/// <summary>
/// The <see cref="Control.Click"/> event handler for the
/// <see cref="Button"/> <see cref="btnLevelDown"/>.
/// Move the selected nodes one level down if possible.
/// Create a new parent node to add the selection, if there
/// is no child node to move the selected nodes to.
/// </summary>
/// <param name="sender">Source of the event.</param>
/// <param name="e">An empty <see cref="EventArgs"/></param>
private void btnLevelDown_Click(object sender, EventArgs e)
{
NodesCollection nodes = this.trvSlideshow.SelectedNodes;
nodes.Sort();
if (nodes.Count > 0)
{
TreeNode firstNode = nodes[0];
// Skip if the node is the root node or at level 1
if (firstNode.Parent == null || firstNode.Parent.Parent == null)
{
return;
}
int insertionIndex = firstNode.Index;
TreeNode newParent = firstNode.Parent.Parent;
for (int i = nodes.Count - 1; i >= 0; i--)
{
TreeNode collectionNode = nodes[i];
collectionNode.Remove();
newParent.Nodes.Insert(insertionIndex, collectionNode);
}
}
this.UpdateListView(this.trvSlideshow.SelectedNodes);
this.SlideShowModified();
}
/// <summary>
/// This method moves the given nodes on level up.
/// They can be marked as a trial using the second parameter.
/// </summary>
/// <param name="nodes">A <see cref="NodesCollection"/> with the <see cref="TreeView"/> nodes.</param>
/// <param name="markAsTrial"><strong>True</strong> if the nodes in the collection
/// are referred to be one trial in the presentation.</param>
private void MoveNodesLevelUp(NodesCollection nodes, bool markAsTrial)
{
nodes.Sort();
if (nodes.Count > 0)
{
TreeNode firstNode = nodes[0];
// Skip if the node is the root node
if (firstNode.Parent == null)
{
return;
}
int insertionIndex = firstNode.Index;
string parentNodeName = this.slideshow.GetUnusedNodeID();
SlideshowTreeNode newParent = new SlideshowTreeNode(parentNodeName);
newParent.Name = parentNodeName;
if (markAsTrial)
{
newParent.Tag = "Trial";
}
newParent.SetTreeNodeImageKey(newParent);
firstNode.Parent.Nodes.Insert(insertionIndex, newParent);
foreach (TreeNode collectionNode in nodes)
{
collectionNode.Remove();
newParent.Nodes.Add(collectionNode);
}
}
this.UpdateListView(this.trvSlideshow.SelectedNodes);
this.SlideShowModified();
}
/// <summary>
/// This method moves the given nodes on level up.
/// They can be marked as a trial using the second parameter.
/// </summary>
/// <param name="nodes">A <see cref="NodesCollection"/> with the <see cref="TreeView"/> nodes.</param>
/// <param name="markAsTrial"><strong>True</strong> if the nodes in the collection
/// are referred to be one trial in the presentation.</param>
private void MoveNodesLevelUp(NodesCollection nodes, bool markAsTrial)
{
nodes.Sort();
if (nodes.Count > 0)
{
TreeNode firstNode = nodes[0];
// Skip if the node is the root node
if (firstNode.Parent == null)
{
return;
}
int insertionIndex = firstNode.Index;
string parentNodeName = this.slideshow.GetUnusedNodeID();
SlideshowTreeNode newParent = new SlideshowTreeNode(parentNodeName);
newParent.Name = parentNodeName;
if (markAsTrial)
{
newParent.Tag = "Trial";
}
newParent.SetTreeNodeImageKey(newParent);
firstNode.Parent.Nodes.Insert(insertionIndex, newParent);
foreach (TreeNode collectionNode in nodes)
{
collectionNode.Remove();
newParent.Nodes.Add(collectionNode);
}
}
this.UpdateListView(this.trvSlideshow.SelectedNodes);
this.SlideShowModified();
}