java web 通用的分页组件.docx

2、 

数据表格类

packagecommons.page;

importjava.util.Calendar;

importjava.util.List;

importcommons.page.model.ArrayDataModel;

importcommons.page.model.DataModel;

importcommons.page.model.ListDataModel;

publicclassHtmlTableextendsHtmlElement{

      privateHtmlElementthead=newHtmlElement（"thead"）;

      privateHtmlElementtbody=newHtmlElement（"tbody"）;

      privateHtmlElementtfoot=newHtmlElement（"tfoot"）;

      privateString[]header=null;

      privateString[]footer=null;

      privateDataModeldataModel=null;

      privateintstartRowIndex=-1;//开始行索引

      privateintmaxRowNum=-1;//最大行数

      privateCellCallBackcallBack;

      publicHtmlTable（）{

             super（"table"）;

      }

      publicvoidsetCellCallBack（CellCallBackcallBack）{

             this.callBack=callBack;

      }

      publicvoidsetMaxRowNum（intmaxRowNum）{

             this.maxRowNum=maxRowNum;

      }

      publicvoidsetStartRowIndex（intstartRowIndex）{

             this.startRowIndex=startRowIndex;

      }

      publicvoidsetHeader（String[]header）{

             this.header=header;

      }

      publicvoidsetHeader（Stringheader）{

             this.header=header.split（","）;

      }

      publicvoidsetFooter（String[]footer）{

             this.footer=footer;

      }

      publicvoidsetFooter（Stringfooter）{

             this.footer=footer.split（","）;

      }

      publicvoidsetDataModel（DataModeldataModel）{

             this.dataModel=dataModel;

      }

      publicvoidsetData（Object[][]data）{

             this.dataModel=newArrayDataModel（）;

             this.dataModel.setWrappedData（data）;

      }

      publicvoidsetData（Listdata）{

             this.dataModel=newListDataModel（）;

             this.dataModel.setWrappedData（data）;

      }

      publicvoidsetTbody（HtmlElementtbody）{

             this.tbody=tbody;

      }

      publicvoidsetTfoot（HtmlElementtfoot）{

             this.tfoot=tfoot;

      }

      publicvoidsetThead（HtmlElementthead）{

             this.thead=thead;

      }

      @Override

      publicStringtoHtml（）{

             Stringid=this.getAttributeValue（"id"）;

             if（id==null||"".equals（id））{

                    this.addAttribute（"id","table"+Calendar.getInstance（）.getTimeInMillis（））;

             }

             this.process（）;

             returnsuper.toHtml（）;

      }

      privatevoidprocess（）{

             if（this.header!

=null）{

                    this.thead.getChildren（）.clear（）;

                    HtmlElementtr=newHtmlElement（"tr"）;

                    for（Stringheader:

this.header）{

                           HtmlElementth=newHtmlElement（"th"）;

                           th.setText（header）;

                           tr.addChild（th）;

                    }

                    this.thead.addChild（tr）;

                    this.addChild（this.thead）;

             }

             if（this.dataModel!

=null）{

                    if（this.callBack==null）{

                           this.callBack=newCellCallBack（）{

                                  publicHtmlElementdoCell（Objectdata）{

                                         HtmlRowtr=newHtmlRow（）;

                                         if（datainstanceofString[]）{

                                                String[]ds=（String[]）data;

                                                intlen=ds.length;

                                                if（header!

=null）{

                                                       if（len>header.length）{

                                                              len=header.length;

                                                       }

                                                }

                                                for（inti=0;i

                                                       HtmlElementtd=newHtmlElement（"td"）;

                                                       td.setText（ds[i]==null?

"":

ds[i]）;

                                                       tr.addChild（td）;

                                                }

                                         }elseif（datainstanceofObject[]）{

                                                Object[]os=（Object[]）data;

                                                intlen=os.length;

                                                if（header!

=null）{

                                                       if（len>header.length）{

                                                              len=header.length;

                                                       }

                                                }

                                                for（inti=0;i

                                                       HtmlElementtd=newHtmlElement（"td"）;

                                                       td.setText（os[i]==null?

"":

os[i].toString（））;

                                                       tr.addChild（td）;

                                                }

                                         }

                                         returntr;

                                  }

                           };

                    }

                    intstartRow=0;

                    intendRow=0;

                    intj=this.dataModel.getRowCount（）;

                    if（this.startRowIndex>0）{

                           startRow=this.startRowIndex;

                    }

                    if（this.maxRowNum<0）{

                           endRow=this.dataModel.getRowCount（）;

                    }else{

                           endRow=startRow+this.maxRowNum;

                    }

                    if（endRow>j）{

                           endRow=j;

                    }

                    this.tbody.getChildren（）.clear（）;

                    for（inti=startRow;i

                           this.dataModel.setRowIndex（i）;

                           HtmlElementtr=this.callBack.doCell（this.dataModel.getRowData（））;

                           this.tbody.addChild（tr）;

                    }