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/*******************************************************************************
* Copyright (c) 2007 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.jst.jsp.core.taglib;
import java.util.ArrayList;
import java.util.Collection;
import org.eclipse.core.resources.IProject;
public class TaglibIndexDelta implements ITaglibIndexDelta {
private Collection fChildren;
private int fExplicitKind = -1;
private int fImplicitKind = -1;
private IProject fProject;
private ITaglibRecord fTaglibRecord = null;
long time;
Object trigger = null;
TaglibIndexDelta(IProject project, ITaglibRecord record, int kind) {
fProject = project;
fTaglibRecord = record;
fExplicitKind = kind;
time = System.currentTimeMillis();
}
void addChildDelta(ITaglibIndexDelta delta) {
if (fChildren == null)
fChildren = new ArrayList();
fChildren.add(delta);
fImplicitKind = -1;
}
private int computeKind() {
int added = 0;
int removed = 0;
ITaglibIndexDelta[] children = (ITaglibIndexDelta[]) fChildren.toArray(new ITaglibIndexDelta[fChildren.size()]);
for (int i = 0; i < children.length; i++) {
int kind = children[i].getKind();
if (kind == ITaglibIndexDelta.ADDED)
added++;
if (kind == ITaglibIndexDelta.REMOVED)
removed++;
if (added > 0 && removed > 0)
break;
}
if (added > 0 && removed > 0) {
return ITaglibIndexDelta.CHANGED;
}
else if (added > 0) {
return ITaglibIndexDelta.ADDED;
}
else if (removed > 0) {
return ITaglibIndexDelta.REMOVED;
}
else {
return ITaglibIndexDelta.CHANGED;
}
}
public ITaglibIndexDelta[] getAffectedChildren() {
if (fChildren == null) {
return new ITaglibIndexDelta[0];
}
return (ITaglibIndexDelta[]) fChildren.toArray(new ITaglibIndexDelta[fChildren.size()]);
}
public int getKind() {
if (fChildren == null) {
return fExplicitKind;
}
if (fImplicitKind == -1) {
fImplicitKind = computeKind();
}
return fImplicitKind;
}
public IProject getProject() {
return fProject;
}
public ITaglibRecord getTaglibRecord() {
return fTaglibRecord;
}
public long getTime() {
return time;
}
public Object getTrigger() {
return trigger;
}
public String toString() {
if (fTaglibRecord != null) {
String string = fTaglibRecord.toString();
int kind = getKind();
switch (kind) {
case ITaglibIndexDelta.ADDED :
string = " ADDED (" + string + ")"; //$NON-NLS-1$ //$NON-NLS-2$
break;
case ITaglibIndexDelta.CHANGED :
string = " CHANGED (" + string + ")"; //$NON-NLS-1$ //$NON-NLS-2$
break;
case ITaglibIndexDelta.REMOVED :
string = " REMOVED (" + string + ")"; //$NON-NLS-1$ //$NON-NLS-2$
break;
default :
string = " other:" + kind + " (" + string + ")"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
break;
}
return string;
}
else {
StringBuffer buffer = new StringBuffer();
int kind = getKind();
switch (kind) {
case ITaglibIndexDelta.ADDED :
buffer.append("TaglibIndexDelta(" + fProject + "):ADDED\n"); //$NON-NLS-1$
break;
case ITaglibIndexDelta.CHANGED :
buffer.append("TaglibIndexDelta(" + fProject + "):CHANGED\n"); //$NON-NLS-1$
break;
case ITaglibIndexDelta.REMOVED :
buffer.append("TaglibIndexDelta(" + fProject + "):REMOVED\n"); //$NON-NLS-1$
break;
}
ITaglibIndexDelta[] children = getAffectedChildren();
for (int i = 0; i < children.length; i++) {
buffer.append('\t');
buffer.append(children[i].toString());
if (i < children.length - 1) {
buffer.append('\n');
}
}
return buffer.toString();
}
}
}
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