Flex中TabNavigator隱藏和顯示選項卡

1、問題背景

遇到這樣一個問題：有四個Tab選項卡，根據不同的參數隱藏和顯示選項卡

2、實現實例

（1）隱藏“春季”

protected function springClickHandler(event:MouseEvent):void
{
	tabs.getTabAt(0).visible = false;
	tabs.getTabAt(0).includeInLayout = false;
	tabs.getTabAt(1).visible = true;
	tabs.getTabAt(1).includeInLayout = true;
	tabs.getTabAt(2).visible = true;
	tabs.getTabAt(2).includeInLayout = true;
	tabs.getTabAt(3).visible = true;
	tabs.getTabAt(3).includeInLayout = true;
	tabs.selectedIndex = 1;
}

protected function summerClickHandler(event:MouseEvent):void
{
	tabs.getTabAt(0).visible = true;
	tabs.getTabAt(0).includeInLayout = true;
	tabs.getTabAt(1).visible = false;
	tabs.getTabAt(1).includeInLayout = false;
	tabs.getTabAt(2).visible = true;
	tabs.getTabAt(2).includeInLayout = true;
	tabs.getTabAt(3).visible = true;
	tabs.getTabAt(3).includeInLayout = true;
	tabs.selectedIndex = 0;
}

protected function autumnClickHandler(event:MouseEvent):void
{
	tabs.getTabAt(0).visible = true;
	tabs.getTabAt(0).includeInLayout = true;
	tabs.getTabAt(1).visible = true;
	tabs.getTabAt(1).includeInLayout = true;
	tabs.getTabAt(2).visible = false;
	tabs.getTabAt(2).includeInLayout = false;
	tabs.getTabAt(3).visible = true;
	tabs.getTabAt(3).includeInLayout = true;
	tabs.selectedIndex = 0;
}

protected function winterClickHandler(event:MouseEvent):void
{
	tabs.getTabAt(0).visible = true;
	tabs.getTabAt(0).includeInLayout = true;
	tabs.getTabAt(1).visible = true;
	tabs.getTabAt(1).includeInLayout = true;
	tabs.getTabAt(2).visible = true;
	tabs.getTabAt(2).includeInLayout = true;
	tabs.getTabAt(3).visible = false;
	tabs.getTabAt(3).includeInLayout = false;
	tabs.selectedIndex = 0;
}

（5）顯示“四季”

protected function fourClickHandler(event:MouseEvent):void
{
	tabs.getTabAt(0).visible = true;
	tabs.getTabAt(0).includeInLayout = true;
	tabs.getTabAt(1).visible = true;
	tabs.getTabAt(1).includeInLayout = true;
	tabs.getTabAt(2).visible = true;
	tabs.getTabAt(2).includeInLayout = true;
	tabs.getTabAt(3).visible = true;
	tabs.getTabAt(3).includeInLayout = true;
	tabs.selectedIndex = 0;
}

（1）初始化

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（3）點擊“夏季”按鈕

（4）點擊“秋季”按鈕

（5）點擊“冬季”按鈕

（6）點擊“四季”按鈕