Added possibility to search in body text

Sources/Extension/UITextView_Extension.swift

@@ -0,0 +1,45 @@
+//
+//  UITextView_Extension.swift
+//  Wormholy-iOS
+//
+//  Created by Alex Petrarca on 18/07/18.
+//  Copyright © 2018 Wormholy. All rights reserved.
+//
+
+import UIKit
+
+extension UITextView {
+    func highlights(text: String?, with color: UIColor = UIColor.green, font: UIFont = UIFont.boldSystemFont(ofSize: 14)) -> [NSTextCheckingResult] {
+
+        guard let keywordSearch = text?.lowercased(), let textViewText = self.text?.lowercased() else { return [] }
+
+        let attributed = NSMutableAttributedString(string: textViewText)
+        attributed.addAttribute(.font, value: UIFont.systemFont(ofSize: 14), range: NSRange(location: 0, length: self.attributedText.length))
+
+        do {
+            let regex = try NSRegularExpression(pattern: keywordSearch, options: .caseInsensitive)
+            let matches = regex.matches(in: textViewText, options: [], range: NSMakeRange(0, textViewText.count))
+
+            matches.forEach {
+                attributed.addAttribute(.backgroundColor, value: color, range: $0.range)
+                attributed.addAttribute(.font, value: font, range: $0.range)
+            }
+            self.attributedText = attributed
+
+            return matches
+
+        } catch let error {
+            print(error)
+        }
+        return []
+    }
+
+    func convertRange(range: NSRange) -> UITextRange? {
+        let beginning = self.beginningOfDocument
+        if let start = self.position(from: beginning, offset: range.location),
+            let end = self.position(from: start, offset: range.length) {
+            return self.textRange(from: start, to: end)
+        }
+        return nil
+    }
+}

Sources/Support Files/Colors.swift

@@ -14,6 +14,8 @@ struct Colors {
     }
 
     struct UI{
+        static public let wordsInEvidence = UIColor(hexString: "#dadfe1")
+        static public let wordFocus = UIColor(hexString: "#f7ca18")
     }
 
     struct Gray{

Sources/UI/BodyDetailViewController.swift

@@ -9,14 +9,36 @@
 import UIKit
 
 class BodyDetailViewController: WHBaseViewController {
-
+    @IBOutlet weak var constraintBottomViewInput: NSLayoutConstraint!
+    @IBOutlet weak var toolBar: UIToolbar!
+    @IBOutlet weak var labelWordFinded: UILabel!
     @IBOutlet weak var textView: WHTextView!
+    @IBOutlet weak var buttonPrevious: UIBarButtonItem!
+    @IBOutlet weak var buttonNext: UIBarButtonItem!
+
+    static let kPadding: CGFloat = 10.0
+
+    var searchController: UISearchController?
+    var highlightedWords: [NSTextCheckingResult] = []
     var data: Data?
+    var indexOfWord: Int = 0
+
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
 
     override func viewDidLoad() {
         super.viewDidLoad()
+        NotificationCenter.default.addObserver(self, selector: #selector(BodyDetailViewController.handleKeyboardWillShow(_:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(BodyDetailViewController.handleKeyboardWillHide(_:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
+
         let shareButton = UIBarButtonItem(barButtonSystemItem: .action, target: self, action: #selector(shareContent))
-        navigationItem.rightBarButtonItems = [shareButton]
+        let searchButton = UIBarButtonItem(barButtonSystemItem: .search, target: self, action: #selector(showSearch))
+        navigationItem.rightBarButtonItems = [searchButton, shareButton]
+
+        buttonPrevious.isEnabled = false
+        buttonNext.isEnabled = false
+        addSearchController()
     }
 
     override func viewWillAppear(_ animated: Bool) {
@@ -32,21 +54,117 @@ class BodyDetailViewController: WHBaseViewController {
 
