should select date?

Example/MJCalendar/ViewController.swift

@@ -225,6 +225,10 @@ class ViewController: UIViewController, UITableViewDataSource, UITableViewDelega
     func calendar(_ calendarView: MJCalendarView, didSelectDate date: Date) {
         self.scrollTableViewToDate(date)
     }
+
+    func calendar(_ calendarView: MJCalendarView, shouldSelectDate date: Date) -> Bool {
+        return date == (Date() as NSDate).atStartOfDay()
+    }
 
     //MARK: Toolbar actions
     @IBAction func didTapMonth(_ sender: AnyObject) {

Example/Podfile.lock

@@ -1,6 +1,6 @@
 PODS:
   - HexColors (2.3.0)
-  - MJCalendar (0.3.0):
+  - MJCalendar (0.4.0):
     - NSDate-Escort (~> 1.5)
     - UIView+JMFrame
   - NSDate-Escort (1.7.0)
@@ -16,10 +16,10 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   HexColors: 6ad3947c3447a055a3aa8efa859def096351fe5f
-  MJCalendar: fded170474124dc14ae81868f7ffc69bc5438b6f
+  MJCalendar: a529b085b0b988ae7b493ce7c000946cc186bf0e
   NSDate-Escort: 3469fefab423c094108c2e864416b61b6ac0edbc
   UIView+JMFrame: a907974c9d34b1c300aef85ae2a1a5af746f2b8a
 
 PODFILE CHECKSUM: 4a8b5d26398ddbd90a4263c73faf04b15b5e7d20
 
-COCOAPODS: 1.1.1
+COCOAPODS: 1.2.0

Pod/Classes/MJCalendarView.swift

@@ -11,15 +11,22 @@ import NSDate_Escort
 import UIView_JMFrame
 
 public protocol MJCalendarViewDelegate: NSObjectProtocol {
+    func calendar(_ calendarView: MJCalendarView, shouldSelectDate date: Date) -> Bool
     func calendar(_ calendarView: MJCalendarView, didChangePeriod periodDate: Date, bySwipe: Bool)
     func calendar(_ calendarView: MJCalendarView, didSelectDate date: Date)
     func calendar(_ calendarView: MJCalendarView, backgroundForDate date: Date) -> UIColor?
     func calendar(_ calendarView: MJCalendarView, textColorForDate date: Date) -> UIColor?
 }
 
+public extension MJCalendarViewDelegate {
+    func calendar(_ calendarView: MJCalendarView, shouldSelectDate date: Date) -> Bool {
+        return true
+    }
+}
+
 open class MJCalendarView: UIView, UIScrollViewDelegate, MJComponentDelegate {
     open var configuration: MJConfiguration
-    var periods: [MJPeriodView]?
+    var periods: [MJPeriodView]? 
     var weekLabelsView: MJWeekLabelsView?
     var periodsContainerView: UIScrollView?
 
@@ -213,6 +220,7 @@ open class MJCalendarView: UIView, UIScrollViewDelegate, MJComponentDelegate {
     }
 
     open func selectDate(_ date: Date) {
+
         let validatedDate = dateInRange(date)
         if !self.isDateAlreadyShown(validatedDate) {
             let periodDate = self.startDate(validatedDate, withOtherMonth: false)
@@ -290,6 +298,11 @@ open class MJCalendarView: UIView, UIScrollViewDelegate, MJComponentDelegate {
     }
 
     func componentView(_ componentView: MJComponentView, didSelectDate date: Date) {
+
+        if let calendarDelegate = calendarDelegate, !calendarDelegate.calendar(self, shouldSelectDate: date) {
+            return
+        }
+
         self.selectDate(date)
         self.calendarDelegate?.calendar(self, didSelectDate: date)
     }