├── EMPickerView_Date_Time.png
├── Examples
    ├── EMPickerViewExample.xcodeproj
    │   ├── project.xcworkspace
    │   │   └── contents.xcworkspacedata
    │   └── project.pbxproj
    └── EMPickerViewExample
    │   ├── Images.xcassets
    │       └── AppIcon.appiconset
    │       │   └── Contents.json
    │   ├── Info.plist
    │   ├── AppDelegate.swift
    │   ├── ViewController.swift
    │   └── Base.lproj
    │       ├── Main.storyboard
    │       └── LaunchScreen.xib
├── .gitignore
├── LICENSE
├── EMPickerView
    ├── EMPickerViewRow.swift
    ├── EMPickerViewProtocols.swift
    └── EMPickerView.swift
└── README.md


/EMPickerView_Date_Time.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/codeisjoy/EMPickerView/HEAD/EMPickerView_Date_Time.png


--------------------------------------------------------------------------------
/Examples/EMPickerViewExample.xcodeproj/project.xcworkspace/contents.xcworkspacedata:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <Workspace
3 |    version = "1.0">
4 |    <FileRef
5 |       location = "self:EMPickerViewExample.xcodeproj">
6 |    </FileRef>
7 | </Workspace>
8 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # Xcode
 2 | #
 3 | build/
 4 | *.pbxuser
 5 | !default.pbxuser
 6 | *.mode1v3
 7 | !default.mode1v3
 8 | *.mode2v3
 9 | !default.mode2v3
10 | *.perspectivev3
11 | !default.perspectivev3
12 | xcuserdata
13 | *.xccheckout
14 | *.moved-aside
15 | DerivedData
16 | *.hmap
17 | *.ipa
18 | *.xcuserstate
19 | 
20 | # CocoaPods
21 | #
22 | # We recommend against adding the Pods directory to your .gitignore. However
23 | # you should judge for yourself, the pros and cons are mentioned at:
24 | # http://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control
25 | #
26 | # Pods/
27 | 


--------------------------------------------------------------------------------
/Examples/EMPickerViewExample/Images.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "iphone",
 5 |       "size" : "29x29",
 6 |       "scale" : "2x"
 7 |     },
 8 |     {
 9 |       "idiom" : "iphone",
10 |       "size" : "29x29",
11 |       "scale" : "3x"
12 |     },
13 |     {
14 |       "idiom" : "iphone",
15 |       "size" : "40x40",
16 |       "scale" : "2x"
17 |     },
18 |     {
19 |       "idiom" : "iphone",
20 |       "size" : "40x40",
21 |       "scale" : "3x"
22 |     },
23 |     {
24 |       "idiom" : "iphone",
25 |       "size" : "60x60",
26 |       "scale" : "2x"
27 |     },
28 |     {
29 |       "idiom" : "iphone",
30 |       "size" : "60x60",
31 |       "scale" : "3x"
32 |     }
33 |   ],
34 |   "info" : {
35 |     "version" : 1,
36 |     "author" : "xcode"
37 |   }
38 | }


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | The MIT License (MIT)
 2 | 
 3 | Copyright (c) 2015 Emad A.
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 
23 | 


--------------------------------------------------------------------------------
/Examples/EMPickerViewExample/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>com.codeisjoy.$(PRODUCT_NAME:rfc1034identifier)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>APPL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleSignature</key>
20 | 	<string>????</string>
21 | 	<key>CFBundleVersion</key>
22 | 	<string>1</string>
23 | 	<key>LSRequiresIPhoneOS</key>
24 | 	<true/>
25 | 	<key>UILaunchStoryboardName</key>
26 | 	<string>LaunchScreen</string>
27 | 	<key>UIMainStoryboardFile</key>
28 | 	<string>Main</string>
29 | 	<key>UIRequiredDeviceCapabilities</key>
30 | 	<array>
31 | 		<string>armv7</string>
32 | 	</array>
33 | 	<key>UISupportedInterfaceOrientations</key>
34 | 	<array>
35 | 		<string>UIInterfaceOrientationPortrait</string>
36 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
37 | 		<string>UIInterfaceOrientationLandscapeRight</string>
38 | 	</array>
39 | </dict>
40 | </plist>
41 | 


--------------------------------------------------------------------------------
/EMPickerView/EMPickerViewRow.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  EMPickerViewRow.swift
 3 | //  EMPickerViewExample
 4 | //
 5 | //  Created by Emad A. on 7/02/2015.
