/// <summary>
/// Initializes a new instance of the NodeCollectionDialog class.
/// </summary>
/// <param name="original">Original Nodes to be edited.</param>
public CommandCollectionDialog(CommandBaseCollection original)
{
// Required for Windows Form Designer support
InitializeComponent();
// Create a new per command
foreach (CommandBase command in original)
{
// Create a new tree node to hold the command
Node newNode = new Node();
// Create a copy to attach to the node
CommandBase copy = (CommandBase)command.Clone();
if (copy.GetType() == typeof(SeparatorCommand))
{
newNode.Text = "(Separator)";
}
else if (copy.GetType() == typeof(ButtonCommand))
{
ButtonCommand button = copy as ButtonCommand;
// Special case the absense of text
if (button.Text.Length == 0)
{
newNode.Text = "<Empty>";
}
else
{
newNode.Text = button.Text;
}
// We want to know when the text for the node changes
button.TextChanged += new EventHandler(OnTextChanged);
}
// Attached a copy of the command to the node
newNode.Tag = copy;
// Append to end of the list
treeControl1.Nodes.Add(newNode);
}
// Set correct initial state of the buttons
UpdateButtonState();
}
/// <summary>
/// Disposes of the resources (other than memory) used by the class.
/// </summary>
/// <param name="disposing">true to release both managed and unmanaged; false to release only unmanaged. </param>
protected override void Dispose(bool disposing)
{
if (disposing)
{
// Remove any event handlers
foreach (Node n in treeControl1.Nodes)
{
ButtonCommand button = n.Tag as ButtonCommand;
// Remove any handler from the command
if (button != null)
{
button.TextChanged -= new EventHandler(OnTextChanged);
}
}
}
base.Dispose(disposing);
}
private void buttonRemove_Click(object sender, System.EventArgs e)
{
// No longer this object selected
propertyGrid.SelectedObject = null;
ButtonCommand button = treeControl1.SelectedNode.Tag as ButtonCommand;
// Remove any handler from the command
if (button != null)
{
button.TextChanged -= new EventHandler(OnTextChanged);
}
// Remove the selected item
treeControl1.Nodes.Remove(treeControl1.SelectedNode);
// Put focus back to the tree control
treeControl1.Focus();
UpdateButtonState();
}
private void OnTextChanged(object sender, System.EventArgs e)
{
// Convert to correct class
ButtonCommand button = sender as ButtonCommand;
// Find the node the contains this command
foreach (Node n in treeControl1.Nodes)
{
if (n.Tag == button)
{
// Update node with the new text
if (button.Text.Length == 0)
{
n.Text = "<Empty>";
}
else
{
n.Text = button.Text;
}
break;
}
}
}
