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/*******************************************************************************
* Copyright (c) 2000, 2018 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ccvs.ui.tags;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.team.internal.ccvs.core.CVSTag;
import org.eclipse.team.internal.ccvs.core.util.StringMatcher;
import org.eclipse.ui.model.IWorkbenchAdapter;
/**
* Workbench model element that returns a filtered list of tags
*/
public class FilteredTagList implements IWorkbenchAdapter, IAdaptable {
private final TagSource tagSource;
private final int[] types;
private StringMatcher matcher;
public FilteredTagList(TagSource tagSource, int[] types) {
this.tagSource = tagSource;
this.types = types;
}
@Override
public Object[] getChildren(Object o) {
CVSTag[] tags = getTags();
List<TagElement> filtered = new ArrayList<>();
for (int i = 0; i < tags.length; i++) {
CVSTag tag = tags[i];
if (select(tag)) {
filtered.add(new TagElement(this, tag));
}
}
return filtered.toArray(new Object[filtered.size()]);
}
private boolean select(CVSTag tag) {
if (matcher == null) return true;
return matcher.match(tag.getName());
}
private CVSTag[] getTags() {
return tagSource.getTags(types);
}
@Override
public ImageDescriptor getImageDescriptor(Object object) {
return null;
}
@Override
public String getLabel(Object o) {
return null;
}
@Override
public Object getParent(Object o) {
return null;
}
@Override
public <T> T getAdapter(Class<T> adapter) {
if (adapter == IWorkbenchAdapter.class) return adapter.cast(this);
return null;
}
public void setPattern(String pattern) {
if (!pattern.endsWith("*")) { //$NON-NLS-1$
pattern += "*"; //$NON-NLS-1$
}
matcher = new StringMatcher(pattern, true, false);
}
public CVSTag[] getMatchingTags() {
CVSTag[] tags = getTags();
List<CVSTag> filtered = new ArrayList<>();
for (int i = 0; i < tags.length; i++) {
CVSTag tag = tags[i];
if (select(tag)) {
filtered.add(tag);
}
}
return filtered.toArray(new CVSTag[filtered.size()]);
}
}
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