 6 | //  Copyright (c) 2015 Emad A. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | class EMPickerViewRow: UITableViewCell {
12 | 
13 |     required init(coder aDecoder: NSCoder) {
14 |         super.init(coder: aDecoder)
15 |         initialize()
16 |     }
17 | 
18 |     override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
19 |         super.init(style: style, reuseIdentifier: reuseIdentifier)
20 |         initialize()
21 |     }
22 | 
23 |     override func setSelected(selected: Bool, animated: Bool) {
24 |         super.setSelected(selected, animated: animated)
25 | 
26 |         if let label = self.textLabel {
27 |             let textLabelAlpha: CGFloat = selected ? 1.0 : 0.5
28 |             UIView.animateWithDuration(0.25, animations: { label.alpha = textLabelAlpha })
29 |         }
30 |     }
31 | 
32 |     override func layoutSubviews() {
33 |         super.layoutSubviews()
34 | 
35 |         textLabel?.frame = textLabel?.superview?.bounds ?? CGRectZero
36 |     }
37 | 
38 |     private func initialize() {
39 |         selectionStyle = .None
40 |         backgroundColor = UIColor.clearColor()
41 |         if respondsToSelector(Selector("setLayoutMargins:")) {
42 |             layoutMargins = UIEdgeInsetsZero
43 |         }
44 |         if respondsToSelector(Selector("setSeparatorInset:")) {
45 |             separatorInset = UIEdgeInsetsZero
46 |         }
47 |     }
48 | }
49 | 


--------------------------------------------------------------------------------
/Examples/EMPickerViewExample/AppDelegate.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.swift
 3 | //  EMPickerViewExample
 4 | //
 5 | //  Created by Emad A. on 4/02/2015.
 6 | //  Copyright (c) 2015 Emad A. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | @UIApplicationMain
12 | class AppDelegate: UIResponder, UIApplicationDelegate {
13 | 
14 |     var window: UIWindow?
15 | 
16 | 
17 |     func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
18 |         // Override point for customization after application launch.
19 |         return true
20 |     }
21 | 
22 |     func applicationWillResignActive(application: UIApplication) {
23 |         // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
24 |         // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
25 |     }
26 | 
27 |     func applicationDidEnterBackground(application: UIApplication) {
28 |         // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
29 |         // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
30 |     }
31 | 
32 |     func applicationWillEnterForeground(application: UIApplication) {
33 |         // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
34 |     }
35 | 
36 |     func applicationDidBecomeActive(application: UIApplication) {
37 |         // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
38 |     }
39 | 
40 |     func applicationWillTerminate(application: UIApplication) {
41 |         // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
42 |     }
43 | 
44 | 
45 | }
46 | 
47 | 


--------------------------------------------------------------------------------
/Examples/EMPickerViewExample/ViewController.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.swift
 3 | //  EMPickerViewExample
 4 | //
 5 | //  Created by Emad A. on 4/02/2015.
 6 | //  Copyright (c) 2015 Emad A. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | class ViewController: UIViewController {
12 | 
13 |     @IBOutlet var pv:EMPickerView?
14 | 
15 |     override func viewDidLoad() {
16 |         super.viewDidLoad()
17 | 
18 |         pv?.delegate = self;
19 |         pv?.dataSource = self;
20 | 
21 |         view.addSubview(pv!)
22 | 
23 |         pv?.selectRowAtIndex(3, component: 0, section: 0, animated: false)
24 |         pv?.selectRowAtIndex(4, component: 1, section: 0, animated: false)
25 |         pv?.selectRowAtIndex(1, component: 2, section: 0, animated: false)
26 |     }
27 | 
28 |     override func didReceiveMemoryWarning() {
29 |         super.didReceiveMemoryWarning()
30 |         // Dispose of any resources that can be recreated.
31 |     }
32 | }
33 | 
34 | extension ViewController: EMPickerViewDataSource {
35 | 
36 |     func numberOfSectionsInPickerView(pickerView: EMPickerView) -> Int {
37 |         return 3
38 |     }
39 | 
40 |     func pickerView(pickerView: EMPickerView, numberOfComponentsInSection section: Int) -> Int {
41 |         return section == 0 ? 3 : 1
42 |     }
43 | 
44 |     func pickerView(pickerView: EMPickerView, numberOfRowsInComponent component: Int, section: Int) -> Int {
45 |         return component > 1 ? 2 : 10
46 |     }
47 | }
48 | 
49 | extension ViewController: EMPickerViewDelegate {
50 | 
51 |     func pickerView(pickerView: EMPickerView, titleForRow row: Int, component: Int, section: Int) -> String {
52 |         return "\(section):\(component):\(row)"
53 |     }
54 |     
55 |     func pickerView(pickerView: EMPickerView, attributtedTitleForRow row: Int, component: Int, section: Int) -> NSAttributedString? {
56 |         var text: NSMutableAttributedString = NSMutableAttributedString(string: "\(section):\(component):\(row)")
57 |         text.addAttribute(NSFontAttributeName, value: UIFont(name: "Avenir-Medium", size: 16)!, range: NSMakeRange(0, text.length))
58 | 
59 |         if (section == 0 && component == 1) {
60 |             let paragraphStyle: NSMutableParagraphStyle = NSMutableParagraphStyle()
61 |             paragraphStyle.alignment = .Left
62 | 
63 |             text.addAttribute(NSParagraphStyleAttributeName, value: paragraphStyle, range: NSMakeRange(0, text.length))
64 |         }
65 | 
66 |         return text
67 |     }
68 | 
69 |     func widthFractionForSectionsInPickerView(pickerView: EMPickerView) -> [CGFloat] {
70 |         return [0.6, 0.2, 0.2]
71 |     }
72 | 
73 |     func pickerView(pickerView: EMPickerView, widthForComponentsInSection section: Int) -> [CGFloat]? {
74 |         if section == 0 {
75 |             return [0.3, 0.4, 0.3]
76 |         }
77 |         
78 |         return nil
79 |     }
80 | 
81 |     func pickerView(pickerView: EMPickerView, didSelectRowAtIndex row: Int, component: Int, section: Int) {
82 |         println("section:\(section) :: component:\(component) :: row:\(pickerView.selectedRow(component: component, section: section))")
83 |     }
84 | }


--------------------------------------------------------------------------------
/EMPickerView/EMPickerViewProtocols.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  EMPickerViewDataSource.swift
 3 | //  EMPickerViewExample
 4 | //
 5 | //  Created by Emad A. on 4/02/2015.
