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package rba.tool.core.ui;
import java.util.regex.Pattern;
import org.apache.commons.lang3.StringUtils;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
public class BasicTableViewerColumnFilter extends ViewerFilter {
private String filterString;
private final int[] filterColumns;
public BasicTableViewerColumnFilter(String filterString, int[] filterColumns) {
this.filterString = filterString;
this.filterColumns = filterColumns;
}
@Override
public boolean select(Viewer viewer, Object parentElement, Object element) {
if ((null == filterString) || (StringUtils.isEmpty(filterString))) {
return true;
}
Pattern pattern = Pattern.compile(createRegexFromGlob(filterString), Pattern.CASE_INSENSITIVE);
for (int i : this.filterColumns) {
ITableLabelProvider labelProvider = (ITableLabelProvider) ((TableViewer) viewer).getLabelProvider();
String cellLabel = labelProvider.getColumnText(element, i);
if (pattern.matcher(cellLabel).find()) {
return true;
} else if (cellLabel.toLowerCase().contains(filterString.toLowerCase())) {
return true;
}
}
return false;
}
/**
* Create Regular Expression for filter string
* @param glob
* @return
*/
private String createRegexFromGlob(String glob) {
String out = "^";
for (int i = 0; i < glob.length(); ++i) {
final char c = glob.charAt(i);
switch (c) {
case '*':
out += ".*";
break;
case '?':
out += '.';
break;
default:
out += c;
}
}
out += '$';
return out;
}
public void setFilterString(String filterString) {
this.filterString = filterString;
}
}
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