| /******************************************************************************* |
| * Copyright (c) 2005, 2008 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.wst.jsdt.internal.ui.compare; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.InputStream; |
| |
| import org.eclipse.compare.HistoryItem; |
| import org.eclipse.compare.IEncodedStreamContentAccessor; |
| import org.eclipse.compare.IResourceProvider; |
| import org.eclipse.compare.ITypedElement; |
| import org.eclipse.compare.ResourceNode; |
| import org.eclipse.compare.structuremergeviewer.DocumentRangeNode; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IFileState; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.wst.jsdt.core.dom.ASTNode; |
| import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin; |
| |
| /** |
| * Implements the IStreamContentAccessor and ITypedElement protocols |
| * for a TextBuffer. |
| */ |
| class JavaTextBufferNode implements ITypedElement, IEncodedStreamContentAccessor, IResourceProvider { |
| |
| private IFile fFile; |
| private IDocument fDocument; |
| private boolean fInEditor; |
| |
| JavaTextBufferNode(IFile file, IDocument document, boolean inEditor) { |
| fFile= file; |
| fDocument= document; |
| fInEditor= inEditor; |
| } |
| |
| public String getName() { |
| if (fInEditor) |
| return CompareMessages.Editor_Buffer; |
| return CompareMessages.Workspace_File; |
| } |
| |
| public String getType() { |
| return "java"; //$NON-NLS-1$ |
| } |
| |
| public Image getImage() { |
| return null; |
| } |
| |
| public InputStream getContents() { |
| return new ByteArrayInputStream(JavaCompareUtilities.getBytes(fDocument.get(), "UTF-16")); //$NON-NLS-1$ |
| } |
| |
| public String getCharset() { |
| return "UTF-16"; //$NON-NLS-1$ |
| } |
| |
| public IResource getResource() { |
| return fFile; |
| } |
| |
| static final ITypedElement[] buildEditions(ITypedElement target, IFile file) { |
| |
| // setup array of editions |
| IFileState[] states= null; |
| // add available editions |
| try { |
| states= file.getHistory(null); |
| } catch (CoreException ex) { |
| JavaScriptPlugin.log(ex); |
| } |
| |
| int count= 1; |
| if (states != null) |
| count+= states.length; |
| |
| ITypedElement[] editions= new ITypedElement[count]; |
| editions[0]= new ResourceNode(file); |
| if (states != null) |
| for (int i= 0; i < states.length; i++) |
| editions[i+1]= new HistoryItem(target, states[i]); |
| return editions; |
| } |
| |
| /** |
| * Returns the corresponding place holder type for the given element. |
| * @return a place holder type (see ASTRewrite) or -1 if there is no corresponding placeholder |
| */ |
| static final int getPlaceHolderType(ITypedElement element) { |
| |
| if (element instanceof DocumentRangeNode) { |
| JavaNode jn= (JavaNode) element; |
| switch (jn.getTypeCode()) { |
| |
| case JavaNode.PACKAGE: |
| return ASTNode.PACKAGE_DECLARATION; |
| |
| case JavaNode.CLASS: |
| case JavaNode.INTERFACE: |
| return ASTNode.TYPE_DECLARATION; |
| |
| |
| case JavaNode.CONSTRUCTOR: |
| case JavaNode.METHOD: |
| return ASTNode.FUNCTION_DECLARATION; |
| |
| case JavaNode.FIELD: |
| return ASTNode.FIELD_DECLARATION; |
| |
| case JavaNode.INIT: |
| return ASTNode.INITIALIZER; |
| |
| case JavaNode.IMPORT: |
| case JavaNode.IMPORT_CONTAINER: |
| return ASTNode.IMPORT_DECLARATION; |
| |
| case JavaNode.CU: |
| return ASTNode.JAVASCRIPT_UNIT; |
| } |
| } |
| return -1; |
| } |
| } |