/// <summary>
/// Removes the specified nodes from the tree view.
/// </summary>
/// <remarks>
/// The user is asked to confirm the removal.
/// </remarks>
/// <param name="p_lstNodes">The nodes to remove.</param>
public void RemoveNodes(IList <TreeNode> p_lstNodes)
{
//make a copy in case removing nodes changes the given p_lstNodes
List <TreeNode> lstNodesToRemove = new List <TreeNode>(p_lstNodes);
if (lstNodesToRemove.IsNullOrEmpty())
{
return;
}
string strMessage = null;
if (lstNodesToRemove.Count == 1)
{
strMessage = String.Format("Are you sure you want to removed '{0}?'", lstNodesToRemove[0].Text);
}
else
{
strMessage = String.Format("Are you sure you want to removed the {0} selected nodes?", lstNodesToRemove.Count);
}
if (MessageBox.Show(this.FindForm(), strMessage, "Confirm Delete", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
{
FileSystemTreeNode tndNode = null;
for (Int32 i = lstNodesToRemove.Count - 1; i >= 0; i--)
{
tndNode = (FileSystemTreeNode)lstNodesToRemove[i];
tndNode.Remove();
OnNodeRemoved(new NodesChangedEventArgs(tndNode));
}
}
}
/// <summary>
/// Adds a virtual file system item to the tree view.
/// </summary>
/// <param name="p_tndRoot">The node to which to add the new item.</param>
/// <param name="p_strName">The name of the new virtual item to add.</param>
/// <returns>The new tree node representing the new virtual file system item.</returns>
public FileSystemTreeNode AddVirtualNode(FileSystemTreeNode p_tndRoot, string p_strName)
{
if ((p_tndRoot != null) && !p_tndRoot.IsDirectory)
{
return(AddVirtualNode(p_tndRoot.Parent, p_strName));
}
FileSystemTreeNode tndFile = null;
System.Windows.Forms.TreeNodeCollection tncSiblings = (p_tndRoot == null) ? this.Nodes : p_tndRoot.Nodes;
if (!tncSiblings.ContainsKey(p_strName))
{
tndFile = (FileSystemTreeNode)tncSiblings[p_strName];
}
else
{
string strName = Path.GetFileName(p_strName);
if (String.IsNullOrEmpty(strName))
{
strName = p_strName;
}
tndFile = new FileSystemTreeNode(strName, null);
tndFile.Name = p_strName;
tncSiblings.Add(tndFile);
OnNodeAdded(new NodesChangedEventArgs(tndFile));
}
return(tndFile);
}
/// <summary>
/// Addes the specified virtual path to the source tree.
/// </summary>
/// <param name="p_tndRoot">The node to which to add the path.</param>
/// <param name="p_vfiPath">The path to add to the source tree.</param>
public void AddVirtualPath(FileSystemTreeNode p_tndRoot, VirtualFileSystemItem p_vfiPath)
{
Cursor crsOldCursor = Cursor;
Cursor = Cursors.WaitCursor;
Queue <string> queRemainingPath = null;
FileSystemTreeNode tndNode = FindNearestAncestor(p_tndRoot, p_vfiPath.Path, out queRemainingPath);
string strCurrentPath = null;
while (queRemainingPath.Count > 0)
{
strCurrentPath = queRemainingPath.Dequeue();
if ((queRemainingPath.Count > 0) || p_vfiPath.IsDirectory)
{
FileSystemTreeNode tndChild = new FileSystemTreeNode(strCurrentPath, null);
((tndNode == null) ? Nodes : tndNode.Nodes).Add(tndChild);
OnNodeAdded(new NodesChangedEventArgs(tndChild));
tndNode = tndChild;
}
else
{
tndNode = AddPath(tndNode, p_vfiPath.Source);
}
}
tndNode.AddSource(p_vfiPath.Source, true);
Cursor = crsOldCursor;
}
/// <summary>
/// Raises the <see cref="Control.DragEnter"/>.