     override func viewDidAppear(_ animated: Bool) {
         super.viewDidAppear(animated)
-        
+
     }
+
     override func didReceiveMemoryWarning() {
         super.didReceiveMemoryWarning()
     }
+
+    //  MARK: - Search
+    func addSearchController(){
+        searchController = UISearchController(searchResultsController: nil)
+        searchController?.searchResultsUpdater = self
+        searchController?.searchBar.returnKeyType = .done
+        searchController?.searchBar.delegate = self
+        if #available(iOS 9.1, *) {
+            searchController?.obscuresBackgroundDuringPresentation = false
+        } else {
+            // Fallback
+        }
+        searchController?.searchBar.placeholder = "Search"
+        if #available(iOS 11.0, *) {
+            navigationItem.searchController = searchController
+        } else {
+            navigationItem.titleView = searchController?.searchBar
+        }
+        definesPresentationContext = true
+    }
+
+    @IBAction func previousStep(_ sender: UIBarButtonItem?) {
+        indexOfWord -= 1
+        if indexOfWord < 0 {
+            indexOfWord = highlightedWords.count - 1
+        }
+        getCursor()
+    }
 
+    @IBAction func nextStep(_ sender: UIBarButtonItem?) {
+        indexOfWord += 1
+        if indexOfWord >= highlightedWords.count {
+            indexOfWord = 0
+        }
+        getCursor()
+    }
+
+    func getCursor() {
+        let value = highlightedWords[indexOfWord]
+        if let range = textView.convertRange(range: value.range) {
+            let rect = textView.firstRect(for: range)
+
+            labelWordFinded.text = "\(indexOfWord + 1) of \(highlightedWords.count)"
+            let focusRect = CGRect(origin: textView.contentOffset, size: textView.frame.size)
+            if !focusRect.contains(rect) {
+                textView.setContentOffset(CGPoint(x: 0, y: rect.origin.y - BodyDetailViewController.kPadding), animated: true)
+            }
+            cursorAnimation(with: value.range)
+        }
+    }
+
+    func setupSearch(text: String?) {
+        highlightedWords.removeAll()
+        highlightedWords = textView.highlights(text: text, with: Colors.UI.wordsInEvidence)
+
+        indexOfWord = 0
+
+        if highlightedWords.count != 0 {
+            getCursor()
+            buttonPrevious.isEnabled = true
+            buttonNext.isEnabled = true
+        }
+        else {
+            buttonPrevious.isEnabled = false
+            buttonNext.isEnabled = false
+            labelWordFinded.text = "0 of 0"
+        }
+    }
+
     @objc func shareContent(){
         if let text = textView.text{
-        let textShare = [text]
-        let activityViewController = UIActivityViewController(activityItems: textShare, applicationActivities: nil)
-        activityViewController.popoverPresentationController?.sourceView = self.view
-        self.present(activityViewController, animated: true, completion: nil)
+            let textShare = [text]
+            let activityViewController = UIActivityViewController(activityItems: textShare, applicationActivities: nil)
+            activityViewController.popoverPresentationController?.sourceView = self.view
+            self.present(activityViewController, animated: true, completion: nil)
         }
     }
 
+    @objc func showSearch() {
+        searchController?.isActive = true
+    }
+
+    // MARK: - Keyboard
+
+    @objc func handleKeyboardWillShow(_ sender: NSNotification) {
+        guard let keyboardSize = (sender.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue.size else { return }
+
+        animationInputView(with: -keyboardSize.height, notification: sender)
+    }
+
+    @objc func handleKeyboardWillHide(_ sender: NSNotification) {
+        animationInputView(with: 0.0, notification: sender)
+    }
+
+    func animationInputView(with height: CGFloat, notification: NSNotification) {
+        let duration = notification.userInfo?[UIKeyboardAnimationDurationUserInfoKey] as? NSNumber
+        let curve = notification.userInfo?[UIKeyboardAnimationCurveUserInfoKey] as? NSNumber
+
+        self.constraintBottomViewInput.constant = height
+
+        UIView.animate(withDuration: duration?.doubleValue ?? 0.0, delay: 0.0, options: UIViewAnimationOptions(rawValue: UIViewAnimationOptions.RawValue((curve?.intValue)!)), animations: {
+            self.view.layoutIfNeeded()
+        })
+    }
+
     /*
     // MARK: - Navigation
 
