added bootstrapdatepicker

Author: dmitry-kurmanov

src/bootstrapdatepicker.js

@@ -0,0 +1,75 @@
+function init(Survey) {
+    // $ = $ || window.$;
+     var widget = {
+         name: "bootstrapdatepicker",
+         title: "Date picker",
+         iconName: "icon-datepicker",
+         widgetIsLoaded: function () {
+             return !!$.fn.datepicker;
+         },
+         isFit: function (question) {
+             return question.getType() === "bootstrapdatepicker";
+         },
+         htmlTemplate:
+         "<input class='form-control widget-datepicker' type='text' style='width: 100%;'>",
+         activatedByChanged: function (activatedBy) {
+             Survey.JsonObject.metaData.addClass(
+                 "bootstrapdatepicker",
+                 [
+                     { name: "inputType", visible: false },
+                     { name: "inputFormat", visible: false },
+                     { name: "inputMask", visible: false }
+                 ],
+                 null,
+                 "text"
+             );
+             Survey.JsonObject.metaData.addProperty("bootstrapdatepicker", {
+                 name: "dateFormat"
+             });
+         },
+         afterRender: function (question, el) {
+             var $el = $(el).is(".widget-datepicker")
+                 ? $(el)
+                 : $(el).find(".widget-datepicker");
+ 
+             var pickerWidget = $(".widget-datepicker").datepicker({
+               enableOnReadonly: false
+             })
+                 .on("changeDate", function (e) {
+                     question.value = moment(e.date).format("DD/MM/YYYY");
+                     // `e` here contains the extra attributes
+               });
+ 
+             question.valueChangedCallback = function() {
+               $(".widget-datepicker").datepicker('update', moment(question.value, "DD/MM/YYYY").toDate());
+             }
+             question.valueChangedCallback();
+             question.readOnlyChangedCallback = function() {
+               if(question.isReadOnly) {
+                 $el.prop('readonly', true);
+               }
+               else {
+                 $el.removeAttr('readonly');
+               }
+             }
+             question.readOnlyChangedCallback();
+             
+         },
+         willUnmount: function (question, el) {
+             var $el = $(el).is(".widget-datepicker")
+                 ? $(el)
+                 : $(el).find(".widget-datepicker");
+             $el.datepicker("destroy");
+             question.readOnlyChangedCallback = undefined;
+             question.valueChangedCallback = undefined;
+         }
+     };
+ 
+     Survey.CustomWidgetCollection.Instance.addCustomWidget(widget, "customtype");
+ }
+ 
+ if (typeof Survey !== "undefined") {
+    init(Survey, window.$);
+ }
+ 
+ export default init;