/// </summary>
/// <remarks>
/// This determines if the item being dragged can be dropped at the current location.
/// </remarks>
/// <param name="e">A <see cref="DragEventArgs"/> that describes the event arguments.</param>
protected override void OnDragOver(DragEventArgs e)
{
base.OnDragOver(e);
e.Effect = DragDropEffects.None;
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
string[] strFileNames = (string[])e.Data.GetData(DataFormats.FileDrop);
foreach (string strFile in strFileNames)
{
if ((Directory.Exists(strFile) || (File.Exists(strFile) && !".lnk".Equals(Path.GetExtension(strFile).ToLowerInvariant()))))
{
e.Effect = DragDropEffects.Copy;
break;
}
}
}
else if (e.Data.GetDataPresent(typeof(List <FileSystemTreeNode>)))
{
e.Effect = DragDropEffects.Move;
}
if (e.Effect != DragDropEffects.None)
{
FileSystemTreeNode tndFolder = (FileSystemTreeNode)GetNodeAt(PointToClient(new Point(e.X, e.Y)));
if ((tndFolder != null) && !tndFolder.IsDirectory)
{
tndFolder = tndFolder.Parent;
}
SelectedNode = tndFolder;
}
}
/// <summary>
/// Handles the <see cref="Control.Click"/> event of the new folder button.
/// </summary>
/// <param name="sender">The object that raised the event.</param>
/// <param name="e">An <see cref="EventArgs"/> describing the event properties.</param>
private void butNewFolder_Click(object sender, EventArgs e)
{
FileSystemTreeNode tndRoot = (FileSystemTreeNode)ftvFileSystem.SelectedNode;
if (tndRoot == null)
{
tndRoot = (FileSystemTreeNode)ftvFileSystem.Nodes[0];
}
string strNewFolderName = Path.Combine(tndRoot.LastSource, "New Folder");
for (Int32 i = 0; i < Int32.MaxValue && Directory.Exists(strNewFolderName); i++)
{
strNewFolderName = Path.Combine(tndRoot.LastSource, "New Folder " + i);
}
Directory.CreateDirectory(strNewFolderName);
FileSystemTreeNode tndNewNode = ftvFileSystem.AddPath(tndRoot, strNewFolderName);
if (tndRoot != null)
{
tndRoot.Expand();
}
//make sure the node being edited is the only one selected
ftvFileSystem.SelectedNode = tndNewNode;
tndNewNode.BeginEdit();
}
/// <summary>
/// Sets the image of the given node.
/// </summary>
/// <param name="p_fsnItem">The node whose image shuld be set.</param>
protected virtual void SetNodeImage(FileSystemTreeNode p_fsnItem)
{
if (p_fsnItem.IsDirectory)
{
p_fsnItem.ImageKey = "folder";
p_fsnItem.SelectedImageKey = "folder";
}
else
{
string strExtension = Path.GetExtension(p_fsnItem.LastSource).ToLowerInvariant();
if (!ImageList.Images.ContainsKey(strExtension))
{
//this method should work, and it should be faster; however, it seems to
// always return the generic file icon - no idea why
/*if (!Archive.IsArchivePath(p_fsnItem.LastSource))
* ImageList.Images.Add(strExtension, System.Drawing.Icon.ExtractAssociatedIcon(p_fsnItem.LastSource));
* else*/
{
string strIconPath = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName()) + strExtension;
File.CreateText(strIconPath).Close();
ImageList.Images.Add(strExtension, System.Drawing.Icon.ExtractAssociatedIcon(strIconPath));
File.Delete(strIconPath);
}
}
p_fsnItem.ImageKey = strExtension;
p_fsnItem.SelectedImageKey = strExtension;
}
}
/// <summary>
/// Finds the specified node, or the specified node's nearest ancestor if the specified
/// node does not exist.
