public void UpdateBreadCrumb(RadTreeNode node)
{
this.ClearCurrentItems();
Stack <RadSplitButtonElement> stack = new Stack <RadSplitButtonElement>();
RadTreeNode lastNode = null;
Image firstNodeImage = node.Image;
// gets the image of the selected node
while (node != null)
{
RadSplitButtonElement ddButton = new RadSplitButtonElement();
ddButton.Text = node.Text;
ddButton.TextImageRelation = System.Windows.Forms.TextImageRelation.ImageBeforeText;
// split button without children shouldn't have an arrow next to it
if (node.Nodes.Count == 0)
{
ddButton.ShowArrow = false;
}
this.SetDropDownItems(node, lastNode, ddButton);
ddButton.Text = node.Text;
stack.Push(ddButton);
lastNode = node;
node = node.Parent;
}
AddBreadCrumbsChildren(stack, firstNodeImage);
}
/// <summary>
/// Create main button element that is specific for RadSplitButton.
/// </summary>
/// <returns>The element that encapsulates the funtionality of RadSplitButton</returns>
protected override RadDropDownButtonElement CreateButtonElement()
{
RadSplitButtonElement res = new RadSplitButtonElement();
res.DefaultItemChanged += new EventHandler(SplitButtonElement_DefaultItemChanged);
return(res);
}
private void currentSplitButton_MouseEnter(object sender, EventArgs e)
{
if (this.dropDownOpened)
{
RadSplitButtonElement splitButton = sender as RadSplitButtonElement;
if (splitButton != null)
{
// if the current split button is the sender doesn't do anything
// else if another split button is the sender then hides
// the current drop down and openes the sender's one
if (splitButton == this.currentExpandedSplitButton)
{
return;
}
if (this.currentExpandedSplitButton != null)
{
this.currentExpandedSplitButton.HideDropDown();
}
this.currentExpandedSplitButton = splitButton;
if (!splitButton.IsDropDownShown)
{
splitButton.ShowDropDown();
}
}
}
}
private void AddBreadCrumbsChildren(Stack <RadSplitButtonElement> stack, Image firstNodeImage)
{
Size empty = Size.Empty;
Graphics graphics = this.CreateGraphics();
bool flag = false;
while (stack.Count > 0)
{
RadSplitButtonElement splitButtonElement = stack.Pop();
if (!flag)
{
Size size = Size.Ceiling(graphics.MeasureString(splitButtonElement.Text, splitButtonElement.Font));
if (!size.IsEmpty && firstNodeImage != null)
{
splitButtonElement.Image = (Image) new Bitmap(firstNodeImage, new Size(Math.Min(size.Height, firstNodeImage.Width), Math.Min(size.Height, firstNodeImage.Width)));
}
flag = true;
}
splitButtonElement.DropDownOpened += new EventHandler(this.currentSplitButton_DropDownOpened);
splitButtonElement.DropDownClosed += new EventHandler(this.currentSplitButton_DropDownClosed);
splitButtonElement.MouseEnter += new EventHandler(this.currentSplitButton_MouseEnter);
this.breadCrumbElement.Items.Add((RadItem)splitButtonElement);
}
graphics.Dispose();
}
protected override RadDropDownButtonElement CreateButtonElement()
{
RadSplitButtonElement splitButtonElement = new RadSplitButtonElement();
splitButtonElement.DefaultItemChanged += new EventHandler(this.SplitButtonElement_DefaultItemChanged);
return((RadDropDownButtonElement)splitButtonElement);
}
private void ClearCurrentItems()
{
while (this.breadCrumbElement.Items.Count > 0)
{
RadSplitButtonElement splitButtonElement = this.breadCrumbElement.Items[0] as RadSplitButtonElement;
splitButtonElement.DropDownOpened -= new EventHandler(this.currentSplitButton_DropDownOpened);
splitButtonElement.DropDownClosed -= new EventHandler(this.currentSplitButton_DropDownClosed);
splitButtonElement.MouseEnter -= new EventHandler(this.currentSplitButton_MouseEnter);
foreach (RadElement radElement in (RadItemCollection)splitButtonElement.Items)
{
radElement.Click -= new EventHandler(this.item_Click);
}
this.breadCrumbElement.Items[0].Dispose();
}
}
private void SetDropDownItems(
RadTreeNode node,
