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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.team.internal.core.mapping;
import java.util.*;
import org.eclipse.core.resources.mapping.ResourceMapping;
import org.eclipse.core.resources.mapping.ResourceTraversal;
import org.eclipse.team.core.mapping.ISynchronizationScope;
public class ScopeChangeEvent {
private final ISynchronizationScope scope;
private final ResourceMapping[] originalMappings;
private final ResourceTraversal[] originalTraversals;
private boolean expanded;
private boolean contracted;
public ScopeChangeEvent(ISynchronizationScope scope) {
this.scope = scope;
originalMappings = scope.getMappings();
originalTraversals = scope.getTraversals();
}
public boolean hasAdditionalMappings() {
return scope.getMappings().length > originalMappings.length;
}
public ResourceTraversal[] getUncoveredTraversals(CompoundResourceTraversal traversal) {
CompoundResourceTraversal originals = new CompoundResourceTraversal();
originals.addTraversals(originalTraversals);
return originals.getUncoveredTraversals(traversal);
}
public void setExpanded(boolean expanded) {
this.expanded = expanded;
}
public boolean isExpanded() {
return expanded;
}
public void setContracted(boolean contracted) {
this.contracted = contracted;
}
public boolean isContracted() {
return contracted;
}
public ResourceMapping[] getChangedMappings() {
ResourceMapping[] currentMappings = scope.getMappings();
ResourceMapping[] changedMappings;
if (currentMappings.length > originalMappings.length) {
// The number of mappings has increased so we should report the new mappings
Set originalSet = new HashSet();
List result = new ArrayList();
for (int i = 0; i < originalMappings.length; i++) {
ResourceMapping mapping = originalMappings[i];
originalSet.add(mapping);
}
for (int i = 0; i < currentMappings.length; i++) {
ResourceMapping mapping = currentMappings[i];
if (!originalSet.contains(mapping)) {
result.add(mapping);
}
}
changedMappings = (ResourceMapping[]) result.toArray(new ResourceMapping[result.size()]);
} else if (isContracted()) {
// The number of mappings may be smaller so report the removed mappings
Set finalSet = new HashSet();
List result = new ArrayList();
for (int i = 0; i < currentMappings.length; i++) {
ResourceMapping mapping = currentMappings[i];
finalSet.add(mapping);
}
for (int i = 0; i < originalMappings.length; i++) {
ResourceMapping mapping = originalMappings[i];
if (!finalSet.contains(mapping)) {
result.add(mapping);
}
}
changedMappings = (ResourceMapping[]) result.toArray(new ResourceMapping[result.size()]);
} else {
changedMappings = new ResourceMapping[0];
}
return changedMappings;
}
public ResourceTraversal[] getChangedTraversals(CompoundResourceTraversal refreshTraversals) {
ResourceTraversal[] changesTraversals;
if (isExpanded()) {
changesTraversals = getUncoveredTraversals(refreshTraversals);
} else if (isContracted()) {
CompoundResourceTraversal finalTraversals = new CompoundResourceTraversal();
finalTraversals.addTraversals(scope.getTraversals());
changesTraversals = finalTraversals.getUncoveredTraversals(originalTraversals);
} else {
changesTraversals = new ResourceTraversal[0];
}
return changesTraversals;
}
public boolean shouldFireChange() {
return isExpanded() || isContracted() || hasAdditionalMappings();
}
}
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