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/*******************************************************************************
* Copyright (c) 2006, 2010 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.compare.internal.patch;
import org.eclipse.compare.IContentChangeListener;
import org.eclipse.compare.IContentChangeNotifier;
import org.eclipse.compare.ITypedElement;
import org.eclipse.compare.internal.core.patch.FileDiffResult;
import org.eclipse.compare.internal.core.patch.FilePatch2;
import org.eclipse.compare.patch.PatchConfiguration;
import org.eclipse.compare.structuremergeviewer.DiffNode;
import org.eclipse.compare.structuremergeviewer.Differencer;
import org.eclipse.compare.structuremergeviewer.IDiffContainer;
import org.eclipse.compare.structuremergeviewer.IDiffElement;
import org.eclipse.core.resources.IResource;
public class PatchFileDiffNode extends PatchDiffNode implements IContentChangeListener {
private final FileDiffResult result;
public static PatchFileDiffNode createDiffNode(DiffNode parent, FileDiffResult result) {
return new PatchFileDiffNode(result, parent, getKind(result), getAncestorElement(result), getLeftElement(result), getRightElement(result));
}
public static int getKind(FileDiffResult result) {
if (!result.hasMatches())
return Differencer.NO_CHANGE;
int fileDiffKind = result.getDiff().getDiffType(result.getConfiguration().isReversed());
int kind = convertFileDiffTypeToDifferencerType(fileDiffKind);
return kind | Differencer.RIGHT;
}
private static int convertFileDiffTypeToDifferencerType(int fileDiffKind) {
int kind;
switch (fileDiffKind) {
case FilePatch2.ADDITION:
kind = Differencer.ADDITION;
break;
case FilePatch2.DELETION:
kind = Differencer.DELETION;
break;
case FilePatch2.CHANGE:
kind = Differencer.CHANGE;
break;
default:
kind = Differencer.CHANGE;
break;
}
return kind;
}
public static ITypedElement getRightElement(FileDiffResult result) {
return new PatchFileTypedElement(result, true);
}
private static ITypedElement getLeftElement(FileDiffResult result) {
return new PatchFileTypedElement(result, false);
}
public static ITypedElement getAncestorElement(FileDiffResult result) {
return new PatchFileTypedElement(result, false);
}
public PatchFileDiffNode(FileDiffResult result, IDiffContainer parent, int kind,
ITypedElement ancestor, ITypedElement left, ITypedElement right) {
super(result.getDiff(), parent, kind, ancestor, left, right);
this.result = result;
}
public FileDiffResult getDiffResult() {
return result;
}
protected PatchConfiguration getConfiguration() {
return result.getConfiguration();
}
/* (non-Javadoc)
* @see org.eclipse.compare.structuremergeviewer.DiffContainer#add(org.eclipse.compare.structuremergeviewer.IDiffElement)
*/
public void add(IDiffElement diff) {
super.add(diff);
// Listen for content changes in unmatched children so we can fire an input change
if (diff instanceof HunkDiffNode) {
HunkDiffNode node = (HunkDiffNode) diff;
Object left = node.getLeft();
if (left instanceof IContentChangeNotifier) {
IContentChangeNotifier notifier = (IContentChangeNotifier) left;
notifier.addContentChangeListener(this);
}
}
}
/* (non-Javadoc)
* @see org.eclipse.compare.IContentChangeListener#contentChanged(org.eclipse.compare.IContentChangeNotifier)
*/
public void contentChanged(IContentChangeNotifier source) {
fireChange();
}
public int getKind() {
int kind = super.getKind();
if (kind == Differencer.NO_CHANGE && getPatcher().hasCachedContents(getDiffResult().getDiff())) {
return Differencer.CHANGE | Differencer.RIGHT;
}
return kind;
}
public boolean fileExists() {
IResource file = getResource();
return file != null && file.isAccessible();
}
public IResource getResource() {
return ((WorkspaceFileDiffResult)getDiffResult()).getTargetFile();
}
}
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