 6 | //  Copyright (c) 2015 Emad A. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | import Foundation
11 | 
12 | // MARK: - EMPickerViewDataSource
13 | // MARK: -
14 | 
15 | @objc protocol EMPickerViewDataSource {
16 | 
17 |     // Called by the picker view when it needs the number of section. (optional)
18 |     // If it is not defined default value 1 will be returned.
19 |     optional func numberOfSectionsInPickerView(pickerView: EMPickerView) -> Int
20 | 
21 |     // Called by the picker view when it needs the number of components for a specific section. (required)
22 |     func pickerView(pickerView: EMPickerView, numberOfComponentsInSection section: Int) -> Int
23 | 
24 |     // Called by the picker view when it needs the number of rows for a specific component of a specific section. (required)
25 |     func pickerView(pickerView: EMPickerView, numberOfRowsInComponent component: Int, section: Int) -> Int
26 | }
27 | 
28 | // MARK: - EMPickerViewDelegate
29 | // MARK: -
30 | 
31 | @objc protocol EMPickerViewDelegate {
32 | 
33 |     // Called by the picker view when it needs the section width to use for drawing the content.
34 |     // You should return an array of CGFloat between 0 and 1. Each number represents the section width portion at that index.
35 |     // If this method is not implemented all sections will have the same width through the picker view.
36 |     optional func widthFractionForSectionsInPickerView(pickerView: EMPickerView) -> [CGFloat]
37 | 
38 |     // Called by the picker view when it needs the components width to use for drawing the content.
39 |     // You should return an array of CGFloat between 0 and 1. Each number represents the section width portion at that index.
40 |     // If this method is not implemented all components will have the same width through its section.
41 |     optional func pickerView(pickerView: EMPickerView, widthFractionForComponentsInSection section: Int) -> [CGFloat]?
42 | 
43 |     // Called by the picker view when it needs the title to use for a given row in a given component and section.
44 |     func pickerView(pickerView: EMPickerView, titleForRow row: Int, component: Int, section: Int) -> String
45 | 
46 |     // Called by the picker view when it needs the styled title to use for a given row in a given component.
47 |     // If you implement both this method and the pickerView:titleForRow:component:section method, the picker view prefers the use of this method.
48 |     // However, if your implementation of this method returns nil, the picker view falls back to using the string returned by
49 |     // the pickerView:titleForRow:component:section method.
50 |     optional func pickerView(pickerView: EMPickerView, attributtedTitleForRow row: Int, component: Int, section: Int) -> NSAttributedString?
51 | 
52 |     // Called by the picker view when the user selects a row in a component and section and gives their index values.
53 |     optional func pickerView(pickerView: EMPickerView, didSelectRowAtIndex row: Int, component: Int, section: Int)
54 | 
55 | }


--------------------------------------------------------------------------------
/Examples/EMPickerViewExample/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="6254" systemVersion="14C109" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="vXZ-lx-hvc">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6247"/>
 5 |     </dependencies>
 6 |     <scenes>
 7 |         <!--View Controller-->
 8 |         <scene sceneID="ufC-wZ-h7g">
 9 |             <objects>
10 |                 <viewController id="vXZ-lx-hvc" customClass="ViewController" customModule="EMPickerViewExample" customModuleProvider="target" sceneMemberID="viewController">
11 |                     <layoutGuides>
12 |                         <viewControllerLayoutGuide type="top" id="jyV-Pf-zRb"/>
13 |                         <viewControllerLayoutGuide type="bottom" id="2fi-mo-0CV"/>
14 |                     </layoutGuides>
15 |                     <view key="view" contentMode="scaleToFill" id="kh9-bI-dsS">
16 |                         <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
17 |                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
18 |                         <subviews>
19 |                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="GyH-Zh-7aQ" customClass="EMPickerView" customModule="EMPickerViewExample" customModuleProvider="target">
20 |                                 <rect key="frame" x="0.0" y="126" width="600" height="190"/>
21 |                                 <color key="backgroundColor" red="0.84705882349999995" green="0.95294117649999999" blue="0.99215686270000003" alpha="1" colorSpace="calibratedRGB"/>
22 |                                 <constraints>
23 |                                     <constraint firstAttribute="height" constant="190" id="OlD-gI-fbp"/>
24 |                                 </constraints>
25 |                             </view>
26 |                         </subviews>
27 |                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
28 |                         <constraints>
29 |                             <constraint firstItem="GyH-Zh-7aQ" firstAttribute="top" secondItem="jyV-Pf-zRb" secondAttribute="bottom" constant="106" id="6bY-9n-eZA"/>
