/// <summary>
/// 选中所有展开的节点
/// </summary>
public void SelectAllExpandChildren()
{
if (Items != null && Items.Count > 0)
{
if (!IsExpanded)
{
IsExpanded = true;
}
foreach (var item in Items)
{
if (item is MultiSelectionTreeViewItem)
{
(item as MultiSelectionTreeViewItem).SelectAllExpandChildren();
}
else
{
MultiSelectionTreeViewItem tvi = this.ItemContainerGenerator.ContainerFromItem(item) as MultiSelectionTreeViewItem;
if (tvi != null)
{
if (tvi.ItemContainerGenerator.Status != System.Windows.Controls.Primitives.GeneratorStatus.ContainersGenerated)
{
tvi.UpdateLayout();
}
tvi.SelectAllExpandChildren();
}
}
}
}
if (IsSelected != true)
{
IsSelected = true;
}
//TODO:
ParentTreeView.OnSelectionChnanged(this);
}
/// <summary>
/// 展开所有子节点
/// </summary>
public void ExpandAllChildren()
{
if (Items != null && Items.Count > 0)
{
foreach (var item in Items)
{
if (item is MultiSelectionTreeViewItem)
{
MultiSelectionTreeViewItem tvi = item as MultiSelectionTreeViewItem;
if (!tvi.IsExpanded)
{
tvi.IsExpanded = true;
}
tvi.ExpandAllChildren();
}
else
{
MultiSelectionTreeViewItem tvi = this.ItemContainerGenerator.ContainerFromItem(item) as MultiSelectionTreeViewItem;
if (tvi != null)
{
if (!tvi.IsExpanded)
{
tvi.IsExpanded = true;
}
//如果子项还没有初始化容器，则刷新布局获取容器，保证取遍历的时候取到
if (tvi.ItemContainerGenerator.Status != System.Windows.Controls.Primitives.GeneratorStatus.ContainersGenerated)
{
tvi.UpdateLayout();
}
tvi.ExpandAllChildren();
}
}
}
}
}
private static void OnIsDropDownOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CheckBoxTreeView cb = (CheckBoxTreeView)d;
if (cb._poup != null)
{
if ((bool)e.NewValue)
{
cb.Dispatcher.BeginInvoke(DispatcherPriority.Send, (DispatcherOperationCallback) delegate(object arg)
{
//展开所有子节点
if (cb._treeView != null && cb.ItemsSource != null)
{
foreach (var item in cb._treeView.Items)
{
if (item is MultiSelectionTreeViewItem)
{
(item as MultiSelectionTreeViewItem).IsExpanded = true;
}
else
{
MultiSelectionTreeViewItem tvi = cb._treeView.ItemContainerGenerator.ContainerFromItem(item) as MultiSelectionTreeViewItem;
if (tvi != null)
{
if (!tvi.IsExpanded)
{
tvi.IsExpanded = true;
}
//如果子项还没有初始化容器，则刷新布局获取容器，保证取遍历的时候取到
if (tvi.ItemContainerGenerator.Status != System.Windows.Controls.Primitives.GeneratorStatus.ContainersGenerated)
{
tvi.UpdateLayout();
}
tvi.ExpandAllChildren();
}
}
}
}
return(null);
}, cb);
}
}
}
