/// <summary>
/// Invokes the specified action using this toolkit.
/// </summary>
/// <param name="a">The action to invoke in the context of this toolkit.</param>
/// <remarks>
/// Invoke allows dynamic toolkit switching. It will set <see cref="CurrentEngine"/> to this toolkit and reset
/// it back to its original value after the action has been executed.
///
/// Invoke must be executed on the UI thread. The action will not be synchronized with the main UI thread automatically.
/// </remarks>
/// <returns><c>true</c> if the action has been executed sucessfully; otherwise, <c>false</c>.</returns>
public bool Invoke(Action a)
{
ToolkitContext currentContext = SwitchContext();
try {
EnterUserCode();
a();
ExitUserCode(null);
return(true);
} catch (Exception ex) {
ExitUserCode(ex);
return(false);
} finally {
currentContext.Restore();
}
}
public T Invoke <T> (Func <T> func)
{
ToolkitContext currentContext = SwitchContext();
try {
EnterUserCode();
var res = func();
ExitUserCode(null);
return(res);
} catch (Exception ex) {
ExitUserCode(ex);
return(default(T));
} finally {
currentContext.Restore();
}
}
/// <summary>
/// Switches the current context to the context of this toolkit
/// </summary>
ToolkitContext SwitchContext()
{
var current = System.Threading.SynchronizationContext.Current;
// Store the current engine and the current context (which is not necessarily the context of the engine)
var currentContext = new ToolkitContext {
SynchronizationContext = current,
Engine = currentEngine
};
currentEngine = this;
if ((current as XwtSynchronizationContext)?.TargetToolkit != this)
{
System.Threading.SynchronizationContext.SetSynchronizationContext(SynchronizationContext);
}
return(currentContext);
}
public HardDisksController(ToolkitContext context, IHostingEnvironment hostingEnvironment, ILogger <HardDisksController> logger)
{
_context = context;
_hostingEnvironment = hostingEnvironment;
_logger = logger;
}