@@ -58,3 +176,47 @@ class BodyDetailViewController: WHBaseViewController {
     */
 
 }
+
+extension BodyDetailViewController: UISearchResultsUpdating {
+    func updateSearchResults(for searchController: UISearchController) {
+        if searchController.searchBar.text?.isEmpty == false {
+            setupSearch(text: searchController.searchBar.text)
+        }
+        else {
+            resetSearchText()
+        }
+    }
+}
+
+extension BodyDetailViewController: UISearchBarDelegate {
+    func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
+        searchBar.resignFirstResponder()
+    }
+}
+
+fileprivate extension BodyDetailViewController {
+    func resetSearchText() {
+        let attributedString = NSMutableAttributedString(attributedString: self.textView.attributedText)
+            attributedString.addAttribute(.backgroundColor, value: UIColor.clear, range: NSRange(location: 0, length: self.textView.attributedText.length))
+            attributedString.addAttribute(.font, value: UIFont.systemFont(ofSize: 14), range: NSRange(location: 0, length: self.textView.attributedText.length))
+
+        self.textView.attributedText = attributedString
+        self.labelWordFinded.text = "0 of 0"
+        self.buttonPrevious.isEnabled = false
+        self.buttonNext.isEnabled = false
+    }
+
+    func cursorAnimation(with range: NSRange) {
+        let attributedString = NSMutableAttributedString(attributedString: self.textView.attributedText)
+
+        highlightedWords.forEach {
+            attributedString.addAttribute(.backgroundColor, value: Colors.UI.wordsInEvidence, range: $0.range)
+            attributedString.addAttribute(.font, value: UIFont.boldSystemFont(ofSize: 14), range: $0.range)
+        }
+        self.textView.attributedText = attributedString
+
+        attributedString.addAttribute(.backgroundColor, value: Colors.UI.wordFocus, range: range)
+        self.textView.attributedText = attributedString
+    }
+}
+