30 |                             <constraint firstAttribute="trailing" secondItem="GyH-Zh-7aQ" secondAttribute="trailing" id="80m-Z1-9jy"/>
31 |                             <constraint firstItem="GyH-Zh-7aQ" firstAttribute="width" secondItem="kh9-bI-dsS" secondAttribute="width" id="awk-jr-uQw"/>
32 |                             <constraint firstItem="GyH-Zh-7aQ" firstAttribute="leading" secondItem="kh9-bI-dsS" secondAttribute="leading" id="fh5-iD-gPu"/>
33 |                         </constraints>
34 |                     </view>
35 |                     <connections>
36 |                         <outlet property="pv" destination="GyH-Zh-7aQ" id="iCJ-m3-Jzg"/>
37 |                     </connections>
38 |                 </viewController>
39 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="x5A-6p-PRh" sceneMemberID="firstResponder"/>
40 |             </objects>
41 |         </scene>
42 |     </scenes>
43 | </document>
44 | 


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/Examples/EMPickerViewExample/Base.lproj/LaunchScreen.xib:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6214" systemVersion="14A314h" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6207"/>
 5 |         <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
 6 |     </dependencies>
 7 |     <objects>
 8 |         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
 9 |         <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
10 |         <view contentMode="scaleToFill" id="iN0-l3-epB">
11 |             <rect key="frame" x="0.0" y="0.0" width="480" height="480"/>
12 |             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
13 |             <subviews>
14 |                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright (c) 2015 Emad A. All rights reserved." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumFontSize="9" translatesAutoresizingMaskIntoConstraints="NO" id="8ie-xW-0ye">
15 |                     <rect key="frame" x="20" y="439" width="441" height="21"/>
16 |                     <fontDescription key="fontDescription" type="system" pointSize="17"/>
17 |                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
18 |                     <nil key="highlightedColor"/>
19 |                 </label>
20 |                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="EMPickerViewExample" textAlignment="center" lineBreakMode="middleTruncation" baselineAdjustment="alignBaselines" minimumFontSize="18" translatesAutoresizingMaskIntoConstraints="NO" id="kId-c2-rCX">
21 |                     <rect key="frame" x="20" y="140" width="441" height="43"/>
22 |                     <fontDescription key="fontDescription" type="boldSystem" pointSize="36"/>
23 |                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
24 |                     <nil key="highlightedColor"/>
25 |                 </label>
26 |             </subviews>
27 |             <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
28 |             <constraints>
29 |                 <constraint firstItem="kId-c2-rCX" firstAttribute="centerY" secondItem="iN0-l3-epB" secondAttribute="bottom" multiplier="1/3" constant="1" id="5cJ-9S-tgC"/>
30 |                 <constraint firstAttribute="centerX" secondItem="kId-c2-rCX" secondAttribute="centerX" id="Koa-jz-hwk"/>
31 |                 <constraint firstAttribute="bottom" secondItem="8ie-xW-0ye" secondAttribute="bottom" constant="20" id="Kzo-t9-V3l"/>
32 |                 <constraint firstItem="8ie-xW-0ye" firstAttribute="leading" secondItem="iN0-l3-epB" secondAttribute="leading" constant="20" symbolic="YES" id="MfP-vx-nX0"/>
33 |                 <constraint firstAttribute="centerX" secondItem="8ie-xW-0ye" secondAttribute="centerX" id="ZEH-qu-HZ9"/>
34 |                 <constraint firstItem="kId-c2-rCX" firstAttribute="leading" secondItem="iN0-l3-epB" secondAttribute="leading" constant="20" symbolic="YES" id="fvb-Df-36g"/>
35 |             </constraints>
36 |             <nil key="simulatedStatusBarMetrics"/>
37 |             <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
38 |             <point key="canvasLocation" x="548" y="455"/>
39 |         </view>
40 |     </objects>
41 | </document>
42 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # EMPickerView
 2 | A customisable picker view in Swift
 3 | 
 4 | ![EMPickerView Screenshot](https://github.com/codeisjoy/EMPickerView/blob/master/EMPickerView_Date_Time.png)
 5 | 
 6 | The user interface provided by a picker view consists of sections, components and rows.
 7 | * A section is a set of components which have the same indicator lines.
 8 | Each section has an indexed location (left to right) in the picke view.
 9 | * A component is a wheel, which has a series of items (rows) at indexed locations on the wheel.
10 | Each component, same as section, has an indexed location (left to right) in its section.
11 | Each row on a component could have a label, which is a simple or attributed string.
12 | 
13 | ## Usage
14 | It is a subclass of UIView so could be initialized either in Storyboard or by code.
15 | 
16 |     let pickerView: EMPickerView = EMPickerView(frame: <#CGRect#>)
17 | 
18 | Then set the `dataSource` and `delegate` properties.
