GWT排序单元格表,可能只是我没有看到的东西 [英] GWT Sorting a cell table, probably just something i didn't saw
问题描述
我一直在努力尝试对GWT CellTable进行排序。
这真是一个愚蠢的问题,因为它已经在这里完成
http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable
但我不明白我缺少什么在例子中...
这里是我用来创建列的代码:
列< RemoteCommand,String> nbProducts = new Column< RemoteCommand,String>(
new TextCell()){
@Override
public String getValue(RemoteCommand object){
return object.getNumberProduct();
}
};
nbProducts.setSortable(true);
sortHandler.setComparator(nbProducts,new Comparator< RemoteCommand>(){
public int compare(RemoteCommand o1,RemoteCommand o2){
cellTable.redraw();
return o1。 getCommandSize()。compareTo(o2.getCommandSize());
// System.out.println(Integer.parseInt(o1.getCommandSize()) - Integer.parseInt(o2.getCommandSize()));
// return Integer.parseInt(o1.getCommandSize()) - Integer.parseInt(o2.getCommandSize());
}
});
这里是表格本身的声明:
//添加一个选择模型,以便我们可以选择单元格。
final SelectionModel< RemoteCommand> selectionModel = new MultiSelectionModel< RemoteCommand>(
RemoteCommand.KEY_PROVIDER);
cellTable.setSelectionModel(selectionModel,
DefaultSelectionEventManager。< RemoteCommand> createCheckboxManager());
//将列排序处理程序附加到ListDataProvider以对列表进行排序。
ListHandler< RemoteCommand> sortHandler = new ListHandler< RemoteCommand>(values);
cellTable.addColumnSortHandler(sortHandler);
//初始化列。
initTableColumns(selectionModel,sortHandler);
cellTable.setRowData(values);
help is requierd:)
我猜你已经找到了解决方案,但只是为了保持它在这里:
首先,用一些已知的List创建你的dataProvider 。
比使用相同的List提供sortHandler;
并使用列表更新数据。
Celltable应该设置为dataProvider的dataDisplay:
List myDataList = new ArrayList();
ListDataProvider dataProvider = new ListDataProvider(KEY_PROVIDER);
dataProvider.setList(myDataList);
ListHandler sortHandler = new ListHandler(dataProvider.getList);
//绑定提供者和表
dataProvider.addDataDisplay(cellTable);
//当您需要更新数据提供者
时//首先执行一些myDataList清除以删除旧值
myListData.addAll(values);
//更新数据显示
dataProvider.refresh();
考虑到,您必须始终使用同一个List对象。
I've been struggling for the last couple of hour trying to sort a GWT CellTable. It's really a stupid problem because it's been done here http://gwt.google.com/samples/Showcase/Showcase.html#!CwCellTable
But I do not understand what I'm missing in the exemple ...
Here is my code I use to create the column:
Column<RemoteCommand, String> nbProducts = new Column<RemoteCommand, String>(
new TextCell()) {
@Override
public String getValue(RemoteCommand object) {
return object.getNumberProduct();
}
};
nbProducts.setSortable(true);
sortHandler.setComparator(nbProducts, new Comparator<RemoteCommand>() {
public int compare(RemoteCommand o1, RemoteCommand o2) {
cellTable.redraw();
return o1.getCommandSize().compareTo(o2.getCommandSize());
// System.out.println(Integer.parseInt(o1.getCommandSize() ) - Integer.parseInt(o2.getCommandSize()));
// return Integer.parseInt(o1.getCommandSize() ) - Integer.parseInt(o2.getCommandSize());
}
});
And here is the declaration of the table itself:
// Add a selection model so we can select cells.
final SelectionModel<RemoteCommand> selectionModel = new MultiSelectionModel<RemoteCommand>(
RemoteCommand.KEY_PROVIDER);
cellTable.setSelectionModel(selectionModel,
DefaultSelectionEventManager.<RemoteCommand> createCheckboxManager());
// Attach a column sort handler to the ListDataProvider to sort the list.
ListHandler<RemoteCommand> sortHandler = new ListHandler<RemoteCommand>(values);
cellTable.addColumnSortHandler(sortHandler);
// Initialize the columns.
initTableColumns(selectionModel, sortHandler);
cellTable.setRowData(values);
help is requierd :)
i guess You've already found the solution, but just to keep it here:
First, create your dataProvider with some known List. Than feed sortHandler with same List; and use the list to update data. Celltable should be set as dataDisplay of the dataProvider:
List myDataList = new ArrayList();
ListDataProvider dataProvider = new ListDataProvider(KEY_PROVIDER);
dataProvider.setList(myDataList);
ListHandler sortHandler = new ListHandler(dataProvider.getList);
//tie provider and table
dataProvider.addDataDisplay(cellTable);
//when you need to update dataprovider
//first do some myDataList cleanup to remove old values
myListData.addAll(values);
//update data displays
dataProvider.refresh();
Consider, you have to always use one and the same List object.
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