see ITypedInput.getImage |
| */ |
| public Image getImage() { |
| |
| ImageDescriptor id= null; |
| |
| switch (getTypeCode()) { |
| case CU: |
| id= JavaCompareUtilities.getImageDescriptor(IJavaElement.COMPILATION_UNIT); |
| break; |
| case PACKAGE: |
| id= JavaCompareUtilities.getImageDescriptor(IJavaElement.PACKAGE_DECLARATION); |
| break; |
| case IMPORT: |
| id= JavaCompareUtilities.getImageDescriptor(IJavaElement.IMPORT_DECLARATION); |
| break; |
| case IMPORT_CONTAINER: |
| id= JavaCompareUtilities.getImageDescriptor(IJavaElement.IMPORT_CONTAINER); |
| break; |
| case CLASS: |
| id= JavaCompareUtilities.getTypeImageDescriptor(true); |
| break; |
| case INTERFACE: |
| id= JavaCompareUtilities.getTypeImageDescriptor(false); |
| break; |
| case INIT: |
| id= JavaCompareUtilities.getImageDescriptor(IJavaElement.INITIALIZER); |
| break; |
| case CONSTRUCTOR: |
| case METHOD: |
| id= JavaCompareUtilities.getImageDescriptor(IJavaElement.METHOD); |
| break; |
| case FIELD: |
| id= JavaCompareUtilities.getImageDescriptor(IJavaElement.FIELD); |
| break; |
| case ENUM: |
| id= JavaCompareUtilities.getEnumImageDescriptor(); |
| break; |
| case ANNOTATION: |
| id= JavaCompareUtilities.getAnnotationImageDescriptor(); |
| break; |
| } |
| return JavaPlugin.getImageDescriptorRegistry().get(id); |
| } |
| |
| public void setContent(byte[] content) { |
| super.setContent(content); |
| nodeChanged(this); |
| } |
| |
| public ITypedElement replace(ITypedElement child, ITypedElement other) { |
| nodeChanged(this); |
| return child; |
| } |
| |
| void nodeChanged(JavaNode node) { |
| if (fParent != null) |
| fParent.nodeChanged(node); |
| } |
| } |
| |