19 | The methods of `EMPickerViewDataSource` and `EMPickerViewDelegate` will control how the picker view looks like.
20 | 
21 | #### Properties
22 | 
23 | - `componentsRowHeight`<br/>
24 | A float value indicating the height of the component rows
25 | <hr/>
26 | - `tintColor`<br/>
27 | The tint colour to apply to the selection indicator lines
28 | <hr/>
29 | - `dataSource`<br/>
30 | The data source for the picker view.
31 | 
32 | #### Methods
33 | 
34 | - `func selectRowAtIndex(index: Int, component: Int, section: Int, animated: Bool)`<br/>
35 | Selects a specific row and given component and section index.
36 | <hr/>
37 | - `func selectedRow(#component: Int, section: Int) -> Int`<br/>
38 | Gives the selected row index for given component and section index.
39 | 
40 | #### The data source `EMPickerViewDataSource`:
41 | 
42 | - `func pickerView(pickerView: EMPickerView, numberOfComponentsInSection section: Int) -> Int`<br/>
43 | Called by the picker view when it needs the number of components for a specific section. (required)
44 | <hr/>
45 | - `func pickerView(pickerView: EMPickerView, numberOfRowsInComponent component: Int, section: Int) -> Int`<br/>
46 | Called by the picker view when it needs the number of rows for a specific component of a specific section. (required)
47 | <hr/>
48 | - `optional func numberOfSectionsInPickerView(pickerView: EMPickerView) -> Int`<br/>
49 | Called by the picker view when it needs the number of section. (optional)<br/>
50 | If it is not defined default value 1 will be returned.
51 | 
52 | #### The delegate `EMPickerViewDelegate`:
53 | 
54 | - `optional func widthFractionForSectionsInPickerView(pickerView: EMPickerView) -> [CGFloat]`<br/>
55 | Called by the picker view when it needs the section width to use for drawing the content.<br/>
56 | You should return an array of `CGFloat` between `0` and `1`. Each number represents the section width portion at that index.<br/>
57 | If this method is not implemented all sections will have the same width through the picker view.
58 | <hr/>
59 | - `optional func pickerView(pickerView: EMPickerView, widthFractionForComponentsInSection section: Int) -> [CGFloat]?`<br/>
60 | Called by the picker view when it needs the components width to use for drawing the content.<br/>
61 | You should return an array of `CGFloat` between `0` and `1`. Each number represents the section width portion at that index.
62 | If this method is not implemented all components will have the same width through its section.
63 | <hr/>
64 | - `func pickerView(pickerView: EMPickerView, titleForRow row: Int, component: Int, section: Int) -> String`<br/>
65 | Called by the picker view when it needs the title to use for a given row in a given component and section.
66 | <hr/>
67 | - `optional func pickerView(pickerView: EMPickerView, attributtedTitleForRow row: Int, component: Int, section: Int) -> NSAttributedString?`<br/>
68 | Called by the picker view when it needs the styled title to use for a given row in a given component.<br/>
69 | If you implement both this method and the `pickerView:titleForRow:component:section` method, the picker view prefers the use of this method.
70 | However, if your implementation of this method returns nil, the picker view falls back to using the string returned by the pickerView:titleForRow:component:section method.
71 | <hr/>
72 | - `optional func pickerView(pickerView: EMPickerView, didSelectRowAtIndex row: Int, component: Int, section: Int)`<br/>
73 | Called by the picker view when the user selects a row in a component and section and gives their index values.
74 | 
75 | ## Install
76 | Simply add it as a submodule then import `EMPickerView` folder into your Xcode project.
77 | 
78 | 	git submodule add https://github.com/codeisjoy/EMPickerView.git <your lib directory>
79 | 
80 | ## Note
81 | This is the basic picker view. To have a date/time picker view the only thing that should be done is providing your date and time data through the `dataSource` methods and modifying the `delegate` methods to have your own picker view set.
82 | 


--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/EMPickerView/EMPickerView.swift:
--------------------------------------------------------------------------------
  1 | //
  2 | //  EMPickerView.swift
  3 | //  EMPickerViewExample
  4 | //
  5 | //  Created by Emad A. on 4/02/2015.
  6 | //  Copyright (c) 2015 Emad A. All rights reserved.
  7 | //
  8 | 
  9 | import UIKit
 10 | 
 11 | // MARK: - EMPickerView
 12 | // MARK: -
 13 | 
 14 | class EMPickerView: UIView {
 15 | 
 16 |     // MARK: - Constants
 17 | 
 18 |     private let sectionsGap: CGFloat = 8
 19 |     private let componentRowId: String = "EMPickerViewComponentRow"
 20 |     private let defaultTintColor: UIColor = UIColor(red:0.28, green:0.61, blue:1, alpha:1)
 21 | 
 22 |     // MARK: - Public Properties
 23 | 
 24 |     var componentsRowHeight: CGFloat = 50
 25 | 
 26 |     @IBOutlet var delegate: EMPickerViewDelegate?
