/// <summary>
/// Constructor to initialize and display the form
/// </summary>
/// <param name="consumer">DSRef Consumer with selection to display</param>
public DSRefNavigatorVisualizer(IDSRefConsumer consumer)
{
// Add the tree to the form
Text = "DSRef Consumer Selection Debug Display";
TreeView tree = new TreeView();
tree.Dock = DockStyle.Fill;
Controls.Add(tree);
tree.BeginUpdate();
// Create the root node and build the tree
TreeNode root = new TreeNode();
BuildTree(consumer, DSRefNavigator.RootNode, root);
// Display the debuging form
tree.Nodes.Add(root);
tree.ExpandAll();
tree.EndUpdate();
}
/// <summary>
/// Constructor to create the DSRef navigator from a stream
/// </summary>
/// <param name="data">Stream containing the DSRef consumer</param>
public DSRefNavigator(Stream data)
{
_consumer = null;
// Pointers to unmanaged resources
IntPtr ptr = IntPtr.Zero;
IntPtr stream = IntPtr.Zero;
IntPtr native = IntPtr.Zero;
// Get a reference to the DSRef Consumer from the stream
try
{
// Read the stream containing the DSRef Consumer
byte[] buffer = new byte[data.Length];
data.Seek(0, SeekOrigin.Begin);
data.Read(buffer, 0, buffer.Length);
// Copy the DSRef Consumer to native memory
native = Marshal.AllocHGlobal(buffer.Length);
Marshal.Copy(buffer, 0, native, buffer.Length);
// Create a COM stream from the memory
int result = CreateStreamOnHGlobal(native, false, ref stream);
Marshal.ThrowExceptionForHR(result);
// Load the DSRef Consumer from the COM stream
result = OleLoadFromStream(stream,
typeof (IDSRefConsumer).GUID.ToByteArray(), ref ptr);
Marshal.ThrowExceptionForHR(result);
// Get the DSRef consumer
_consumer = Marshal.GetObjectForIUnknown(ptr) as IDSRefConsumer;
}
finally
{
// Release all of the unmanaged resources
Marshal.Release(ptr);
Marshal.Release(stream);
Marshal.Release(native);
}
}
/// <summary>
/// Constructor to create the DSRef navigator from a stream
/// </summary>
/// <param name="data">Stream containing the DSRef consumer</param>
public DSRefNavigator(Stream data)
{
_consumer = null;
// Pointers to unmanaged resources
IntPtr ptr = IntPtr.Zero;
IntPtr stream = IntPtr.Zero;
IntPtr native = IntPtr.Zero;
// Get a reference to the DSRef Consumer from the stream
try
{
// Read the stream containing the DSRef Consumer
byte[] buffer = new byte[data.Length];
data.Seek(0, SeekOrigin.Begin);
data.Read(buffer, 0, buffer.Length);
// Copy the DSRef Consumer to native memory
native = Marshal.AllocHGlobal(buffer.Length);
Marshal.Copy(buffer, 0, native, buffer.Length);
// Create a COM stream from the memory
int result = CreateStreamOnHGlobal(native, false, ref stream);
Marshal.ThrowExceptionForHR(result);
// Load the DSRef Consumer from the COM stream
result = OleLoadFromStream(stream,
typeof(IDSRefConsumer).GUID.ToByteArray(), ref ptr);
Marshal.ThrowExceptionForHR(result);
// Get the DSRef consumer
_consumer = Marshal.GetObjectForIUnknown(ptr) as IDSRefConsumer;
}
finally
{
// Release all of the unmanaged resources
Marshal.Release(ptr);
Marshal.Release(stream);
Marshal.Release(native);
}
}
/// <summary>
/// Build a tree of the DSRef Consumer's selection starting with the provided
/// node in the DSRef Consumer and node in the TreeView
/// </summary>
/// <param name="consumer">DSRef Consumer containing the selection</param>
/// <param name="node">Current node in the DSRef Consumer</param>
/// <param name="treeNode">Node in the tree</param>
private void BuildTree(IDSRefConsumer consumer, IntPtr node,
System.Windows.Forms.TreeNode treeNode)
{
// Copy the properties for the current node given its type
treeNode.Text = "";
__DSREFTYPE type = consumer.GetType(node);
if ((type & __DSREFTYPE.DSREFTYPE_HASNAME) ==
__DSREFTYPE.DSREFTYPE_HASNAME)
{
treeNode.Text = string.Format("{0} ", consumer.GetName(node));
}
treeNode.Text += string.Format("(Type: {0}", GetNodeTypes(type));
string structure = GetNodeStructure(type);
if (!string.IsNullOrEmpty(structure))
{
treeNode.Text += string.Format(" || Structure: {0}", structure);
}
if ((type & __DSREFTYPE.DSREFTYPE_HASOWNER) ==
__DSREFTYPE.DSREFTYPE_HASOWNER)
{
treeNode.Text += string.Format(" || Owner: {0}", consumer.GetOwner(node));
}
treeNode.Text += ")";
// Iterate over the children
IntPtr child = consumer.GetFirstChildNode(node);
while (child != IntPtr.Zero)
{
// Create a tree node for the child and set its properties
TreeNode next = new TreeNode();
treeNode.Nodes.Add(next);
BuildTree(consumer, child, next);
// Move to the next child
child = consumer.GetNextSiblingNode(child);
}
}
