/// <summary>
/// 初次加载多页Tab，可用于动态选择Tab
/// </summary>
/// <param name="p_tabs"></param>
protected virtual void OnInitPhoneTabs(PhoneTabs p_tabs)
{
}
/// <summary>
/// 导航到多页Tab
/// </summary>
/// <param name="p_tabTitle"></param>
void NaviToMultiTabs(string p_tabTitle)
{
// 判断是否为向后导航
var frame = SysVisual.RootFrame;
if (frame.BackStackDepth > _frameStartIndex)
{
// 向后查询
int index = -1;
for (int i = frame.BackStackDepth - 1; i >= _frameStartIndex; i--)
{
var pageEntry = frame.BackStack[i];
if (pageEntry.Parameter is PhonePageParameter param &&
param.Content is PhoneTabs pts &&
pts.NaviID == p_tabTitle)
{
// 后退位置
index = i;
break;
}
}
if (index > 0)
{
// 向后导航
for (int i = frame.BackStackDepth - 1; i >= index; i--)
{
if (frame.CanGoBack)
{
frame.GoBack();
}
}
return;
}
}
// 向前导航
PhoneTabs tabs;
if (_cacheMultiTabs != null)
{
tabs = (from t in _cacheMultiTabs
where t.NaviID == p_tabTitle
select t).FirstOrDefault();
if (tabs != null)
{
// 缓存中存在
PhonePage.Show(tabs);
return;
}
}
tabs = new PhoneTabs();
tabs.NaviID = p_tabTitle;
if (p_tabTitle == Home)
{
tabs.OwnWin = this;
}
Tab tab;
string[] names = p_tabTitle.Split(',');
foreach (var name in names)
{
if (!_tabs.TryGetValue(name, out tab))
{
throw new Exception($"导航出错，缺少{name}Tab页！");
}
tabs.AddItem(tab);
}
// 起始页隐藏返回按钮
if (frame.Content == null)
{
tabs.HideBackButton();
}
tabs.Select(0);
if (_cacheMultiTabs == null)
{
_cacheMultiTabs = new List <PhoneTabs>();
}
_cacheMultiTabs.Add(tabs);
OnInitPhoneTabs(tabs);
PhonePage.Show(tabs);
}