/// <summary>
/// Loads a visual tree from the specified XAML, which will be placed under the parent. Leave null for no parent.
/// </summary>
public void LoadFromXAML(string xml, Element parent)
{
if (string.IsNullOrEmpty(xml))
throw new ArgumentException(nameof(xml), "XAML must not be empty.");
var doc = new XmlDocument();
doc.LoadXml(xml);
var nodes = doc.ChildNodes;
LoadNode(nodes, parent);
}
/// <summary>
/// Create an instance of an element by its name.
/// </summary>
public Element CreateControlInstance(XmlNode node, Element parent)
{
// Add content (inline text) from the XML to a parent element.
if (parent != null && node.Name.StartsWith("#text") && node.ParentNode != null)
parent.AddContent(node.Value.Trim().TrimStart(newlineChars).TrimEnd(newlineChars));
if (node.Name.StartsWith("#")) return null;
var t = Type.GetType(typeof (Control).Namespace + '.' + node.Name);
// Create a new element.
return (Element) Activator.CreateInstance(t, manager);
}
private void LoadNode(IEnumerable nodes, Element parent)
{
foreach (XmlNode node in nodes)
{
var control = CreateControlInstance(node, parent);
if (control == null) continue;
var props = TypeDescriptor.GetProperties(control.GetType());
// Set attributes.
if (node.Attributes != null)
{
foreach (XmlAttribute xmlProperty in node.Attributes)
{
var propertyName = xmlProperty.Name;
var propertyDescriptor = props[propertyName];
if (propertyDescriptor != null)
{
object value = null;
// Convert the attribute to a value using a converter or Convert.ChangeType.
var found = false;
for (var i = 0; i < converters.Count; i++)
{
var converter = converters[i];
if (converter.CanConvert(propertyDescriptor.PropertyType))
{
value = converter.Convert(propertyDescriptor.PropertyType, xmlProperty.Value);
found = true;
break;
}
}
if (!found)
value = Convert.ChangeType(xmlProperty.Value, propertyDescriptor.PropertyType);
propertyDescriptor.SetValue(control, value);
}
}
}
// Add element to parent or set as root element.
if (parent == null)
manager.Elements.Add(control);
else
parent.Add(control);
LoadNode(node.ChildNodes, control);
}
}
public Window(Manager manager)
: base(manager)
{
// TODO: Replace with control template.
containerPanel = new StackPanel(manager);
var background = (Color)"#323741";
windowBorder =new Border(manager)
{
CornerRadius = 5,
BorderThickness = 1,
Background = Background,
BorderBrush = background,
};
base.Add(windowBorder);
titleBorder = new Border(manager)
{
Background = background,
Padding = new Thickness(8, 12),
HorizontalAlignment = HorizontalAlignment.Stretch,
VerticalAlignment = VerticalAlignment.Top,
};
titleLabel = new TextBlock(manager, Title)
{
FontStyle = FontStyle.Bold,
TextColor = Color.White,
HorizontalAlignment = HorizontalAlignment.Left,
TextAlignment = Alignment.TopLeft
};
windowBorder.Add(containerPanel);
containerPanel.Add(titleBorder);
titleBorder.Add(titleLabel);
contentArea = new StackPanel(manager)
{
Margin = 8,
};
containerPanel.Add(contentArea);
Margin = 16;
Effects.Add(new DropShadowEffect(manager, 12, Color.Black * .2f));
}
private void LoadNode(IEnumerable nodes, Element parent)
{
foreach (XmlNode node in nodes)
{
// Create an instance of the control.
var control = CreateControlInstance(node, parent);
if (control == null) continue;
control.LogicalParent = parent;
control.Parent = parent;
if (node.Attributes != null)
{
// Get all the dependency properties (and those inherited) of the control.
var props = DependencyProperty.GetProperties(control.GetType());
List<DependencyProperty> parentProps = null;
// For each xml property, try and find a dependency property to set.
foreach (XmlAttribute xmlProperty in node.Attributes)
{
var propertyName = xmlProperty.Name;
var prop = props.FirstOrDefault(p => p.Name == propertyName);
if (prop != null)
{
if (prop.Attached)
throw new InvalidOperationException("Attached property cannot be set on the parent.");
// Convert the string value to the dependency property type.
