### Configure Podfile for JTAppleCalendar

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/installation/Installation.md

Example Podfile content for integrating JTAppleCalendar into a test project. It specifies the iOS platform and includes the JTAppleCalendar pod dependency. Ensure to uncomment the platform line if needed.

```ruby
# Uncomment the next line to define a global platform for your project

# platform :ios, '9.0'

target 'test' do
    use_frameworks!
    pod 'JTAppleCalendar'
end
```

--------------------------------

### Install Carthage Dependency Manager

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/installation/Installation.md

Installs the Carthage dependency manager using Homebrew. Carthage is a decentralized dependency manager for Cocoa projects. These commands first update Homebrew and then install Carthage.

```bash
brew update
brew install carthage
```

--------------------------------

### Update Carthage Dependencies

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/installation/Installation.md

Command to run after specifying dependencies in the Cartfile. It fetches the specified frameworks, builds them, and makes them available for integration into your Xcode project.

```bash
carthage update
```

--------------------------------

### Install CocoaPods Dependency Manager

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/installation/Installation.md

Installs the CocoaPods dependency manager using RubyGems. This is a prerequisite for using CocoaPods to integrate JTAppleCalendar.

```bash
gem install cocoapods
```

--------------------------------

### Install JTAppleCalendar via CocoaPods

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/installation/Installation.md

Command to execute in the terminal after updating the Podfile to install the JTAppleCalendar library into the Xcode project. This command fetches and integrates the specified pod.

```bash
pod install
```

--------------------------------

### Initialize Podfile for JTAppleCalendar Integration

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/installation/Installation.md

Generates a Podfile in the current directory, which is necessary for managing dependencies with CocoaPods. This command should be run in the root directory of your Xcode project.

```bash
pod init
```

--------------------------------

### Basic ViewController Setup for JTAppleCalendar

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/build-calendar/Build A Calendar From Scratch.md

A fundamental ViewController setup using UIKit and JTAppleCalendar. This serves as the base for integrating the calendar component. It includes the standard viewDidLoad method, which is a common entry point for initializing UI elements and data within a view controller.

```swift
import UIKit
import JTAppleCalendar

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
    }
}
```

--------------------------------

### Install JTAppleCalendar via CocoaPods

Source: https://github.com/patchthecode/jtapplecalendar/wiki/Installation

This snippet shows how to integrate the JTAppleCalendar library into an Xcode project using CocoaPods. It requires the CocoaPods dependency manager to be installed. The Podfile specifies the JTAppleCalendar version and the target platform.

```shell
gem install cocoapods
```

```ruby
source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '10.0'
use_frameworks!

target '<Your Target Name>' do
    pod 'JTAppleCalendar', '~>; 7.1'
end
```

```shell
pod install
```

--------------------------------

### Integrate JTAppleCalendar via CocoaPods

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/installation/Installation.md

Adds the JTAppleCalendar dependency to an Xcode project's Podfile. Requires CocoaPods version 1.1.0+ and specifies the platform and framework usage. After editing the Podfile, run 'pod install' to download and integrate the library.

```ruby
source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '10.0'
use_frameworks!

target '<Your Target Name>' do
    pod 'JTAppleCalendar', '~>; 7.1'
end
```

--------------------------------

### Specify JTAppleCalendar in Cartfile

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/installation/Installation.md

Declares the JTAppleCalendar repository and version constraint in the Cartfile for Carthage integration. This line tells Carthage which GitHub repository to fetch the library from.

```plaintext
github "patchthecode/JTAppleCalendar" ~> 7.1
```

--------------------------------

### ViewController Setup for JTAppleCalendarView Row Switching

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/switch-month-to-week-view/Switch between month-view and week-view.md

Sets up a `ViewController` with outlets for `JTAppleCalendarView` and its height constraint. It also introduces a `numberOfRows` variable to manage the calendar's row state.

```swift
class ViewController: UIViewController {
    @IBOutlet var calendarView: JTAppleCalendarView! 
    @IBOutlet weak var constraint: NSLayoutConstraint! 

    var numberOfRows = 6
}
```

--------------------------------

### JTAppleCalendar Data Source Configuration

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/build-calendar/Build A Calendar From Scratch.md

