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XViewerTextFilter.java
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XViewerTextFilter.java
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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
*
* 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:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.nebula.widgets.xviewer;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.jface.viewers.IBaseLabelProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.nebula.widgets.xviewer.core.model.ColumnDateFilter;
import org.eclipse.nebula.widgets.xviewer.core.model.DateRangeType;
import org.eclipse.nebula.widgets.xviewer.core.model.SortDataType;
import org.eclipse.nebula.widgets.xviewer.core.model.XViewerColumn;
import org.eclipse.nebula.widgets.xviewer.core.util.Strings;
/**
* @author Donald G. Dunne
*/
public class XViewerTextFilter extends ViewerFilter {
protected final XViewer xViewer;
protected Pattern textPattern;
protected Matcher matcher;
protected final Map<String, Pattern> colIdToPattern = new HashMap<String, Pattern>();
protected final Map<String, ColumnDateFilter> colIdToDateFilter = new HashMap<String, ColumnDateFilter>();
protected static final Pattern EMPTY_STR_PATTERN = Pattern.compile("");
protected static final Pattern NOT_EMPTY_STR_PATTERN = Pattern.compile("^.+$");
private final Set<Object> parentMatches = new HashSet<Object>();
public XViewerTextFilter(XViewer xViewer) {
this.xViewer = xViewer;
}
/**
* Setup all patterns for text and column text filters
*/
public void update() {
parentMatches.clear();
// Update text filter pattern
if (!Strings.isValid(xViewer.getCustomizeMgr().getFilterText())) {
textPattern = null;
} else {
int flags = Pattern.CASE_INSENSITIVE;
if (!xViewer.getCustomizeMgr().isFilterTextRegularExpression()) {
flags = Pattern.LITERAL | flags;
}
textPattern = Pattern.compile(xViewer.getCustomizeMgr().getFilterText(), flags);
}
// Update column filter patterns
colIdToPattern.clear();
colIdToDateFilter.clear();
for (String colId : xViewer.getCustomizeMgr().getColumnFilterData().getColIds()) {
String colFilterText = xViewer.getCustomizeMgr().getColumnFilterText(colId);
if (colFilterText != null) {
boolean isWrapped = (colFilterText.matches("^\\(.*\\)$"));
boolean isNot;
if (isWrapped) {
colFilterText = colFilterText.substring(1, colFilterText.length() - 1);
}
isNot = colFilterText.startsWith("!");
if (isNot) {
colFilterText = colFilterText.replaceFirst("^!", "");
}
colFilterText = Pattern.quote(colFilterText);
// Handle != case ^(.(?<!big))*$
if (isNot) {
if (colFilterText.equals("")) {
colIdToPattern.put(colId, NOT_EMPTY_STR_PATTERN);
} else {
colIdToPattern.put(colId,
Pattern.compile("^(.(?<!" + colFilterText + "))*$", Pattern.CASE_INSENSITIVE));
}
}
// Handle normal case
else {
if (colFilterText.equals("")) {
colIdToPattern.put(colId, EMPTY_STR_PATTERN);
} else {
colIdToPattern.put(colId, Pattern.compile(colFilterText, Pattern.CASE_INSENSITIVE));
}
}
}
ColumnDateFilter dateFilter = xViewer.getCustomizeMgr().getColumnDateFilter(colId);
if (dateFilter != null) {
colIdToDateFilter.put(colId, dateFilter);
}
}
}
@Override
public boolean select(Viewer viewer, Object parentElement, Object element) {
if (textPattern == null && colIdToPattern.isEmpty() && colIdToDateFilter.isEmpty()) {
return true;
}
// If element matches, it's parent is added to this collection; it should always match so get full path shown
if (parentMatches.contains(element)) {
if (parentElement != null) {
parentMatches.add(parentElement);
}
return true;
}
boolean match = true;
// Must match all column filters or don't show
Set<String> colIds = xViewer.getCustomizeMgr().getColumnFilterData().getColIds();
for (String filteredColId : colIds) {
XViewerColumn xCol = xViewer.getCustomizeMgr().getCurrentTableColumn(filteredColId);
if (xCol.isShow()) {
if (colIdToPattern.keySet().contains(xCol.getId())) {
String cellStr =
xViewer.getColumnText(element, xViewer.getCustomizeMgr().getColumnNumFromXViewerColumn(xCol));
if (cellStr != null) {
matcher = colIdToPattern.get(xCol.getId()).matcher(cellStr);
if (!matcher.find()) {
return false;
}
}
}
if (colIdToDateFilter.containsKey(xCol.getId())) {
Object obj1 = null;
IBaseLabelProvider labelProvider = xViewer.getLabelProvider();
if (labelProvider instanceof IXViewerLabelProvider) {
try {
obj1 = ((IXViewerLabelProvider) labelProvider).getBackingData(element, xCol,
xViewer.getCustomizeMgr().getColumnNumFromXViewerColumn(xCol));
} catch (Exception ex) {
//Do Nothing
}
}
if (obj1 != null && xCol.getSortDataType() == SortDataType.Date && obj1 instanceof Date) {
Date cellDate = (Date) obj1;
ColumnDateFilter columnDateFilter = colIdToDateFilter.get(xCol.getId());
Date filterDate1 = columnDateFilter.getDate1();
DateRangeType rangeType = columnDateFilter.getType();
if (rangeType == DateRangeType.Equals_Date) {
if (cellDate.getYear() != filterDate1.getYear() || cellDate.getMonth() != filterDate1.getMonth() || cellDate.getDay() != filterDate1.getDay()) {
return false;
}
} else if (rangeType == DateRangeType.After_Date && cellDate.before(filterDate1)) {
return false;
} else if (rangeType == DateRangeType.Before_Date && cellDate.after(filterDate1)) {
return false;
} else if (rangeType == DateRangeType.Between_Dates) {
if (cellDate.before(filterDate1)) {
return false;
}
Date filterDate2 = columnDateFilter.getDate2();
if (cellDate.after(filterDate2)) {
return false;
}
}
} else {
// Do not show this row if date filter selected and no date is shown
return false;
}
}
}
}
if (!match) {
return false;
}
// Must match at least one column for filter text
if (textPattern == null) {
if (match && parentElement != null) {
parentMatches.add(parentElement);
}
return match;
}
if (textPattern != null) {
for (XViewerColumn xCol : xViewer.getCustomizeMgr().getCurrentTableColumns()) {
if (xCol.isShow()) {
// Check text filter
String cellStr =
xViewer.getColumnText(element, xViewer.getCustomizeMgr().getColumnNumFromXViewerColumn(xCol));
if (cellStr != null) {
matcher = textPattern.matcher(cellStr);
if (matcher.find()) {
if (parentElement != null) {
parentMatches.add(parentElement);
}
return true;
}
}
}
}
}
return false;
}
}