DataGrid3

Posted on 2005-11-22 13:37 飞鼠阅读(225) 评论(0) 收藏举报

   //***************************************************************************************
    //第三組:自己處理Select\Delete 事件 \添加CheckBox列
    //***************************************************************************************

/* **************************************************************
 ※ 以下程序段功能: 根具條件產生DataGrid
 參數： 1. String URL ：調用此方法的頁面
 2. java.util.Hashtable ht[] ：數據源
 3. String[] ColumnText ：記錄數據索引的Key值
 4. String[] dtgTitle ：表頭數組
 5. String[] dtgRight ：數字靠右文字靠左原則
 6. int PageSize ：每頁顯示的筆數
 ************************************************************** */
 public String GetDataGrid_chk() throws Exception {
 String strReturn="";
 int idtgCurrentPage=1;//DataGrid當前頁面
 int ItemCount =0; //數據總數
 int colSpan ; //PagerStyle佔用縂 <TD> 數目
 int pageCount=1; //計算所有數據共有多少頁

if (ht==null)
 {
 return "<tr><td style= \"display:none\"> </td></tr>\n";
 }
 else
 ItemCount = ht.length; //數據總數

if (columnText==null)
 {
 return "<tr><td style= \"display:none\"> </td></tr>\n";
 }
 else

if(ItemCount==0) //沒有數據時則不顯示DataGrid
return "<tr><td style= \"display:none\"> </td></tr>\n";

//PagerStyle佔用縂 <TD> 數目
 colSpan = columnText.length + 2;
 if(selectDisplay.equals("") )
 colSpan++;
 if(deleteDisplay.equals("") )
 colSpan++;

//非法值處理
 if(pageSize<1)
 { pageSize=10;}

//計算所有數據共有多少頁
 if (ItemCount != 0 && (ItemCount % pageSize) != 0) {
 pageCount = (ItemCount / pageSize) + 1;
 } else {
 pageCount = ItemCount / pageSize;
 }
 //當請的頁數超出有效值範圍時:
 try{
 idtgCurrentPage=Integer.parseInt(dtgCurrentPage[dtgID]);
 if(idtgCurrentPage<1)
 idtgCurrentPage=1;
 else if(idtgCurrentPage>pageCount){
 idtgCurrentPage=pageCount;
 }
 }
 catch(Exception ex) {
 idtgCurrentPage=1;
 }
 finally{
 dtgCurrentPage[dtgID]=String.valueOf(idtgCurrentPage);
 }

//DataGrid 表頭列
strReturn+=GetDtgTitle_chk(dtgTitle);

//DataGrid 數據列
strReturn+=GetDtgItem_chk(selfURL,columnText,dtgRight,idtgCurrentPage,pageSize) ;

//DataGrid PagerStyle
strReturn+=GetDtgPagerStyle_chk( selfURL, idtgCurrentPage, pageSize, ItemCount, colSpan);

return strReturn;
}

/*----------------DataGrid 表頭列--------------------*/
 private String GetDtgTitle_chk(String[] dtgTitle) throws Exception {
 String strReturn = "";
 //只寫入一次 </TR>
 strReturn += "<tr class=\"GridHeaderStyle\" align=\"center\" >\n";
 strReturn += "<td style=\"Display:"+selectDisplay+"\" >操作 </td>\n";
 strReturn += "<td style=\"Display:"+deleteDisplay+"\" >操作 </td>\n";
 strReturn += "<td >不終止 </td>\n";
 strReturn += "<td >筆數 </td>\n";
 //循環寫 <TD>
 for (int iTitle = 0; iTitle < dtgTitle.length; iTitle++) {
 strReturn += "<td>" + dtgTitle[iTitle] + "</td>\n";
 }
 //只寫入一次 </TR>
 strReturn += "</tr>\n";

// System.out.println( "-----------------DataGrid 表頭列--------------------\n\n") ;
// System.out.println(strReturn) ;

return strReturn;
}

   /*----------------DataGrid 數據列--------------------*/
    private String GetDtgItem_chk(String URL,String[] ColumnText,String[] dtgRight,int idtgCurrentPage, int PageSize) throws Exception {
        String strReturn = "";

/*-----------------DataGrid 數據列--------------------*/
 for(int iRow=0;iRow<ht.length;iRow++) //數據以列循環
 {
 int dtgItemCount= iRow+1;//數據索引列

//控制換頁(顯示當前頁)
 if (dtgItemCount <= (idtgCurrentPage - 1) * PageSize ||
 dtgItemCount > idtgCurrentPage * PageSize) {
 continue; //如果此筆數據不在dtgCurrentPage所記錄的當前頁的顯示範圍，則跳出循環體
 }

