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this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
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distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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package org.apache.poi.hssf.usermodel;
import org.apache.poi.hssf.record.CFHeaderRecord;
import org.apache.poi.hssf.record.CFRuleRecord;
import org.apache.poi.hssf.record.aggregates.CFRecordsAggregate;
import org.apache.poi.hssf.record.cf.CellRange;
import org.apache.poi.ss.util.Region;
/**
* HSSFConditionalFormatting class encapsulates all settings of Conditional Formatting.
*
* The class can be used
*
* <UL>
* <LI>
* to make a copy HSSFConditionalFormatting settings.
* </LI>
*
*
* For example:
* <PRE>
* HSSFConditionalFormatting cf = sheet.getConditionalFormattingAt(index);
* newSheet.addConditionalFormatting(cf);
* </PRE>
*
* <LI>
* or to modify existing Conditional Formatting settings (formatting regions and/or rules).
* </LI>
* </UL>
*
* Use {@link HSSFSheet#getConditionalFormattingAt(int)} to get access to an instance of this class.
* <P>
* To create a new Conditional Formatting set use the following approach:
*
* <PRE>
*
* // Define a Conditional Formatting rule, which triggers formatting
* // when cell's value is greater or equal than 100.0 and
* // applies patternFormatting defined below.
* HSSFConditionalFormattingRule rule = sheet.createConditionalFormattingRule(
* ComparisonOperator.GE,
* "100.0", // 1st formula
* null // 2nd formula is not used for comparison operator GE
* );
*
* // Create pattern with red background
* HSSFPatternFormatting patternFmt = rule.cretePatternFormatting();
* patternFormatting.setFillBackgroundColor(HSSFColor.RED.index);
*
* // Define a region containing first column
* Region [] regions =
* {
* new Region(1,(short)1,-1,(short)1)
* };
*
* // Apply Conditional Formatting rule defined above to the regions
* sheet.addConditionalFormatting(regions, rule);
* </PRE>
*
* @author Dmitriy Kumshayev
*/
public final class HSSFConditionalFormatting
{
private final HSSFWorkbook _workbook;
private final CFRecordsAggregate cfAggregate;
HSSFConditionalFormatting(HSSFWorkbook workbook, CFRecordsAggregate cfAggregate)
{
if(workbook == null) {
throw new IllegalArgumentException("workbook must not be null");
}
if(cfAggregate == null) {
throw new IllegalArgumentException("cfAggregate must not be null");
}
_workbook = workbook;
this.cfAggregate = cfAggregate;
}
CFRecordsAggregate getCFRecordsAggregate() {
return cfAggregate;
}
/**
* @return array of <tt>Region</tt>s. never <code>null</code>
*/
public Region[] getFormattingRegions()
{
CFHeaderRecord cfh = cfAggregate.getHeader();
CellRange[] cellRanges = cfh.getCellRanges();
return CellRange.convertCellRangesToRegions(cellRanges);
}
/**
* Replaces an existing Conditional Formatting rule at position idx.
* Excel allows to create up to 3 Conditional Formatting rules.
* This method can be useful to modify existing Conditional Formatting rules.
*
* @param idx position of the rule. Should be between 0 and 2.
* @param cfRule - Conditional Formatting rule
*/
public void setRule(int idx, HSSFConditionalFormattingRule cfRule)
{
cfAggregate.setRule(idx, cfRule.getCfRuleRecord());
}
/**
* add a Conditional Formatting rule.
* Excel allows to create up to 3 Conditional Formatting rules.
* @param cfRule - Conditional Formatting rule
*/
public void addRule(HSSFConditionalFormattingRule cfRule)
{
cfAggregate.addRule(cfRule.getCfRuleRecord());
}
/**
* @return the Conditional Formatting rule at position idx.
*/
public HSSFConditionalFormattingRule getRule(int idx)
{
CFRuleRecord ruleRecord = cfAggregate.getRule(idx);
return new HSSFConditionalFormattingRule(_workbook, ruleRecord);
}
/**
* @return number of Conditional Formatting rules.
*/
public int getNumberOfRules()
{
return cfAggregate.getNumberOfRules();
}
public String toString()
{
return cfAggregate.toString();
}
}