//------------------------------------------------------------------------------
// Copyright (c) 2005, 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 implementation
//------------------------------------------------------------------------------
package org.eclipse.epf.library.edit.util;
import java.util.Comparator;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.epf.library.edit.PresentationContext;
import org.eclipse.epf.library.edit.navigator.PluginUIPackagesItemProvider;
import org.eclipse.epf.uma.BreakdownElement;
import org.eclipse.epf.uma.DescribableElement;
import org.eclipse.epf.uma.MethodElement;
import org.eclipse.epf.uma.MethodPlugin;
import org.eclipse.epf.uma.ProcessComponent;
import org.eclipse.epf.uma.UmaPackage;
import com.ibm.icu.text.Collator;
/**
* Collection of comparators
*
* @author Phong Nguyen Le
* @since 1.0
*/
public final class Comparators {
public static final Comparator<Object> DEFAULT_COMPARATOR = new Comparator<Object>() {
public int compare(Object o1, Object o2) {
if (o1 == o2)
return 0;
Collator collator = Collator.getInstance();
if (o1 instanceof MethodElement && o2 instanceof MethodElement) {
return collator.compare(((MethodElement) o1).getName(), ((MethodElement) o2).getName());
}
Object o1unwrap = TngUtil.unwrap(o1);
Object o2unwrap = TngUtil.unwrap(o2);
if (o1unwrap instanceof MethodElement
&& o2unwrap instanceof MethodElement) {
return collator.compare(((MethodElement) o1unwrap).getName(), ((MethodElement) o2unwrap).getName());
}
return 0;
}
};
public static final Comparator<Object> REVERSE_DEFAULT_COMPARATOR = new Comparator<Object>() {
public int compare(Object o1, Object o2) {
if (o1 == o2)
return 0;
Collator collator = Collator.getInstance();
if (o1 instanceof MethodElement && o2 instanceof MethodElement) {
return oppositeValue(collator.compare(((MethodElement) o1).getName(), ((MethodElement) o2).getName()));
}
Object o1unwrap = TngUtil.unwrap(o1);
Object o2unwrap = TngUtil.unwrap(o2);
if (o1unwrap instanceof MethodElement
&& o2unwrap instanceof MethodElement) {
return oppositeValue(collator.compare(((MethodElement) o1unwrap).getName(), ((MethodElement) o2unwrap).getName()));
}
return 0;
}
};
private static int oppositeValue(int val) {
if (val != 0) {
val = 0 - val;
}
return val;
}
public static abstract class TypeComparator implements Comparator {
protected Comparator<Object> getDefaultComparator() {
return DEFAULT_COMPARATOR;
}
protected abstract int getOrderId(Object obj);
public int compare(Object o1, Object o2) {
o1 = TngUtil.unwrap(o1);
o2 = TngUtil.unwrap(o2);
if (o1 == o2)
return 0;
int ret = 0;
ret = getOrderId((EObject) o1) - getOrderId((EObject) o2);
if (ret == 0) {
return getDefaultComparator().compare(o1, o2);
}
return ret;
}
}
private static int comparePresentationName(MethodElement e1, MethodElement e2) {
Collator collator = Collator.getInstance();
String name1 = e1 instanceof BreakdownElement ? ProcessUtil.getPresentationName((BreakdownElement)e1)
: e1.getPresentationName();
if (name1.length() < 1) name1 = e1.getName();
String name2 = e2 instanceof BreakdownElement ? ProcessUtil.getPresentationName((BreakdownElement)e2)
: e2.getPresentationName();
if (name2.length() < 1) name2 = e2.getName();
return collator.compare(name1, name2);
}
private static MethodElement getMethodElement(Object obj) {
Object object = TngUtil.unwrap(obj);
if (object instanceof ProcessComponent)
object = ((ProcessComponent) object).getProcess();
object = TngUtil.unwrap(object);
if(object instanceof MethodElement) {
return (MethodElement)object;
}
return null;
}
public static final Comparator<Object> PRESENTATION_NAME_COMPARATOR = new Comparator<Object>() {
