public function exchangeWidget(IView $aView, $sWidgetId, $nWay = self::MODEL_TO_WIDGET)
{
if (!isset($this->arrLinks[$sWidgetId])) {
return;
}
if (!($aModel = $aView->model())) {
throw new Exception("视图尚未设置模型，无法进行数据交换");
}
if (!($aWidget = $aView->widget($sWidgetId))) {
throw new Exception("视图中缺少指定的窗体（%s），无法进行数据交换", $sWidgetId);
}
switch ($nWay) {
// 从模型数据到ui窗体
case self::MODEL_TO_WIDGET:
$sModelName = end($this->arrLinks[$sWidgetId]);
$aWidget->setValueFromString($aModel->data($sModelName));
break;
// 从ui窗体到模型控件
// 从ui窗体到模型控件
case self::WIDGET_TO_MODEL:
$widgetVal = $aWidget->valueToString();
foreach ($this->arrLinks[$sWidgetId] as $sModelName) {
$aModel->setData($sModelName, $widgetVal);
}
break;
default:
throw new Exception("参数（\$nWay）无效");
break;
}
}
