private void UpdateCheckboxState(TreeNodeCollection InTreeNodesList)
{
foreach (TreeNode TreeNode in InTreeNodesList)
{
var InternalNode = TreeNode.Tag as FilterTagsTreeNode;
if (InternalNode != null)
{
if (InternalNode.AllocTagNode.GetTag().HasValue)
{
TreeNode.Checked = ActiveTags.Contains(InternalNode.AllocTagNode.GetTag().Value);
}
else
{
// Hide the checkbox on non-tag nodes
FilterTagsTreeView.SetCheckBoxImageState(TreeNode, 0);
}
}
UpdateCheckboxState(TreeNode.Nodes);
}
}
private void PopulateTagFilterHierarchy(string[] InFilterTerms)
{
UseWaitCursor = true;
// Build the internal tree
{
InternalTreeRoot = new FilterTagsTreeNode(null);
var RootNode = FStreamInfo.GlobalInstance.TagHierarchy.GetRootNode();
BuildInternalTree(InFilterTerms, RootNode, InternalTreeRoot);
}
// Build the WinForm tree
if (FilterTagsTreeView.Handle != null) // This if statement exists to force the native tree view handle to be created
{
bool bIsFiltering = InFilterTerms != null && InFilterTerms.Length > 0;
FilterTagsTreeView.BeginUpdate();
FilterTagsTreeView.AfterCheck -= FilterTagsTreeView_AfterCheck;
FilterTagsTreeView.BeforeExpand -= FilterTagsTreeView_BeforeExpand;
FilterTagsTreeView.Nodes.Clear();
BuildFilterTagsTree(InternalTreeRoot, FilterTagsTreeView.Nodes, bIsFiltering);
UpdateCheckboxState(FilterTagsTreeView.Nodes);
if (bIsFiltering)
{
FilterTagsTreeView.ExpandAll();
}
FilterTagsTreeView.AfterCheck += FilterTagsTreeView_AfterCheck;
FilterTagsTreeView.BeforeExpand += FilterTagsTreeView_BeforeExpand;
FilterTagsTreeView.EndUpdate();
}
UseWaitCursor = false;
}