Implements the JTAppleCalendarViewDataSource protocol to configure the calendar's behavior. This snippet defines the start and end dates for the calendar using DateFormatter and returns ConfigurationParameters. Key parameters like startDate, endDate, numberOfRows, and calendar instance can be customized here.

```swift
extension ViewController: JTAppleCalendarViewDataSource {
    func configureCalendar(_ calendar: JTAppleCalendarView) -> ConfigurationParameters {
        let formatter = DateFormatter()
        formatter.dateFormat = "yyyy MM dd"
        let startDate = formatter.date(from: "2018 01 01")!
        let endDate = Date()
        return ConfigurationParameters(startDate: startDate, endDate: endDate)
    }
}
```

--------------------------------

### Setup Calendar View Outlet for Range Selection (Swift)

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/range-selection-styles/Range selection styles.md

This snippet shows how to declare an IBOutlet for JTAppleCalendarView in a ViewController. This is a prerequisite for connecting the calendar view from a Storyboard and enabling functionalities like range selection.

```swift
import UIKit
import JTAppleCalendar

class ViewController: UIViewController {
    @IBOutlet var calendarView: JTAppleCalendarView!
}
```

--------------------------------

### New Object Names in JTAppleCalendar v8.0.0

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/migration-guide/v8 Migration Guide.md

This snippet lists the renamed object names in JTAppleCalendar v8.0.0. These changes, such as renaming `JTApplecalendarView` to `JTACMonthView`, are part of the migration to support YearView. Ensure these class names are updated in your project, including Storyboards and XIBs.

```plaintext
JTApplecalendarView           --> JTACMonthView
JTAppleCalendarViewDelegate   --> JTACMonthViewDelegate
JTAppleCalendarViewDataSource --> JTACMonthViewDataSource
JTAppleDayCell                --> JTACMonthCell
JTAppleCollectionReusableView --> JTACMonthReusableView
```

--------------------------------

### Updated JTACMonthView Delegate Functions in Swift

Source: https://github.com/patchthecode/jtapplecalendar/wiki/8.0.0-MIGRATION-GUIDE

This snippet shows the renamed delegate functions for JTACMonthView in Swift. These changes were made to accommodate the new YearView functionality. Ensure these functions are updated in your project to avoid issues with event handling and UI updates.

```swift
func calendar(_ calendar: JTACMonthView, shouldSelectDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath) -> Bool { return true }
func calendar(_ calendar: JTACMonthView, shouldDeselectDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath) -> Bool { return true }
func calendar(_ calendar: JTACMonthView, didSelectDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath) {}
func calendar(_ calendar: JTACMonthView, didDeselectDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath) {}
func calendar(_ calendar: JTACMonthView, didHighlightDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath) {}
func calendar(_ calendar: JTACMonthView, didUnhighlightDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath) {}
func calendar(_ calendar: JTACMonthView, willScrollToDateSegmentWith visibleDates: DateSegmentInfo) {}
func calendar(_ calendar: JTACMonthView, didScrollToDateSegmentWith visibleDates: DateSegmentInfo) {}
func calendar(_ calendar: JTACMonthView, headerViewForDateRange range: (start: Date, end: Date), at indexPath: IndexPath) -> JTACMonthReusableView {}
func calendarDidScroll(_ calendar: JTACMonthView) {}
func calendarSizeForMonths(_ calendar: JTACMonthView?) -> MonthSize? { return nil }
func sizeOfDecorationView(indexPath: IndexPath) -> CGRect { return .zero }
func scrollDidEndDecelerating(for calendar: JTACMonthView) {}
```

--------------------------------

### Setup Pan Gesture for Drag to Select Range (Swift)

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/range-selection-styles/Range selection styles.md

This code sets up a UILongPressGestureRecognizer to initiate drag-to-select range functionality. It's added to the calendar view and configured with a minimum press duration to prevent accidental triggers.

```swift
class ViewController: UIViewController {

    @IBOutlet var calendarView: JTAppleCalendarView!
    let testCalendar = Calendar(identifier: .gregorian)

    override func viewDidLoad() {
        super.viewDidLoad()

        calendarView.allowsMultipleSelection = true
        calendarView.isRangeSelectionUsed = true

        let panGensture = UILongPressGestureRecognizer(target: self, action: #selector(didStartRangeSelecting(gesture:)))
        panGensture.minimumPressDuration = 0.5
        calendarView.addGestureRecognizer(panGensture)
    }
}
```

