<!DOCTYPE html>
<html>
<head>
<script src="../../../resources/js-test-pre.js"></script>
</head>
<body>
<p id="description"></p>
<div id="console"></div>
<script>
description('Check stepping-up and -down for range input from renderer.');

var input = document.createElement('input');
var invalidStateErr = '"Error: InvalidStateError: DOM Exception 11"';

function sendKey(keyName) {
    var event = document.createEvent('KeyboardEvent');
    event.initKeyboardEvent('keydown', true, true, document.defaultView, keyName);
    input.dispatchEvent(event);
}

function setInputAttributes(min, max, step, value) {
    input.min = min;
    input.max = max;
    input.step = step;
    input.value = value;
}

function stepUp(value, step, max, optionalStepCount) {
    setInputAttributes(null, max, step, value);
    if (typeof optionalStepCount != "undefined")
        if (optionalStepCount < 0)
            for (var i = 0; i < -optionalStepCount; i++)
                sendKey('Down');
        else
            for (var i = 0; i < optionalStepCount; i++)
                sendKey('Up');
    else
        sendKey('Up');
    return input.value;
}

function stepDown(value, step, min, optionalStepCount) {
    setInputAttributes(min, null, step, value);
    if (typeof optionalStepCount != "undefined")
        if (optionalStepCount < 0)
            for (var i = 0; i < -optionalStepCount; i++)
                sendKey('Up');
        else
            for (var i = 0; i < optionalStepCount; i++)
                sendKey('Down');
    else
        sendKey('Down');
    return input.value;
}

// Range value gets automatically shifted based on bounds,
// So always set the min and max first to get expected behavior

function stepUpExplicitBounds(min, max, step, value, stepCount) {
    setInputAttributes(min, max, step, value);
    if (typeof stepCount !== 'undefined')
        if (stepCount < 0) {
            for (var i = 0; i < -stepCount; i++)
                sendKey('Down');
        } else {
            for (var i = 0; i < stepCount; i++)
                sendKey('Up');
        }
    else
        sendKey('Up');
    return input.value;
}

function stepDownExplicitBounds(min, max, step, value, stepCount) {
    setInputAttributes(min, max, step, value);
    if (typeof stepCount !== 'undefined')
        if (stepCount < 0) {
            for (var i = 0; i < -stepCount; i++)
                sendKey('Up');
        } else {
            for (var i = 0; i < stepCount; i++)
                sendKey('Down');
        }
    else
        sendKey('Down');
    return input.value;
}

input.type = 'range';
debug('Function arguments are (min, max, step, value, [stepCount]).');
debug('Using the default values');
shouldBe('stepUpExplicitBounds(null, null, null, "")', '"51"');
shouldBe('stepDownExplicitBounds(null, null, null, "")', '"49"');
shouldBe('stepUpExplicitBounds(null, null, "any", "")', '"51"');
shouldBe('stepDownExplicitBounds(null, null, "any", "")', '"49"');
shouldBe('stepUpExplicitBounds(null, null, "foo", "")', '"51"');
shouldBe('stepDownExplicitBounds(null, null, "foo", "")', '"49"');
shouldBe('stepUpExplicitBounds(null, null, null, "foo")', '"51"');
shouldBe('stepDownExplicitBounds(null, null, null, "foo")', '"49"');
shouldBe('stepUpExplicitBounds(null, null, "any", "foo")', '"51"');
shouldBe('stepDownExplicitBounds(null, null, "any", "foo")', '"49"');
shouldBe('stepUpExplicitBounds(null, null, "foo", "foo")', '"51"');
shouldBe('stepDownExplicitBounds(null, null, "foo", "foo")', '"49"');
debug('Normal cases');
shouldBe('stepUpExplicitBounds(null, null, null, "0")', '"1"');
shouldBe('stepUpExplicitBounds(null, null, null, "1", 2)', '"3"');
shouldBe('stepUpExplicitBounds(null, null, null, "3", -1)', '"2"');
shouldBe('stepDownExplicitBounds("-100", null, null, "2")', '"1"');
shouldBe('stepDownExplicitBounds("-100", null, null, "1", 2)', '"-1"');
shouldBe('stepDownExplicitBounds("-100", null, null, "-1", -1)', '"0"');
debug('Invalid step value');
shouldBe('stepUpExplicitBounds(null, null, "foo", "0")', '"1"');
shouldBe('stepUpExplicitBounds(null, null, "0", "1")', '"2"');
shouldBe('stepUpExplicitBounds(null, null, "-1", "2")', '"3"');
shouldBe('stepDownExplicitBounds(null, null, "foo", "1")', '"0"');
shouldBe('stepDownExplicitBounds(null, null, "0", "2")', '"1"');
shouldBe('stepDownExplicitBounds(null, null, "-1", "3")', '"2"');
debug('Step=any');
shouldBe('stepUpExplicitBounds(null, null, "any", "1")', '"2"');
shouldBe('stepDownExplicitBounds(null, null, "any", "1")', '"0"');
debug('Overflow/underflow');
shouldBe('stepUpExplicitBounds(null, "100", "1", "99")', '"100"');
shouldBe('stepUpExplicitBounds(null, "100", "1", "100")', '"100"');
shouldBe('stepUpExplicitBounds(null, "100", "1", "99", 2)', '"100"');
shouldBe('stepDownExplicitBounds("0", null, "1", "1")', '"0"');
shouldBe('stepDownExplicitBounds("0", null, "1", "0")', '"0"');
shouldBe('stepDownExplicitBounds("0", null, "1", "1", 2)', '"0"');
shouldBe('stepDownExplicitBounds(null, null, "3.40282346e+38", "1", 2)', '"0"');
shouldBe('stepUpExplicitBounds(-100, 0, 1, -1)', '"0"');
shouldBe('stepUpExplicitBounds(null, 0, 1, 0)', '"0"');
shouldBe('stepUpExplicitBounds(-100, 0, 1, -1, 2)', '"0"');
shouldBe('stepUpExplicitBounds(null, null, "3.40282346e+38", "1", 2)', '"0"');
debug('stepDown()/stepUp() for stepMismatch values');
shouldBe('stepUpExplicitBounds(null, null, 2, 1)', '"4"');
shouldBe('stepUpExplicitBounds(0, null, 10, 9, 9)', '"100"');
shouldBe('stepDownExplicitBounds(0, null, 10, 19)', '"10"');
debug('value + step is <= max, but rounded result would be > max.');
shouldBe('stepUpExplicitBounds(null, 99, 10, 89)', '"90"');
debug('Huge value and small step');
shouldBe('stepUpExplicitBounds(0, 1e38, 1, 1e38, 999)', '"1e+38"');
shouldBe('stepDownExplicitBounds(0, 1e38, 1, 1e38, 999)', '"1e+38"');
debug('Fractional numbers');
shouldBe('stepUpExplicitBounds(null, null, 0.33333333333333333, 0, 3)', '"1"');
shouldBe('stepUpExplicitBounds(null, null, 0.1, 1)', '"1.1"');
shouldBe('stepUpExplicitBounds(null, null, 0.1, 1, 8)', '"1.8"');
shouldBe('stepUpExplicitBounds(null, null, 0.1, 1, 10)', '"2"');
shouldBe('stepUpExplicitBounds(0, 1, 0.003921568627450980, 0, 255)', '"1"');
shouldBe('stepDownExplicitBounds(null, null, 0.1, 1, 8)', '"0.2"');
shouldBe('stepDownExplicitBounds(null, null, 0.1, 1)', '"0.9"');

debug('');
</script>
<script src="../../../resources/js-test-post.js"></script>
</body>
</html>