public bool MoveToChild(string name, Type dataType)
{
NodePosition pos = CurrentPosition;
if (!MoveToFirstChild())
{
return(false);
}
do
{
if ((name == null || NodeName == name) && (dataType == null || (DataItem != null && dataType.IsInstanceOfType(DataItem))))
{
return(true);
}
} while (MoveNext());
MoveToPosition(pos);
return(false);
}
internal static void GetNodeInfo(ExtensibleTreeView tree, ITreeBuilder tb, NodeBuilder[] chain, object dataObject, out string text, out Gdk.Pixbuf icon, out Gdk.Pixbuf closedIcon)
{
icon = null;
closedIcon = null;
text = string.Empty;
NodePosition pos = tb.CurrentPosition;
foreach (NodeBuilder builder in chain)
{
try {
builder.BuildNode(tb, dataObject, ref text, ref icon, ref closedIcon);
} catch (Exception ex) {
LoggingService.LogError(ex.ToString());
}
tb.MoveToPosition(pos);
}
if (closedIcon == null)
{
closedIcon = icon;
}
if (tree.CopyObjects != null && ((IList)tree.CopyObjects).Contains(dataObject) && tree.CurrentTransferOperation == DragOperation.Move)
{
Gdk.Pixbuf gicon = tree.BuilderContext.GetComposedIcon(icon, "fade");
if (gicon == null)
{
gicon = ImageService.MakeTransparent(icon, 0.5);
tree.BuilderContext.CacheComposedIcon(icon, "fade", gicon);
}
icon = gicon;
gicon = tree.BuilderContext.GetComposedIcon(closedIcon, "fade");
if (gicon == null)
{
gicon = ImageService.MakeTransparent(closedIcon, 0.5);
tree.BuilderContext.CacheComposedIcon(closedIcon, "fade", gicon);
}
closedIcon = gicon;
}
}
public void ExpandToNode()
{
if (node != null)
{
NodePosition pos = CurrentPosition;
try {
if (!MoveToParent())
{
return;
}
ExpandToNode();
} finally {
MoveToPosition(pos);
Expanded = true;
}
}
else
{
navigator.ExpandToNode();
}
}
public bool MoveNext()
{
NodePosition oldPos = CurrentPosition;
if (node != null && node.Parent != null)
{
int i = node.Parent.Children.IndexOf(node);
if (i != -1 && i < node.Parent.Children.Count - 1)
{
node = node.Parent.Children [i + 1];
return(true);
}
// Position the navigator at the first child of the parent
if (!node.Parent.HasIter)
{
return(false);
}
node = node.Parent;
InitNavigator();
if (!navigator.MoveToFirstChild())
{
MoveToPosition(oldPos);
return(false);
}
if (CheckNode())
{
return(true);
}
}
InitNavigator();
while (navigator.MoveNext())
{
if (CheckNode())
{
return(true);
}
}
MoveToPosition(oldPos);
return(false);
}
TreeNode CreateNode(object dataObject)
{
if (dataObject == null)
{
throw new ArgumentNullException("dataObject");
}
NodeBuilder[] chain = tree.GetBuilderChain(dataObject.GetType());
if (chain == null)
{
return(null);
}
NodeAttributes ats;
NodePosition pos = CurrentPosition;
try {
ats = TreeBuilder.GetAttributes(this, chain, dataObject);
if ((ats & NodeAttributes.Hidden) != 0)
{
return(null);
}
} finally {
MoveToPosition(pos);
}
TreeNode n = new TreeNode();
n.DataItem = dataObject;
n.BuilderChain = chain;
n.Filled = false;
UpdateNode(n, chain, ats, dataObject);
n.Filled = !TreeBuilder.HasChildNodes(this, chain, dataObject);
tstore.RegisterNode(n);
return(n);
}
public object GetParentDataItem(Type type, bool includeCurrent)
{
if (includeCurrent && type.IsInstanceOfType(DataItem))
{
return(DataItem);
}
NodePosition pos = CurrentPosition;
try {
while (MoveToParent())
{
if (type.IsInstanceOfType(DataItem))
{
return(DataItem);
}
}
return(null);
} finally {
MoveToPosition(pos);
}
}
internal static NodeInfo GetNodeInfo(NodeInfo nodeInfo, ExtensibleTreeView tree, ITreeBuilder tb, NodeBuilder[] chain, object dataObject)
{
NodePosition pos = tb.CurrentPosition;
foreach (NodeBuilder builder in chain)
{
try {
builder.BuildNode(tb, dataObject, nodeInfo);
} catch (Exception ex) {
LoggingService.LogError(ex.ToString());
}
tb.MoveToPosition(pos);
}
if (nodeInfo.ClosedIcon == null)
{
nodeInfo.ClosedIcon = nodeInfo.Icon;
}
if (tree.CopyObjects != null && ((IList)tree.CopyObjects).Contains(dataObject) && tree.CurrentTransferOperation == DragOperation.Move)
{
var gicon = tree.BuilderContext.GetComposedIcon(nodeInfo.Icon, "fade");
if (gicon == null)
{
gicon = nodeInfo.Icon.WithAlpha(0.5);
tree.BuilderContext.CacheComposedIcon(nodeInfo.Icon, "fade", gicon);
}
nodeInfo.Icon = gicon;
gicon = tree.BuilderContext.GetComposedIcon(nodeInfo.ClosedIcon, "fade");
if (gicon == null)
{
gicon = nodeInfo.ClosedIcon.WithAlpha(0.5);
tree.BuilderContext.CacheComposedIcon(nodeInfo.ClosedIcon, "fade", gicon);
}
nodeInfo.ClosedIcon = gicon;
}
return(nodeInfo);
}
void FillNode()
{
node.Filled = true;
NodePosition pos = CurrentPosition;
foreach (NodeBuilder builder in node.BuilderChain)
{
try {
builder.PrepareChildNodes(node.DataItem);
} catch (Exception ex) {
LoggingService.LogError(ex.ToString());
}
MoveToPosition(pos);
}
foreach (NodeBuilder builder in node.BuilderChain)
{
try {
builder.BuildChildNodes(this, node.DataItem);
} catch (Exception ex) {
LoggingService.LogError(ex.ToString());
}
MoveToPosition(pos);
}
}
public bool MoveToPosition (NodePosition position)
{
if (position._node != null) {
node = (TreeNode) position._node;
return !node.Deleted;
}
else {
node = null;
return navigator.MoveToPosition (position) && CheckNode ();
}
}
public bool MoveToPosition(NodePosition position)
{
MoveToIter((Gtk.TreeIter)position._iter);
return(true);
}
public bool MoveToPosition(NodePosition position)
{
MoveToIter ((Gtk.TreeIter) position._iter);
return true;
}