--------------------------------

### Control Date Selection with a Delegate Method (Swift)

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/common-elements/regular-selection/Regular Selection.md

Provides an example of the `calendar(_:shouldSelectDate:cell:cellState:)` delegate method. This function allows you to conditionally permit or deny date selection based on custom criteria, returning `true` to allow selection and `false` to prevent it.

```swift
func calendar(_ calendar: JTAppleCalendarView, shouldSelectDate date: Date, cell: JTAppleCell?, cellState: CellState) -> Bool {
    return true // Based on a criteria, return true or false
}
```

--------------------------------

### Define Custom JTAppleCalendar DateCell in Swift

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/adding-events/Adding Events.md

This Swift code defines a custom `DateCell` class that inherits from `JTAppleCell`. It includes outlets for a date label and a dot view, which will be used to indicate events on specific dates. This setup is essential for customizing the appearance and functionality of individual cells in the JTAppleCalendar.

```swift
import JTAppleCalendar
import UIKit

class DateCell: JTAppleCell {
    @IBOutlet var dateLabel: UILabel!
    @IBOutlet var dotView: UIView!
}
```

--------------------------------

### Renamed Delegate Functions for JTAppleCalendar MonthView

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/migration-guide/v8 Migration Guide.md

This snippet lists the renamed delegate function names in JTAppleCalendar v8.0.0. These changes were made to support the new YearView functionality, requiring a distinction between month and year views. Developers must update these function names in their implementations.

```swift
func calendar(_ calendar: JTACMonthView, shouldSelectDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath) -> Bool
func calendar(_ calendar: JTACMonthView, shouldDeselectDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath) -> Bool
func calendar(_ calendar: JTACMonthView, didSelectDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath)
func calendar(_ calendar: JTACMonthView, didDeselectDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath)
func calendar(_ calendar: JTACMonthView, didHighlightDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath)
func calendar(_ calendar: JTACMonthView, didUnhighlightDate date: Date, cell: JTACDayCell?, cellState: CellState, indexPath: IndexPath)
func calendar(_ calendar: JTACMonthView, willScrollToDateSegmentWith visibleDates: DateSegmentInfo)
func calendar(_ calendar: JTACMonthView, didScrollToDateSegmentWith visibleDates: DateSegmentInfo)
func calendar(_ calendar: JTACMonthView, headerViewForDateRange range: (start: Date, end: Date), at indexPath: IndexPath) -> JTACMonthReusableView
func calendarDidScroll(_ calendar: JTACMonthView)
func calendarSizeForMonths(_ calendar: JTACMonthView?) -> MonthSize?
func sizeOfDecorationView(indexPath: IndexPath) -> CGRect
func scrollDidEndDecelerating(for calendar: JTACMonthView)
```

--------------------------------

### Configure Generation of InDates and OutDates

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/common-elements/configure-in-out-month-dates/Configuring inDates monthDates outDates.md

This Swift function configures the generation of in-dates and out-dates for the JTAppleCalendar view. It sets the start and end dates for the calendar and specifies how in-dates and out-dates should be generated using '.forAllMonths' and '.tillEndOfGrid' respectively. This is crucial for controlling the overall layout and content of the calendar grid.

```swift
func configureCalendar(_ calendar: JTAppleCalendarView) -> ConfigurationParameters {
    let formatter = DateFormatter()
    formatter.dateFormat = "yyyy MM dd"

    let startDate = formatter.date(from: "2018 01 01")!
    let endDate = Date()
    return ConfigurationParameters(startDate: startDate,
                                    endDate: endDate,
                                    generateInDates: .forAllMonths,
                                    generateOutDates: .tillEndOfGrid)
}
```

--------------------------------

### Configure JTAppleCalendar View Controller in Swift

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/adding-events/Adding Events.md