//DataGrid數據列的 TR
 int selectItem=Integer.parseInt(dtgSelectItem[dtgID]);
 if (selectItem == dtgItemCount) { //當前選擇列：突出標示顔色
 strReturn +=
 " <tr align=\"left\" class=\"SelectedItemStyle\"> \n";
 } else if (dtgItemCount % 2 == 0) { //如果是偶數列則使用不同的Css樣式，以示區分
 strReturn +=
 " <tr align=\"left\" class=\"AlternatingItemStyle\"> \n";
 } else { //其它無特殊處理
 strReturn += " <tr align=\"left\" > \n";
 }

//DataGrid數據列的固定 <TD>
 // 1.選取
 String strSelect=URL+"?"+"action=Dtg_Select&dtgSelectItem"+dtgID+"="+dtgItemCount+"";
 //String onclick="javascript:self.parent.document.Form1.all['action'].value='Select';self.parent.document.Form1.submit();";
 strReturn += "<td align=\"center\" style=\"Display:"+selectDisplay+"\" ><a onclick=\"Dtg_Select"+dtgID+"()\" href=\""+strSelect+"\">"+selectText+"</a></td>\n";
 // strReturn += "<td align=\"center\">"+dtgItemCount+" </td>\n";

// 2.刪除
 String strDelete=URL+"?"+"action=Dtg_Delete&dtgSelectItem"+dtgID+"="+dtgItemCount+"";
 //String onclick="javascript:self.parent.document.Form1.all['action'].value='Select';self.parent.document.Form1.submit();";
 strReturn += "<td align=\"center\" style=\"Display:"+deleteDisplay+"\" ><a onclick=\"Dtg_Delete"+dtgID+"()\" href=\""+strDelete+"\">"+deleteText+"</a></td>\n";

//CheckBox
String ifChecked="";

if(checked[dtgItemCount]==null)
 {ifChecked="";}
 else if(checked[dtgItemCount].toString().trim().equals("1") )
 {ifChecked="Checked";}
 else
 { ifChecked=""; }
 strReturn += "<td align=\"center\" ><input type=\"checkbox\" "+ifChecked+" id=\"chk"+dtgItemCount+"\" name=\"chk"+dtgItemCount+"\" value=\"1\" /> </td>\n";
 strReturn += "<td align=\"center\">"+dtgItemCount+" </td>\n";

//DataGrid數據列的動態 <TD>
for (int i = 0; i < ColumnText.length; i++) {

                  //出去空白：空白補:nbsp
                  String Text= com.bshine.Util.ClsCommFuns.doNull( ht[iRow].get(ColumnText[i]).toString() ) ;
                  Text+="&nbsp";
                     System.out.println( "--------"+dtgTitle[i]+"---------"+ColumnText[i]+"--------------------\n\n") ;

if (dtgRight[i].equals("Right")) { //數字靠右對齊
 strReturn += "<td align=\"right\" >" + Text +
 "</td>\n";
 } else {//文字靠左對齊
 strReturn += "<td>" +Text +
 "</td>\n";
 }
 }//end for (int i = 0; i < ColumnText.length; i++)

strReturn+="</tr>\n";
}//end for(int iRow=0;iRow<ht.length;iRow++) //數據以列循環

       //   System.out.println( "-----------------DataGrid 數據列--------------------\n\n") ;
       //   System.out.println(strReturn) ;
        return strReturn;
    }

/*----------------DataGrid PagerStyle--------------------*/
private String GetDtgPagerStyle_chk(String URL,int idtgCurrentPage, int PageSize,int ItemCount, int colSpan) throws Exception {
String strReturn = "";

// System.out.println( "*-----------------DataGrid PagerStyle--------------------*") ;
/*-----------------DataGrid PagerStyle--------------------*/

// int ItemCount = ht.length; //數據總數
 // int colSpan = ColumnText.length + 2; //PagerStyle佔用縂 <TD> 數目
 int pageCount = 1; //記錄數據集的縂頁數

          //計算所有數據共有多少頁
          if (ItemCount != 0 && (ItemCount % PageSize) != 0) {
              pageCount = (ItemCount / PageSize) + 1;
          } else {
              pageCount = ItemCount / PageSize;
          }

//計算當前列顯示在哪一組 (10頁為一組)
int iCurrentGroup = PageGroup(idtgCurrentPage);

//<TR><TD>
 strReturn += " <tr align=\"left\" class=\"GridFooterStyle\"> \n";
 strReturn += "<TD colSpan=" + colSpan + " >\n";
 //共25頁第2頁
 strReturn+="共"+pageCount+"頁  ";
 strReturn+="第"+idtgCurrentPage+"頁    ";

//顯示上一標簽組連接符號（<<<）
 if ((iCurrentGroup-1) >= 1)
 {
 int LastPage=(iCurrentGroup-1)*10;
 String strPar = URL + "?" + "dtgCurrentPage"+dtgID+"=" + LastPage + "";
 strReturn += " <a onclick=\"changPage"+dtgID+"('"+LastPage+"')\" href=\"#\"> 上10頁 </a> \n";
 }

