ICS3U1 Unit 1 Activity 5: Question 1

// Date Completed: July 12, 2017
// Purpose: Calculating sustainability of Fish according to pH of water

// This line makes the button, btnRisk wait for a mouse click
// When the button is clicked, the determineEligibility function is called
btnRisk.addEventListener(MouseEvent.CLICK, determinePH);

// This line makes the textinput, txtinLevel wait for a mouse click
// When the textinput is clicked, the clearLabels function is called
txtinLevel.addEventListener(MouseEvent.CLICK, clearLabels);

// This is the determinepH function
// e:MouseEvent is the click event experienced by the button
// void indicates that the function does not return a value
function determinePH(e:MouseEvent):void

{
    // declare the variables
    var sustainability:Number;

    // get the pH level
    sustainability = Number(txtinLevel.text);


    // determine if the pH will sustain fish in water
    if (sustainability <= 7.5 && sustainability >= 6.5)
    {
        lblWarning.text = "NEUTRAL - FISH IN STREAMS, RIVERS AND LAKES WILL SURVIVE.";
    }

    else if (sustainability > 7.5)
    {
        lblWarning.text = "TOO ALKALINE - FISH IN STREAMS, RIVERS AND LAKES WILL NOT SURVIVE";
    }

    else if (sustainability < 6.5)
    {
        lblWarning.text = "TOO ACIDIC - FISH IN STREAMS, RIVERS AND LAKES WILL NOT SURVIVE";
    }
}

// This is the clearLabels function
// e:MouseEvent is the click event experienced by the textinput
// void indicates that the function does not return a value
function clearLabels(e:MouseEvent):void

{
    lblWarning.text = "";
    txtinLevel.text = "";
}