This Swift code configures the main `ViewController` for the JTAppleCalendar. It sets up a dictionary (`calendarDataSource`) to store event data, a `DateFormatter` for consistent date string formatting, and connects the calendar view. The `configureCalendar` function initializes the calendar's date range, and `populateDataSource` fills it with sample event data. Finally, `viewDidLoad` sets scrolling properties and initiates the data population.

```swift
class ViewController: UIViewController {
    @IBOutlet var calendarView: JTAppleCalendarView!

    var calendarDataSource: [String:String] = [:]
    var formatter: DateFormatter {
        let formatter = DateFormatter()
        formatter.dateFormat = "dd-MMM-yyyy"
        return formatter
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        calendarView.scrollDirection = .horizontal
        calendarView.scrollingMode   = .stopAtEachCalendarFrame
        calendarView.showsHorizontalScrollIndicator = false

        populateDataSource()
    }

    func populateDataSource() {
        // You can get the data from a server.
        // Then convert that data into a form that can be used by the calendar.
        calendarDataSource = [
            "07-Jan-2018": "SomeData",
            "15-Jan-2018": "SomeMoreData",
            "15-Feb-2018": "MoreData",
            "21-Feb-2018": "onlyData",
        ]
        // update the calendar
        calendarView.reloadData()
    }
}

extension ViewController: JTAppleCalendarViewDataSource {
    func configureCalendar(_ calendar: JTAppleCalendarView) -> ConfigurationParameters {
        let startDate = formatter.date(from: "01-jan-2018")!
        let endDate = Date()
        return ConfigurationParameters(startDate: startDate, endDate: endDate)
    }
}

func configureCell(view: JTAppleCell?, cellState: CellState) {
    guard let cell = view as? DateCell  else { return }
    cell.dateLabel.text = cellState.text
    handleCellTextColor(cell: cell, cellState: cellState)
    handleCellEvents(cell: cell, cellState: cellState)
}

func handleCellEvents(cell: DateCell, cellState: CellState) {
    let dateString = formatter.string(from: cellState.date)
    if calendarDataSource[dateString] == nil {
        cell.dotView.isHidden = true
    } else {
        cell.dotView.isHidden = false
    }
}
```

--------------------------------

### Implement JTAppleCalendar Header Delegate Methods

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/headers/Headers.md

These delegate methods are crucial for providing the header views to the JTAppleCalendar. The `calendar(_:headerViewForDateRange:at:)` method dequeues and configures a reusable header view with the month's title, while `calendarSizeForMonths(_:)` defines the default size for month headers.

```swift
func calendar(_ calendar: JTAppleCalendarView, headerViewForDateRange range: (start: Date, end: Date), at indexPath: IndexPath) -> JTAppleCollectionReusableView {
    let formatter = DateFormatter() // Declare this outside, to avoid instancing this heavy class multiple times.
    formatter.dateFormat = "MMM"
    let header = calendar.dequeueReusableJTAppleSupplementaryView(withReuseIdentifier: "DateHeader", for: indexPath) as! DateHeader
    header.monthTitle.text = formatter.string(from: range.start)
    return header
}

func calendarSizeForMonths(_ calendar: JTAppleCalendarView?) -> MonthSize? {
    return MonthSize(defaultSize: 50)
}
```

--------------------------------

### JTAppleCalendar Delegate for Cell Display

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/build-calendar/Build A Calendar From Scratch.md

Implements the JTAppleCalendarViewDelegate methods for displaying and updating calendar cells. The `calendar(_:cellForItemAt:)` method dequeues and configures the custom `DateCell`, setting its label text. The `calendar(_:willDisplay:forItemAt:)` method also updates the cell's label text, ensuring consistency.

```swift
extension ViewController: JTAppleCalendarViewDelegate {
    func calendar(_ calendar: JTAppleCalendarView, cellForItemAt date: Date, cellState: CellState, indexPath: IndexPath) -> JTAppleCell {
        let cell = calendar.dequeueReusableJTAppleCell(withReuseIdentifier: "dateCell", for: indexPath) as! DateCell
        cell.dateLabel.text = cellState.text
        return cell
    }

    func calendar(_ calendar: JTAppleCalendarView, willDisplay cell: JTAppleCell, forItemAt date: Date, cellState: CellState, indexPath: IndexPath) {
        let cell = cell as! DateCell
        cell.dateLabel.text = cellState.text
    }
}
```

--------------------------------

### Configure JTAppleCalendarView for 1-Row Calendar

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/switch-month-to-week-view/Switch between month-view and week-view.md

Defines `ConfigurationParameters` for a 1-row calendar view, disabling out-dates and generating in-dates only for the first month. This is crucial for a compact week view.

```swift
let parameters = ConfigurationParameters(
                    startDate: startDate,
                    endDate: endDate,
                    numberOfRows: 1,
                    generateInDates: .forFirstMonthOnly,
                    generateOutDates: .off,
                    hasStrictBoundaries: false
                )
```

--------------------------------

### Configure JTAppleCalendarView with Row Switching Logic

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/switch-month-to-week-view/Switch between month-view and week-view.md

This Swift function dynamically configures `JTAppleCalendarView` based on the `numberOfRows`. It returns different `ConfigurationParameters` for 6-row (default) and 1-row (compact) views, adjusting in-date and out-date generation accordingly.

```swift
func configureCalendar(_ calendar: JTAppleCalendarView) -> ConfigurationParameters {
    let formatter = DateFormatter()
    formatter.dateFormat = "yyyy MM dd"

    let startDate = formatter.date(from: "2018 01 01")!
    let endDate = Date()

    if numberOfRows == 6 {
        return ConfigurationParameters(startDate: startDate, endDate: endDate, numberOfRows: numberOfRows)
    } else {
        return ConfigurationParameters(startDate: startDate,
                                       endDate: endDate,
                                       numberOfRows: numberOfRows,
                                       generateInDates: .forFirstMonthOnly,
                                       generateOutDates: .off,
                                       hasStrictBoundaries: false)
    }
}
```

--------------------------------

### Update JTAppleCalendar Pod to Master Branch (Swift/Objective-C)

Source: https://github.com/patchthecode/jtapplecalendar/wiki/Common-Questions

This snippet shows how to update the JTAppleCalendar CocoaPod to the latest master branch for testing purposes. It involves modifying the Podfile, updating pods, cleaning the Xcode project, and rebuilding the app. This is useful for testing bug fixes or new features before they are released.

```ruby
pod 'JTAppleCalendar', :git => 'https://github.com/patchthecode/JTAppleCalendar.git'
```

```shell
pod update
```

```shell
CMD + SHIFT + K
```

--------------------------------

### Custom Date Cell Implementation in Swift

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/build-calendar/Build A Calendar From Scratch.md

Defines a custom cell class 'DateCell' that inherits from JTAppleCell, intended for use within the JTAppleCalendarView. It includes an IBOutlet for a UILabel to display the date. This class is essential for customizing the appearance and behavior of individual date cells in the calendar.

```swift
import JTAppleCalendar
import UIKit

class DateCell: JTAppleCell {
    @IBOutlet var dateLabel: UILabel!
}
```

--------------------------------

### Notify Library of Device Rotation - Swift

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/common-elements/device-rotation/Handling Device Rotation.md

This function should be called within your ViewController's `viewWillTransition` delegate method to inform the calendar library about device orientation changes. It requires the new size, a transition coordinator, and an optional anchor date to focus on after the rotation.

```swift
public func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator, anchorDate: Date?)
```

```swift
override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
    let visibleDates = calendarView.visibleDates()
    calendarView.viewWillTransition(to: .zero, with: coordinator, anchorDate: visibleDates.monthDates.first?.date)
}
```

--------------------------------

### JTAppleCalendar Delegate Methods for Cell Display

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/common-elements/configure-in-out-month-dates/Configuring inDates monthDates outDates.md

These Swift functions are JTAppleCalendar delegate methods responsible for creating and configuring the cells displayed in the calendar. 'calendar(_:cellForItemAt:date:cellState:indexPath:)' dequeues a reusable cell and calls 'willDisplay' to configure it. 'calendar(_:willDisplay:forItemAt:date:cellState:indexPath:)' then calls 'configureCell' to set the cell's appearance, reusing logic.

```swift
func calendar(_ calendar: JTAppleCalendarView, cellForItemAt date: Date, cellState: CellState, indexPath: IndexPath) -> JTAppleCell {
   let cell = calendar.dequeueReusableJTAppleCell(withReuseIdentifier: "dateCell", for: indexPath) as! DateCell
   self.calendar(calendar, willDisplay: cell, forItemAt: date, cellState: cellState, indexPath: indexPath)
   return cell
}

func calendar(_ calendar: JTAppleCalendarView, willDisplay cell: JTAppleCell, forItemAt date: Date, cellState: CellState, indexPath: IndexPath) {
   configureCell(view: cell, cellState: cellState)
}
```

--------------------------------

### Animate JTAppleCalendarView Row Switching

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/switch-month-to-week-view/Switch between month-view and week-view.md

Implements an IBAction `toggle` to switch between 6-row and 1-row calendar views. It animates the height constraint change and reloads the calendar data, optionally setting an anchor date.

```swift
@IBAction func toggle(_ sender: Any) {
    if numberOfRows == 6 {
        self.constraint.constant = 58.33
        self.numberOfRows = 1
        UIView.animate(withDuration: 0.2, animations: {
            self.view.layoutIfNeeded()
        }) { completed in
            self.calendarView.reloadData(withanchor: Date())
        }
    } else {
        self.constraint.constant = 350
        self.numberOfRows = 6

        UIView.animate(withDuration: 0.2, animations: {
            self.view.layoutIfNeeded()
            self.calendarView.reloadData(withanchor: Date())
        })
    }
}
```

--------------------------------

### Implement Calendar Delegate for Selection Events (Swift)

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/common-elements/regular-selection/Regular Selection.md

Adds the `calendar(_:didSelectDate:cell:cellState:)` and `calendar(_:didDeselectDate:cell:cellState:)` delegate methods to the ViewController. These methods are crucial for triggering the `configureCell` function whenever a date is selected or deselected, ensuring the UI updates accordingly.

```swift
func calendar(_ calendar: JTAppleCalendarView, didSelectDate date: Date, cell: JTAppleCell?, cellState: CellState) {
    configureCell(view: cell, cellState: cellState)
    }

func calendar(_ calendar: JTAppleCalendarView, didDeselectDate date: Date, cell: JTAppleCell?, cellState: CellState) {
    configureCell(view: cell, cellState: cellState)
    }
```

--------------------------------

### Configure DateCell for Selection (Swift)

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/common-elements/regular-selection/Regular Selection.md

Defines the `DateCell` class with outlets for `dateLabel` and `selectedView`. The `selectedView` is a UIView used to visually indicate a selected date. Ensure this view is added to your storyboard, positioned behind the label, and properly constrained.

```swift
class DateCell: JTAppleCell {
    @IBOutlet var dateLabel: UILabel!
    @IBOutlet var selectedView: UIView!
}
```

--------------------------------

### Handle Cell Selection and Deselection Logic (Swift)

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/common-elements/regular-selection/Regular Selection.md

Implements `configureCell` and `handleCellSelected` functions within the ViewController. `configureCell` sets the date label's text and calls handlers for text color and selection. `handleCellSelected` toggles the visibility and applies corner radius to the `selectedView` based on the cell's selection state.

```swift
func configureCell(view: JTAppleCell?, cellState: CellState) {
    guard let cell = view as? DateCell else { return }
    cell.dateLabel.text = cellState.text
    handleCellTextColor(cell: cell, cellState: cellState)
    handleCellSelected(cell: cell, cellState: cellState)
    }

func handleCellSelected(cell: DateCell, cellState: CellState) {
    if cellState.isSelected {
    cell.selectedView.layer.cornerRadius = 13
    cell.selectedView.isHidden = false
    } else {
    cell.selectedView.isHidden = true
    }
}
```

--------------------------------

### Create a Custom Header View for JTAppleCalendar

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/headers/Headers.md

This Swift class, 'DateHeader', extends JTAppleCollectionReusableView and is designed to represent a header view within the JTAppleCalendar. It includes an IBOutlet for a UILabel named 'monthTitle' to display the month's name. This class is intended to be used with a reusable identifier 'DateHeader' in Storyboards or XIBs.

```swift
import UIKit
import JTAppleCalendar

class DateHeader: JTAppleCollectionReusableView {
@IBOutlet var monthTitle: UILabel!
}
```

--------------------------------

### Configure Cell Text Color for Dates

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/common-elements/configure-in-out-month-dates/Configuring inDates monthDates outDates.md

