ea2ddl-dao/src/main/java/jp/sourceforge/ea2ddl/dao/allcommon/cbean/pagenavi/group/PageGroupBean.java

   1 package jp.sourceforge.ea2ddl.dao.allcommon.cbean.pagenavi.group;\r
   2 \r
   3 import java.util.List;\r
   4 import java.util.ArrayList;\r
   5 import java.util.Iterator;\r
   6 \r
   7 import jp.sourceforge.ea2ddl.dao.allcommon.cbean.pagenavi.PageNumberLink;\r
   8 import jp.sourceforge.ea2ddl.dao.allcommon.cbean.pagenavi.PageNumberLinkSetupper;\r
   9 \r
  10 /**\r
  11  * The bean of page group.\r
  12  * @author DBFlute(AutoGenerator)\r
  13  */\r
  14 public class PageGroupBean implements java.io.Serializable {\r
  15 \r
  16     // ===================================================================================\r
  17     //                                                                          Definition\r
  18     //                                                                          ==========\r
  19     /** Serial version UID. (Default) */\r
  20     private static final long serialVersionUID = 1L;\r
  21 \r
  22     // ===================================================================================\r
  23     //                                                                           Attribute\r
  24     //                                                                           =========\r
  25     protected int _currentPageNumber;\r
  26     protected int _allPageCount;\r
  27     protected PageGroupOption _pageGroupOption;\r
  28 \r
  29     // ===================================================================================\r
  30     //                                                                                Main\r
  31     //                                                                                ====\r
  32     /**\r
  33      * Build the list of page number link.\r
  34          * @param <LINK> The type of link.\r
  35      * @param pageNumberLinkSetupper Page number link setupper. (NotNull and Required LINK)\r
  36      * @return The list of Page number link. (NotNull)\r
  37      */\r
  38     public <LINK extends PageNumberLink> List<LINK> buildPageNumberLinkList(PageNumberLinkSetupper<LINK> pageNumberLinkSetupper) {\r
  39         final List<Integer> pageNumberList = createPageNumberList();\r
  40         final List<LINK> pageNumberLinkList = new ArrayList<LINK>();\r
  41         for (Integer pageNumber: pageNumberList) {\r
  42             pageNumberLinkList.add(pageNumberLinkSetupper.setup(pageNumber, pageNumber.equals(_currentPageNumber)));\r
  43         }\r
  44         return pageNumberLinkList;\r
  45     }\r
  46 \r
  47     /**\r
  48      * Calculate start page number.\r
  49      * @return Start page number.\r
  50      */\r
  51     public int calculateStartPageNumber() {\r
  52         assertPageGroupValid();\r
  53         final int pageGroupSize = _pageGroupOption.getPageGroupSize();\r
  54         final int currentPageNumber = _currentPageNumber;\r
  55 \r
  56         int currentPageGroupNumber = (currentPageNumber / pageGroupSize);\r
  57         if ((currentPageNumber % pageGroupSize) == 0)\r
  58         {\r
  59             currentPageGroupNumber--;\r
  60         }\r
  61         final int currentPageGroupStartPageNumber = (pageGroupSize * currentPageGroupNumber) + 1;\r
  62         if (!(currentPageNumber >= currentPageGroupStartPageNumber)) {\r
  63             String msg = "currentPageNumber should be greater equal currentPageGroupStartPageNumber. But:";\r
  64             msg = msg + " currentPageNumber=" + currentPageNumber;\r
  65             msg = msg + " currentPageGroupStartPageNumber=" + currentPageGroupStartPageNumber;\r
  66             throw new IllegalStateException(msg);\r
  67         }\r
  68         return currentPageGroupStartPageNumber;\r
  69     }\r
  70 \r
  71     /**\r
  72      * Create the list of page number.\r
  73      * @return The list of page number. (NotNull)\r
  74      */\r
  75     public List<Integer> createPageNumberList() {\r
  76         assertPageGroupValid();\r
  77         final int pageGroupSize = _pageGroupOption.getPageGroupSize();\r
  78         final int allPageCount = _allPageCount;\r
  79         final int currentPageGroupStartPageNumber = calculateStartPageNumber();\r
  80         if (!(currentPageGroupStartPageNumber > 0)) {\r
  81             String msg = "currentPageGroupStartPageNumber should be greater than 0. {> 0} But:";\r
  82             msg = msg + " currentPageGroupStartPageNumber=" + currentPageGroupStartPageNumber;\r
  83             throw new IllegalStateException(msg);\r
  84         }\r
  85         final int nextPageGroupStartPageNumber = currentPageGroupStartPageNumber + pageGroupSize;\r
  86 \r
  87         final List<Integer> resultList = new ArrayList<Integer>();\r
  88         for (int i=currentPageGroupStartPageNumber; i < nextPageGroupStartPageNumber && i <= allPageCount; i++) {\r
  89             resultList.add(new Integer(i));\r