 27 |     @IBOutlet var dataSource: EMPickerViewDataSource? {
 28 |         didSet {
 29 |             setNeedsValidateDataSource()
 30 |         }
 31 |     }
 32 | 
 33 |     override var tintColor: UIColor! {
 34 |         didSet {
 35 |             for s in 0...sections.count {
 36 |                 if let inds = indicators[s] {
 37 |                     inds.0.backgroundColor = self.tintColor
 38 |                     inds.1.backgroundColor = self.tintColor
 39 |                 }
 40 |             }
 41 |         }
 42 |     }
 43 | 
 44 |     // MARK: - Private Properties
 45 | 
 46 |     private var sections = [UIView]()
 47 |     private var components = [Int: [UITableView]]()
 48 |     private var indicators = [Int: (UIView, UIView)]()
 49 | 
 50 |     // MARK: - Overriden Methods
 51 | 
 52 |     required init(coder aDecoder: NSCoder) {
 53 |         super.init(coder: aDecoder)
 54 |         tintColor = defaultTintColor
 55 |     }
 56 | 
 57 |     override init(frame: CGRect) {
 58 |         super.init(frame: frame)
 59 |         tintColor = defaultTintColor
 60 |     }
 61 | 
 62 |     override func layoutSubviews() {
 63 |         super.layoutSubviews()
 64 | 
 65 |         // Setting the position of sections based on their index
 66 | 
 67 |         let uprightWidth: CGFloat = bounds.width - CGFloat(sections.count - 1) * sectionsGap
 68 | 
 69 |         var size: CGSize = CGSize(width: 0, height: bounds.height)
 70 |         let sws: [CGFloat]? = delegate?.widthFractionForSectionsInPickerView?(self)
 71 |         if sws == nil {
 72 |             size.width = ceil(uprightWidth / CGFloat(sections.count))
 73 |         }
 74 |         else {
 75 |             assert(sws!.count == sections.count, "The width of sections has been set improperly.")
 76 | 
 77 |             let ws = sws!.reduce(0) { $0 + $1 }
 78 |             assert(ws == 1, "The width of sections has been set improperly.")
 79 |         }
 80 | 
 81 |         for (s, section) in enumerate(sections) {
 82 |             var origin: CGPoint = CGPointMake(0, CGRectGetMinY(bounds))
 83 |             if sws != nil {
 84 |                 size.width = uprightWidth * sws![s]
 85 |                 if s == 0 {
 86 |                     origin.x = CGRectGetMinX(bounds)
 87 |                 }
 88 |                 else {
 89 |                     let previous = sections[s - 1]
 90 |                     origin.x = CGRectGetMaxX(previous.frame) + sectionsGap
 91 |                 }
 92 |             }
 93 |             else {
 94 |                 origin.x = CGFloat(s) * (size.width + sectionsGap)
 95 |             }
 96 |             section.frame = CGRect(origin: origin, size: size)
 97 | 
 98 |             // Setting the position of components of this section based on their index
 99 |             if let componentsForSection = components[s] {
100 |                 var size: CGSize = CGSizeMake(0, section.bounds.height)
101 |                 let cws: [CGFloat]? = delegate?.pickerView?(self, widthFractionForComponentsInSection: s)
102 |                 if cws == nil {
103 |                     size.width = ceil(section.bounds.width / CGFloat(componentsForSection.count))
104 |                 }
105 |                 else {
106 |                     assert(cws!.count == componentsForSection.count, "The width of components for section \(s) has been set improperly.")
107 | 
108 |                     let ws = cws!.reduce(0) { $0 + $1 }
109 |                     assert(ws == 1, "The width of components for section \(s) has been set improperly.")
110 |                 }
111 | 
112 |                 // Going through components of this section ...
113 |                 for (c, component) in enumerate(componentsForSection) {
114 |                     var origin: CGPoint = CGPointMake(CGFloat(c) * size.width, CGRectGetMinY(section.bounds))
115 |                     if cws != nil {
116 |                         size.width = section.bounds.width * cws![c]
117 |                         if c == 0 {
118 |                             origin.x = CGRectGetMinX(section.bounds)
119 |                         }
120 |                         else {
121 |                             let previous = componentsForSection[c - 1]
122 |                             origin.x = CGRectGetMaxX(previous.frame)
123 |                         }
124 |                     }
125 |                     component.frame = CGRect(origin: origin, size: size)
126 |                     component.contentInset = UIEdgeInsetsMake(
127 |                         (section.bounds.height - componentsRowHeight) / 2, 0,
128 |                         (section.bounds.height - componentsRowHeight) / 2, 0);
129 | 
130 |                     var r: Int = 0;
131 |                     if let selectedIndexPath = component.indexPathForSelectedRow() {
132 |                         r = selectedIndexPath.row;
133 |                     }
134 |                     selectRowAtIndex(r, component: c, section: s, animated: false);
135 |                 }
136 |             }
137 | 
138 |             // Setting the position of indicators of this section based on their index
139 |             // Index 0 is for top and 1 is for bottom.
