/// <summary>
/// Initializes a new instance of the <see cref="OptionsViewModel"/> class.
/// </summary>
/// <param name="optionsService">The options service.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="optionsService"/> is <see langword="null"/>.
/// </exception>
public OptionsViewModel(IOptionsService optionsService)
: this()
{
if (optionsService == null)
{
throw new ArgumentNullException(nameof(optionsService));
}
_rootNode = new MergeableNode <OptionsPageViewModel>(null)
{
Children = new MergeableNodeCollection <OptionsPageViewModel>()
};
OkCommand = new DelegateCommand(Ok);
ApplyCommand = new DelegateCommand(Apply);
CancelCommand = new DelegateCommand(Cancel);
// Merge all options node collections.
_rootNode.Children.Clear();
var merger = new OptionsMergeAlgorithm();
foreach (var optionsNodes in optionsService.OptionsNodeCollections)
{
merger.Merge(_rootNode.Children, optionsNodes);
}
SelectedNode = OptionsNodes.FirstOrDefault();
}
public void Constructor1()
{
MergeableNode<NamedObject> node = new MergeableNode<NamedObject>();
Assert.IsNull(node.Content);
Assert.IsNull(node.Parent);
Assert.That(node.Children, Is.Null.Or.Empty);
Assert.IsNull(node.Next);
Assert.IsNull(node.Previous);
Assert.That(node.MergePoints.Count(), Is.EqualTo(1));
Assert.That(node.MergePoints.First(), Is.EqualTo(new MergePoint(MergeOperation.Append, null)));
}
public void Constructor1()
{
MergeableNode <NamedObject> node = new MergeableNode <NamedObject>();
Assert.IsNull(node.Content);
Assert.IsNull(node.Parent);
Assert.That(node.Children, Is.Null.Or.Empty);
Assert.IsNull(node.Next);
Assert.IsNull(node.Previous);
Assert.That(node.MergePoints.Count(), Is.EqualTo(1));
Assert.That(node.MergePoints.First(), Is.EqualTo(new MergePoint(MergeOperation.Append, null)));
}
private void Show(MergeableNode <OptionsPageViewModel> optionsNode)
{
Logger.Info("Showing Options dialog.");
if (optionsNode != null)
{
Options.SelectedNode = optionsNode;
}
_windowService.ShowDialog(Options);
Logger.Info("Options dialog closed.");
}
protected override void OnMerge(MergeableNode <OptionsPageViewModel> existingNode, MergeableNode <OptionsPageViewModel> node)
{
if (!(existingNode.Content is OptionsGroupViewModel) || !(node.Content is OptionsGroupViewModel))
{
// Nodes cannot be merged.
string message = Invariant(
$"Cannot merge options \"{existingNode.Content.DisplayName}\" - only nodes containing OptionsPageGroup objects can be merged.");
Logger.Error(message);
throw new MergeException(message);
}
// Call base method to merge children.
base.OnMerge(existingNode, node);
}
/// <summary>
/// Gets the title of the Quick Launch item for the specified options node.
/// </summary>
/// <param name="optionsNode">The options node.</param>
/// <returns>The title of the Quick Launch item.</returns>
private static string GetTitle(MergeableNode <OptionsPageViewModel> optionsNode)
{
var stringBuilder = new StringBuilder("Options → ");
foreach (var node in optionsNode.GetAncestors().Reverse())
{
if (node.Content != null)
{
stringBuilder.Append(node.Content.DisplayName);
stringBuilder.Append(" → ");
}
}
stringBuilder.Append(optionsNode.Content.DisplayName);
return(stringBuilder.ToString());
}
private void ActivateNode(MergeableNode <OptionsPageViewModel> node)
{
if (node == null || node.Content == ActiveItem)
{
return;
}
// Find a suitable node to activate. If the node contains an OptionsGroupViewModel
// then find the first descendant which isn't an OptionsGroupViewModel.
while (node.Content is OptionsGroupViewModel && node.Children != null && node.Children.Count > 0)
{
node = node.Children[0];
}
ActivateItem(node.Content);
}
/// <summary>
/// Gets the title of the Quick Launch item for the specified options node.
