/// <summary>
/// Expands the specified items.
/// </summary>
/// <param name="items">The items to expand.</param>
/// <param name="mode">Specifies how the items will be expanded.</param>
public void Expand(IEnumerable <SolutionItem> items, SolutionItemExpansionMode mode = SolutionItemExpansionMode.Single)
{
if (items is null)
{
throw new ArgumentNullException(nameof(items));
}
ThreadHelper.ThrowIfNotOnUIThread();
// Although the `EXPANDFLAGS` has the `[Flags]` attribute, the values
// cannot actually be combined because the values are sequential.
// We need to make multiple calls for each mode that is set.
if ((mode & SolutionItemExpansionMode.Ancestors) == SolutionItemExpansionMode.Ancestors)
{
Expand(items, EXPANDFLAGS.EXPF_ExpandParentsToShowItem);
}
// Expanding recursively will also expand the given items, so if we
// expand recurisvely, then we don't need to check for the `Single` mode.
if ((mode & SolutionItemExpansionMode.Recursive) == SolutionItemExpansionMode.Recursive)
{
Expand(items, EXPANDFLAGS.EXPF_ExpandFolderRecursively);
}
else if ((mode & SolutionItemExpansionMode.Single) == SolutionItemExpansionMode.Single)
{
Expand(items, EXPANDFLAGS.EXPF_ExpandFolder);
}
}
/// <summary>
/// Expands the specified item.
/// </summary>
/// <param name="item">The item to expand.</param>
/// <param name="mode">Specifies how the item will be expanded.</param>
public void Expand(SolutionItem item, SolutionItemExpansionMode mode = SolutionItemExpansionMode.Single)
{
if (item is null)
{
throw new ArgumentNullException(nameof(item));
}
ThreadHelper.ThrowIfNotOnUIThread();
Expand(new[] { item }, mode);
}
protected override async Task ExecuteAsync(OleMenuCmdEventArgs e)
{
await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
SolutionExplorerWindow solutionExplorer = await VS.Windows.GetSolutionExplorerWindowAsync();
if (solutionExplorer != null)
{
IEnumerable <SolutionItem> items = await solutionExplorer.GetSelectionAsync();
SolutionItemExpansionMode mode = SolutionItemExpansionMode.None;
ModifierKeys modifiers = Keyboard.Modifiers;
if (modifiers == ModifierKeys.None)
{
mode = SolutionItemExpansionMode.Single;
}
else
{
if ((modifiers & ModifierKeys.Control) == ModifierKeys.Control)
{
mode |= SolutionItemExpansionMode.Recursive;
}
if ((modifiers & ModifierKeys.Shift) == ModifierKeys.Shift)
{
// To expand to the selected items, theose items and their ancestors
// all need to be collapsed, so collapse them first, then pause for a
// moment so that you can see that we start from a collapsed state.
foreach (SolutionItem item in items)
{
CollapseRecursively(solutionExplorer, item);
}
await Task.Delay(2000);
mode |= SolutionItemExpansionMode.Ancestors;
}
}
solutionExplorer.Expand(items, mode);
}
}
