private void OnRightKeyDown(DirectoryListingPane pane)
{
if (pane.SelectedItem is FileViewModel)
{
// If a file is selected in this pane, try to move down (which should change the deeper panes)
// and focus on the newly selected item
if (pane.SelectedIndex < pane.Items.Count - 1)
{
pane.SelectItemAndFocus(pane.SelectedIndex + 1);
}
}
else if (pane.SelectedItem is DirectoryViewModel)
{
// Go into the next pane, which is guaranteed to be open
// bc the selected file system item in this pane is itself a directory
var nextPane = (DirectoryListingPane)_panes[_panes.IndexOf(pane) + 1];
if (nextPane.Items.Count > 0)
{
nextPane.SelectItemAndFocus(0);
}
}
else if (pane.SelectedItem == null)
{
// If nothing is selected, then select the first item
pane.SelectItemAndFocus(0);
}
}
private bool OnDownKeyDown(DirectoryListingPane pane)
{
if (pane.SelectedItem == null)
{
// If nothing is selected, then select the first item
pane.SelectItemAndFocus(0);
return(true);
}
return(false);
}
private void OnLeftKeyDown(DirectoryListingPane pane)
{
if (_panes.IndexOf(pane) == 0)
{
// In the root directory pane, try to move up (which should close deeper panes if open)
// and focus on the newly selected item
// (Note: this is commented out because Finder doesn't do this)
// if (pane.SelectedIndex > 0)
// pane.SelectItemAndFocus(pane.SelectedIndex - 1);
}
else
{
// If it's not the root pane, deselect everything in this pane (which should close deeper panes)
// and focus on the selected item in the previous pane
pane.SelectItem(-1);
var previousPane = (DirectoryListingPane)_panes[_panes.IndexOf(pane) - 1];
previousPane.FocusSelectedItem();
}
}
private Tuple <int, IReadOnlyList <FileSystemItemViewModel> > GetLatestSelectedFiles(DirectoryListingPane directory)
{
return(Tuple.Create(_panes.IndexOf(directory), directory.SelectedItems.Cast <FileSystemItemViewModel>().ToReadOnlyList()));
}
private void PushPane(FileSystemItemViewModel item)
{
IFileSystemPane pane;
switch (item)
{
case DirectoryViewModel directory:
// Open directory listing pane
var directoryPane = new DirectoryListingPane(directory);
// Subscribe to events
directoryPane.MouseDoubleClick += DirectoryListingPane_MouseDoubleClick;
directoryPane.PreviewKeyDown += DirectoryListingPane_PreviewKeyDown;
directoryPane.KeyDown += DirectoryListingPane_KeyDown;
directoryPane.SelectionChanged += DirectoryListingPane_SelectionChanged;
pane = directoryPane;
// Add a breadcrumb
if (_panes.Count > 0)
{
StackPanelBreadcrumbs.Children.Add(new TextBlock {
Text = ">",
Height = 18,
VerticalAlignment = VerticalAlignment.Center,
Margin = new Thickness(4, 0, 4, 0)
});
}
var breadcrumbIcon = new Image {
Source = directory.Icon,
Width = 18, Height = 18, // Smaller than the icons in the title bar and directory listings
VerticalAlignment = VerticalAlignment.Center
};
StackPanelBreadcrumbs.Children.Add(breadcrumbIcon);
var breadcrumbTextBlock = new TextBlock {
Text = directory.DisplayName, // TODO: Use same ellipsis as in directory listing item
Height = 18,
Margin = new Thickness(4, 0, 0, 0),
VerticalAlignment = VerticalAlignment.Center
};
StackPanelBreadcrumbs.Children.Add(breadcrumbTextBlock);
break;
case FileViewModel file:
// Open file preview pane
pane = new FileInfoPane(file);
break;
default:
throw new NotSupportedException($"{item.GetType()} doesn't have a corresponding Pane");
}
// Add a grid splitter for resizing if this isn't the first pane
if (_panes.Count > 0)
{
AddGridSplitter(width: 5);
}
// Add the pane
GridMain.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(260, GridUnitType.Pixel) // Panes' widths are in pixels, but resizable
});
Grid.SetColumn((UIElement)pane, GridMain.ColumnDefinitions.Count - 1); // Set column position in the main grid
_panes.Add(pane); // Add to stack
GridMain.Children.Add((UIElement)pane); // Add to main grid
// Scroll to the end horizontally
ScrollViewerMain.ScrollToRightEnd();
}
