Flex 2 DataGrid 分页

来源：百度文库编辑：神马文学网时间：2024/04/29 17:29:37

Flex 2 DataGrid 分页代码，效果如下：

public var pageRecordes:uint = 8;
public var totalPages:uint = 0;
public var totalRows:uint = 0;
public var currentPage:uint = 1;
public var pageStartRow:uint = 1;
public var pageEndRow:uint = 0;
public function initApp():void{
txt.text = "Page " + currentPage;
totalRows = initDG.length;
if(initDG.length > pageRecordes){
dg.dataProvider = initDG.slice(0,pageRecordes);
pPage.enabled = false;
}
if((totalRows % pageRecordes) == 0){
totalPages = Math.floor(totalRows / pageRecordes);
}else{
totalPages = Math.floor(totalRows / pageRecordes + 1);
}
if(totalRows <= pageRecordes){
this.pageStartRow = 1;
this.pageEndRow = totalRows;
} else {
this.pageStartRow = 1;
this.pageEndRow = pageRecordes;
}
if(totalPages == 1){
pPage.enabled = false;
nPage.enabled = false;
}
}
public function showPreviousPage():void{
currentPage = currentPage - 1;
txt.text = "Page " + currentPage;
if(currentPage == 1){
pPage.enabled = false;
nPage.enabled = true;
}else{
pPage.enabled = true;
nPage.enabled = true;
}
if (currentPage == totalPages) {
pageStartRow = (currentPage - 1) * pageRecordes + 1;
pageEndRow = totalRows;
} else {
pageStartRow = (currentPage - 1) * pageRecordes + 1;
pageEndRow = currentPage * pageRecordes;
}
dg.dataProvider = initDG.slice(pageStartRow - 1,pageEndRow);
}
public function showNextPage():void{
currentPage = currentPage + 1;
txt.text = "Page " + currentPage;
if(currentPage == totalPages){
nPage.enabled = false;
pPage.enabled = true;
}else{
nPage.enabled = true;
pPage.enabled = true;
}
if (currentPage == totalPages) {
pageStartRow = (currentPage - 1) * pageRecordes + 1;
pageEndRow = totalRows;
} else {
pageStartRow = (currentPage - 1) * pageRecordes + 1;
pageEndRow = currentPage * pageRecordes;
}
dg.dataProvider = initDG.slice((currentPage - 1) * pageRecordes,pageEndRow);
}
public function showFirstPage():void{
dg.dataProvider = initDG.slice(0,pageRecordes);
pPage.enabled = false;
nPage.enabled = true;
txt.text = "Page " + 1;
currentPage = 1;
}
public function showLastPage():void{
dg.dataProvider = initDG.slice((totalPages - 1) * pageRecordes,totalRows);
pPage.enabled = true;
nPage.enabled = false;
txt.text = "Page " + totalPages;
currentPage = totalPages;
}
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