public int compare(Object o1, Object o2) {
if (o1 == o2)
return 0;
o1 = getMethodElement(o1);
if (o1 == null) {
return 0;
}
o2 = getMethodElement(o2);
if (o2 == null) {
return 0;
}
return comparePresentationName((MethodElement) o1, (MethodElement) o2);
}
};
public static final Comparator<Object> NAME_GUID_COMPARATOR = new Comparator<Object>() {
public int compare(Object o1, Object o2) {
if (o1 == o2)
return 0;
o1 = getMethodElement(o1);
if (o1 == null) {
return 0;
}
o2 = getMethodElement(o2);
if (o2 == null) {
return 0;
}
MethodElement e1 = (MethodElement) o1;
MethodElement e2 = (MethodElement) o2;
Collator collator = Collator.getInstance();;
return collator.compare(e1.getName() + e1.getGuid(), e2.getName() + e2.getGuid());
}
};
public static final Comparator<Object> REVERSE_PRESENTATION_NAME_COMPARATOR = new Comparator<Object>() {
public int compare(Object o1, Object o2) {
if (o1 == o2)
return 0;
if(!(o1 instanceof DescribableElement)) {
o1 = TngUtil.unwrap(o1);
if(!(o1 instanceof DescribableElement)) {
return 0;
}
}
if(!(o2 instanceof DescribableElement)) {
o2 = TngUtil.unwrap(o2);
if(!(o2 instanceof DescribableElement)) {
return 0;
}
}
return oppositeValue(comparePresentationName((DescribableElement) o1, (DescribableElement) o2));
}
};
public static final Comparator METHOD_TYPE_COMPARATOR = new TypeComparator() {
/* (non-Javadoc)
* @see org.eclipse.epf.library.edit.util.Comparators.TypeComparator#getDefaultComparator()
*/
protected Comparator getDefaultComparator() {
return PresentationContext.INSTANCE.getComparator();
}
protected int getOrderId(Object obj) {
if (obj instanceof MethodElement) {
int id = ((MethodElement) obj).eClass().getClassifierID();
if (id == UmaPackage.TERM_DEFINITION) {
id = Integer.MAX_VALUE;
}
return id;
}
return -1;
}
};
/**
* Always sort by presentation name
*/
public static final Comparator METHOD_TYPE_PRES_NAME_COMPARATOR = new TypeComparator() {
/* (non-Javadoc)
* @see org.eclipse.epf.library.edit.util.Comparators.TypeComparator#getDefaultComparator()
*/
protected Comparator getDefaultComparator() {
return PresentationContext.INSTANCE.getPresNameComparator();
}
protected int getOrderId(Object obj) {
if (obj instanceof MethodElement) {
int id = ((MethodElement) obj).eClass().getClassifierID();
if (id == UmaPackage.TERM_DEFINITION) {
id = Integer.MAX_VALUE;
}
return id;
}
return -1;
}
};
public static final Comparator<Object> PLUGINPACKAGE_COMPARATOR = new Comparator<Object>() {
public int compare(Object o1, Object o2) {
if (o1 == o2)
return 0;
o1 = TngUtil.unwrap(o1);
o2 = TngUtil.unwrap(o2);
if (o1 instanceof PluginUIPackagesItemProvider && o2 instanceof MethodPlugin) {
return -1;
}
if (o1 instanceof MethodPlugin && o2 instanceof PluginUIPackagesItemProvider) {
return 1;
}
boolean usePresName = PresentationContext.INSTANCE.isShowPresentationNames();
String s1 = null;
String s2 = null;
if (usePresName && o1 instanceof DescribableElement) {
s1 = ((DescribableElement) o1).getPresentationName();
} else if (o1 instanceof MethodElement) {
s1 = ((MethodElement) o1).getName();
} else if (o1 instanceof PluginUIPackagesItemProvider) {
s1 = ((PluginUIPackagesItemProvider) o1).getFullName();
} else if (o1 instanceof String) {
s1 = (String) o1;
}
if (usePresName && o2 instanceof DescribableElement) {
s2 = ((DescribableElement) o2).getPresentationName();
} else if (o2 instanceof MethodElement) {
s2 = ((MethodElement) o2).getName();
} else if (o2 instanceof PluginUIPackagesItemProvider) {
s2 = ((PluginUIPackagesItemProvider) o2).getFullName();
} else if (o2 instanceof String) {
s2 = (String) o2;
}
if (s1 == null || s2 == null) {
return 0;
}
return s1.compareToIgnoreCase(s2);
}
};
}