140 |             if let indicatorsForSection = indicators[s] {
141 |                 indicatorsForSection.0.frame = CGRectMake(
142 |                     CGRectGetMinX(section.bounds),
143 |                     section.center.y - componentsRowHeight / 2,
144 |                     section.bounds.width,
145 |                     2)
146 |                 indicatorsForSection.1.frame = CGRectMake(
147 |                     CGRectGetMinX(section.bounds),
148 |                     section.center.y + componentsRowHeight / 2 - 2,
149 |                     section.bounds.width,
150 |                     2)
151 |             }
152 |         }
153 |     }
154 | 
155 |     // MARK: - Public Methods
156 | 
157 |     func selectRowAtIndex(index: Int, component: Int, section: Int, animated: Bool) {
158 |         let componentsAtSection: [UIView]? = components[section]
159 |         if componentsAtSection == nil || componentsAtSection?.count < 1 {
160 |             return
161 |         }
162 |         
163 |         if let tableView = componentsAtSection![component] as? UITableView {
164 |             tableView.selectRowAtIndexPath(NSIndexPath(forRow: index, inSection: 0), animated: animated, scrollPosition: .None)
165 |             tableView.scrollToNearestSelectedRowAtScrollPosition(.None, animated: animated)
166 |         }
167 | 
168 |         self.delegate?.pickerView?(self, didSelectRowAtIndex: index, component: component, section: section)
169 |     }
170 | 
171 |     func selectedRow(#component: Int, section: Int) -> Int {
172 |         if let componentsOfSection = components[section] where componentsOfSection.count > component {
173 |             let componentView: UITableView = componentsOfSection[component]
174 |             return componentView.indexPathForSelectedRow()?.row ?? NSNotFound
175 |         }
176 | 
177 |         return NSNotFound
178 |     }
179 | 
180 |     // MARK: - Private Methods
181 | 
182 |     private func setNeedsValidateDataSource() {
183 |         // Deallocating current sections view
184 |         for sec: UIView in sections {
185 |             sec.removeFromSuperview()
186 |         }
187 |         sections.removeAll(keepCapacity: false)
188 | 
189 |         // Initializing new sections and keeping a refrence of them for further uses
190 |         let numberOfSections: Int = dataSource?.numberOfSectionsInPickerView?(self) ?? 1
191 |         for var index: Int = 0; index < numberOfSections; index++ {
192 |             let section: UIView = UIView()
193 |             section.clipsToBounds = true
194 | 
195 |             addSubview(section)
196 |             sections.append(section)
197 |             
198 |             initComponents(forSection: index)
199 |             initIndicators(forSection: index)
200 |         }
201 |     }
202 | 
203 |     private func initComponents(forSection section: Int) {
204 |         // Deallocating current components view for each section
205 |         if let componentsForSection = components[section] {
206 |             for comp: UIView in componentsForSection {
207 |                 comp.removeFromSuperview()
208 |             }
209 |             components.removeValueForKey(section)
210 |         }
211 | 
212 |         // Initializing new components for given section index and keeping a reference of them for further uses
213 |         var componentsForSection = [UITableView]()
214 |         let sectionView: UIView = sections[section]
215 | 
216 |         let numberOfComponents: Int = dataSource?.pickerView(self, numberOfComponentsInSection: section) ?? 0
217 |         for var index: Int = 0; index < numberOfComponents; index++ {
218 |             let component: UITableView = UITableView()
219 |             component.registerClass(EMPickerViewRow.self, forCellReuseIdentifier: componentRowId)
220 |             component.showsHorizontalScrollIndicator = false
221 |             component.showsVerticalScrollIndicator = false
222 |             component.backgroundColor = UIColor.clearColor()
223 |             component.separatorStyle = .None
224 |             component.dataSource = self
225 |             component.delegate = self
226 | 
227 |             if component.respondsToSelector(Selector("setLayoutMargins:")) {
228 |                 component.layoutMargins = UIEdgeInsetsZero
229 |             }
230 |             if component.respondsToSelector(Selector("setSeparatorInset:")) {
231 |                 component.separatorInset = UIEdgeInsetsZero
232 |             }
233 | 
234 |             sectionView.addSubview(component)
235 |             componentsForSection.append(component)
236 |         }
237 |         components[section] = componentsForSection
238 |     }
239 | 
240 |     private func initIndicators(forSection section: Int) {
241 |         // Deallocating current indicators view for each section
242 |         if let indicatorsForSection = indicators[section] {
243 |             indicatorsForSection.0.removeFromSuperview()
244 |             indicatorsForSection.1.removeFromSuperview()
245 |             indicators.removeValueForKey(section)
246 |         }
247 | 
248 |         // Initializing new indicators for given section index and keeping a reference of them for further uses
249 |         var indicatorsForSection = (UIView(), UIView())
250 |         let sectionView: UIView = sections[section]
251 | 
252 |         indicatorsForSection.0.backgroundColor = tintColor
253 |         sectionView.addSubview(indicatorsForSection.0)
254 | 
255 |         indicatorsForSection.1.backgroundColor = tintColor
256 |         sectionView.addSubview(indicatorsForSection.1)
257 | 
258 |         indicators[section] = indicatorsForSection
259 |     }
260 | 
