Calendar: fix issue when double click causes router back

Fixes #2383

Author: nolimits4web

src/core/components/calendar/calendar-class.js

@@ -57,7 +57,7 @@ class Calendar extends Framework7Class {
     function onHtmlClick(e) {
       const $targetEl = $(e.target);
       if (calendar.isPopover()) return;
-      if (!calendar.opened) return;
+      if (!calendar.opened || calendar.closing) return;
       if ($targetEl.closest('[class*="backdrop"]').length) return;
       if ($inputEl && $inputEl.length > 0) {
         if ($targetEl[0] !== $inputEl[0] && $targetEl.closest('.sheet-modal, .calendar-modal').length === 0) {
@@ -1126,7 +1126,9 @@ class Calendar extends Framework7Class {
   onOpen() {
     const calendar = this;
     const { initialized, $el, app, $inputEl, inline, value, params } = calendar;
+    calendar.closing = false;
     calendar.opened = true;
+    calendar.opening = true;
 
     // Init main events
     calendar.attachCalendarEvents();
@@ -1178,6 +1180,7 @@ class Calendar extends Framework7Class {
   }
   onOpened() {
     const calendar = this;
+    calendar.opening = false;
     if (calendar.$el) {
       calendar.$el.trigger('calendar:opened', calendar);
     }
@@ -1189,6 +1192,8 @@ class Calendar extends Framework7Class {
   onClose() {
     const calendar = this;
     const app = calendar.app;
+    calendar.opening = false;
+    calendar.closing = true;
 
     if (calendar.$inputEl && app.theme === 'md') {
       calendar.$inputEl.trigger('blur');
@@ -1208,6 +1213,7 @@ class Calendar extends Framework7Class {
   onClosed() {
     const calendar = this;
     calendar.opened = false;
+    calendar.closing = false;
 
     if (!calendar.inline) {
       Utils.nextTick(() => {