I want to preview some files using a QLPreviewPanel.
I've included the following ViewController using a Storyboard
class ViewController: NSViewController, QLPreviewPanelDataSource, QLPreviewPanelDelegate {
override func viewDidAppear() {
super.viewDidAppear()
self.nextResponder = MainWindowController.testinstance!.nextResponder
}
#IBAction func btn(_ sender: Any) {
openPreview(url: URL(fileURLWithPath: "/Users/usr/Desktop/test.mp3"))
}
//preview for audio
private var previewURL : URL?
func openPreview(url: URL){
previewURL = url
if let sharedPanel = QLPreviewPanel.shared() {
sharedPanel.delegate = self
sharedPanel.dataSource = self
sharedPanel.makeKeyAndOrderFront(nil)
}
}
func numberOfPreviewItems(in panel: QLPreviewPanel!) -> Int {
return 1
}
func previewPanel(_ panel: QLPreviewPanel!, previewItemAt index: Int) -> QLPreviewItem! {
if previewURL == nil {
return nil
}
return previewURL as? QLPreviewItem
}
override func acceptsPreviewPanelControl(_ panel: QLPreviewPanel!) -> Bool {
return true
}
override func beginPreviewPanelControl(_ panel: QLPreviewPanel!) {
panel.dataSource = self
panel.delegate = self
}
override func endPreviewPanelControl(_ panel: QLPreviewPanel!) {
panel.dataSource = nil
panel.delegate = nil
}}
Everything works fine - but i get the error
[QL] QLError(): -[QLPreviewPanel setDelegate:] called while the panel has no controller - Fix this or this will raise soon.
See comments in QLPreviewPanel.h for -acceptsPreviewPanelControl:/-beginPreviewPanelControl:/-endPreviewPanelControl:.
How do I solve that? Or is it save to just ignore that error?
Declare a QLPreviewController and then try to show items.
Here is an example for viewing and opening files with QLPreviewController
Example of QLPreviewController
Related
I have implemented function that returns NSItemProvider
func dragOutsideWnd(url: URL?) -> NSItemProvider {
if let url = url {
TheApp.appDelegate.hideMainWnd()
let provider = NSItemProvider(item: url as NSSecureCoding?, typeIdentifier: UTType.fileURL.identifier as String)
provider.suggestedName = url.lastPathComponent
//provider.copy()// This doesn't work :)
//DispatchQueue.main.async {
// TheApp.appDelegate.hideMainWnd()
//}
return provider
}
return NSItemProvider()
}
and I have use it this way:
.onDrag {
return dragOutsideWnd(url: itm.url)
}
This drag&drop action performs file MOVE action to any place of FINDER/HDD.
But how to perform COPY action?
Remember Drag&Drop is actually implemented with NSPasteboard.
I have written an example for you:
GitHub
Now the key to your questions:
To control dragging behavior(your window is the source):
Draggable objects conform to the NSDraggingSource protocol, so check the first method of the protocol:
#MainActor func draggingSession(
_ session: NSDraggingSession,
sourceOperationMaskFor context: NSDraggingContext
) -> NSDragOperation
As the method docsuggests, return different NSDragOperation in this delegation method. That includes: "Copy","Move", "Link", etc.
To control dropping behavior(your window is the destination):
NSView that accepts drop conforms to the NSDraggingDestination protocol, so you need to override the draggingEntered(_:) method by adding this code inside the DestinationView class implementation:
override func draggingEntered(_ sender: NSDraggingInfo) -> NSDragOperation
{
var allow = true
//.copy .move, see more options in NSDragOperation, up to you.
return allow ? .copy : NSDragOperation()
}
More info form Apple's Documentation
For swiftUI, a simple show case SwiftUI Showcase
Further Reading: RayWenderlich.com has a detailed tutorial Drag and Drop Tutorial for macOS tutorial for you(needs a little swift upgrade).
Thanks a lot to answer of kakaiikaka!
The following solution works in swiftUI:
import Foundation
import SwiftUI
extension View {
func asDragable(url: URL, tapAction: #escaping () -> () , dTapAction: #escaping () -> ()) -> some View {
self.background {
DragDropView(url: url, tapAction: tapAction, dTapAction: dTapAction)
}
}
}
struct DragDropView: NSViewRepresentable {
let url: URL
let tapAction: () -> ()
let dTapAction: () -> ()
func makeNSView(context: Context) -> NSView {
return DragDropNSView(url: url, tapAction: tapAction, dTapAction: dTapAction)
}
func updateNSView(_ nsView: NSView, context: Context) { }
}
class DragDropNSView: NSView, NSDraggingSource {
let url: URL
let tapAction: () -> ()
let dTapAction: () -> ()
let imgMove: NSImage = NSImage(named: "arrow.down.doc.fill_cust")!
