private void ValidateButtons()
{
int i = listBox1.SelectedIndex;
int count = listBox1.Items.Count;
if (i < 0 || i >= count)
{
buttonDown.Enabled = false;
buttonLeft.Enabled = false;
buttonRight.Enabled = false;
buttonUp.Enabled = false;
}
else
{
LinkTreeItem li = listBox1.Items[i] as LinkTreeItem;
buttonUp.Enabled = (i > 0);
buttonDown.Enabled = (i < (count - 1));
if (li != null)
{
buttonLeft.Enabled = (li.Level > 0);
buttonRight.Enabled = true;
}
else
{
buttonRight.Enabled = false;
buttonLeft.Enabled = false;
}
}
}
private void DoOpen()
{
XmlDocument doc = new XmlDocument();
doc.Load(FileName);
XmlNode e = doc.ChildNodes[0];
foreach (XmlElement item in e.ChildNodes)
{
LinkTreeItem li = new LinkTreeItem();
if (item.HasAttribute("text"))
{
li.Text = item.GetAttribute("text");
}
if (item.HasAttribute("descr"))
{
li.Descr = item.GetAttribute("descr");
}
if (item.HasAttribute("target"))
{
li.Target = item.GetAttribute("target");
}
if (item.HasAttribute("level"))
{
int.TryParse(item.GetAttribute("level"), out li.Level);
}
Items.Add(li);
}
}
private void newItemToolStripMenuItem_Click(object sender, EventArgs e)
{
LinkTreeItem li = new LinkTreeItem();
li.Text = "<new>";
Document.Modified = true;
Document.Items.Add(li);
RefreshItems();
}
private void richTextBox1_TextChanged(object sender, EventArgs e)
{
LinkTreeItem li = SelectedItem;
if (li != null)
{
Document.Modified = true;
li.Descr = richTextBox1.Text;
}
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
LinkTreeItem li = SelectedItem;
if (li != null)
{
Document.Modified = true;
li.Target = textBox2.Text;
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
LinkTreeItem li = SelectedItem;
if (li != null)
{
li.Text = textBox1.Text;
Document.Modified = true;
RefreshItems();
}
}
private void buttonRight_Click(object sender, EventArgs e)
{
LinkTreeItem li = SelectedItem;
if (li != null)
{
li.Level++;
Document.Modified = true;
Document.ValidateLevels();
RefreshItems();
}
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
ValidateButtons();
LinkTreeItem li = SelectedItem;
if (li != null)
{
textBox1.Text = li.Text;
textBox2.Text = li.Target;
richTextBox1.Text = li.Descr;
}
}
private void insertAfterSelectionToolStripMenuItem_Click(object sender, EventArgs e)
{
int i = listBox1.SelectedIndex;
if (i >= 0)
{
LinkTreeItem li = new LinkTreeItem();
li.Text = "<new>";
Document.Modified = true;
Document.Items.Insert(i + 1, li);
RefreshItems();
}
}
private void buttonUp_Click(object sender, EventArgs e)
{
int i = listBox1.SelectedIndex;
if (i >= 0 && i > 0)
{
LinkTreeItem li = Document.Items[i] as LinkTreeItem;
Document.Items.RemoveAt(i);
Document.Items.Insert(i - 1, li);
Document.Modified = true;
listBox1.SelectedIndex = i - 1;
Document.ValidateLevels();
RefreshItems();
}
}
public void AddItem(LinkTreeItem li)
{
Modified = true;
Items.Add(li);
}