var value = ConvertValue(xmlProperty.Value, prop.ValueType);
control.SetValue(prop, value);
}
// Attached properties.
else if (propertyName.Contains(".") && parent != null)
{
if (parentProps == null) // Get parent properties only when needed and only once.
parentProps = DependencyProperty.GetProperties(parent.GetType());
var parts = propertyName.Split('.');
if (parts.Length == 2)
{
var parentName = parts[0];
propertyName = parts[1];
var parentType = parent.GetType();
if (parentType.Name == parentName)
{
prop = parentProps.FirstOrDefault(p => p.Attached && p.Name == propertyName);
if (prop != null)
{
var value = ConvertValue(xmlProperty.Value, prop.ValueType);
control.SetValue(prop, value);
}
}
else
throw new InvalidOperationException("No parent found matching " + parentName);
}
}
}
}
// Add element to parent or set as root element.
if (parent == null)
manager.AddRootElement(control);
else
parent.Add(control);
LoadNode(node.ChildNodes, control);
}
}
/// <summary>
/// Remove a root level element from the UI.
/// </summary>
public void RemoveRootElement(Element element)
{
elements.Remove(element);
}
/// <summary>
/// Add an element directly and not to the presenter.
/// </summary>
internal virtual void AddDirect(Element element)
{
base.Add(element);
}
public override void Add(Element element)
{
element.LogicalParent = LogicalParent;
Presenter.Add(element);
}
/// <summary> /// Remove an element from the arrange queue. /// </summary> public void RemoveArrange(Element element) => arrangeQueue.Remove(element);
/// <summary>
/// Add an element to the measure queue.
/// </summary>
public void AddMeasure(Element element)
{
if (!measureQueue.Contains(element))
measureQueue.Add(element);
}
/// <summary>
/// Add an element to the arrange queue.
/// </summary>
public void AddArrange(Element element)
{
if (!arrangeQueue.Contains(element))
arrangeQueue.Add(element);
}
/// <summary>
/// Removes a child element from this element.
/// </summary>
/// <param name="element">The element to remove.</param>
/// <param name="dispose">Should the control be disposed and destroyed?</param>
public virtual void Remove(Element element, bool dispose = true)
{
if (element != null)
{
if (Elements.Contains(element))
{
Elements.Remove(element);
// Element no longer has a parent.
element.Parent = null;
element.DependencyParent = null;
if (dispose)
element.Dispose();
}
}
}
/// <summary>
/// Adds a child element to this element.
/// </summary>
/// <param name="element">The element to add.</param>
public virtual void Add(Element element)
{
if (element.LogicalParent == null && LogicalParent != null)
element.LogicalParent = LogicalParent;
if (Elements.Count >= MaxChildren)
throw new InvalidOperationException("This element may not have any more children. (Maximum: " +
MaxChildren + ") Try placing it inside a panel.");
// If this control doesn't already contain the element.
if (!Elements.Contains(element))
{
// Remove control from prior parent.
element.Parent?.Remove(element);
// Reset the level depth.
element.Level = -1;
element.Manager = Manager;
element.Parent = this;
// Add to this element.
Elements.Add(element);
element.DependencyParent = this;
// Add to layout queue.
Manager.Layout.AddMeasure(element);
Manager.Layout.AddArrange(element);
}
}
private static void AddToTree(Element element, StringBuilder sb)
{
sb.Append(Environment.NewLine + new string(' ', element.Level * 3) +
element.ToString().Remove(0, "Pyratron.UI.Controls.".Length));
foreach (var child in element.Elements)
AddToTree(child, sb);
}
/// <summary> /// Remove an element from the measure queue. /// </summary> public void RemoveMeasure(Element element) => measureQueue.Remove(element);
public override void Add(Element element)
{
contentArea.Add(element);
}
public void AddElement(Element element)
{
Elements.Add(element);
}
public override void Remove(Element element, bool dispose = true)
{
Presenter.Remove(element, dispose);
}
public override void Add(Element element)
{
groupsInvalidated = true;
base.Add(element);
}
/// <summary>
/// Removes an element directly and not from the presenter.
/// </summary>
internal virtual void RemoveDirect(Element element)
{
base.Remove(element, false);
}
/// <summary>
/// Add a root level element to the UI.
/// </summary>
public void AddRootElement(Element element)
{
element.Level = 0;
element.Parent = null;
elements.Add(element);
}