/// </summary>
/// <param name="p_tndRoot">The node under which to search for the specified node.</param>
/// <param name="p_strPath">The path to the node to be found.</param>
/// <param name="p_queMissingPath">An out parameter that returns the path parts that were not found.</param>
/// <returns>The specified node, it if exists. If it does not exist, then the specified node's
/// neasrest ancestor. If no ancestor exists, then <c>null</c> is returned.</returns>
protected FileSystemTreeNode FindNearestAncestor(FileSystemTreeNode p_tndRoot, string p_strPath, out Queue <string> p_queMissingPath)
{
string[] strPaths = p_strPath.Split(new char[] { Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar }, StringSplitOptions.RemoveEmptyEntries);
if (strPaths[0].EndsWith(Path.VolumeSeparatorChar.ToString(), StringComparison.OrdinalIgnoreCase))
{
strPaths[0] = strPaths[0] + Path.DirectorySeparatorChar;
}
Queue <string> quePath = new Queue <string>(strPaths);
FileSystemTreeNode tndSelectedNode = null;
System.Windows.Forms.TreeNodeCollection tncCurrentLevel = (p_tndRoot == null) ? Nodes : p_tndRoot.Nodes;
string strCurrentPath = null;
while (quePath.Count > 0)
{
strCurrentPath = quePath.Peek();
foreach (FileSystemTreeNode tndCurrent in tncCurrentLevel)
{
if (tndCurrent.Text.Equals(strCurrentPath, StringComparison.OrdinalIgnoreCase))
{
tndSelectedNode = tndCurrent;
break;
}
}
if ((tndSelectedNode == null) || (tncCurrentLevel == tndSelectedNode.Nodes))
{
break;
}
tncCurrentLevel = tndSelectedNode.Nodes;
quePath.Dequeue();
}
p_queMissingPath = quePath;
return(tndSelectedNode);
}
/// <summary>
/// Addes the specified virtual paths to the source tree.
/// </summary>
/// <param name="p_tndRoot">The node to which to add the paths.</param>
/// <param name="p_vfiPaths">The paths to add to the source tree.</param>
public void AddVirtualPaths(FileSystemTreeNode p_tndRoot, VirtualFileSystemItem[] p_vfiPaths)
{
Cursor crsOldCursor = Cursor;
Cursor = Cursors.WaitCursor;
foreach (VirtualFileSystemItem vfiPath in p_vfiPaths)
{
AddVirtualPath(p_tndRoot, vfiPath);
}
Cursor = crsOldCursor;
}
/// <summary>
/// Addes the specified files to the source tree.
/// </summary>
/// <param name="p_tndRoot">The node to which to add the file/folder.</param>
/// <param name="p_strFileNames">The paths to add to the source tree.</param>
public void AddPaths(FileSystemTreeNode p_tndRoot, string[] p_strFileNames)
{
Cursor crsOldCursor = Cursor;
Cursor = Cursors.WaitCursor;
foreach (string strFile in p_strFileNames)
{
AddPath(p_tndRoot, strFile);
}
Cursor = crsOldCursor;
}
/// <summary>
/// Sets the image of the given node.
/// </summary>
/// <param name="p_fsnItem">The node whose image shuld be set.</param>
protected override void SetNodeImage(FileSystemTreeNode p_fsnItem)
{
if (p_fsnItem.IsDrive)
{
p_fsnItem.ImageKey = "drive";
p_fsnItem.SelectedImageKey = "drive";
}
else
{
base.SetNodeImage(p_fsnItem);
}
}
/// <summary>
/// Raises the <see cref="Control.DragDrop"/>.
/// </summary>
/// <remarks>
/// This handles adding the dropped file/folder to the source tree.
