Here's how I found it. While trying to add my custom form widget to the form
I got the error "not supported for reseting". I found in the Qooxdoo source
where this check happens and in Resetter.js:51 this line evaluates false:
"if (this.__supportsValue(item))". Here is the method definition for
__supportsValue:
__supportsValue : function(formItem) {
var clazz = formItem.constructor;
return (
qx.Class.hasInterface(clazz, qx.ui.form.IBooleanForm) ||
qx.Class.hasInterface(clazz, qx.ui.form.IColorForm) ||
qx.Class.hasInterface(clazz, qx.ui.form.IDateForm) ||
qx.Class.hasInterface(clazz, qx.ui.form.INumberForm) ||
qx.Class.hasInterface(clazz, qx.ui.form.IStringForm)
);
}
So my conclusion is either to use one of the standard form widget interfaces
or redefine the add method to use a modified version of __supportsValue that
allows custom interfaces. I can use the IStringForm interface and everything
works just fine, but for that matter any "valid" interface works since they
all have the same prototypes defined. This same issue exists in the
validation manager as well.
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