private IFolderItemViewModel InitializeView(IPathModel newPath)
{
string pathroot = string.Empty;
IFolderItemViewModel selectedItem = null;
string[] dirs;
if (newPath == null)
{
if (string.IsNullOrEmpty(CurrentFolder) == false)
{
return(null); // No parameter available at this time ...
}
else
{
try
{
newPath = PathFactory.Create(CurrentFolder);
}
catch { }
}
}
pathroot = newPath.PathRoot;
dirs = PathFactory.GetDirectories(newPath.Path);
// add drives
foreach (string s in Directory.GetLogicalDrives())
{
IFolderItemViewModel info = FolderControlsLib.Factory.CreateLogicalDrive(s);
CurrentItemsAdd(info);
// add items under current folder if we currently create the root folder of the current path
if (string.Compare(pathroot, s, true) == 0)
{
for (int i = 1; i < dirs.Length; i++)
{
try
{
string curdir = PathFactory.Join(dirs, 0, i + 1);
var curPath = PathFactory.Create(curdir);
var info2 = new FolderItemViewModel(curPath, dirs[i]);
CurrentItemsAdd(info2);
}
catch // Non-existing/unknown items will throw an exception here...
{
}
}
selectedItem = _CurrentItems.Last();
}
}
return(selectedItem);
}
/// <summary>
/// Can be invoked to refresh the currently visible set of data.
/// </summary>
public FinalBrowseResult PopulateView(BrowseRequest request)
{
IPathModel newPath = request.NewLocation;
// Make sure the task always processes the last input but is not started twice
_SlowStuffSemaphore.WaitAsync();
try
{
if (request.CancelTok != null)
{
request.CancelTok.ThrowIfCancellationRequested();
}
// Initialize view with current path
if (_CurrentItems.Count() == 0)
{
CurrentItemsClear();
SelectedItem = InitializeView(newPath);
}
else
{
var match = _CurrentItems.TryGet(newPath.Path);
if (match != null)
{
SelectedItem = match;
}
else
{
var folderItem = new FolderItemViewModel(newPath, newPath.Name);
SelectedItem = CurrentItemsAdd(folderItem);
}
}
// Force a selection on to the control when there is no selected item, yet
// Select last item in the list (hoping this is what we want...)
if (_CurrentItems.Count > 0 && SelectedItem == null)
{
SelectedItem = _CurrentItems.Last();
}
return(FinalBrowseResult.FromRequest(request, BrowseResult.Complete));
}
catch (Exception exp)
{
//// Console.WriteLine("{0} -> {1}", exp.Message, exp.StackTrace);
var result = FinalBrowseResult.FromRequest(request, BrowseResult.InComplete);
result.UnexpectedError = exp;
return(result);
}
finally
{
_SlowStuffSemaphore.Release();
}
}
/// <summary>
/// Can be invoked to refresh the currently visible set of data.
/// </summary>
public bool PopulateView(IPathModel newPath)
{
lock (this._LockObject)
{
try
{
CurrentItemClear();
// add drives
string pathroot = string.Empty;
if (newPath == null)
{
if (string.IsNullOrEmpty(this.CurrentFolder) == false)
{
try
{
pathroot = System.IO.Path.GetPathRoot(CurrentFolder);
}
catch
{
pathroot = string.Empty;
}
}
}
else
{
pathroot = System.IO.Path.GetPathRoot(newPath.Path);
}
foreach (string s in Directory.GetLogicalDrives())
{
IFolderItemViewModel info = FolderControlsLib.Factory.CreateLogicalDrive(s);
CurrentItemAdd(info);
// add items under current folder if we currently create the root folder of the current path
if (string.IsNullOrEmpty(pathroot) == false && string.Compare(pathroot, s, true) == 0)
{
string[] dirs;
if (newPath == null)
{
dirs = PathFactory.GetDirectories(CurrentFolder);
}
else
{
dirs = PathFactory.GetDirectories(newPath.Path);
}
for (int i = 1; i < dirs.Length; i++)
{
try
{
string curdir = PathFactory.Join(dirs, 0, i + 1);
var curPath = PathFactory.Create(curdir);
info = new FolderItemViewModel(curPath, dirs[i], false);
CurrentItemAdd(info);
}
catch // Non-existing/unknown items will thrown an exception here...
{
}
}
SelectedItem = _CurrentItems.Last();
}
}
// Force a selection on to the control when there is no selected item, yet
if (this._CurrentItems != null && SelectedItem == null)
{
if (this._CurrentItems.Count > 0)
{
this.SelectedItem = this._CurrentItems.Last();
}
}
return(true);
}
catch (Exception exp)
{
Console.WriteLine("{0} -> {1}", exp.Message, exp.StackTrace);
return(false);
}
}
}