261 |     private func scrollComponent(component: UITableView, toContentOffset offset: CGPoint, animated: Bool) {
262 |         var point: CGPoint = offset
263 |         let frame:CGRect = CGRectMake(0, floor((component.bounds.height - componentsRowHeight) / 2), component.bounds.width, componentsRowHeight);
264 |         point.y = round((point.y + frame.origin.y) / frame.size.height) * frame.size.height;
265 | 
266 |         // Scrolling the component to proper place in order to bring the selection at center
267 |         component.setContentOffset(CGPointMake(0, point.y - frame.origin.y), animated: animated)
268 | 
269 |         let componentIndexPath = indexForComponentView(component)
270 |         let rowIndexPath: NSIndexPath? = component.indexPathForRowAtPoint(point)
271 |         if rowIndexPath != nil && componentIndexPath.component != NSNotFound && componentIndexPath.section != NSNotFound {
272 |             component.selectRowAtIndexPath(rowIndexPath, animated: false, scrollPosition: .None)
273 |             delegate?.pickerView?(self, didSelectRowAtIndex: rowIndexPath!.row, component: componentIndexPath.component, section: componentIndexPath.section)
274 |         }
275 |     }
276 | 
277 |     private func indexForComponentView(component: UITableView) -> (component: Int, section: Int) {
278 |         var componentIndex: Int = NSNotFound
279 |         var sectionIndex: Int = NSNotFound
280 |         var stop: Bool = false
281 | 
282 |         for (s, cms) in components {
283 |             for (c, cm) in enumerate(cms) {
284 |                 if component.isEqual(cm) {
285 |                     componentIndex = c
286 |                     sectionIndex = s
287 |                     stop = true
288 |                     break
289 |                 }
290 |             }
291 |             if stop { break }
292 |         }
293 | 
294 |         return (componentIndex, sectionIndex)
295 |     }
296 | }
297 | 
298 | // MARK: - UITableViewDataSource Methods
299 | // MARK: -
300 | 
301 | extension EMPickerView: UITableViewDataSource {
302 | 
303 |     func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
304 |         let index = indexForComponentView(tableView)
305 |         if dataSource != nil {
306 |             return dataSource!.pickerView(self, numberOfRowsInComponent: index.component, section: index.section)
307 |         }
308 |         return 0
309 |     }
310 | 
311 |     func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
312 |         var cell: UITableViewCell = tableView.dequeueReusableCellWithIdentifier(componentRowId) as! UITableViewCell
313 |         cell.textLabel?.textAlignment = .Center
314 | 
315 |         let index = indexForComponentView(tableView)
316 |         if index.component != NSNotFound && index.section != NSNotFound {
317 |             if let text = delegate?.pickerView?(self, attributtedTitleForRow: indexPath.row, component: index.component, section: index.section) {
318 |                 cell.textLabel?.attributedText = text
319 |             }
320 |             else {
321 |                 cell.textLabel?.text = delegate?.pickerView(self, titleForRow: indexPath.row, component: index.component, section: index.section)
322 |             }
323 |         }
324 | 
325 |         return cell
326 |     }
327 | }
328 | 
329 | // MARK: - UITableViewDelegate Methods
330 | // MARK: -
331 | 
332 | extension EMPickerView: UITableViewDelegate {
333 | 
334 |     func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
335 |         return componentsRowHeight
336 |     }
337 | 
338 |     func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
339 |         let index = indexForComponentView(tableView)
340 |         if index.component != NSNotFound && index.section != NSNotFound {
341 |             selectRowAtIndex(indexPath.row, component: index.component, section: index.section, animated: true)
342 |         }
343 |     }
344 | }
345 | 
346 | // MARK: - UIScrollViewDelegate Methods
347 | // MARK: -
348 | 
349 | extension EMPickerView: UIScrollViewDelegate {
350 | 
351 |     func scrollViewDidScroll(scrollView: UIScrollView) {
352 |         let component: UITableView = scrollView as! UITableView
353 | 
354 |         let center: CGPoint = component.superview!.convertPoint(component.center, toView: component)
355 |         let indexPathAtCenter: NSIndexPath? = component.indexPathForRowAtPoint(center)
356 | 
357 |         if let visibleIndexPaths = component.indexPathsForVisibleRows() as? [NSIndexPath] {
358 |             // Going through visible index paths and find the one which is at center
359 |             // All cells should not be selected but that one.
360 |             for indexPath:NSIndexPath in visibleIndexPaths {
361 |                 if let cell = component.cellForRowAtIndexPath(indexPath) {
362 |                     cell.setSelected(indexPath.isEqual(indexPathAtCenter), animated: true)
363 |                 }
364 |             }
365 |         }
366 |     }
367 | 
368 |     func scrollViewWillEndDragging(scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
369 |         // When dragging end with no further animation and scrolling, velocity.y == 0,
370 |         // component should scroll to the selected cell
371 |         if velocity.y == 0 {
372 |             scrollComponent(scrollView as! UITableView, toContentOffset: targetContentOffset.memory, animated: true)
373 |         }
374 |     }
375 | 
376 |     func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
377 |         // Scrolling to the selected cell
378 |         scrollComponent(scrollView as! UITableView, toContentOffset: scrollView.contentOffset, animated: true)
379 |     }
380 | }


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