/// <summary>
/// Called when a cell is double-clicked in the datagrid. Raises an event to the main UI based on which item was clicked.
/// </summary>
/// <param name="sender">DataGrid that raised event</param>
/// <param name="e">Info about event</param>
private void cellClicked(object sender, RoutedEventArgs e)
{
//it has to be a row
DataGrid grid = (DataGrid)sender;
if (grid.SelectedCells.Count < 1)
{
return;
}
//get the name cell
dataEntry de = (dataEntry)(grid.SelectedCells[0].Item);
//get the name only
string nName = de.Name.Substring(3);
//call out to update the UI (using a raised notification)
try
{
//is it a folder?
FolderData fd = folderData.sfDict[nName];
try
{
GridClicked(this, new FolderDisplayEvent()
{
folderData = fd
});
}
catch (NullReferenceException)
{
//silently catch
}
}
catch (System.Collections.Generic.KeyNotFoundException) {
//it's a file, signal to show properties
try
{
//make sure that it's in there
FileInfo fi = folderData.fDict[nName];
GridClicked(this, new FolderDisplayEvent()
{
fileInfo = fi
});
}
catch (Exception)
{
//it's a folder that hasn't been loaded yet
}
}
}
/// <summary>
/// Constructor for FolderDisplay objects
/// </summary>
/// <param name="fd">FolderData object to display</param>
/// <param name="l">UI Level (0 is root, 1 is first subfolder level, etc)</param>
public FolderDisplay(FolderData fd, int l)
{
//setup grid
folderData = fd;
level = l;
//set maxlevel
if (level > maxLevel)
{
maxLevel = level;
}
//setup datagrid
dg = new DataGrid()
{
IsReadOnly = true, GridLinesVisibility = DataGridGridLinesVisibility.Vertical, VerticalGridLinesBrush = new SolidColorBrush(Color.FromArgb(255, 230, 230, 230)) /*AutoGenerateColumns = false*/
};
dg.DataContext = new Binding()
{
RelativeSource = RelativeSource.Self
};
//click handlers
dg.MouseDoubleClick += cellClicked;
dg.MouseLeftButtonUp += cellSingleClick;
dg.KeyUp += keyPressed;
updateTableListing();
/*//fix the width to prevent columns from being too wide
* foreach (DataGridColumn c in dg.Columns)
* {
* if (c.ActualWidth > maxWidth)
* {
* c.MaxWidth = maxWidth;
* }
* }*/
/* //Name column
* DataGridTextColumn header = new DataGridTextColumn() { Header = "Name" };
* header.Binding = new Binding("Name");
* dg.Columns.Add(header);
*
* //percentage column
* DataGridTemplateColumn percentage = new DataGridTemplateColumn() { Header="Percentage"};
* //percentage.CellTemplate = Application.Current.Resources["ProgressTemplate"] as DataTemplate;
* dg.Columns.Add(percentage);
*
* //Size column
* DataGridTextColumn size = new DataGridTextColumn() { Header = "Size" };
* header.Binding = new Binding("Size");
* dg.Columns.Add(size);*/
}
/// <summary>
/// Sizes the folder tree with the given root folder on a background thread
/// </summary>
/// <param name="path">String representing the fully qualified path to the root folder</param>
private void sizeFolder(string path)
{
FolderData fd = new FolderData(path, true);
displayList = new List <FolderDisplay>();
bgWorker = new System.Threading.Thread(() => fd.size(UpdateUIOnCallback));
sidebarPath = path;
revealButton.IsEnabled = true;
RevealToolbar.IsEnabled = true;
copyPath.IsEnabled = true;
bgWorker.Start();
//hide instructions label
ContentGrid.Children.Remove(LInstructions);
}
/// <summary>
/// Called when a row in the grid is single clicked (for updating the sidebar)
/// </summary>
/// <param name="sender">FolderDisplay object that raised the event</param>
/// <param name="e">Event arguments for the event</param>
protected void onSingleClick(object sender, EventArgs e)
{
FolderDisplayEvent fde = (FolderDisplayEvent)e;
//update the sidebarPath (folder or file?)
