Displaying the Acrobat progress bar in a LiveCycle Designer (XFA) Form

NOTE: As of Reader version 21.001.20135 (Feb 2021) it seems you must begin the Thermometer before you can set the value.

 

When Reader has a lengthy operation to complete it displays a progress bar in the bottom right hand corner, for example;

This is available to a Designer form via the Thermometer object, for example;
 


function showProgress(t)

{
    for (var ii = 0; ii < t.duration; ii++)
    {
        for (var i = 0; i < 500000; i++) {}

        t.value += 1;
        t.text = "Step " + ii;
        if (t.cancelled)
        {
            return false;
        }
    }
    return true;

}


var t = app.thermometer;

t.duration = 10;

t.begin();


t.value = 0;

t.text = "";

var completed = showProgress(t);

if (completed)

{
    app.alert("completed");

}

else

{
    app.alert("cancelled");

} 


Download the sample form, Thermometer.pdf.