/// </remarks>
/// <param name="e">A <see cref="DragEventArgs"/> that describes the event arguments.</param>
protected override void OnDragDrop(DragEventArgs e)
{
base.OnDragDrop(e);
Cursor crsOldCursor = Cursor;
Cursor = Cursors.WaitCursor;
BeginUpdate();
FileSystemTreeNode tndFolder = (FileSystemTreeNode)GetNodeAt(PointToClient(new Point(e.X, e.Y)));
if ((tndFolder != null) && !tndFolder.IsDirectory)
{
tndFolder = tndFolder.Parent;
}
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
string[] strFileNames = (string[])e.Data.GetData(DataFormats.FileDrop);
if (strFileNames != null)
{
if (tndFolder != null)
{
AddPaths(tndFolder, strFileNames);
tndFolder.Expand();
}
else
{
AddPaths(null, strFileNames);
}
}
}
else if (e.Data.GetDataPresent(typeof(List <FileSystemTreeNode>)))
{
List <FileSystemTreeNode> lstNodes = ((List <FileSystemTreeNode>)e.Data.GetData(typeof(List <FileSystemTreeNode>)));
System.Windows.Forms.TreeNodeCollection tncSiblings = null;
if (tndFolder == null)
{
tncSiblings = Nodes;
}
else
{
tncSiblings = tndFolder.Nodes;
tndFolder.Expand();
}
for (Int32 i = 0; i < lstNodes.Count; i++)
{
lstNodes[i].Remove();
tncSiblings.Add(lstNodes[i]);
}
}
EndUpdate();
Cursor = crsOldCursor;
}
/// <summary>
/// Loads the grand children of the given node.
/// </summary>
/// <param name="p_tndFolder">The node whose grand children are to be loaded.</param>
protected void LoadGrandChildren(FileSystemTreeNode p_tndFolder)
{
Cursor crsOldCursor = Cursor;
Cursor = Cursors.WaitCursor;
try
{
foreach (FileSystemTreeNode tndFolder in p_tndFolder.Nodes)
{
LoadChildren(tndFolder);
}
}
finally
{
Cursor = crsOldCursor;
}
}
/// <summary>
/// Determines if the children of the given node should be loaded.
/// </summary>
/// <param name="p_fsnItem">The node for which it is to be determined if the children should be loaded.</param>
/// <returns><c>true</c> if teh children should be loaded;
/// <c>false</c> otherwise.</returns>
protected override bool ShouldLoadChildren(FileSystemTreeNode p_fsnItem)
{
return((p_fsnItem.Parent == null) || (p_fsnItem.Parent.IsExpanded));
}
/// <summary>
/// A simple constructor that initializes the object with the given values.
/// </summary>
/// <param name="p_tndNode">The node that has changed.</param>
public NodesChangedEventArgs(FileSystemTreeNode p_tndNode)
{
ChangedNode = p_tndNode;
}
/// <summary>
/// Loads the children of the given node.
/// </summary>
/// <param name="p_tndFolder">The node whose children are to be loaded.</param>
protected void LoadChildren(FileSystemTreeNode p_tndFolder)
{
if (p_tndFolder.LastSource.IsLoaded || !p_tndFolder.IsDirectory && (!BrowseIntoArchives || !p_tndFolder.IsArchive))
{
return;
}
Cursor crsOldCursor = Cursor;
Cursor = Cursors.WaitCursor;
try
{
p_tndFolder.LastSource.IsLoaded = true;
string strPath = p_tndFolder.LastSource;
if (BrowseIntoArchives && (Archive.IsArchivePath(strPath) || p_tndFolder.IsArchive))
{
KeyValuePair <string, string> kvpPath = new KeyValuePair <string, string>(p_tndFolder.LastSource, Path.DirectorySeparatorChar.ToString());
if (Archive.IsArchivePath(strPath))
{
kvpPath = Archive.ParseArchivePath(strPath);
}
Archive arcArchive = new Archive(kvpPath.Key);
string[] strFolders = arcArchive.GetDirectories(kvpPath.Value);
for (Int32 i = 0; i < strFolders.Length; i++)
{
AddPath(p_tndFolder, Archive.GenerateArchivePath(kvpPath.Key, strFolders[i]));
}
if (ShowFiles)
{
string[] strFiles = arcArchive.GetFiles(kvpPath.Value, false);
for (Int32 i = 0; i < strFiles.Length; i++)
{
AddPath(p_tndFolder, Archive.GenerateArchivePath(kvpPath.Key, strFiles[i]));
}
}
}
else
{
try
{
string[] strFolders = Directory.GetDirectories(strPath);
for (Int32 i = 0; i < strFolders.Length; i++)
{
AddPath(p_tndFolder, strFolders[i]);
}
if (ShowFiles)
{
string[] strFiles = Directory.GetFiles(strPath);
for (Int32 i = 0; i < strFiles.Length; i++)
{
AddPath(p_tndFolder, strFiles[i]);
}
}
}
catch (UnauthorizedAccessException)
{
}
}
}
finally
{
Cursor = crsOldCursor;
}
}
/// <summary>
/// Determines if the children of the given node should be loaded.