if (fde.fileInfo != null)
{
sidebarPath = fde.fileInfo.FullName;
}
else
{
sidebarPath = fde.folderData.path.FullName;
sidebarFolder = fde.folderData;
}
//redraw the sidebar
updateSidebar();
}
/// <summary>
/// Determines if a folder is in this folder, including subfolders
/// </summary>
/// <param name="path">Fully qualified path to search for</param>
/// <returns>the FolderData object, or null if it does not exist</returns>
public FolderData find(string path)
{
FolderData root = this;
string[] components = path.Split(Path.DirectorySeparatorChar);
for (int i = 1; i < components.Length; i++)
{
string component = components[i];
try
{
root = root.sfDict[component];
}
catch (Exception)
{
return(null);
}
}
return(root);
}
/// <summary>
/// Recursively determines the total size of the folder, including subfolders
/// </summary>
/// <param name="callback">Bool returning function that takes a double 0-1. Pass this if you want progress updates (i.e. doing the size asyncronously)</param>
public void size(Func <FolderData, double, bool> callback = null)
{
sfDict = new Dictionary <string, FolderData>();
subFolders = new List <FolderData>();
if (sfdi == null)
{
return;
}
total_size = 0;
files_size = 0;
num_items = 0;
size_files();
//build the list of subfolders by sizing each one
double prog = 0;
foreach (DirectoryInfo d in sfdi)
{
FolderData t = new FolderData(d.FullName);
t.size();
total_size += t.total_size;
num_items += t.num_items;
subFolders.Add(t);
sfDict.Add(t.path.Name, t);
//call the callback
if (callback != null)
{
prog++;
callback(this, prog / sfdi.Count());
}
}
//if the target folder has no subfolders
if (prog == 0 && callback != null)
{
callback(this, 1);
}
}
/// <summary>
/// Updates the UI on progress updates from the background thread
/// </summary>
/// <param name="fd">The FolderData object passed on the callback</param>
/// <param name="prog">Double from 0-1 representing the current progress</param>
/// <returns>true</returns>
private bool UpdateUIOnCallback(FolderData fd, double prog)
{ //if first update show UI
if (fd.subFolders.Count() == 1)
{
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
FolderDisplay fd1 = new FolderDisplay(fd, 0);
addToTable(fd1);
//sign up the object's click event
fd1.GridClicked += OnGridClicked;
fd1.GridSingleClick += onSingleClick;
fd1.GridKeys += onGridKey;
});
}
//update progress bar
System.Windows.Application.Current.Dispatcher.Invoke((Action) delegate
{
MainProg.Value = prog;
StatusL.Content = "Sizing " + fd.ToString() + " (" + Math.Round(prog * 100) + "%)";
//loop through displaylist to get the correct folderdisplays
FolderData root = fd;
//if displaylist is empty (e.g. no subfolders), create one
if (displayList.Count == 0)
{
FolderDisplay fdisp = new FolderDisplay(root, 0);
fdisp.GridClicked += OnGridClicked;
fdisp.GridSingleClick += onSingleClick;
fdisp.GridKeys += onGridKey;
displayList.Add(fdisp);
}
displayList[0].folderData = root;
displayList[0].updateTableListing();
for (int i = 1; i < displayList.Count(); i++)
{
//get the current one
FolderData fdt = displayList[i].folderData;
//find the correspondant in root
FolderData updated = root.sfDict[fdt.path.Name];
//update the list
displayList[i].folderData = updated;
displayList[i].updateTableListing();
//update root
root = updated;
}
//update the UI
ContentGrid.Children.Clear();
ContentGrid.ColumnDefinitions.Clear();
foreach (FolderDisplay fdisp in displayList)
{
addToTable(fdisp, false);
}
if (prog == 1)
{
ChooseFolderBtn.IsEnabled = true;
ResizeFolder.IsEnabled = true;
StopBtn.IsEnabled = false;
sidebarFolder = fd;
updateSidebar();
}
});
return(true);
}
