org.eclipse.compare.HistoryItem Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2011 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;
import java.io.InputStream;
import java.io.BufferedInputStream;
import org.eclipse.swt.graphics.Image;
import org.eclipse.compare.IResourceProvider;
import org.eclipse.core.resources.IEncodedStorage;
import org.eclipse.core.resources.IFileState;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
/**
* A combination IFileState and ITypedElement that can be used as
* an input to a compare viewer or other places where an IStreamContentAccessor
* is needed.
*
*
* Clients may instantiate this class; it is not intended to be subclassed.
*
* @noextend This class is not intended to be subclassed by clients.
*/
public class HistoryItem implements IEncodedStreamContentAccessor, ITypedElement, IModificationDate, IResourceProvider {
private ITypedElement fBase;
private IFileState fFileState;
/**
* Creates a HistoryItem object which combines the given IFileState
* and ITypedElement into an object
* which is suitable as input for a compare viewer or ReplaceWithEditionDialog.
*
* @param base the implementation of the ITypedElement interface delegates to this base ITypedElement
* @param fileState the IFileState from which the streamable contents and the modification time is derived from
*/
public HistoryItem(ITypedElement base, IFileState fileState) {
fBase= base;
fFileState= fileState;
}
/* (non-Javadoc)
* see ITypedElement.getName
*/
@Override
public String getName() {
return fBase.getName();
}
/* (non-Javadoc)
* see ITypedElement.getImage
*/
@Override
public Image getImage() {
return fBase.getImage();
}
/* (non-Javadoc)
* see ITypedElement.getType
*/
@Override
public String getType() {
return fBase.getType();
}
/* (non-Javadoc)
* see IModificationDate.getModificationDate
*/
@Override
public long getModificationDate() {
return fFileState.getModificationTime();
}
/* (non-Javadoc)
* see IStreamContentAccessor.getContents
*/
@Override
public InputStream getContents() throws CoreException {
return new BufferedInputStream(fFileState.getContents());
}
/* (non-Javadoc)
* @see org.eclipse.compare.IEncodedStreamContentAccessor#getCharset()
*/
@Override
public String getCharset() throws CoreException {
String charset= fFileState.getCharset();
if (charset == null) {
IResource resource= getResource();
if (resource instanceof IEncodedStorage)
charset= ((IEncodedStorage)resource).getCharset();
}
return charset;
}
/* (non-Javadoc)
* @see org.eclipse.compare.internal.IResourceProvider#getResource()
*/
@Override
public IResource getResource() {
IPath fullPath= fFileState.getFullPath();
return ResourcesPlugin.getWorkspace().getRoot().findMember(fullPath);
}
}