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gaia/apps/clock/test/marionette/lib/picker.js

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+'use strict';
+/* global KeyEvent */
+
+var $ = require('./mquery');
+
+exports.getSpinnerValue = function(el) {
+  el = $(el);
+  var offsetTop = /translateY\(-?(\d+)/.exec(el.attr('style'))[1];
+  var pickerItems = el.find('.picker-unit');
+  var itemHeight = pickerItems[0].size().height;
+  var index = Math.floor(parseInt(offsetTop, 10) / itemHeight);
+  return parseInt(pickerItems[index].text(), 10);
+};
+
+exports.setSpinnerValue = function(el, value) {
+  el = $(el);
+  var currentValue = exports.getSpinnerValue(el);
+  var targetValue = parseInt(value, 10);
+  var delta = targetValue - currentValue;
+
+  el.parent().scriptWith(function(el, delta) {
+    var count = Math.abs(delta);
+    for (var i = 0; i < count; i++) {
+      var evt = new CustomEvent('keypress');
+      evt.keyCode = delta > 0 ? KeyEvent.DOM_VK_DOWN : KeyEvent.DOM_VK_UP;
+      el.dispatchEvent(evt);
+    }
+  }, [delta]);
+
+  exports.waitForSpinStop(el);
+};
+
+exports.waitForSpinStop = function(el) {
+  var currentY, lastY;
+  $.client.waitFor(function() {
+    lastY = currentY;
+    currentY = el.location().y;
+    return currentY === lastY;
+  }, { interval: 200 });
+};