UWL Task: Approve/Reject

Question

Hi, take a look at following XML code. This task can either be approved or rejected by the user:
<ItemType name="uwl.task.webflow.decision.TS90100029.HR_System"
          connector="WebFlowConnector"
          defaultView="DefaultView"
          defaultAction="viewDetail"
          executionMode="default">
  <ItemTypeCriteria systemId="HR_System"
                    externalType="TS90100029"
                    connector="WebFlowConnector"/>
</ItemType>
Following is the code for defaultView. I don't understand how the Approve and Reject buttons show up in this view? And where are the actions that are linked to these buttons defined?
<View name="DefaultView"
      selectionMode="SINGLESELECT"
      width="98%"
      supportedItemTypes="uwl.task"
      columnOrder="statusIcon, subject, creatorId, createdDate, detailIcon"
      sortby="priority:descend, dueDate:ascend, createdDate:descend"
      tableDesign="STANDARD"
      visibleRowCount="10"
      headerVisible="yes"
      queryRange="undefined"
      tableNavigationFooterVisible="yes"
      tableNavigationType="CUSTOMNAV"
      actionRef=""
      refresh="300"
      dueDateSevere="86400000"
      dueDateWarning="259200000"
      emphasizedItems="new"
      displayOnlyDefinedAttributes="yes"
      dynamicCreationAllowed="yes"
      actionPosition="top"
      referenceBundle="tasks">
  <DisplayAttributes>
    <DisplayAttribute name="priority"
                      type="user"
                      width="10"
                      sortable="yes"
                      format="default"
                      referenceBundle="priority"
                      hAlign="LEFT"
                      vAlign="BASELINE"
                      maxTextWidth="0"
                      headerVisible="yes">
      <Menu>
        <MenuItem name="Low" actionRef="priorityLow" referenceBundle="menu_priority_low"/>
        <MenuItem name="Normal" actionRef="priorityNormal" referenceBundle="menu_priority_normal"/>
        <MenuItem name="High" actionRef="priorityHigh" referenceBundle="menu_priority_high"/>
        <MenuItem name="VeryHigh" actionRef="priorityVeryHigh" referenceBundle="menu_priority_v_high"/>
      </Menu>
    </DisplayAttribute>
  </DisplayAttributes>
  <Actions>
    <Action reference="refresh"/>
    <Action reference="defaultGlobalWizard"/>
    <Action reference="addToNavigation"/>
    <Action reference="removeFromNavigation"/>
    <Action reference="personalize"/>
    <Action reference="launchSubstitutionManager"/>
  </Actions>
</View>

Answer 1

Ok, but I don't see where I have to specify this. If I take a look at the XLM for this task, all it says is: view="defaultView", action="viewDetail", where the viewDetail action is defined as follows:
<Action name="viewDetail"
        groupAction="no"
        handler="UIActionHandler"
        referenceBundle="view_detail"
        returnToDetailViewAllowed="yes"
        launchInNewWindow="no">
  <Properties>
    <Property name="image" value="icon_detail.gif"/>
    <Property name="display_order_priority" value="-2"/>
  </Properties>
</Action>
so there isn't even a UserDecisionHandler to begin with?