/// <summary>
/// Initializes a new instance of the <see cref="UCNavigationMenu"/> class.
/// </summary>
public UCNavigationMenu()
{
InitializeComponent();
items = new NavigationMenuItem[0];
if (ControlHelper.IsDesignMode())
{
items = new NavigationMenuItem[4];
for (int i = 0; i < 4; i++)
{
items[i] = new NavigationMenuItem()
{
Text = "菜单" + (i + 1),
AnchorRight = i >= 2
};
}
}
}
/// <summary>
/// Handles the Click event of the lbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
void lbl_Click(object sender, EventArgs e)
{
Label lbl = sender as Label;
if (lbl.Tag != null)
{
var menu = (NavigationMenuItem)lbl.Tag;
if (menu.Items == null || menu.Items.Length <= 0)
{
selectItem = menu;
while (m_lstAnchors.Count > 0)
{
try
{
foreach (var item in m_lstAnchors)
{
item.Value.Close();
m_lstAnchors.Remove(item.Key);
}
}
catch { }
}
if (ClickItemed != null)
{
ClickItemed(this, e);
}
}
else
{
CloseList(menu);
if (m_lstAnchors.ContainsKey(menu))
{
if (m_lstAnchors[menu] != null && !m_lstAnchors[menu].IsDisposed)
{
m_lstAnchors[menu].Close();
}
m_lstAnchors.Remove(menu);
}
ShowMoreMenu(lbl);
}
}
}
/// <summary>
/// Closes the list.
/// </summary>
/// <param name="menu">The menu.</param>
private void CloseList(NavigationMenuItem menu)
{
if (menu.Items != null)
{
foreach (var item in menu.Items)
{
CloseList(item);
if (m_lstAnchors.ContainsKey(item))
{
if (m_lstAnchors[item] != null && !m_lstAnchors[item].IsDisposed)
{
m_lstAnchors[item].Close();
m_lstAnchors[item] = null;
m_lstAnchors.Remove(item);
}
}
}
}
}
/// <summary>
/// Checks the show.
/// </summary>
/// <param name="menu">The menu.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
private bool CheckShow(NavigationMenuItem menu)
{
//检查已经打开的节点
if (m_lstAnchors.ContainsKey(menu))
{
CloseList(menu);
return(false);
}
if (HasInCacheChild(menu))
{
if (m_lstAnchors.ContainsKey(menu.ParentItem))
{
CloseList(menu.ParentItem);
return(true);
}
return(false);
}
else
{
for (int i = 0; i < 1;)
{
try
{
foreach (var item in m_lstAnchors)
{
if (m_lstAnchors[item.Key] != null && !m_lstAnchors[item.Key].IsDisposed)
{
m_lstAnchors[item.Key].Close();
}
}
}
catch
{
continue;
}
i++;
}
m_lstAnchors.Clear();
return(true);
}
}
/// <summary>
/// Determines whether [has in cache child] [the specified menu].
/// </summary>
/// <param name="menu">The menu.</param>
/// <returns><c>true</c> if [has in cache child] [the specified menu]; otherwise, <c>false</c>.</returns>
private bool HasInCacheChild(NavigationMenuItem menu)
{
foreach (var item in m_lstAnchors)
{
if (item.Key == menu)
{
return(true);
}
else
{
if (item.Key.Items != null)
{
if (item.Key.Items.Contains(menu))
{
return(true);
}
}
}
}
return(false);
}
