Using free-form linguistic input in a dynamic input field

Question

I've been playing around with dynamic input fields; here's a basic example, which just consists of an input field where the user can enter a function and then a button that can be clicked to graph the function. What I'm wondering is: is there a way to allow free-form linguistic input to be entered in the input field? Right now, I must enter regular Mathematica syntax like Cos[x] to get a graph, but I'd really like to be able to enter something like "cos x". (Ultimately, I'd like my dynamic module to do more than just graph the function, which is why I don't want to just use Wolfram Alpha directly.)

DynamicModule[{graph, f, button},
 graph = Plot[1, {x, 0, 1}, PlotRange -> {0, 0.1}, Axes -> False, 
   ImageSize -> 480, Background -> White];
 f = Cos[x];

 button = Button["Graph!",
   graph = Plot[f, {x, -3, 3}, ImageSize -> 480, Background -> White];
   ];

 Panel[
  Grid[{
    {InputField[Dynamic[f]], button},
    {Dynamic[graph], SpanFromLeft}},
   Spacings -> {2, 1}, Alignment -> {Left, Baseline}
   ]
  ]
 ]

Thanks!

Answer 1

I believe that Mathematica feeds the input string in free-form linguistic input to the function WolframAlpha. Try something like

Manipulate[
 If[in =!= "", WolframAlpha[in], "Enter input"],
 {{in, ""}, InputField[Dynamic[in], String] &}
 ]

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Response to comment

I can't find a definitive statement in the documentation that an internet connection is required for all free-form linguistic input, but the following suggests that it is (just as I thought, too).