init(url: URL, tapAction: #escaping () -> (), dTapAction: #escaping () -> ()) {
self.url = url
self.tapAction = tapAction
self.dTapAction = dTapAction
super.init(frame: .zero)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func draggingSession(_ session: NSDraggingSession, sourceOperationMaskFor context: NSDraggingContext) -> NSDragOperation {
return mustBeMoveAction ? .move : .copy
}
}
extension DragDropNSView: NSPasteboardItemDataProvider {
func pasteboard(_ pasteboard: NSPasteboard?, item: NSPasteboardItem, provideDataForType type: NSPasteboard.PasteboardType) {
// If the desired data type is fileURL, you load an file inside the bundle.
if let pasteboard = pasteboard, type == NSPasteboard.PasteboardType.fileURL {
pasteboard.setData(url.dataRepresentation, forType:type)
}
}
override func mouseDown(with event: NSEvent) {
super.mouseDown(with: event)
tapAction()
if event.clickCount == 2 {
dTapAction()
}
}
override func mouseDragged(with event: NSEvent) {
//1. Creates an NSPasteboardItem and sets this class as its data provider. A NSPasteboardItem is the box that carries the info about the item being dragged. The NSPasteboardItemDataProvider provides data upon request. In this case a file url
let pasteboardItem = NSPasteboardItem()
pasteboardItem.setDataProvider(self, forTypes: [NSPasteboard.PasteboardType.fileURL])
var rect = imgMove.alignmentRect
rect.size = NSSize(width: imgMove.size.width/2, height: imgMove.size.height/2)
//2. Creates a NSDraggingItem and assigns the pasteboard item to it
let draggingItem = NSDraggingItem(pasteboardWriter: pasteboardItem)
draggingItem.setDraggingFrame(rect, contents: imgMove) // `contents` is the preview image when dragging happens.
//3. Starts the dragging session. Here you trigger the dragging image to start following your mouse until you drop it.
beginDraggingSession(with: [draggingItem], event: event, source: self)
}
}
////////////////////////////////////////
///HELPERS
///////////////////////////////////////
extension DragDropNSView {
var dragGoingOutsideWindow: Bool {
guard let currEvent = NSApplication.shared.currentEvent else { return false }
if let rect = self.window?.contentView?.visibleRect,
rect.contains(currEvent.locationInWindow)
{
return false
}
return true
}
var mustBeMoveAction: Bool {
guard let currEvent = NSApplication.shared.currentEvent else { return false }
if currEvent.modifierFlags.check(equals: [.command]) {
return true
}
return false
}
}
extension NSEvent.ModifierFlags {
func check(equals: [NSEvent.ModifierFlags] ) -> Bool {
var notEquals: [NSEvent.ModifierFlags] = [.shift, .command, .control, .option]
equals.forEach{ val in notEquals.removeFirst(where: { $0 == val }) }
var result = true
equals.forEach{ val in
if result {
result = self.contains(val)
}
}
notEquals.forEach{ val in
if result {
result = !self.contains(val)
}
}
return result
}
}
usage:
FileIcon()
.asDragable( url: recent.url, tapAction: {}, dTapAction: {})
this element will be draggable and perform MOVE in case .command key pressed.
And will perform COPY in another case
Also it performs drag action only outside widndow. But it's easy to change.
This is the barcode scanning tutorial I used in my program, so that you have a lot more context when you read my code: Link
Here is what my program does so far: Essentially, when I scan an item's barcode with my phone, the UIAlert pops up with the barcode ID displayed and a button prompting the user to open the "Results" page. This is all fine and good, but how do I pass that same scanned barcode ID into a label on the Result's page? I have been stuck on this for 2 days now, even though it seems like such an easy task.
Any help is much appreciated <3
Here is my relevant code:
ProductCatalog.plist ->
Link to Image
Scanner_ViewController.swift (first View Controller) ->
import UIKit
import AVFoundation
class Scanner_ViewController: UIViewController, AVCaptureMetadataOutputObjectsDelegate, ScannerDelegate
{
private var scanner: Scanner?
