/*******************************************************************************
* Copyright (c) 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.core.internal.resources.mapping;
import java.util.*;
import org.eclipse.core.resources.*;
import org.eclipse.core.runtime.*;
/**
* Concrete implementation of IResourceDelta used for operation validation
*/
public final class ProposedResourceDelta extends PlatformObject implements IResourceDelta {
protected static int KIND_MASK= 0xFF;
private HashMap children= new HashMap(8);
private IPath movedFromPath;
private IPath movedToPath;
private IResource resource;
private int status;
public ProposedResourceDelta(IResource resource) {
this.resource= resource;
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#accept(org.eclipse.core.resources.IResourceDeltaVisitor)
*/
public void accept(IResourceDeltaVisitor visitor) throws CoreException {
accept(visitor, 0);
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#accept(org.eclipse.core.resources.IResourceDeltaVisitor, boolean)
*/
public void accept(IResourceDeltaVisitor visitor, boolean includePhantoms) throws CoreException {
accept(visitor, includePhantoms ? IContainer.INCLUDE_PHANTOMS : 0);
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#accept(org.eclipse.core.resources.IResourceDeltaVisitor, int)
*/
public void accept(IResourceDeltaVisitor visitor, int memberFlags) throws CoreException {
if (!visitor.visit(this))
return;
for (Iterator iter= children.values().iterator(); iter.hasNext();) {
ProposedResourceDelta childDelta= (ProposedResourceDelta)iter.next();
childDelta.accept(visitor, memberFlags);
}
}
/**
* Adds a child delta to the list of children for this delta node.
*
* @param delta
*/
protected void add(ProposedResourceDelta delta) {
if (children.size() == 0 && status == 0)
setKind(IResourceDelta.CHANGED);
children.put(delta.getResource().getName(), delta);
}
/**
* Adds the given flags to this delta.
*
* @param flags The flags to add
*/
protected void addFlags(int flags) {
//make sure the provided flags don't influence the kind
this.status|= (flags & ~KIND_MASK);
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#findMember(org.eclipse.core.runtime.IPath)
*/
public IResourceDelta findMember(IPath path) {
int segmentCount= path.segmentCount();
if (segmentCount == 0)
return this;
//iterate over the path and find matching child delta
ProposedResourceDelta current= this;
for (int i= 0; i < segmentCount; i++) {
current= (ProposedResourceDelta)current.children.get(path.segment(i));
if (current == null)
return null;
}
return current;
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getAffectedChildren()
*/
public IResourceDelta[] getAffectedChildren() {
return getAffectedChildren(ADDED | REMOVED | CHANGED, IResource.NONE);
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getAffectedChildren(int)
*/
public IResourceDelta[] getAffectedChildren(int kindMask) {
return getAffectedChildren(kindMask, IResource.NONE);
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getAffectedChildren(int, int)
*/
public IResourceDelta[] getAffectedChildren(int kindMask, int memberFlags) {
List result= new ArrayList();
for (Iterator iter= children.values().iterator(); iter.hasNext();) {
ProposedResourceDelta child= (ProposedResourceDelta)iter.next();
if ((child.getKind() & kindMask) != 0)
result.add(child);
}
return (IResourceDelta[])result.toArray(new IResourceDelta[result.size()]);
}
/**
* Returns the child delta corresponding to the given child resource name, or <code>null</code>.
*/
ProposedResourceDelta getChild(String name) {
return (ProposedResourceDelta)children.get(name);
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getFlags()
*/
public int getFlags() {
return status & ~KIND_MASK;
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getFullPath()
*/
public IPath getFullPath() {
return getResource().getFullPath();
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getKind()
*/
public int getKind() {
return status & KIND_MASK;
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getMarkerDeltas()
*/
public IMarkerDelta[] getMarkerDeltas() {
return new IMarkerDelta[0];
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getMovedFromPath()
*/
public IPath getMovedFromPath() {
return movedFromPath;
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getMovedToPath()
*/
public IPath getMovedToPath() {
return movedToPath;
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getProjectRelativePath()
*/
public IPath getProjectRelativePath() {
return getResource().getProjectRelativePath();
}
/* (non-Javadoc)
* @see org.eclipse.core.resources.IResourceDelta#getResource()
*/
public IResource getResource() {
return resource;
}
public void setFlags(int flags) {
status= getKind() | (flags & ~KIND_MASK);
}
protected void setKind(int kind) {
status= getFlags() | (kind & KIND_MASK);
}
protected void setMovedFromPath(IPath path) {
movedFromPath= path;
}
protected void setMovedToPath(IPath path) {
movedToPath= path;
}
/**
* For debugging purposes only.
*/
public String toString() {
return "ProposedDelta(" + resource + ')'; //$NON-NLS-1$
}
}