//顯示當前換頁標簽組
 for (int j = 1; j <= pageCount; j++) {
 String strPar = URL + "?" + "dtgCurrentPage"+dtgID+"=" + j + "";
 if (GetPageCount(j,idtgCurrentPage)) { //判斷 j 頁是否為前換頁標簽組
 strReturn += " <a onclick=\"changPage"+dtgID+"('"+j+"')\" href=\"#\">" + j + "</a> \n";
 }
 }

//顯示下一標簽組連接符號（>>>）
 if (iCurrentGroup*10<pageCount)
 {
 int NextPage=iCurrentGroup*10+1;
 String strPar = URL + "?" + "dtgCurrentPage"+dtgID+"=" + NextPage + "";
 strReturn += " <a onclick=\"changPage"+dtgID+"('"+NextPage+"')\" href=\"#\"> 下10頁 </a> \n";
 }

//跳轉
 strReturn+="   第";
 strReturn+="<input type=\"text\" class=\"gridtextbox\" size=\"3\" name=\"dtgCurrentPage"+dtgID+"\" id=\"dtgCurrentPage"+dtgID+"\" value=\""+idtgCurrentPage+"\">";
 strReturn+="頁";
 strReturn+="<input class=\"gridbutton\" value=\"跳轉\" type=\"button\" onclick=\"javascript:submit()\">";
 strReturn += "</TD>\n</TR>\n";

/*---------------結束--DataGrid PagerStyle--------------------*/
// System.out.println(strReturn) ;

return strReturn;
}

//控制換頁標簽10頁為一組 ,判斷 PageIndex 頁是否顯示
private boolean GetPageCount(int PageIndex,int idtgCurrentPage) throws Exception {
     //dtgCurrentPage
     boolean Flag=false;
     int iPageGroup    = PageGroup(PageIndex);      //計算PageIndex顯示在哪一組
     int iCurrentGroup = PageGroup(idtgCurrentPage); //計算當前列顯示在哪一組

if(iPageGroup==iCurrentGroup) //如果PageIndex屬於當前顯示組則：顯示
Flag=true;

return Flag;
}

//計算PageIndex顯示在哪一組
private int PageGroup(int PageIndex) throws Exception {
int CurrentGroup = 1;

     if (PageIndex%10==0 )
         CurrentGroup    = PageIndex/10;
     else
        CurrentGroup    = PageIndex/10 +1;      //計算PageIndex顯示在哪一組

return CurrentGroup;
}

public void setDtgCurrentPage(String dtgCurrentPage) {

this.dtgCurrentPage[dtgID] = dtgCurrentPage;
}

    public void setDtgSelectItem(String dtgSelectItem) {
        this.dtgSelectItem[dtgID] = dtgSelectItem;
    }

    public void setHt(Hashtable[] ht) {
        this.ht = ht;
    }

    public void setDtgRight(String[] dtgRight) {
        this.dtgRight = dtgRight;
    }

    public void setDtgTitle(String[] dtgTitle) {
        this.dtgTitle = dtgTitle;
    }

    public void setDeleteText(String DeleteText) {
        this.deleteText = DeleteText;
    }

    public void setSelectText(String SelectText) {
        this.selectText = SelectText;
    }

    public void setSelectDisplay(String SelectDisplay) {
        this.selectDisplay = SelectDisplay;
    }

    public void setDeletetext(String Deletetext) {
        this.deleteText = Deletetext;
    }

    public void setDeleteDisplay(String DeleteDisplay) {
        this.deleteDisplay = DeleteDisplay;
    }

    public void setSelfURL(String SelfURL) {
        this.selfURL = SelfURL;
    }

    public void setURL(String URL) {
        this.url = URL;
    }

    public void setPageSize(int PageSize) {
        this.pageSize = PageSize;
    }

    public void setColumnText(String[] ColumnText) {
        this.columnText = ColumnText;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public void setChecked(String[] checked) {
        this.checked = checked;
    }

    public void setChecked(int index,String value) {
       this.checked[index] = value;
   }

public String getDtgCurrentPage() {
return dtgCurrentPage[dtgID];

}

    public int getDtgSelectItem() {
        int item=1;
        try{
             item = Integer.parseInt(this.dtgSelectItem[dtgID]);
        }catch(Exception ex)
        {
            item=1;
        }
        return item;
    }

    public Hashtable[] getHt() {
        return ht;
    }

    public String[] getChecked() {
        return checked;
    }

    public int getItemCount() {
       if(ht==null)
           return 0;
       else
        return ht.length ;
   }

private void jbInit() throws Exception {
}

}//end Class

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DataGrid3