/*******************************************************************************
* Copyright (c) 2008 Pierre-Antoine Grégoire.
* 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:
* Pierre-Antoine Grégoire - initial API and implementation
*******************************************************************************/
package org.org.eclipse.dws.ui.internal.views;
import java.util.Set;
import java.util.regex.Pattern;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.org.eclipse.core.utils.platform.tools.PatternUtils;
import org.org.eclipse.dws.core.internal.bridges.RepositoryModelUtils;
import org.org.eclipse.dws.core.internal.configuration.AggregatedProperties;
import org.org.eclipse.dws.core.internal.model.librarypack.LibraryPack;
import org.org.model.IModelItem;
import org.org.model.IModelItemVisitor;
import org.org.repository.crawler.maven2.model.ArtifactVersion;
/**
* The Class MavenRepositoriesViewFilter.
*
* @author pagregoire
*/
public class LibraryPacksViewFilter extends ViewerFilter {
private final class MatchingModelItemVisitor implements IModelItemVisitor {
private boolean result;
private MatchingModelItemVisitor() {
}
@SuppressWarnings("rawtypes")
public boolean visit(IModelItem modelItem) {
boolean keepOnVisiting = true;
if (doesMatch(modelItem, PatternUtils.createPattern(userFilter.replaceAll("\\*", ".*") + ".*", false, true))) {
result = true;
keepOnVisiting = false;
}
return keepOnVisiting;
}
public boolean getResult() {
return result;
}
}
private final class ValidArtifactVersionSeeker implements IModelItemVisitor {
private boolean result;
public boolean getResult() {
return result;
}
private ValidArtifactVersionSeeker() {
}
@SuppressWarnings("rawtypes")
public boolean visit(IModelItem modelItem) {
boolean keepOnVisiting = true;
if (modelItem instanceof ArtifactVersion) {
ArtifactVersion artifactVersion = (ArtifactVersion) modelItem;
if (RepositoryModelUtils.isExtensionOk(artifactExtensions, artifactVersion)) {
result = true;
keepOnVisiting = false;
}
}
return keepOnVisiting;
}
}
/** The artifact extensions. */
private Set<String> artifactExtensions = AggregatedProperties.getArtifactExtensions();
/** The user filter. */
private String userFilter = "";
/**
* Select.
*
* @param viewer
* the viewer
* @param parentElement
* the parent element
* @param element
* the element
*
* @return true, if select
*
* @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
@Override
@SuppressWarnings("rawtypes")
public boolean select(Viewer viewer, Object parentElement, Object element) {
boolean result = true;
if (element instanceof IModelItem) {
result = firstPathFilter((IModelItem) element);
if (result) {
if (element instanceof ArtifactVersion) {
result = filterArtifactVersion(element);
} else {
result = filterAnyModelItem((IModelItem) element);
}
} else if (element instanceof LibraryPack) {
result = true;
}
} else {
result = false;
}
return result;
}
/**
* Filter artifact version.
*
* @param element
* the element
*
* @return true, if successful
*/
private boolean filterArtifactVersion(Object element) {
ArtifactVersion artifactVersion = (ArtifactVersion) element;
boolean result = false;
if (doesMatch(artifactVersion, PatternUtils.createPattern(userFilter.replaceAll("\\*", ".*") + ".*", false, true))) {
result = true;
}
return result;
}
/**
* Filter any model item.
*
* @param element
* the element
*
* @return true, if successful
*/
@SuppressWarnings("rawtypes")
private boolean filterAnyModelItem(IModelItem element) {
MatchingModelItemVisitor visitor = new MatchingModelItemVisitor();
element.accept(visitor);
return visitor.getResult();
}
/**
* First path filter.
*
* @param element
* the element
*
* @return true, if successful
*/
@SuppressWarnings("rawtypes")
private boolean firstPathFilter(IModelItem element) {
boolean result = false;
if (element instanceof ArtifactVersion) {
ArtifactVersion artifactVersion = (ArtifactVersion) element;
if (RepositoryModelUtils.isExtensionOk(artifactExtensions, artifactVersion)) {
result = true;
}
} else {
ValidArtifactVersionSeeker visitor = new ValidArtifactVersionSeeker();
element.accept(visitor);
result = visitor.getResult();
}
return result;
}
/**
* Gets the user filter.
*
* @return the user filter
*/
public String getUserFilter() {
return userFilter;
}
/**
* Sets the user filter.
*
* @param userFilter
* the new user filter
*/
public void setUserFilter(String userFilter) {
this.userFilter = userFilter;
}
/**
* Does match.
*
* @param element
* the element
* @param pattern
* the pattern
*
* @return true, if successful
*/
@SuppressWarnings("rawtypes")
protected boolean doesMatch(IModelItem element, Pattern pattern) {
if (element instanceof ArtifactVersion) {
ArtifactVersion artifactVersion = (ArtifactVersion) element;
// Compare bean name first
String toMatch = artifactVersion.getId().substring(0, artifactVersion.getId().lastIndexOf("."));
if (pattern.matcher(toMatch).matches()) {
return true;
}
}
return false;
}
}