Rev 1027 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1020 | dev | 1 | package ak.hostadmiral.util; |
| 2 | |||
| 3 | public class CollectionInfo |
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| 4 | { |
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| 1027 | dev | 5 | /** total number of rows in list */ |
| 1020 | dev | 6 | private int size; |
| 7 | |||
| 8 | public int getSize() |
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| 9 | { |
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| 10 | return size; |
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| 11 | } |
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| 12 | |||
| 13 | public void setSize(int size) |
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| 14 | { |
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| 15 | this.size = size; |
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| 1027 | dev | 16 | recalc(); |
| 1020 | dev | 17 | } |
| 1027 | dev | 18 | |
| 19 | /** current selected page */ |
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| 20 | private int currentPage; |
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| 21 | |||
| 22 | protected int normPage(int page) |
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| 23 | { |
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| 24 | if(totalPages <= 0 || page <= 0) |
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| 25 | return 0; |
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| 26 | else if(page < totalPages) |
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| 27 | return page; |
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| 28 | else |
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| 29 | return (totalPages - 1); |
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| 30 | } |
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| 31 | |||
| 32 | public int getCurrentPage() |
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| 33 | { |
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| 34 | return normPage(currentPage); |
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| 35 | } |
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| 36 | |||
| 37 | public void setCurrentPage(int currentPage) |
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| 38 | { |
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| 39 | this.currentPage = currentPage; |
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| 40 | } |
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| 41 | |||
| 42 | /** number of rows on one page */ |
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| 43 | private int rowsPerPage; |
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| 44 | |||
| 45 | public int getRowsPerPage() |
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| 46 | { |
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| 47 | return rowsPerPage; |
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| 48 | } |
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| 49 | |||
| 50 | public void setRowsPerPage(int rowsPerPage) |
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| 51 | { |
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| 52 | this.rowsPerPage = rowsPerPage; |
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| 53 | recalc(); |
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| 54 | } |
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| 55 | |||
| 56 | /** total number of pages */ |
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| 57 | private int totalPages; |
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| 58 | |||
| 59 | public int getTotalPages() |
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| 60 | { |
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| 61 | return totalPages; |
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| 62 | } |
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| 63 | |||
| 64 | public int getFirstPage() |
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| 65 | { |
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| 66 | return 0; |
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| 67 | } |
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| 68 | |||
| 69 | public int getLastPage() |
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| 70 | { |
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| 71 | return normPage(totalPages - 1); |
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| 72 | } |
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| 73 | |||
| 74 | public int getPrevPage() |
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| 75 | { |
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| 76 | return normPage(currentPage - 1); |
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| 77 | } |
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| 78 | |||
| 79 | public int getNextPage() |
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| 80 | { |
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| 81 | return normPage(currentPage + 1); |
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| 82 | } |
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| 83 | |||
| 84 | protected void recalc() |
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| 85 | { |
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| 86 | if(rowsPerPage > 0) |
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| 1073 | dev | 87 | totalPages = (size + rowsPerPage - 1) / rowsPerPage; |
| 1027 | dev | 88 | } |
| 89 | |||
| 90 | public void init(int size, int currentPage, int rowsPerPage) |
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| 91 | { |
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| 92 | this.size = size; |
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| 93 | this.currentPage = currentPage; |
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| 94 | this.rowsPerPage = rowsPerPage; |
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| 95 | recalc(); |
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| 96 | } |
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| 1020 | dev | 97 | } |