/// <summary>
/// Converts source values to a value for the binding target. The data binding engine calls this method when it propagates the values from source bindings to the binding target.
/// </summary>
/// <param name="values">The array of values that the source bindings in the <see cref="T:System.Windows.Data.MultiBinding"/> produces. The value <see cref="F:System.Windows.DependencyProperty.UnsetValue"/> indicates that the source binding has no value to provide for conversion.</param>
/// <param name="targetType">The type of the binding target property.</param>
/// <param name="parameter">The converter parameter to use.</param>
/// <param name="culture">The culture to use in the converter.</param>
/// <returns>
/// A converted value.If the method returns null, the valid null value is used.A return value of <see cref="T:System.Windows.DependencyProperty"/>.<see cref="F:System.Windows.DependencyProperty.UnsetValue"/> indicates that the converter did not produce a value, and that the binding will use the <see cref="P:System.Windows.Data.BindingBase.FallbackValue"/> if it is available, or else will use the default value.A return value of <see cref="T:System.Windows.Data.Binding"/>.<see cref="F:System.Windows.Data.Binding.DoNothing"/> indicates that the binding does not transfer the value or use the <see cref="P:System.Windows.Data.BindingBase.FallbackValue"/> or the default value.
/// </returns>
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
if (values.Length != 2)
{
return(null);
}
IDirectoryController directoryController = (IDirectoryController)values[0];
var history = directoryController.History;
ObservableCollection <MenuItem> menuItems = new ObservableCollection <MenuItem>();
foreach (var item in history)
{
bool isDrive = (item.FileView.FullName.Length <= 3);
string dir = item.FileView.FullName;
bool isCurrent = item.IsCurrent;
TextBlock header = new TextBlock
{
Text = isDrive ? DriveTypeHelper.GetDescription(new DriveInfo(dir)) : Path.GetFileName(dir),
FontWeight = isCurrent ? FontWeights.Bold : FontWeights.Normal,
};
MenuItem subDirMenuItem = new MenuItem {
Header = header, Icon = new Image {
Source = new FileView(dir).ImageSource
}
};
int historyOffset = item.HistoryOffset;
subDirMenuItem.Click += delegate { directoryController.Navigate(historyOffset); };
menuItems.Add(subDirMenuItem);
}
return(menuItems);
}
private void _viewModel_EnhancedPropertyChanged(object sender, EnhancedPropertyChangedEventArgs <IDirectoryController> e)
{
if (e.IsProperty(p => p.CurrentDirectory))
{
string directory = _viewModel.CurrentDirectory;
if (Directory.Exists(directory))
{
ButtonGrid.Children.Clear();
ButtonGrid.ColumnDefinitions.Clear();
List <UIElement> buttons = new List <UIElement>();
string curdir = directory;
while (Directory.Exists(curdir))
{
if (curdir.EndsWith(@"\") && curdir.Length > 3)
{
curdir = curdir.Substring(0, curdir.Length - 1);
}
MenuItem menuItem;
Menu menu;
GetMenuItem(curdir, directory, out menuItem, out menu);
if (menu != null)
{
buttons.Add(menu);
}
Button dirButton = new Button();
dirButton.Content =
new TextBlock
{
Text = curdir.Length <= 3 ? DriveTypeHelper.GetDescription(new DriveInfo(curdir.Substring(0, 2))) : Path.GetFileName(curdir),
Margin = new Thickness(2, 0, 2, 0)
};
dirButton.VerticalAlignment = VerticalAlignment.Stretch;
dirButton.VerticalContentAlignment = VerticalAlignment.Center;
dirButton.Tag = curdir;
dirButton.Click += (s, be) => { _viewModel.CurrentDirectory = (string)((Button)s).Tag; };
dirButton.Style = (Style)Application.Current.Resources["DirectoryButton"];
buttons.Add(dirButton);
if (menuItem != null)
{
dirButton.MouseEnter += delegate
{
if (!menuItem.IsSubmenuOpen)
{
VisualStateManager.GoToState(menuItem, "MouseOver", true);
}
};
menuItem.MouseEnter += delegate
{
if (!menuItem.IsSubmenuOpen)
{
VisualStateManager.GoToState(dirButton, "MenuMouseOver", true);