Sources/UI/Flow.storyboard

@@ -117,29 +117,74 @@
                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <textView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" editable="NO" textAlignment="natural" translatesAutoresizingMaskIntoConstraints="NO" id="fpK-qH-d5h" customClass="WHTextView" customModule="Wormholy" customModuleProvider="target">
-                                <rect key="frame" x="0.0" y="64" width="375" height="603"/>
+                            <textView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" keyboardDismissMode="onDrag" editable="NO" textAlignment="natural" translatesAutoresizingMaskIntoConstraints="NO" id="fpK-qH-d5h" customClass="WHTextView" customModule="Wormholy" customModuleProvider="target">
+                                <rect key="frame" x="0.0" y="64" width="375" height="559"/>
                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                                 <fontDescription key="fontDescription" type="system" pointSize="14"/>
                                 <textInputTraits key="textInputTraits" autocapitalizationType="sentences"/>
                             </textView>
+                            <toolbar opaque="NO" clearsContextBeforeDrawing="NO" contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="50N-HR-LmK">
+                                <rect key="frame" x="0.0" y="623" width="375" height="44"/>
+                                <items>
+                                    <barButtonItem style="plain" systemItem="flexibleSpace" id="RNb-pa-Z9b"/>
+                                    <barButtonItem style="plain" id="Dvu-s4-6n6">
+                                        <view key="customView" contentMode="scaleToFill" id="wDm-Tn-1Yd">
+                                            <rect key="frame" x="133" y="5.5" width="177" height="33"/>
+                                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                            <subviews>
+                                                <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="0 of 0" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="VxO-VX-XW4">
+                                                    <rect key="frame" x="8" y="6" width="161" height="21"/>
+                                                    <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                                    <color key="textColor" red="0.51784205436706543" green="0.58159953355789185" blue="0.58617168664932251" alpha="1" colorSpace="calibratedRGB"/>
+                                                    <nil key="highlightedColor"/>
+                                                </label>
+                                            </subviews>
+                                            <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                            <constraints>
+                                                <constraint firstItem="VxO-VX-XW4" firstAttribute="leading" secondItem="wDm-Tn-1Yd" secondAttribute="leading" constant="8" id="1M4-or-p61"/>
+                                                <constraint firstAttribute="trailing" secondItem="VxO-VX-XW4" secondAttribute="trailing" constant="8" id="7tD-VQ-WrV"/>
+                                                <constraint firstItem="VxO-VX-XW4" firstAttribute="centerY" secondItem="wDm-Tn-1Yd" secondAttribute="centerY" id="tj5-2Q-HIO"/>
+                                            </constraints>
+                                        </view>
+                                        <color key="tintColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                    </barButtonItem>
+                                    <barButtonItem title="&lt;" id="0uV-bv-w6Y">
+                                        <connections>
+                                            <action selector="previousStep:" destination="S40-LP-XSy" id="9vW-vP-iLe"/>
+                                        </connections>
+                                    </barButtonItem>
+                                    <barButtonItem title="&gt;" id="usk-ma-BJD">
+                                        <connections>
+                                            <action selector="nextStep:" destination="S40-LP-XSy" id="kud-2b-ETO"/>
+                                        </connections>
+                                    </barButtonItem>
+                                </items>
+                            </toolbar>
                         </subviews>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
                         <constraints>
+                            <constraint firstItem="50N-HR-LmK" firstAttribute="bottom" secondItem="Y9P-Kk-3xC" secondAttribute="bottom" id="8iS-pr-kZD"/>
+                            <constraint firstItem="fpK-qH-d5h" firstAttribute="top" secondItem="Y9P-Kk-3xC" secondAttribute="top" id="G1r-th-Ci7"/>
                             <constraint firstItem="fpK-qH-d5h" firstAttribute="leading" secondItem="Y9P-Kk-3xC" secondAttribute="leading" id="LcP-XH-gTf"/>
-                            <constraint firstItem="Y9P-Kk-3xC" firstAttribute="bottom" secondItem="fpK-qH-d5h" secondAttribute="bottom" id="RLZ-Wr-Z9V"/>
+                            <constraint firstItem="50N-HR-LmK" firstAttribute="leading" secondItem="Y9P-Kk-3xC" secondAttribute="leading" id="NDW-xa-Ffi"/>
                             <constraint firstItem="Y9P-Kk-3xC" firstAttribute="trailing" secondItem="fpK-qH-d5h" secondAttribute="trailing" id="ey8-iu-S0g"/>
-                            <constraint firstItem="fpK-qH-d5h" firstAttribute="top" secondItem="Y9P-Kk-3xC" secondAttribute="top" id="jfn-FH-a4p"/>
+                            <constraint firstItem="50N-HR-LmK" firstAttribute="trailing" secondItem="Y9P-Kk-3xC" secondAttribute="trailing" id="ne9-h7-K6x"/>
+                            <constraint firstItem="50N-HR-LmK" firstAttribute="top" secondItem="fpK-qH-d5h" secondAttribute="bottom" id="rIu-y7-dC5"/>
                         </constraints>
                         <viewLayoutGuide key="safeArea" id="Y9P-Kk-3xC"/>
                     </view>
                     <connections>
+                        <outlet property="buttonNext" destination="usk-ma-BJD" id="WOF-OQ-9lC"/>
+                        <outlet property="buttonPrevious" destination="0uV-bv-w6Y" id="EV2-uG-w6x"/>
+                        <outlet property="constraintBottomViewInput" destination="8iS-pr-kZD" id="gPb-Ca-TPx"/>
+                        <outlet property="labelWordFinded" destination="VxO-VX-XW4" id="n8Q-3A-lhj"/>
                         <outlet property="textView" destination="fpK-qH-d5h" id="9qA-qk-Zwk"/>
+                        <outlet property="toolBar" destination="50N-HR-LmK" id="0YO-MP-cGV"/>
                     </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="BEJ-Hi-Vka" userLabel="First Responder" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="1945" y="148"/>
+            <point key="canvasLocation" x="1944.8" y="147.97601199400302"/>
         </scene>
     </scenes>
 </document>