/// </summary>
/// <param name="optionsNode">The options node.</param>
/// <returns>The title of the Quick Launch item.</returns>
private static string GetTitle(MergeableNode<OptionsPageViewModel> optionsNode)
{
var stringBuilder = new StringBuilder("Options → ");
foreach (var node in optionsNode.GetAncestors().Reverse())
{
if (node.Content != null)
{
stringBuilder.Append(node.Content.DisplayName);
stringBuilder.Append(" → ");
}
}
stringBuilder.Append(optionsNode.Content.DisplayName);
return stringBuilder.ToString();
}
public void GetRelativeNodeInGroup()
{
var namedObject = new NamedObject("Node");
var children = new[]
{
new MergeableNode <NamedObject>(new NamedObject("ChildA")),
new MergeableNode <NamedObject>(new NamedObject("ChildB")),
new MergeableNode <NamedObject>(new NamedObject("ChildC")),
};
MergeableNode <NamedObject> node = new MergeableNode <NamedObject>(namedObject, children);
Assert.IsNull(node.Children[0].Previous);
Assert.AreSame(children[0], node.Children[1].Previous);
Assert.AreSame(children[1], node.Children[2].Previous);
Assert.AreSame(children[1], node.Children[0].Next);
Assert.AreSame(children[2], node.Children[1].Next);
Assert.IsNull(node.Children[2].Next);
}
public void GetRelativeNodeInGroup()
{
var namedObject = new NamedObject("Node");
var children = new[]
{
new MergeableNode<NamedObject>(new NamedObject("ChildA")),
new MergeableNode<NamedObject>(new NamedObject("ChildB")),
new MergeableNode<NamedObject>(new NamedObject("ChildC")),
};
MergeableNode<NamedObject> node = new MergeableNode<NamedObject>(namedObject, children);
Assert.IsNull(node.Children[0].Previous);
Assert.AreSame(children[0], node.Children[1].Previous);
Assert.AreSame(children[1], node.Children[2].Previous);
Assert.AreSame(children[1], node.Children[0].Next);
Assert.AreSame(children[2], node.Children[1].Next);
Assert.IsNull(node.Children[2].Next);
}
/// <summary>
/// Initializes a new instance of the <see cref="OptionsViewModel"/> class.
/// </summary>
/// <param name="optionsService">The options service.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="optionsService"/> is <see langword="null"/>.
/// </exception>
public OptionsViewModel(IOptionsService optionsService)
: this()
{
if (optionsService == null)
throw new ArgumentNullException(nameof(optionsService));
_rootNode = new MergeableNode<OptionsPageViewModel>(null) { Children = new MergeableNodeCollection<OptionsPageViewModel>() };
OkCommand = new DelegateCommand(Ok);
ApplyCommand = new DelegateCommand(Apply);
CancelCommand = new DelegateCommand(Cancel);
// Merge all options node collections.
_rootNode.Children.Clear();
var merger = new OptionsMergeAlgorithm();
foreach (var optionsNodes in optionsService.OptionsNodeCollections)
merger.Merge(_rootNode.Children, optionsNodes);
SelectedNode = OptionsNodes.FirstOrDefault();
}
public void Constructor3()
{
var namedObject = new NamedObject("Node");
var children = new[]
{
new MergeableNode<NamedObject>(new NamedObject("ChildA")),
new MergeableNode<NamedObject>(new NamedObject("ChildB")),
new MergeableNode<NamedObject>(new NamedObject("ChildC")),
};
MergeableNode<NamedObject> node = new MergeableNode<NamedObject>(namedObject, children);
Assert.AreSame(namedObject, node.Content);
Assert.IsNull(node.Parent);
Assert.IsNotNull(node.Children);
Assert.AreEqual(3, node.Children.Count);
Assert.AreSame(children[0], node.Children[0]);
Assert.AreSame(children[1], node.Children[1]);
Assert.AreSame(children[2], node.Children[2]);
Assert.IsNull(node.Next);
Assert.IsNull(node.Previous);
Assert.That(node.MergePoints.Count(), Is.EqualTo(1));
Assert.That(node.MergePoints.First(), Is.EqualTo(new MergePoint(MergeOperation.Append, null)));
}
public void Constructor3()
{
var namedObject = new NamedObject("Node");
var children = new[]
{
new MergeableNode <NamedObject>(new NamedObject("ChildA")),
new MergeableNode <NamedObject>(new NamedObject("ChildB")),
new MergeableNode <NamedObject>(new NamedObject("ChildC")),
};
MergeableNode <NamedObject> node = new MergeableNode <NamedObject>(namedObject, children);
Assert.AreSame(namedObject, node.Content);
Assert.IsNull(node.Parent);
Assert.IsNotNull(node.Children);
Assert.AreEqual(3, node.Children.Count);
Assert.AreSame(children[0], node.Children[0]);
Assert.AreSame(children[1], node.Children[1]);
Assert.AreSame(children[2], node.Children[2]);
Assert.IsNull(node.Next);
Assert.IsNull(node.Previous);
Assert.That(node.MergePoints.Count(), Is.EqualTo(1));
Assert.That(node.MergePoints.First(), Is.EqualTo(new MergePoint(MergeOperation.Append, null)));
}
private void ActivateNode(MergeableNode<OptionsPageViewModel> node)
{
if (node == null || node.Content == ActiveItem)
return;
// Find a suitable node to activate. If the node contains an OptionsGroupViewModel
// then find the first descendant which isn't an OptionsGroupViewModel.
while (node.Content is OptionsGroupViewModel && node.Children != null && node.Children.Count > 0)
node = node.Children[0];
ActivateItem(node.Content);
}
