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表中的java ADF复选框,所选行缺少计时

我有一个表,第一列应该是一个复选框,这样你可以选择一堆行,现在,只需将它添加到存储在pageflowscope中的列表中。问题是,单击复选框有时会使选定的行落后,并添加错误的行。例如,我单击第一行中的复选框,然后在它处理时,我取消选中它,然后单击另一个复选框,它仍然会添加第一行,因为它认为所选的行仍然是第一行

表:

 <af:table value="#{bindings.documents.collectionModel}" var="row" rows="#{bindings.documents.rangeSize}"
                  emptyText="#{bindings.documents.viewable ? 'No data to display.' : 'Access Denied.'}"
                  rowBandingInterval="0" selectedRowKeys="#{bindings.documents.collectionModel.selectedRow}"
                  selectionListener="#{bindings.documents.collectionModel.makeCurrent}" rowSelection="single"
                  fetchSize="#{bindings.documents.rangeSize}" filterModel="#{bindings.documentsQuery.queryDescriptor}"
                  filterVisible="true" queryListener="#{bindings.documentsQuery.processQuery}" varStatus="vs" id="t1"
                  autoHeightRows="0" styleClass="AFStretchWidth" scrollPolicy="page">
            <af:column id="c41" align="center" width="50">
                <?audit suppress oracle.adf.faces.tablecolneedsheaders?>
                <af:selectBooleanCheckbox id="sbc1" valueChangeListener="#{CopyQueueBean.toggleCheckbox}"
                                          autoSubmit="true">
                    <?audit suppress oracle.adf.faces.compnotlabelled?>
                </af:selectBooleanCheckbox>
            </af:column>

            <af:column sortProperty="#{bindings.documents.hints.id.name}" filterable="true" sortable="true"
                       headerText="#{labels.ID}" id="c1" align="center">
                <af:outputText value="#{row.id}" shortDesc="#{bindings.documents.hints.id.tooltip}" id="ot1"/>
            </af:column>
            <af:column sortProperty="#{bindings.documents.hints.fileName.name}" filterable="true" sortable="true"
                       headerText="#{labels.TITLE}" id="c4" align="center" width="400">
                <af:panelGroupLayout id="pgl2" styleClass="AFStretchWidth" inlineStyle="float:left; text-align:left;">
                        <af:spacer width="20px" id="leftIconSpacer" />
                        <af:image source="#{row.icon}" id="i6"
                                  inlineStyle="width:40.0px;"/>
                        <af:spacer width="40px" id="iconSpacer" />
                        <af:outputText value="#{row.fileName}" id="fot2"/>
                    </af:panelGroupLayout>
            </af:column>

我的Bean方法:

public void toggleCheckbox(ValueChangeEvent valueChangeEvent) {
    // Add event code here...
    Boolean checked = (Boolean) valueChangeEvent.getNewValue();
    //get list
    ADFContext adfCtx = ADFContext.getCurrent();
    Map params = adfCtx.getPageFlowScope();
    List<Row> list = (List<Row>) params.get("docQueue");
    if (list == null) {
        list = new ArrayList<CopyQueuePojo>();
    }

    DCBindingContainer bindings = (DCBindingContainer) BindingContext.getCurrent().getCurrentBindingsEntry();
    DCIteratorBinding documents = bindings.findIteratorBinding("documentsIterator");
    int index = documents.getCurrentRowIndexInRange();

    Row[] rows = documents.getAllRowsInRange();
    Row line = rows[index];

    if (checked) {
        //add to queue
        if (index >=  0) {                
            //check to make sure there are no duplicates
            boolean exists = false;
            for(int i=0; i<list.size(); i++) {
                if(list.get(i).getId() == ((String) line.getAttribute("id"))) {
                    exists = true; 
                    break;
                }
            }
            if (!exists) {                    
                list.add(line);
            }
        }
    } else {
        //remove from queue
        for(int i=0; i<list.size(); i++) {
            if(list.get(i).getId() == ((String) line.getAttribute("id"))) {
                list.remove(i);
            }
        }
    }
    params.put("docQueue", list);
}

JDEVELOPER:12.2.1.2.0

我应该使用不同的方式来设置所选行吗?或者我不应该使用valuechangelistener?还是别的什么


共 (1) 个答案

  1. # 1 楼答案

    向基于ViewObject的表中添加selectBooleanCheckbox的最佳方法是向ViewObject中添加布尔瞬时值。这样做将允许为每一行保存不同的布尔值,并以与其他列值相同的方式轻松访问它

    为此:

    1)将isSelected布尔瞬态属性添加到ViewObject:

    <ViewAttribute
    Name="isSelected"
    IsSelected="false"
    IsPersistent="false"
    PrecisionRule="true"
    Type="java.lang.Boolean"
    ColumnType="NUMBER"
    AliasName="VIEW_ATTR"
    SQLType="BIT"
    Passivate="true">
    <DesignTime>
      <Attr Name="_diagramName" Value=" "/>
    </DesignTime>
    <Properties>
      <SchemaBasedProperties>
        <CONTROLTYPE
          Value="check_box"/>
        <DISPLAYWIDTH
          Value="10"/>
        <DISPLAYHEIGHT
          Value="10"/>
      </SchemaBasedProperties>
    </Properties>
    

    2)将ViewObject作为表格拖放到视图中,应添加以下列:

    <af:column sortable="false" id="c1" width="20">
        <af:selectBooleanCheckbox value="#{row.bindings.isSelected.inputValue}" label="#{row.bindings.isSelected.label}" id="sbc1"/>
    </af:column>
    

    3)在Bean操作中,轻松获取布尔值:

        Boolean val = (Boolean )JSFUtils.resolveExpression("#{row.bindings.isSelected.inputValue}");