RadTreeNode lastNode,
RadSplitButtonElement ddButton)
{
for (int index = 0; index < node.Nodes.Count; ++index)
{
RadBreadCrumb.AssociatedMenuItem associatedMenuItem = new RadBreadCrumb.AssociatedMenuItem(node.Nodes[index]);
associatedMenuItem.Click += new EventHandler(this.item_Click);
if (lastNode == node.Nodes[index])
{
associatedMenuItem.Font = new Font(associatedMenuItem.Font, FontStyle.Bold);
}
associatedMenuItem.Image = node.Nodes[index].Image;
associatedMenuItem.Text = node.Nodes[index].Text;
ddButton.Items.Add((RadItem)associatedMenuItem);
}
}
private void SetDropDownItems(RadTreeNode node, RadTreeNode lastNode, RadSplitButtonElement ddButton)
{
// adds and initializes the drop down items of ddButton instance of RadSplitButtonElement
for (int i = 0; i < node.Nodes.Count; i++)
{
AssociatedMenuItem item = new AssociatedMenuItem(node.Nodes[i]);
item.Click += new EventHandler(item_Click);
if (lastNode == node.Nodes[i])
{
item.Font = new System.Drawing.Font(item.Font, System.Drawing.FontStyle.Bold);
}
item.Image = node.Nodes[i].Image;
item.Text = node.Nodes[i].Text;
ddButton.Items.Add(item);
}
}
private void AddBreadCrumbsChildren(Stack <RadSplitButtonElement> stack, Image firstNodeImage)
{
Size textSize = Size.Empty;
Graphics graphics = this.CreateGraphics();
RadSplitButtonElement currentSplitButton = null;
bool anyPoppedElements = false;
while (stack.Count > 0)
{
currentSplitButton = stack.Pop();
if (!anyPoppedElements)
{
textSize = Size.Ceiling(graphics.MeasureString(currentSplitButton.Text,
currentSplitButton.Font));
if (!textSize.IsEmpty && firstNodeImage != null)
{
// sets the selected node's image next to the first split button
currentSplitButton.Image = new Bitmap(firstNodeImage, new Size(
Math.Min(textSize.Height, firstNodeImage.Width),
Math.Min(textSize.Height, firstNodeImage.Width)
));
}
anyPoppedElements = true;
}
// subscribes each splitbutton to the following events
currentSplitButton.DropDownOpened += new EventHandler(currentSplitButton_DropDownOpened);
currentSplitButton.DropDownClosed += new EventHandler(currentSplitButton_DropDownClosed);
currentSplitButton.MouseEnter += new EventHandler(currentSplitButton_MouseEnter);
this.breadCrumbElement.Items.Add(currentSplitButton);
}
graphics.Dispose();
}
private void currentSplitButton_MouseEnter(object sender, EventArgs e)
{
if (!this.dropDownOpened)
{
return;
}
RadSplitButtonElement splitButtonElement = sender as RadSplitButtonElement;
if (splitButtonElement == null || splitButtonElement == this.currentExpandedSplitButton)
{
return;
}
if (this.currentExpandedSplitButton != null)
{
this.currentExpandedSplitButton.HideDropDown();
}
this.currentExpandedSplitButton = splitButtonElement;
if (splitButtonElement.IsDropDownShown)
{
return;
}
splitButtonElement.ShowDropDown();
}
public void UpdateBreadCrumb(RadTreeNode node)
{
this.ClearCurrentItems();
Stack <RadSplitButtonElement> stack = new Stack <RadSplitButtonElement>();
RadTreeNode lastNode = (RadTreeNode)null;
if (node == null)
{
return;
}
Image image = node.Image;
for (; node != null; node = node.Parent)
{
RadSplitButtonElement ddButton = new RadSplitButtonElement();
ddButton.Text = node.Text;
ddButton.TextImageRelation = TextImageRelation.ImageBeforeText;
if (node.Nodes.Count == 0)
{
ddButton.ShowArrow = false;
}
this.SetDropDownItems(node, lastNode, ddButton);
if (this.SelectTreeNodeOnClick)
{
RadBreadCrumb.AssociatedMenuItem associatedMenuItem = new RadBreadCrumb.AssociatedMenuItem(node);
associatedMenuItem.Click += new EventHandler(this.item_Click);
associatedMenuItem.Visibility = ElementVisibility.Collapsed;
ddButton.Items.Add((RadItem)associatedMenuItem);
ddButton.DefaultItem = (RadItem)associatedMenuItem;
}
ddButton.Text = node.Text;
stack.Push(ddButton);
lastNode = node;
}
this.AddBreadCrumbsChildren(stack, image);
}
