Question

我正在尝试为树表构建一个刷新按钮。刷新操作（使用具有已定义过滤条件的bindrows方法）后，需要保留上一个标记的行。问题是，在刷新操作之后，标记的行将消失。我不确定addEventDelegate()是否是一种合适的方法，因为即使我在onAfterRendering()内设置了调试器，这种方法也无法做出任何反应。有没有人有解决这种情况的解决方案？

onRefresh : function() {
    var oTreeTable = this.getView().byId("treeTable");

    oTreeTable.bindRows({
        path: "/TTBL_Set",
        filters: filterRefresh,
        parameters: {
          countMode: "Request",
          numberOfExpandedLevels: 4
        }
    });

    oTreeTable.addEventDelegate({
        onAfterRendering: function() {              
          oTreeTable.setSelectedIndex(iCurrentSelectedIndex); //iCurrentSelectedIndex is pre-defined 
        }
    }, this);               
},

刷新事件后，需要保留树表中标记的行

Answer 1

您可以使用Custom Data和sap.ui.model.Binding attachDataReceived()

来实现这一目标

1.在行选择方法中保存选定的行上下文路径。

//inside rowSelectionChange() method
var oTTable = getYourTable;
    oCutsData = {},
    rowContextPath = oEvent.getSource().getBindingContext().getPath();
    if(oTTable && oTTable.data("selectedRows")){
        oCustData = oTTable.data("selectedRows");//add your new row selection context path and update the object
        oCutsData[rowContextPath] = rowContextPath; 
    }else{//for first selection
        oCutsData = {};
        oCutsData[rowContextPath] = rowContextPath;//create new object
    }
    oTTable.data("selectedRows",oCutsData);

2.收到数据后，循环自定义数据并再次选择行

var oTTable = this.getView().byId("yourTableID")
    if(oTTable){
        var oRowsBinding = oTTable.getBinding("rows");//Rows Binding
        oRowsBinding.attachDataReceived(function(oEvent){
            var oSelectedRows = oTTable.data("selectedRows");
            if(oSelectedRows){
                var oModel = getYourModel(); //Tree table model
                var sPath = null;//only for one selection
                for(var path in oSelectedRows){
                   sPath = oSelectedRows[path];                    
                }
                //get the row contexts and compare with the previous selected row and select
                var oRowContexts = oTTable._getRowContexts();
                for(var index in oRowContexts){
                   if(oRowContexts[index].context.getPath() === sPath ){
                      //Select the table row using row index
                      oTTable.setSelectedIndex(parseInt(index));
                      break;
                   }
                }
                //after the loop destroy the custom data using destroyCustomData()
                oTTable.destroyCustomData();
            }
        }.bind(this));
    }

将bindrows（）后面的标记行保留在treetable中

1 个答案: