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getting ready for an evolution

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This commit is contained in:
Kevin G Christiano 2020-01-31 15:38:07 -05:00
parent 8832bbd0b7
commit af54ac2a3c
1 changed files with 28 additions and 29 deletions
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57
MVMCoreUI/Atoms/Views/PageControl.swift
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@ -8,16 +8,11 @@
import Foundation
public protocol PagingIndicatorProtocol: class {
typealias PagingTouchBlock = (PagingIndicatorProtocol) -> ()
var currentPage: Int { get }
var numberOfPages: Int { get }
// func setPagingTouchBlock(_ pagingTouchBlock: PagingTouchBlock?)
// func scrollViewDidScroll(_ collectionView: UICollectionView)
}
open class PageControl: Control, PagingIndicatorProtocol {
/**
This class is implemented to focus primarily on the page control logic.
Visual flourishes and bespoke behavior should be subclassed from here.
*/
open class PageControl: Control {
//--------------------------------------------------
// MARK: - Constraints
//--------------------------------------------------
@ -38,18 +33,19 @@ open class PageControl: Control, PagingIndicatorProtocol {
public var indicatorType: IndicatorType = .hybrid
public var indicatorSpacing: CGFloat {
get { return containerStack.spacing }
get { return stackView.spacing }
set {
containerStack.spacing = newValue
containerStack.layoutIfNeeded()
stackView.spacing = newValue
stackView.layoutIfNeeded()
}
}
public let indicatorBarWidth: CGFloat = 24
public let indicatorBarHeight: (selected: CGFloat, unselected: CGFloat) = (selected: 4, unselected: 1)
private(set) var indicators = [BarIndicator]()
var containerStack: StackView = {
var stackView: StackView = {
let stack = StackView()
stack.axis = .horizontal
stack.distribution = .equalSpacing
@ -57,11 +53,13 @@ open class PageControl: Control, PagingIndicatorProtocol {
return stack
}()
public var pagingTouchBlock: PagingIndicatorProtocol.PagingTouchBlock?
public var pagingTouchBlock: ((Int)->())?
// a flag to allow to send UIControlEventValueChanged actions all the time
// e.g. going to previous element at first place and going to next at last place
// While current rectangle won't change, need update current page
// When awlaysSenfingControlEvent is false, and user is already at first or final index, if user try to increment or decrement, won't do action
// while self.awlaysSenfingControlEven is YES, it still send control event, while the rectangle won't change, need set currentPage again.
public var alwaysSendingControlEvent = false
/// Set true to make the accessibility value as "Slide #currentPage of #totalPage", otherwise will be "Page #currentPage of #totalPage", default is false
@ -69,6 +67,9 @@ open class PageControl: Control, PagingIndicatorProtocol {
public var isAnimated = false
public var hidesForSinglePage = false
/// If true, then index will wraparound, otherwise it will stop paging at min/max index.
public var allowIndexWraparound = false
//--------------------------------------------------
// MARK: - Computed Properties
//--------------------------------------------------
@ -165,21 +166,21 @@ open class PageControl: Control, PagingIndicatorProtocol {
open override func setupView() {
super.setupView()
if containerStack.subviews.isEmpty {
if stackView.subviews.isEmpty {
if let accessibleValue = MVMCoreUIUtility.hardcodedString(withKey: isSlidesAccessibile ? "MVMCoreUIPageControlslides_currentpage_index" : "MVMCoreUIPageControl_currentpage_index") {
accessibilityValue = String(format: accessibleValue, currentPage + 1, numberOfPages)
}
addSubview(containerStack)
containerStack.centerXAnchor.constraint(equalTo: centerXAnchor).isActive = true
containerStack.leadingAnchor.constraint(greaterThanOrEqualTo: leadingAnchor).isActive = true
trailingAnchor.constraint(lessThanOrEqualTo: containerStack.trailingAnchor).isActive = true
addSubview(stackView)
stackView.centerXAnchor.constraint(equalTo: centerXAnchor).isActive = true
stackView.leadingAnchor.constraint(greaterThanOrEqualTo: leadingAnchor).isActive = true
trailingAnchor.constraint(lessThanOrEqualTo: stackView.trailingAnchor).isActive = true
topConstraint = containerStack.topAnchor.constraint(equalTo: topAnchor, constant: PaddingThree)
topConstraint = stackView.topAnchor.constraint(equalTo: topAnchor, constant: PaddingThree)
topConstraint?.priority = .defaultHigh
topConstraint?.isActive = true
bottomConstraint = bottomAnchor.constraint(equalTo: containerStack.bottomAnchor, constant: PaddingThree)
bottomConstraint = bottomAnchor.constraint(equalTo: stackView.bottomAnchor, constant: PaddingThree)
bottomConstraint?.priority = .defaultHigh
bottomConstraint?.isActive = true
@ -231,7 +232,7 @@ open class PageControl: Control, PagingIndicatorProtocol {
func indicatorTapped(_ tapGesture: UITapGestureRecognizer?) {
if isUserInteractionEnabled {
let touchPoint_X = tapGesture?.location(in: containerStack).x ?? 0.0
let touchPoint_X = tapGesture?.location(in: stackView).x ?? 0.0
let index = indicators.firstIndex { indicator in
return indicator.frame.maxX >= touchPoint_X && indicator.frame.minX <= touchPoint_X
@ -240,7 +241,7 @@ open class PageControl: Control, PagingIndicatorProtocol {
if let selectIndex = index {
currentPage = selectIndex
sendActions(for: .valueChanged)
pagingTouchBlock?(self)
pagingTouchBlock?(selectIndex)
}
}
}
@ -287,21 +288,19 @@ open class PageControl: Control, PagingIndicatorProtocol {
accessibilityAdjust(toPage: currentPage - 1)
}
// When awlaysSenfingControlEvent is false, and user is already at first or final index, if user try to increment or decrement, won't do action
// while self.awlaysSenfingControlEven is YES, it still send control event, while the rectangle won't change, need set currentPage again.
func accessibilityAdjust(toPage index: Int) {
if (index < numberOfPages && index >= 0) || alwaysSendingControlEvent {
isAnimated = false
currentPage = index
sendActions(for: .valueChanged)
pagingTouchBlock?(self)
pagingTouchBlock?(index)
}
}
func setTopBottomSpace(constant: CGFloat) {
self.bottomConstraint?.constant = constant
self.topConstraint?.constant = constant
bottomConstraint?.constant = constant
topConstraint?.constant = constant
}
public class BarIndicator: View {