These Swift functions configure the appearance of calendar cells based on whether the date belongs to the current month or an adjacent month. 'configureCell' is the main function that calls 'handleCellTextColor' to set the text color. It ensures that dates belonging to the current month are black, while dates from previous or following months are gray.

```swift
func configureCell(view: JTAppleCell?, cellState: CellState) {
   guard let cell = view as? DateCell  else { return }
   cell.dateLabel.text = cellState.text
   handleCellTextColor(cell: cell, cellState: cellState)
}

func handleCellTextColor(cell: DateCell, cellState: CellState) {
   if cellState.dateBelongsTo == .thisMonth {
      cell.dateLabel.textColor = UIColor.black
   } else {
      cell.dateLabel.textColor = UIColor.gray
   }
}
```

--------------------------------

### Custom Interval Scrolling - Swift

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/scrolling-modes/Scrolling Modes.md

This code snippet illustrates how to configure custom interval scrolling for the calendar view. It allows non-continuous scrolling to stop at a user-defined interval or continuous scrolling with gradual deceleration and snapping to a custom interval. The `stopAtEach` and `nonStopTo` methods accept custom interval and resistance values.

```swift
calendarView.scrollingMode = .stopAtEach(customInterval: 100)
calendarView.scrollingMode = .nonStopTo(customInterval: 100, withResistance: 0.7)
```

--------------------------------

### Swift: Create Week Number Cell Class

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/implementing-week-numbers/Implementing week numbers.md

Defines a custom UICollectionViewCell subclass named 'WeekCountCell' to hold a UILabel for displaying the week number. This class is used in conjunction with the storyboard to represent individual week number cells.

```swift
import UIKit

class WeekCountCell: UICollectionViewCell {
    @IBOutlet var countLabel: UILabel!
}
```

--------------------------------

### Swift: Configure UICollectionView for Week Numbers

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/implementing-week-numbers/Implementing week numbers.md

Implements the UICollectionViewDataSource and UICollectionViewDelegate protocols for the 'weekCount' UICollectionView. It sets the number of items to 55 (assuming a maximum of 55 weeks in a year) and configures each cell to display its item index plus one as the week number.

```swift
extension ViewController: UICollectionViewDataSource, UICollectionViewDelegate {
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 55
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "WeekCountCell", for: indexPath) as! WeekCountCell
        cell.countLabel.text = "(indexPath.item + 1)"
        return cell
    }
}
```

--------------------------------

### Enable Range Selection and Multiple Selection (Swift)

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/range-selection-styles/Range selection styles.md

This code enables multiple selections and specifically the range selection mode for the JTAppleCalendarView. Range selection influences how cells are updated when selected, affecting adjacent cells.

```swift
override func viewDidLoad() {
   super.viewDidLoad()
   calendarView.allowsMultipleSelection = true
   calendarView.isRangeSelectionUsed = true
}
```

--------------------------------

### Handle Drag Gesture to Select Date Range (Swift)

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/range-selection-styles/Range selection styles.md

This function is called when the long press gesture is recognized. It determines the date associated with the gesture's location and updates the selected date range in the calendar. It handles cases where the tapped date is not yet selected or is already part of the range.

```swift
@objc func didStartRangeSelecting(gesture: UILongPressGestureRecognizer) {
    let point = gesture.location(in: gesture.view!)
    let rangeSelectedDates = calendarView.selectedDates

    guard let cellState = calendarView.cellStatus(at: point) else { return }

    if !rangeSelectedDates.contains(cellState.date) {
        let dateRange = calendarView.generateDateRange(from: rangeSelectedDates.first ?? cellState.date, to: cellState.date)
        calendarView.selectDates(dateRange, keepSelectionIfMultiSelectionAllowed: true)
    } else {
        let followingDay = testCalendar.date(byAdding: .day, value: 1, to: cellState.date)!
        calendarView.selectDates(from: followingDay, to: rangeSelectedDates.last!, keepSelectionIfMultiSelectionAllowed: false)
    }
}
```

--------------------------------

### Swift: Scroll Calendar View and Update Week Number

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/implementing-week-numbers/Implementing week numbers.md

