/**
* @desc Slider Star.
* */
class SliderStar
{
constructor (cfg = {})
{
const surveyCSS = cfg.question.css;
this._CSS_CLASSES = {
// INPUT_TEXT: `${surveyCSS.text.root} slider-star-text-input`
INPUT_TEXT: `slider-star-text-input`
};
this._question = cfg.question;
this._DOM = cfg.el;
this._engagedInputIdx = undefined;
this._pdowns = {};
this._bindedHandlers =
{
_handleInput: this._handleInput.bind(this),
_handlePointerDown: this._handlePointerDown.bind(this),
_handlePointerUp: this._handlePointerUp.bind(this),
_handlePointerMove: this._handlePointerMove.bind(this)
};
this._init(this._question, this._DOM);
}
_markStarsActive (n, qIdx)
{
let stars = this._DOM.querySelectorAll(`.stars-container[data-idx="${qIdx}"] .star-slider-star-input`);
let i;
for (i = 0; i < stars.length; i++)
{
stars[i].classList.remove("active");
if (i <= n - 1)
{
stars[i].classList.add("active");
}
}
}
_handleIndividualValueUpdate (v, qIdx)
{
if (this._question.value === undefined)
{
this._question.value = {};
}
if (this._question.value[qIdx] !== v)
{
this._question.value[qIdx] = v;
this._DOM.querySelector(`.slider-star-text-input[name="${qIdx}"]`).value = v;
this._markStarsActive(v, qIdx);
// Triggering internal SurveyJS mechanism for value update.
this._question.value = this._question.value;
}
}
_handleInput (e)
{
let v = parseInt(e.currentTarget.value, 10) || 0;
v = Math.max(0, Math.min(this._question.starCount, v));
const qIdx = e.currentTarget.name;
this._handleIndividualValueUpdate(v, qIdx);
}
_handlePointerDown (e)
{
e.preventDefault();
this._engagedInputIdx = e.currentTarget.dataset.idx;
this._pdowns[this._engagedInputIdx] = true;
const starIdx = [].indexOf.call(e.target.parentElement.children, e.target);
this._handleIndividualValueUpdate(starIdx + 1, this._engagedInputIdx);
}
_handlePointerUp (e)
{
if (this._engagedInputIdx !== undefined)
{
this._pdowns[this._engagedInputIdx] = false;
}
this._engagedInputIdx = undefined;
}
_handlePointerMove (e)
{
if (this._pdowns[this._engagedInputIdx])
{
e.preventDefault();
const starIdx = [].indexOf.call(e.target.parentElement.children, e.target);
this._handleIndividualValueUpdate(starIdx + 1, this._engagedInputIdx);
}
}
_init (question, el)
{
let t = performance.now();
let starsHTML = new Array(question.starCount).fill(`<div class="star-slider-star-input">★</div>`).join("");
let html = "";
let i;
for (i = 0; i < question.choices.length; i++)
{
html +=
`<div class="star-slider-container">
<div class="star-slider-title">${question.choices[i].text}</div>
<div class="star-slider-inputs">
<div class="stars-container" data-idx="${question.choices[i].value}">${starsHTML}</div>
${question.showValue ?
`<input type="number" class="${this._CSS_CLASSES.INPUT_TEXT}" max="${question.starCount}" min="0" name="${question.choices[i].value}">` :
""}
</div>
</div>`;
}
el.insertAdjacentHTML("beforeend", html);
const inputDOMS = el.querySelectorAll(".slider-star-text-input");
const starsContainers = el.querySelectorAll(".stars-container");
// Amount of inputDOMS and starsCointainer is the same.
// Also iterating over starContainers since text inputs might be absent.
for (i = 0; i < starsContainers.length; i++)
{
inputDOMS[i].addEventListener("input", this._bindedHandlers._handleInput);
starsContainers[i].addEventListener("pointerdown", this._bindedHandlers._handlePointerDown);
starsContainers[i].addEventListener("pointermove", this._bindedHandlers._handlePointerMove);
}
window.addEventListener("pointerup", this._bindedHandlers._handlePointerUp);
}
}
export default function init (Survey) {
var widget = {
//the widget name. It should be unique and written in lowcase.
name: "sliderstar",
//the widget title. It is how it will appear on the toolbox of the SurveyJS Editor/Builder
title: "Slider Star",
//the name of the icon on the toolbox. We will leave it empty to use the standard one
iconName: "",
//If the widgets depends on third-party library(s) then here you may check if this library(s) is loaded
widgetIsLoaded: function () {
//return typeof $ == "function" && !!$.fn.select2; //return true if jQuery and select2 widget are loaded on the page
return true; //we do not require anything so we just return true.
