Added Maximum and Minimum Dates

MDatePickerView/ColDateCell.swift

@@ -9,13 +9,21 @@
 import UIKit
 
 class ColMonthCell: ColCell {
+    let allMonths = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]
+
+    lazy var month : [String] = {
+        // for future uses
+        if self.to > 0 {
+            return Array(self.allMonths[...self.to])
+        } else {
+            return self.allMonths
+        }
+    }()
 
-    let month = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]
     var value = 0
 
-
     override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
-        return 12
+        return month.count
     }
 
     override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
@@ -43,7 +51,7 @@ class ColMonthCell: ColCell {
             }
         }
         Col.scrollToItem(at: [0,(Selected[1]) - 1], at: .centeredHorizontally, animated: true)
-        
+
     }
 
     override func selectDate(_ T : Int) {
@@ -63,6 +71,11 @@ class ColDayCell: ColCell {
             let range = (calendar as NSCalendar?)?.range(of: NSCalendar.Unit.day, in: NSCalendar.Unit.month, for: time.date ?? Date())
             day = range?.length ?? 30
 
+            // for future use
+            if self.to > 0 {
+                day = to
+            }
+
             let week = DateComponents(calendar: Calendar.current, year: Selected[0], month: Selected[1],day: 1)
             let comps = (calendar as NSCalendar?)?.components(NSCalendar.Unit.weekday, from: week.date ?? Date())
             if let Comps = comps?.weekday {
@@ -74,6 +87,7 @@ class ColDayCell: ColCell {
                 Col.scrollToItem(at: [0,day - 1], at: .centeredHorizontally, animated: true)
                 return
             }
+
             Col.reloadData()
         }
     }

MDatePickerView/MDatePickerView.swift

@@ -18,10 +18,12 @@ public class MDatePickerView : UIView {
 
     public var Color : UIColor = UIColor(red: 255/255, green: 97/255, blue: 82/255, alpha: 1)
 
-    public var from : Int = 1980
-
-    public var to : Int = Calendar.current.component(.year, from: Date())
+//    public var from : Int = 1980
+//    public var to : Int = Calendar.current.component(.year, from: Date())
 
+    public var maxDate = Date()
+    public var minDate : Date = Date(timeIntervalSince1970: 0)
+
     public var cornerRadius : CGFloat = 18 {
         didSet{
             Col.layer.cornerRadius = cornerRadius
@@ -30,7 +32,17 @@ public class MDatePickerView : UIView {
 
     public var selectDate : Date? {
         didSet{
-            if let select = selectDate{
+            if let selected = selectDate {
+                var select = selected
+                if select > maxDate {
+                    select = maxDate
+                    self.layoutSubviews()
+                }
+                if select < minDate {
+                    select = minDate
+                    self.layoutSubviews()
+                }
+
                 Y = Calendar.current.component(.year, from: select)
                 D = Calendar.current.component(.day, from: select)
                 M = Calendar.current.component(.month, from: select)
@@ -74,10 +86,10 @@ public class MDatePickerView : UIView {
 
         addSubview(Col)
         NSLayoutConstraint.activate([
-                    Col.topAnchor.constraint(equalTo: topAnchor, constant: 0),
-                    Col.bottomAnchor.constraint(equalTo: bottomAnchor, constant: 0),
-                    Col.leftAnchor.constraint(equalTo: leftAnchor, constant: 0),
-                    Col.rightAnchor.constraint(equalTo: rightAnchor, constant: 0)
+            Col.topAnchor.constraint(equalTo: topAnchor, constant: 0),
+            Col.bottomAnchor.constraint(equalTo: bottomAnchor, constant: 0),
+            Col.leftAnchor.constraint(equalTo: leftAnchor, constant: 0),
+            Col.rightAnchor.constraint(equalTo: rightAnchor, constant: 0)
         ])
 
     }
@@ -124,8 +136,8 @@ extension MDatePickerView : UICollectionViewDelegate,UICollectionViewDataSource,
             cell = Col.dequeueReusableCell(withReuseIdentifier: ColDayCellID, for: indexPath) as! ColDayCell
         case 2:
             cell = Col.dequeueReusableCell(withReuseIdentifier: ColYearCellID, for: indexPath) as! ColYearCell
-            cell?.from = from
-            cell?.to = to
+            cell?.from = Calendar.current.component(.year, from: minDate)
+            cell?.to = Calendar.current.component(.year, from: maxDate)
         default:
             break
         }
@@ -158,13 +170,28 @@ extension MDatePickerView : ColCellDelegate {
         case .Year(select: let year, range: _):
             Y = year
         }
-
         let dateComponents = DateComponents(calendar: Calendar.current, year: Y, month: M, day: D)
         if let date = dateComponents.date {
-            delegate?.mdatePickerView(selectDate: date)
+            var newDate = date
+            if newDate > maxDate {
+                newDate = maxDate
+                setToDate(date: newDate)
+            }
+            if newDate < minDate {
+                newDate = minDate
+                setToDate(date: newDate)
+            }
+            delegate?.mdatePickerView(selectDate: newDate)
         }
 
-       scrollToitem()
+        scrollToitem()
+    }
+
+    private func setToDate(date: Date) {
+        Y = Calendar.current.component(.year, from: date)
+        D = Calendar.current.component(.day, from: date)
+        M = Calendar.current.component(.month, from: date)
+        self.layoutSubviews()
     }
 
 }

MDatePickerView/Utils/ColCell.swift

@@ -125,9 +125,13 @@ extension ColCell : UICollectionViewDelegate,UICollectionViewDataSource,UICollec
         offset = CGPoint(x: roundedIndex * cellwidth - scrollView.contentInset.left, y: -scrollView.contentInset.top)
         targetContentOffset.pointee = offset
 
-        selectDate(Int(roundedIndex + 1))
+        DispatchQueue.main.asyncAfter(deadline: .now() + 1.2) {
+            self.selectDate(Int(roundedIndex + 1))
+        }
+
     }
 
+
     @objc func selectDate(_ T : Int) { }
 }
 

MDatePickerViewDemo/ViewController.swift

@@ -17,8 +17,8 @@ class ViewController: UIViewController {
         mdate.Color = UIColor(red: 0/255, green: 178/255, blue: 113/255, alpha: 1)
         mdate.cornerRadius = 14
         mdate.translatesAutoresizingMaskIntoConstraints = false
-        mdate.from = 1920
-        mdate.to = 2050
+        mdate.minDate = DateComponents(calendar: Calendar.current, year: 2018, month: 3).date!
+        mdate.maxDate = DateComponents(calendar: Calendar.current, year: 2020, month: 9).date!
         return mdate
     }()
 

README.md

@@ -10,7 +10,7 @@
 <a href="https://travis-ci.org/kciter/GlitchLabel"><img alt="Build Status" src="https://travis-ci.org/kciter/GlitchLabel.svg?branch=master"></a></p>
 </div>
 
-## Requirements 
+## Requirements
 - iOS 9.0
 - Xcode 9
 - Swift 4.0
@@ -36,8 +36,8 @@ lazy var MDate : MDatePickerView = {
         let mdate = MDatePickerView()
         mdate.Color = .gray
         mdate.delegate = self
-        mdate.from = 1980
-        mdate.to = 2100
+        mdate.minDate = DateComponents(calendar: Calendar.current, year: 2018, month: 3).date!
+        mdate.maxDate = DateComponents(calendar: Calendar.current, year: 2020, month: 9).date!
         return mdate
     }()
 ```