44 lines
1.5 KiB
C#
44 lines
1.5 KiB
C#
namespace Caliburn.Micro.Core {
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/// <summary>
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/// A base class for various implementations of <see cref="IConductor"/> that maintain an active item.
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/// </summary>
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/// <typeparam name="T">The type that is being conducted.</typeparam>
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public abstract class ConductorBaseWithActiveItem<T> : ConductorBase<T>, IConductActiveItem where T: class {
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T activeItem;
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/// <summary>
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/// The currently active item.
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/// </summary>
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public T ActiveItem {
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get { return activeItem; }
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set { ActivateItem(value); }
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}
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/// <summary>
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/// The currently active item.
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/// </summary>
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/// <value></value>
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object IHaveActiveItem.ActiveItem {
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get { return ActiveItem; }
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set { ActiveItem = (T)value; }
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}
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/// <summary>
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/// Changes the active item.
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/// </summary>
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/// <param name="newItem">The new item to activate.</param>
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/// <param name="closePrevious">Indicates whether or not to close the previous active item.</param>
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protected virtual void ChangeActiveItem(T newItem, bool closePrevious) {
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ScreenExtensions.TryDeactivate(activeItem, closePrevious);
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newItem = EnsureItem(newItem);
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if(IsActive)
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ScreenExtensions.TryActivate(newItem);
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activeItem = newItem;
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NotifyOfPropertyChange("ActiveItem");
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OnActivationProcessed(activeItem, true);
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}
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}
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} |