/// </summary>
/// <param name="p_fsnItem">The node for which it is to be determined if the children should be loaded.</param>
/// <returns><c>true</c> if teh children should be loaded;
/// <c>false</c> otherwise.</returns>
protected virtual bool ShouldLoadChildren(FileSystemTreeNode p_fsnItem)
{
return(true);
}
/// <summary>
/// This adds a file/folder to the source file structure.
/// </summary>
/// <param name="p_tndRoot">The node to which to add the file/folder.</param>
/// <param name="p_strFile">The path to add to the source file structure.</param>
public FileSystemTreeNode AddPath(FileSystemTreeNode p_tndRoot, string p_strFile)
{
if ((p_tndRoot != null) && !p_tndRoot.IsDirectory && (!BrowseIntoArchives || !p_tndRoot.IsArchive))
{
return(AddPath(p_tndRoot.Parent, p_strFile));
}
Cursor crsOldCursor = Cursor;
Cursor = Cursors.WaitCursor;
try
{
if (!Archive.IsArchivePath(p_strFile))
{
FileSystemInfo fsiInfo = null;
if (Directory.Exists(p_strFile))
{
fsiInfo = new DirectoryInfo(p_strFile);
}
else if (ShowFiles && File.Exists(p_strFile) && !".lnk".Equals(Path.GetExtension(p_strFile), StringComparison.OrdinalIgnoreCase))
{
fsiInfo = new FileInfo(p_strFile);
}
else
{
return(null);
}
if (!FileUtil.IsDrivePath(p_strFile) && ((fsiInfo.Attributes & FileAttributes.System) > 0))
{
return(null);
}
}
FileSystemTreeNode tndFile = null;
System.Windows.Forms.TreeNodeCollection tncSiblings = (p_tndRoot == null) ? this.Nodes : p_tndRoot.Nodes;
string strName = Path.GetFileName(p_strFile);
if (String.IsNullOrEmpty(strName))
{
strName = p_strFile;
}
if (tncSiblings.ContainsKey(strName))
{
tndFile = (FileSystemTreeNode)tncSiblings[strName];
tndFile.AddSource(p_strFile, false);
}
else
{
tndFile = new FileSystemTreeNode(strName, p_strFile);
tndFile.Name = strName;
tncSiblings.Add(tndFile);
OnNodeAdded(new NodesChangedEventArgs(tndFile));
}
SetNodeImage(tndFile);
if (tndFile.IsDirectory)
{
if (ShouldLoadChildren(tndFile))
{
LoadChildren(tndFile);
}
}
else
{
if (BrowseIntoArchives && tndFile.IsArchive)
{
if (ShouldLoadChildren(tndFile))
{
LoadChildren(tndFile);
}
}
else
{
tndFile.Sources[p_strFile].IsLoaded = true;
}
}
return(tndFile);
}
finally
{
Cursor = crsOldCursor;
}
}
