//
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// IQBarButtonItem.swift
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// https://github.com/hackiftekhar/IQKeyboardManager
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// Copyright (c) 2013-24 Iftekhar Qurashi.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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import UIKit
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@available(iOSApplicationExtension, unavailable)
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@MainActor
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@objc open class IQBarButtonItem: UIBarButtonItem {
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internal static let flexibleBarButtonItem: IQBarButtonItem = IQBarButtonItem(barButtonSystemItem: .flexibleSpace,
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target: nil, action: nil)
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@objc public override init() {
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super.init()
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initialize()
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}
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@objc public required init?(coder aDecoder: NSCoder) {
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super.init(coder: aDecoder)
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initialize()
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}
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private func initialize() {
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let states: [UIControl.State] = [.normal, .highlighted, .disabled, .focused]
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for state in states {
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setBackgroundImage(UIImage(), for: state, barMetrics: .default)
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setBackgroundImage(UIImage(), for: state, style: .plain, barMetrics: .default)
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setBackButtonBackgroundImage(UIImage(), for: state, barMetrics: .default)
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}
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setTitlePositionAdjustment(UIOffset(), for: .default)
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setBackgroundVerticalPositionAdjustment(0, for: .default)
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setBackButtonBackgroundVerticalPositionAdjustment(0, for: .default)
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}
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@objc override open var tintColor: UIColor? {
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didSet {
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var textAttributes: [NSAttributedString.Key: Any] = [:]
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textAttributes[.foregroundColor] = tintColor
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if let attributes: [NSAttributedString.Key: Any] = titleTextAttributes(for: .normal) {
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for (key, value) in attributes {
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textAttributes[key] = value
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}
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}
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setTitleTextAttributes(textAttributes, for: .normal)
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}
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}
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/**
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Boolean to know if it's a system item or custom item,
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we are having a limitation that we cannot override a designated initializer,
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so we are manually setting this property once in initialization
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*/
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internal var isSystemItem: Bool = false
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/**
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Additional target & action to do get callback action.
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Note that setting custom target & selector doesn't affect native functionality,
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this is just an additional target to get a callback.
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@param target Target object.
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@param action Target Selector.
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*/
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@objc open func setTarget(_ target: AnyObject?, action: Selector?) {
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if let target: AnyObject = target, let action: Selector = action {
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invocation = IQInvocation(target, action)
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} else {
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invocation = nil
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}
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}
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/**
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Customized Invocation to be called when button is pressed.
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invocation is internally created using setTarget:action: method.
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*/
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@objc open var invocation: IQInvocation? {
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didSet {
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// We have to put this condition here because if we override this function then
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// We were getting "Cannot override '_' which has been marked unavailable" in Xcode 15
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if let titleBarButton = self as? IQTitleBarButtonItem {
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if let target = invocation?.target, let action = invocation?.action {
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titleBarButton.isEnabled = true
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titleBarButton.titleButton?.isEnabled = true
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titleBarButton.titleButton?.addTarget(target, action: action, for: .touchUpInside)
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} else {
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titleBarButton.isEnabled = false
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titleBarButton.titleButton?.isEnabled = false
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titleBarButton.titleButton?.removeTarget(nil, action: nil, for: .touchUpInside)
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}
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}
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}
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}
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}
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