VisualStateManager.GoToState(menuItem, "MouseOver", true);
}
};
dirButton.MouseLeave += delegate
{
if (!menuItem.IsMouseOver && !menuItem.IsSubmenuOpen)
{
VisualStateManager.GoToState(menuItem, "Normal", true);
}
};
menuItem.MouseLeave += delegate
{
if (!dirButton.IsMouseOver && !menuItem.IsSubmenuOpen)
{
VisualStateManager.GoToState(dirButton, "Normal", true);
VisualStateManager.GoToState(menuItem, "Normal", true);
}
};
menuItem.SubmenuOpened += delegate
{
VisualStateManager.GoToState(dirButton, "Pressed", true);
VisualStateManager.GoToState(menuItem, "Pressed", true);
};
menuItem.SubmenuClosed += delegate
{
if (!dirButton.IsMouseOver && !menuItem.IsMouseOver)
{
VisualStateManager.GoToState(dirButton, "Normal", true);
VisualStateManager.GoToState(menuItem, "Normal", true);
}
else
{
VisualStateManager.GoToState(dirButton, "MouseOver", true);
VisualStateManager.GoToState(menuItem, "MouseOver", true);
}
};
}
curdir = Path.GetDirectoryName(curdir);
}
MenuItem rootMenuItem;
Menu rootMenu;
GetMenuItem(curdir, directory, out rootMenuItem, out rootMenu);
rootMenuItem.MouseEnter += delegate
{
if (!rootMenuItem.IsSubmenuOpen)
{
VisualStateManager.GoToState(rootMenuItem, "MouseOver", true);
}
};
rootMenuItem.MouseLeave += delegate
{
if (!rootMenuItem.IsSubmenuOpen)
{
VisualStateManager.GoToState(rootMenuItem, "Normal", true);
}
};
rootMenuItem.SubmenuOpened += delegate
{
VisualStateManager.GoToState(rootMenuItem, "Pressed", true);
};
rootMenuItem.SubmenuClosed += delegate
{
if (!rootMenuItem.IsMouseOver)
{
VisualStateManager.GoToState(rootMenuItem, "Normal", true);
}
else
{
VisualStateManager.GoToState(rootMenuItem, "MouseOver", true);
}
};
buttons.Add(rootMenu);
FileView currentFileView = new FileView(directory);
buttons.Add(new Image {
Source = currentFileView.ImageSource, Margin = new Thickness(3, 3, 3, 3), VerticalAlignment = VerticalAlignment.Center
});
for (int i = buttons.Count - 1, j = 0; i >= 0; i--, j++)
{
ButtonGrid.ColumnDefinitions.Add(new ColumnDefinition {
Width = GridLength.Auto
});
buttons[i].SetValue(Grid.ColumnProperty, j);
ButtonGrid.Children.Add(buttons[i]);
}
}
}
}
private void GetMenuItem(string curdir, string directory, out MenuItem menuItem, out Menu menu)
{
// TODO: Put "Path" as resource
bool isDrive;
string[] subdirs;
if (curdir != null)
{
subdirs = Directory.GetDirectories(curdir);
isDrive = false;
}
else
{
subdirs = DriveInfo.GetDrives().Select(p => p.Name).ToArray();
isDrive = true;
}
if (subdirs.Length == 0)
{
menuItem = null;
menu = null;
return;
}
menuItem = new MenuItem();
menuItem.VerticalAlignment = VerticalAlignment.Stretch;
menuItem.VerticalContentAlignment = VerticalAlignment.Center;
menuItem.Style = (Style)Application.Current.Resources["DirectoryMenuItemStyle"];
menuItem.Icon = new System.Windows.Shapes.Path {
Data = (Geometry)Application.Current.Resources["RightArrow"], Height = 7, Width = 3.5, Fill = Brushes.Black, Margin = new Thickness(2, 0, 2, 0)
};
foreach (string dir in subdirs)
{
if (!isDrive)
{
if (new DirectoryInfo(dir).Attributes.HasFlag(FileAttributes.Hidden))
{
continue;
}
}
bool isCurrent = (directory == dir || directory.StartsWith(dir + "\\"));
TextBlock header = new TextBlock
{
Text = isDrive ? DriveTypeHelper.GetDescription(new DriveInfo(dir)) : Path.GetFileName(dir),
FontWeight = isCurrent ? FontWeights.Bold : FontWeights.Normal
};
MenuItem subDirMenuItem = new MenuItem {
Header = header, Icon = new Image {
Source = new FileView(dir).ImageSource
}, Tag = dir
};
subDirMenuItem.Click += delegate { ((IDirectoryController)DataContext).CurrentDirectory = (string)subDirMenuItem.Tag; };
menuItem.Items.Add(subDirMenuItem);
}
menu = new Menu();
menu.VerticalAlignment = VerticalAlignment.Stretch;
menu.VerticalContentAlignment = VerticalAlignment.Center;
menu.Style = (Style)Application.Current.Resources["MenuStyle"];
menu.Items.Add(menuItem);
}