/// <summary>
/// <para>Returns a hook attached to the current <paramref name="instance"/>, that is assignable to a variable of <typeparamref name="THook"/> type.</para>
/// </summary>
/// <typeparam name="THook">The type of a hook to search for.</typeparam>
/// <param name="instance">The instance of a hookable type.</param>
/// <returns>The hook that is assignable to a variable of <typeparamref name="THook"/> type, if found; otherwise, <see langword="default"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="instance"/> is <see langword="null"/>.</exception>
public static THook GetHook <THook>(this InvItem instance)
{
if (instance is null)
{
throw new ArgumentNullException(nameof(instance));
}
IHookController <InvItem> controller = GetHookController(instance, ref instance.__RogueLibsHooks, false);
return(controller != null?controller.GetHook <THook>() : default);
public void RemoveController(IHookController ctrl)
{
HookInfo hInfo = GetInfoByThread();
hInfo.HookControllers.Remove(ctrl);
if (hInfo.HookControllers.Count == 0)
{
RemoveHook(hInfo, false);
}
}
public void AddController(IHookController ctrl)
{
HookInfo hInfo = GetInfoByThread();
hInfo.HookControllers.Add(ctrl);
if (hInfo.HookControllers.Count == 1)
{
InstallHook(hInfo);
}
}
public void CheckController(IHookController ctrl)
{
HookInfo hInfo = GetInfoByThread();
if (hInfo.HookControllers.Contains(ctrl))
{
return;
}
AddController(ctrl);
}
internal bool InternalPreFilterMessage(HookInfo hInfo, int Msg, Control wnd, IntPtr HWnd, IntPtr WParam, IntPtr LParam)
{
bool result = false;
for (int n = 0; n < hInfo.HookControllers.Count; n++)
{
IHookController ctrl = hInfo.HookControllers[n] as IHookController;
result |= ctrl.InternalPreFilterMessage(Msg, wnd, HWnd, WParam, LParam);
}
return(result);
}
/// <summary>
/// <para>Detaches a hook of the specified <typeparamref name="THook"/> type from the current <paramref name="instance"/>.</para>
/// </summary>
/// <typeparam name="THook">The type of a hook to detach from the <paramref name="instance"/>.</typeparam>
/// <param name="instance">The instance of a hookable type.</param>
/// <returns><see langword="true"/>, if a hook was successfully detached; otherwise, <see langword="false"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="instance"/> is <see langword="null"/>.</exception>
public static bool RemoveHook <THook>(this Trait instance) where THook : IHook <Trait>
{
if (instance is null)
{
throw new ArgumentNullException(nameof(instance));
}
IHookController <Trait> controller = GetHookController(instance, ref instance.__RogueLibsHooks, false);
if (controller is null)
{
return(false);
}
IHook <Trait> hook = controller.GetHook <THook>();
return(controller.RemoveHook(hook));
}
internal bool InternalPostFilterMessage(HookInfo hInfo, int Msg, Control wnd, IntPtr HWnd, IntPtr WParam, IntPtr LParam)
{
bool result = false;
for (int n = hInfo.HookControllers.Count - 1; n >= 0; n--)
{
IHookController ctrl = hInfo.HookControllers[n] as IHookController;
result |= ctrl.InternalPostFilterMessage(Msg, wnd, HWnd, WParam, LParam);
if (Msg == 0x2)
{
if (ctrl.OwnerHandle == HWnd)
{
RemoveController(ctrl);
}
}
}
return(result);
}
public void RemoveController(IHookController ctrl)
{
HookInfo hInfo = GetInfoByThread();
hInfo.HookControllers.Remove(ctrl);
if (hInfo.HookControllers.Count == 0) RemoveHook(hInfo, false);
}
public void CheckController(IHookController ctrl)
{
HookInfo hInfo = GetInfoByThread();
if (hInfo.HookControllers.Contains(ctrl)) return;
AddController(ctrl);
}
public void AddController(IHookController ctrl)
{
HookInfo hInfo = GetInfoByThread();
hInfo.HookControllers.Add(ctrl);
if (hInfo.HookControllers.Count == 1) InstallHook(hInfo);
}