  90         }\r
  91         return resultList;\r
  92     }\r
  93 \r
  94     /**\r
  95      * Create the array of page number.\r
  96      * @return The array of page number. (NotNUll)\r
  97      */\r
  98     public int[] createPageNumberArray() {\r
  99         assertPageGroupValid();\r
 100         return convertListToIntArray(createPageNumberList());\r
 101     }\r
 102 \r
 103     /**\r
 104      * Is existing previous page-group?\r
 105      * Using values are currentPageNumber and pageGroupSize.\r
 106      * \r
 107      * @return Determination.\r
 108      */\r
 109     public boolean isExistPrePageGroup() {\r
 110         assertPageGroupValid();\r
 111         return (_currentPageNumber > _pageGroupOption.getPageGroupSize());\r
 112     }\r
 113 \r
 114     /**\r
 115      * Is existing next page-group?\r
 116      * Using values are currentPageNumber and pageGroupSize and allPageCount.\r
 117      * \r
 118      * @return Determination.\r
 119      */\r
 120     public boolean isExistNextPageGroup() {\r
 121         assertPageGroupValid();\r
 122         int currentPageGroupStartPageNumber = calculateStartPageNumber();\r
 123         if (!(currentPageGroupStartPageNumber > 0)) {\r
 124             String msg = "currentPageGroupStartPageNumber should be greater than 0. {> 0} But:";\r
 125             msg = msg + " currentPageGroupStartPageNumber=" + currentPageGroupStartPageNumber;\r
 126             throw new IllegalStateException(msg);\r
 127         }\r
 128         int nextPageGroupStartPageNumber = currentPageGroupStartPageNumber + _pageGroupOption.getPageGroupSize();\r
 129         return (nextPageGroupStartPageNumber <= _allPageCount);\r
 130     }\r
 131 \r
 132     // ===================================================================================\r
 133     //                                                                       Assist Helper\r
 134     //                                                                       =============\r
 135     protected int[] convertListToIntArray(List<Integer> ls) {\r
 136         final int[] resultArray = new int[ls.size()];\r
 137         int arrayIndex = 0;\r
 138         for (Iterator<Integer> ite = ls.iterator(); ite.hasNext(); ) {\r
 139             final Integer tmpPageNumber = (Integer)ite.next();\r
 140             resultArray[arrayIndex] = tmpPageNumber.intValue();\r
 141             arrayIndex++;\r
 142         }\r
 143         return resultArray;\r
 144     }\r
 145 \r
 146     protected void assertPageGroupValid() {\r
 147         if (_pageGroupOption == null) {\r
 148             String msg = "The pageGroupOption should not be null. Please invoke setPageGroupOption().";\r
 149             throw new IllegalStateException(msg);\r
 150         }\r
 151         if (_pageGroupOption.getPageGroupSize() == 0) {\r
 152             String msg = "The pageGroupSize should be greater than 1. But the value is zero.";\r
 153             msg = msg + " pageGroupSize=" + _pageGroupOption.getPageGroupSize();\r
 154             throw new IllegalStateException(msg);\r
 155         }\r
 156         if (_pageGroupOption.getPageGroupSize() == 1) {\r
 157             String msg = "The pageGroupSize should be greater than 1. But the value is one.";\r
 158             msg = msg + " pageGroupSize=" + _pageGroupOption.getPageGroupSize();\r
 159             throw new IllegalStateException(msg);\r
 160         }\r
 161     }\r
 162 \r
 163     // ===================================================================================\r
 164     //                                                                      Basic Override\r
 165     //                                                                      ==============\r
 166     /**\r
 167      * @return The view string of all attribute values. (NotNull)\r
 168      */\r
 169         @Override\r
 170     public String toString() {\r
 171         final StringBuilder sb = new StringBuilder();\r
 172 \r
 173         sb.append(" currentPageNumber=").append(_currentPageNumber);\r
 174         sb.append(" allPageCount=").append(_allPageCount);\r
 175         sb.append(" pageGroupOption=").append(_pageGroupOption);\r
 176 \r
 177         return sb.toString();\r
 178     }\r
 179 \r
 180     // ===================================================================================\r
 181     //                                                                            Accessor\r
 182     //                                                                            ========\r
 183     public void setCurrentPageNumber(int currentPageNumber) {\r
 184         this._currentPageNumber = currentPageNumber;\r
 185     }\r
 186     public void setAllPageCount(int allPageCount) {\r
 187         this._allPageCount = allPageCount;\r
 188     }\r
 189     public void setPageGroupOption(PageGroupOption pageGroupOption) {\r
 190         this._pageGroupOption = pageGroupOption;\r
 191     }\r
 192 }\r