/* ==================================================================== Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with 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 the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. ==================================================================== */ namespace HH.WMS.Utils.NPOI.HSSF.Record.Aggregates { using System; using System.Text; using System.Collections.Generic; using HH.WMS.Utils.NPOI.HSSF.Model; using HH.WMS.Utils.NPOI.HSSF.Record; using HH.WMS.Utils.NPOI.SS.Util; /** * * @author Josh Micich */ public class MergedCellsTable : RecordAggregate { private const int MAX_MERGED_REGIONS = 1027; // enforced by the 8224 byte limit private List _mergedRegions; /// /// Creates an empty aggregate /// public MergedCellsTable() { _mergedRegions = new List(); } /** * Reads zero or more consecutive {@link MergeCellsRecord}s * @param rs */ public void Read(RecordStream rs) { while (rs.PeekNextClass() == typeof(MergeCellsRecord)) { MergeCellsRecord mcr = (MergeCellsRecord)rs.GetNext(); int nRegions = mcr.NumAreas; for (int i = 0; i < nRegions; i++) { _mergedRegions.Add(mcr.GetAreaAt(i)); } } } public override int RecordSize { get { // a bit cheaper than the default impl int nRegions = _mergedRegions.Count; if (nRegions < 1) { // no need to write a single empty MergeCellsRecord return 0; } int nMergedCellsRecords = nRegions / MAX_MERGED_REGIONS; int nLeftoverMergedRegions = nRegions % MAX_MERGED_REGIONS; int result = nMergedCellsRecords * (4 + CellRangeAddressList.GetEncodedSize(MAX_MERGED_REGIONS)) + 4 + CellRangeAddressList.GetEncodedSize(nLeftoverMergedRegions); return result; } } public override void VisitContainedRecords(RecordVisitor rv) { int nRegions = _mergedRegions.Count; if (nRegions < 1) { // no need to write a single empty MergeCellsRecord return; } int nFullMergedCellsRecords = nRegions / MAX_MERGED_REGIONS; int nLeftoverMergedRegions = nRegions % MAX_MERGED_REGIONS; CellRangeAddress[] cras = (CellRangeAddress[])_mergedRegions.ToArray(); for (int i = 0; i < nFullMergedCellsRecords; i++) { int startIx = i * MAX_MERGED_REGIONS; rv.VisitRecord(new MergeCellsRecord(cras, startIx, MAX_MERGED_REGIONS)); } if (nLeftoverMergedRegions > 0) { int startIx = nFullMergedCellsRecords * MAX_MERGED_REGIONS; rv.VisitRecord(new MergeCellsRecord(cras, startIx, nLeftoverMergedRegions)); } } public void AddRecords(MergeCellsRecord[] mcrs) { for (int i = 0; i < mcrs.Length; i++) { AddMergeCellsRecord(mcrs[i]); } } private void AddMergeCellsRecord(MergeCellsRecord mcr) { int nRegions = mcr.NumAreas; for (int i = 0; i < nRegions; i++) { _mergedRegions.Add(mcr.GetAreaAt(i)); } } public List MergedRegions { get { return _mergedRegions; } } public CellRangeAddress Get(int index) { CheckIndex(index); return (CellRangeAddress)_mergedRegions[index]; } public void Remove(int index) { CheckIndex(index); _mergedRegions.RemoveAt(index); } private void CheckIndex(int index) { if (index < 0 || index >= _mergedRegions.Count) { throw new ArgumentException("Specified CF index " + index + " is outside the allowable range (0.." + (_mergedRegions.Count - 1) + ")"); } } public void AddArea(int rowFrom, int colFrom, int rowTo, int colTo) { _mergedRegions.Add(new CellRangeAddress(rowFrom, rowTo, colFrom, colTo)); } public int NumberOfMergedRegions { get { return _mergedRegions.Count; } } } }