public void SetCheckState(TristateTreeNodeState state, bool bubbleToChildren, bool bubbleToParent)
{
bool disabled = (this.checkboxState & TristateTreeNodeState.Disabled) > 0;
TristateTreeNodeState flags = disabled ? TristateTreeNodeState.Disabled : TristateTreeNodeState.Empty;
flags |= state;
this.checkboxState = flags;
if (bubbleToChildren)
{
ModifyChildState();
}
//Update parent
if (this.parent is TristateTreeNode && bubbleToParent)
{
((TristateTreeNode)this.parent).UpdateCheckState(false, true);
}
if (this.nodeType == TristateTreeNodeType.RadioChild && state == TristateTreeNodeState.Checked)
{
//iterate through parent and set everyone else to off
if (this.parent is TristateTreeNode)
{
foreach (TristateTreeNode neighbor in ((TristateTreeNode)this.parent).nodes.ToList())
{
if (neighbor != this)
{
neighbor.SetCheckState(TristateTreeNodeState.Unchecked, true, false);
}
}
}
else
{
foreach (TristateTreeNode neighbor in ((TristateTreeView)this.parent).Nodes.ToList())
{
if (neighbor != this)
{
neighbor.SetCheckState(TristateTreeNodeState.Unchecked, true, false);
}
}
}
this.checkboxState = TristateTreeNodeState.Checked;
}
}
public void UpdateCheckState(bool bubbleToChildren, bool bubbleToParent)
{
if (this.nodes.Count == 0)
{
return;
}
bool allChecked = true;
bool allEmpty = true;
for (int i = 0; i < this.nodes.Count; i++)
{
TristateTreeNodeState state = this.nodes[i].CheckState;
if (state == TristateTreeNodeState.Checked)
{
allEmpty = false;
}
else if (state == TristateTreeNodeState.Unchecked)
{
allChecked = false;
}
else //partial
{
allEmpty = false;
allChecked = false;
}
}
if (allChecked)
{
SetCheckState(TristateTreeNodeState.Checked, bubbleToChildren, bubbleToParent);
}
else if (allEmpty)
{
SetCheckState(TristateTreeNodeState.Unchecked, bubbleToChildren, bubbleToParent);
}
else
{
SetCheckState(TristateTreeNodeState.Partial, bubbleToChildren, bubbleToParent);
}
}
public void SetCheckState(TristateTreeNodeState state, bool bubbleToChildren, bool bubbleToParent)
{
bool disabled = (this.checkboxState & TristateTreeNodeState.Disabled) > 0;
TristateTreeNodeState flags = disabled ? TristateTreeNodeState.Disabled : TristateTreeNodeState.Empty;
flags |= state;
this.checkboxState = flags;
if(bubbleToChildren)
ModifyChildState();
//Update parent
if (this.parent is TristateTreeNode && bubbleToParent)
((TristateTreeNode)this.parent).UpdateCheckState(false, true);
if (this.nodeType == TristateTreeNodeType.RadioChild && state == TristateTreeNodeState.Checked)
{
//iterate through parent and set everyone else to off
if (this.parent is TristateTreeNode)
foreach (TristateTreeNode neighbor in ((TristateTreeNode)this.parent).nodes.ToList())
{
if (neighbor != this)
neighbor.SetCheckState(TristateTreeNodeState.Unchecked, true, false);
}
else
foreach (TristateTreeNode neighbor in ((TristateTreeView)this.parent).Nodes.ToList())
{
if (neighbor != this)
neighbor.SetCheckState(TristateTreeNodeState.Unchecked, true, false);
}
this.checkboxState = TristateTreeNodeState.Checked;
}
}
