TITLE:: ParamView
summary:: show a parameter of a JITLib process
categories:: Libraries>JITLib
related:: Classes/JITGui, Overviews/JITLib

DESCRIPTION::
ParamView displays a parameter value, and switches representation as appropriate for value: A single number is shown by an EZSlider, a pair of numbers by an EZRanger, and anything else as code on an EZText.

First examples:
code::

w = Window("test", Rect(20, 820, 400, 100)).front;
w.addFlowLayout;
~pv = ParamView(w, Rect(20, 20, 360, 20));
~pv2 = ParamView(w, Rect(20, 20, 360, 40));

// not working properly yet
~pv.bounds_(Rect(4, 4, 300, 40));

~pv.dump
~pv.viewType_(0); // EZNumber
~pv.viewType_(1); // EZRanger
~pv.viewType_(2); // EZText

~pv.label_(\freq);
~pv.spec_(\freq);  // needs spec for EZSlider


~pv.value_(200);
~pv.value_(2000);
// switches to EZRanger
~pv.value_([200, 2000]);
// 3 numbers -> switches to EZText
~pv.value_([20, 200, 2000]);
// anything else -> EZText
~pv.value_(\blonk);
~pv.action = { |pv| pv.value.postcs };

::

CLASSMETHODS::

METHOD:: new
create a new ParamView with
ARGUMENT:: parent
the parent window or view
ARGUMENT:: bounds
the bounds of the view
ARGUMENT:: label
a label to display
ARGUMENT:: spec
a controlspec for the value
ARGUMENT:: action
an action to do when the value changes
ARGUMENT:: initVal
an initial value
ARGUMENT:: initAction
a boolean whether to perform the action on init.


INSTANCEMETHODS::

METHOD:: label
get and set the view's label

METHOD:: spec
get and set the view's control spec

METHOD:: action
get and set the paramview's action

private:: zone, zones

METHOD:: ezviews, slider, ranger, textview
the 3 ezviews between which the ParamView switches

METHOD:: currview
the currently shown view of these

METHOD:: value
get and set value

METHOD:: valueAction
get and set value and do action

METHOD:: doAction
do the view's action

METHOD:: viewType
get and set the view's type:
0 is single number -> EZSlider,
1 is pair of numbers -> EZRanger,
2 is anything else

METHOD:: valueType
determine viewType for a given value


METHOD:: background
get and set background color

private:: init