107 lines
3.4 KiB
Swift
107 lines
3.4 KiB
Swift
//
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// FindOnPageViewController.swift
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// App
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//
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// Created by James Magahern on 9/30/20.
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//
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import UIKit
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class FindOnPageViewController: UIViewController, _WKFindDelegate
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{
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static func isEnabled() -> Bool {
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if #available(iOS 16.0, *) {
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return false
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}
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return true
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}
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let findOnPageView = FindOnPageView()
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weak var webView: WKWebView? {
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didSet { webView?._findDelegate = self }
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}
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private var findString: String?
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private let findOptions: _WKFindOptions = [
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.caseInsensitive,
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.atWordStarts,
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.treatMedialCapitalAsWordStart,
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.wrapAround,
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.showFindIndicator,
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.showOverlay,
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.showHighlight,
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.determineMatchIndex,
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]
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private let maxCount: UInt = 1000
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convenience init() {
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self.init(nibName: nil, bundle: nil)
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findOnPageView.textField.addAction(UIAction(handler: { [unowned self] _ in
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self.findString = findOnPageView.textField.text
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webView?._find(self.findString, options: self.findOptions, maxCount: Int(self.maxCount))
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}), for: .editingChanged)
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findOnPageView.prevResultButton.addAction(UIAction(handler: { [unowned self] _ in
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findPrevious(nil)
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}), for: .touchUpInside)
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findOnPageView.nextResultButton.addAction(UIAction(handler: { [unowned self] _ in
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findNext(nil)
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}), for: .touchUpInside)
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findOnPageView.doneButton.addAction(UIAction(handler: { [unowned self] _ in
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doneFinding(nil)
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}), for: .touchUpInside)
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// Escape to cancel
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addKeyCommand(UIKeyCommand(input: UIKeyCommand.inputEscape, modifierFlags: [], action: #selector(Self.doneFinding)))
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// Return goes to next
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addKeyCommand(UIKeyCommand(input: "\n", modifierFlags: [], action: #selector(Self.findNext)))
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// Cmd+G next
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addKeyCommand(UIKeyCommand(input: "G", modifierFlags: [.command], action: #selector(Self.findNext)))
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// Shift return goes to prev
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addKeyCommand(UIKeyCommand(input: "\n", modifierFlags: [.shift], action: #selector(Self.findPrevious)))
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// Shift+Cmd+G prev
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addKeyCommand(UIKeyCommand(input: "G", modifierFlags: [.command, .shift], action: #selector(Self.findPrevious)))
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self.view = findOnPageView
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}
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@objc
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func doneFinding(_ sender: Any?) {
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findOnPageView.textField.resignFirstResponder()
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webView?._hideFindUI()
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}
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@objc
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override func findNext(_ sender: Any?) {
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webView?._find(self.findString, options: self.findOptions, maxCount: Int(self.maxCount))
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}
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@objc
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override func findPrevious(_ sender: Any?) {
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let options: _WKFindOptions = self.findOptions.union(.backwards)
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webView?._find(self.findString, options: options, maxCount: Int(self.maxCount))
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}
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func _webView(_ webView: WKWebView!, didFailToFind string: String!) {
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// ??
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}
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private func _webView(_ webView: WKWebView!, didCountMatches matches: UInt, for string: String!) {
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// TODO: Update a label
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}
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private func _webView(_ webView: WKWebView!, didFindMatches matches: UInt, for string: String!, withMatch matchIndex: Int) {
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findOnPageView.nextResultButton.isEnabled = matches > 0
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findOnPageView.prevResultButton.isEnabled = matches > 0
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}
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}
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