},
//SurveyJS library calls this function for every question to check, if it should use this widget instead of default rendering/behavior
isFit: function (question) {
//we return true if the type of question is sliderstar
return question.getType() === 'sliderstar';
//the following code will activate the widget for a text question with inputType equals to date
//return question.getType() === 'text' && question.inputType === "date";
},
//Use this function to create a new class or add new properties or remove unneeded properties from your widget
//activatedBy tells how your widget has been activated by: property, type or customType
//property - it means that it will activated if a property of the existing question type is set to particular value, for example inputType = "date"
//type - you are changing the behaviour of entire question type. For example render radiogroup question differently, have a fancy radio buttons
//customType - you are creating a new type, like in our example "sliderstar"
activatedByChanged: function (activatedBy) {
//we do not need to check acticatedBy parameter, since we will use our widget for customType only
//We are creating a new class and derived it from text question type. It means that text model (properties and fuctions) will be available to us
Survey.JsonObject.metaData.addClass("sliderstar", [], null, "text");
//signaturepad is derived from "empty" class - basic question class
//Survey.JsonObject.metaData.addClass("signaturepad", [], null, "empty");
//Add new property(s)
//For more information go to https://surveyjs.io/Examples/Builder/?id=addproperties#content-docs
Survey.JsonObject.metaData.addProperties("sliderstar", [
{
name: "choices",
isArray: true,
default: []
},
{
name: "starCount",
default: 5
},
{
name: "showValue",
default: true
},
{
name: "starType",
default: "descrete"
}
]);
},
//If you want to use the default question rendering then set this property to true. We do not need any default rendering, we will use our our htmlTemplate
isDefaultRender: false,
//You should use it if your set the isDefaultRender to false
htmlTemplate: "<div></div>",
//The main function, rendering and two-way binding
afterRender: function (question, el) {
new SliderStar({ question, el });
// let containers = el.querySelectorAll(".srv-slider-container");
// let inputDOMS = el.querySelectorAll(".srv-slider");
// let sliderDisplayDOMS = el.querySelectorAll(".srv-slider-display");
// if (!(question.value instanceof Array))
// {
// question.value = new Array(inputDOMS.length);
// question.value.fill(0);
// }
// for (i = 0; i < inputDOMS.length; i++)
// {
// inputDOMS[i].min = question.minVal;
// inputDOMS[i].max = question.maxVal;
// inputDOMS[i].addEventListener("input", (e) => {
// let idx = parseInt(e.currentTarget.dataset.idx, 10);
// question.value[idx] = parseFloat(e.currentTarget.value);
// // using .value setter to trigger update properly.
// // otherwise on survey competion it returns array of nulls.
// question.value = question.value;
// onValueChangedCallback();
// });
// // Handle grid lines?
// }
// function positionSliderDisplay (v, min, max, displayDOM)
// {
// v = parseFloat(v);
// min = parseFloat(min);
// max = parseFloat(max);
// // Formula is (halfThumbWidth - v * (fullThumbWidth / 100)), taking into account that display has translate(-50%, 0).
// // Size of thumb is set in CSS.
// displayDOM.style.left = `calc(${(v - min) / (max - min) * 100}% + ${10 - v * 0.2}px)`
// }
// var onValueChangedCallback = function () {
// let i;
// let v;
// for (i = 0; i < question.choices.length; i++)
// {
// v = question.value[i] || 0;
// inputDOMS[i].value = v;
// sliderDisplayDOMS[i].innerText = v;
// positionSliderDisplay(v, question.minVal, question.maxVal, sliderDisplayDOMS[i]);
// }
// }
// var onReadOnlyChangedCallback = function() {
// let i;
// if (question.isReadOnly) {
// for (i = 0; i < question.choices.length; i++)
// {
// inputDOMS[i].setAttribute('disabled', 'disabled');
// }
// } else {
// for (i = 0; i < question.choices.length; i++)
// {
// inputDOMS[i].removeAttribute("disabled");
// }
// }
// };
// if question becomes readonly/enabled add/remove disabled attribute
// question.readOnlyChangedCallback = onReadOnlyChangedCallback;
// if the question value changed in the code, for example you have changed it in JavaScript
// question.valueChangedCallback = onValueChangedCallback;
// set initial value
// onValueChangedCallback();
// make elements disabled if needed
// onReadOnlyChangedCallback();
},
//Use it to destroy the widget. It is typically needed by jQuery widgets
willUnmount: function (question, el) {
//We do not need to clear anything in our simple example
//Here is the example to destroy the image picker
//var $el = $(el).find("select");
//$el.data('picker').destroy();
}
}
//Register our widget in singleton custom widget collection
Survey.CustomWidgetCollection.Instance.addCustomWidget(widget, "customtype");
}