Implements JTAppleCalendarView delegate methods to handle scrolling. The 'calendar(_:willScrollToDateSegmentWith:)' method determines the current week number from the visible dates and scrolls the 'weekCount' UICollectionView to display the corresponding week number cell.

```swift
func calendar(_ calendar: JTAppleCalendarView, willDisplay cell: JTAppleCell, forItemAt date: Date, cellState: CellState, indexPath: IndexPath) {
    configureCell(view: cell, cellState: cellState)
}

func calendar(_ calendar: JTAppleCalendarView, willScrollToDateSegmentWith visibleDates: DateSegmentInfo) {
    let date: Date = visibleDates.monthDates.first!.date
    let weekNumber = Calendar.current.component(.weekOfYear, from: date)
    weekCount.scrollToItem(at: IndexPath(item: weekNumber - 1, section: 0), at: .top, animated: true)
}

func calendar(_ calendar: JTAppleCalendarView, headerViewForDateRange range: (start: Date, end: Date), at indexPath: IndexPath) ->; JTAppleCollectionReusableView {
```

--------------------------------

### Set Scrolling Mode - Swift

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/scrolling-modes/Scrolling Modes.md

This code snippet demonstrates how to set the scrolling mode for the calendar view. It supports various modes like stopAtEachCalendarFrame, stopAtEachSection, nonStopToSection, nonStopToCell, and none. The specific mode is assigned to the `scrollingMode` property of the `calendarView` object.

```swift
calendarView.scrollingMode = .stopAtEachCalendarFrame
calendarView.scrollingMode = .stopAtEachSection
calendarView.scrollingMode = .nonStopToSection(withResistance: 0.5)
calendarView.scrollingMode = .nonStopToCell(withResistance: 0.5)
calendarView.scrollingMode = .none
```

--------------------------------

### Hide or Show InDates/OutDates in Calendar Cell

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/common-elements/configure-in-out-month-dates/Configuring inDates monthDates outDates.md

This Swift code snippet demonstrates how to control the visibility of calendar cells based on whether they belong to the current month. By setting `cell.isHidden` to `false` for dates within the current month and `true` for others, you can effectively hide 'inDates' or 'outDates'. This allows for flexible calendar designs where only the current month's dates are visible.

```swift
if cellState.dateBelongsTo == .thisMonth {
   cell.isHidden = false
} else {
   cell.isHidden = true
}
```

--------------------------------

### Customize Cell Appearance for Range Selection Positions (Swift)

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/range-selection-styles/Range selection styles.md

This function customizes the appearance of the selected view within a calendar cell based on its position within a selected date range (left, middle, right, or full). It sets corner radius and masked corners to visually represent the selected range.

```swift
func handleCellSelected(cell: DateCell, cellState: CellState) {
    cell.selectedView.isHidden = !cellState.isSelected
    switch cellState.selectedPosition() {
    case .left:
        cell.selectedView.layer.cornerRadius = 20
        cell.selectedView.layer.maskedCorners = [.layerMinXMaxYCorner, .layerMinXMinYCorner]
    case .middle:
        cell.selectedView.layer.cornerRadius = 0
        cell.selectedView.layer.maskedCorners = []
    case .right:
        cell.selectedView.layer.cornerRadius = 20
        cell.selectedView.layer.maskedCorners = [.layerMaxXMaxYCorner, .layerMaxXMinYCorner]
    case .full:
        cell.selectedView.layer.cornerRadius = 20
        cell.selectedView.layer.maskedCorners = [.layerMaxXMaxYCorner, .layerMaxXMinYCorner, .layerMinXMaxYCorner, .layerMinXMinYCorner]
    default: break
    }
}
```

--------------------------------

### Configure JTAppleCalendarView for Horizontal Paging

Source: https://github.com/patchthecode/jtapplecalendar/blob/master/docs/headers/Headers.md

This code configures the JTAppleCalendarView to scroll horizontally and stop at each calendar frame. It also hides the horizontal scroll indicator. This is achieved by setting properties on the calendarView outlet within the ViewController's viewDidLoad method.

```swift
class ViewController: UIViewController {
@IBOutlet var calendarView: JTAppleCalendarView!
    override func viewDidLoad() {
        super.viewDidLoad()
        calendarView.scrollDirection = .horizontal
        calendarView.scrollingMode   = .stopAtEachCalendarFrame
        calendarView.showsHorizontalScrollIndicator = false
    }
}
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.