/// <summary>
/// Update the Grid with a new target
/// </summary>
/// <param name="oldObject">the previous object edited</param>
/// <param name="newObject">the new object being edited</param>
private void UpdatePropertyGridTarget(object oldObject, object newObject)
{
Cleanup();
ClearGridUI();
ResetCategories();
if (newObject != null)
{
componentMode = newObject is IComponentContainer;
//ComponentContainers and PropertyProviders are handled differently with regards to
//how they are categorizer and put into category containers
//as well as the possible header of the category container
if (componentMode)
{
IComponentContainer componentContainer = newObject as IComponentContainer;
foreach (IInspectableComponent component in componentContainer.GetInspectableComponents())
{
AddInspectableComponent(component);
}
//Listen for component added/removed events
componentContainer.ComponentAdded += ComponentContainer_ComponentAdded;
//componentContainer.ComponentRemoved
//Add the button at the bottom to pick components
AddBehaviourButton();
}
else
{
foreach (InspectableProperty property in DefaultPropertyFactory.GetProperties(newObject))
{
InspectablePropertyMetadata propertyMetadata = DefaultPropertyFactory.GetPropertyMetadata(property);
CategoryContainer container = GetDefaultHeaderCategoryContainer(propertyMetadata.Category);
ListenToPropertyChanged(property);
AddProperty(property, propertyMetadata, container);
}
}
}
else
{
SetEmptyGridUi();
}
}
private void OpenContextMenu(object sender)
{
//Generate the available ones based on the selected object
IComponentContainer target = SelectedObject as IComponentContainer;
Button button = sender as Button;
if (target != null && button != null)
{
ComponentDescriptor[] options = target.GetAvailableComponents();
IInspectableComponent[] behaviours = target.GetInspectableComponents();
ContextMenu menu = button.ContextMenu;
menu.Items.Clear();
//Get them sorted by group
var groupedOptions = options.GroupBy(item => item.Group,
(key, group) => new { Group = key, Components = group });
foreach (var group in groupedOptions)
{
MenuItem menuItem = new MenuItem();
menuItem.Header = group.Group;
menu.Items.Add(menuItem);
foreach (var component in group.Components)
{
//Ignore the ones that cant be removed
if (!component.Removable)
{
continue;
}
//Change the tooltip based on two cases
//If the component already exists on the object and its unique, disable and show "Behaviour already added"
//If the component is removable and not unique just show the description of it
bool isEnabled = true;
string tooltip = string.Empty;
//Check if the behaviour already exists
if (behaviours.Any(b => options.Any(o => b.GetType() == o.ComponentType)) && component.Unique)
{
isEnabled = false;
tooltip = "Behaviour already added";
}
else
{
tooltip = component.Description;
}
MenuItem child = new MenuItem();
child.Header = component.Title;
child.IsEnabled = isEnabled;
//Setup click handler
if (isEnabled)
{
child.Click += (s, args) => { AddComponentToCurrentTarget(target, component); };
}
menuItem.Items.Add(child);
}
}
}
}