override func viewDidLoad()
{
super.viewDidLoad()
self.scanner = Scanner(withDelegate: self)
guard let scanner = self.scanner else
{
return
}
scanner.requestCaptureSessionStartRunning()
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// Mark - AVFoundation delegate methods
public func metadataOutput(_ output: AVCaptureMetadataOutput,
didOutput metadataObjects: [AVMetadataObject],
from connection: AVCaptureConnection)
{
guard let scanner = self.scanner else
{
return
}
scanner.metadataOutput(output,
didOutput: metadataObjects,
from: connection)
}
// Mark - Scanner delegate methods
func cameraView() -> UIView
{
return self.view
}
func delegateViewController() -> UIViewController
{
return self
}
func scanCompleted(withCode code: String)
{
print(code)
showAlert_Success(withTitle: (code))
}
private func showAlert_Success(withTitle title: String)
{
let alertController = UIAlertController(title: title, message: "Product has been successfully scanned", preferredStyle: .alert)
// programatically segue to the next view controller when the UIAlert pops up
alertController.addAction(UIAlertAction(title:"Get Results", style: .default, handler:{ action in self.performSegue(withIdentifier: "toAnalysisPage", sender: self) }))
present(alertController, animated: true)
}
}
Scanner.Swift (accompanies Scanner_ViewController.swift)->
import Foundation
import UIKit
import AVFoundation
protocol ScannerDelegate: class
{
func cameraView() -> UIView
func delegateViewController() -> UIViewController
func scanCompleted(withCode code: String)
}
class Scanner: NSObject
{
public weak var delegate: ScannerDelegate?
private var captureSession : AVCaptureSession?
init(withDelegate delegate: ScannerDelegate)
{
self.delegate = delegate
super.init()
self.scannerSetup()
}
private func scannerSetup()
{
guard let captureSession = self.createCaptureSession()
else
{
return
}
self.captureSession = captureSession
guard let delegate = self.delegate
else
{
return
}
let cameraView = delegate.cameraView()
let previewLayer = self.createPreviewLayer(withCaptureSession: captureSession,
view: cameraView)
cameraView.layer.addSublayer(previewLayer)
}
private func createCaptureSession() -> AVCaptureSession?
{
do
{
let captureSession = AVCaptureSession()
guard let captureDevice = AVCaptureDevice.default(for: .video) else
{
return nil
}
let deviceInput = try AVCaptureDeviceInput(device: captureDevice)
let metaDataOutput = AVCaptureMetadataOutput()
// add device input
if captureSession.canAddInput(deviceInput) && captureSession.canAddOutput(metaDataOutput)
{
captureSession.addInput(deviceInput)
captureSession.addOutput(metaDataOutput)
guard let delegate = self.delegate,
let viewController = delegate.delegateViewController() as? AVCaptureMetadataOutputObjectsDelegate else
{
return nil
}
metaDataOutput.setMetadataObjectsDelegate(viewController,
queue: DispatchQueue.main)
metaDataOutput.metadataObjectTypes = self.metaObjectTypes()
return captureSession
}
}
catch
{
// handle error
}
return nil
}
private func createPreviewLayer(withCaptureSession captureSession: AVCaptureSession,
view: UIView) -> AVCaptureVideoPreviewLayer
{
let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
previewLayer.frame = view.layer.bounds
previewLayer.videoGravity = .resizeAspectFill
return previewLayer
}
private func metaObjectTypes() -> [AVMetadataObject.ObjectType]
{
return [.qr,
.code128,
.code39,
.code39Mod43,
.code93,
.ean13,
.ean8,
.interleaved2of5,
.itf14,
.pdf417,
.upce
]
}
public func metadataOutput(_ output: AVCaptureMetadataOutput,
didOutput metadataObjects: [AVMetadataObject],
from connection: AVCaptureConnection)
{
self.requestCaptureSessionStopRunning()
guard let metadataObject = metadataObjects.first,
let readableObject = metadataObject as? AVMetadataMachineReadableCodeObject,
let scannedValue = readableObject.stringValue,
let delegate = self.delegate
else
{
return
}
delegate.scanCompleted(withCode: scannedValue)
}
public func requestCaptureSessionStartRunning()
{
self.toggleCaptureSessionRunningState()
}
public func requestCaptureSessionStopRunning()
{
self.toggleCaptureSessionRunningState()
}
private func toggleCaptureSessionRunningState()
{
guard let captureSession = self.captureSession
else
{
return
}
if !captureSession.isRunning
{
captureSession.startRunning()
}
else
{
captureSession.stopRunning()
}
}
}
Analysis_ViewController.swift (second view controller) ->
Right now, the forKey: has been hard-coded to item ID 8710908501708 because I have no idea how to actually pass camera-scanned ID's into the second View Controller :/
import UIKit
class Analysis_ViewController: UIViewController
{
#IBOutlet weak var productTitle: UILabel!
func getData()
{
let path = Bundle.main.path(forResource:"ProductCatalog", ofType: "plist")
let dict:NSDictionary = NSDictionary(contentsOfFile: path!)!
if (dict.object(forKey: "8710908501708" as Any) != nil)
{
if let levelDict:[String : Any] = dict.object(forKey: "8710908501708" as Any) as? [String : Any]
{
// use a for loop to iterate through all the keys and values in side the "Levels" dictionary
for (key, value) in levelDict
{
// if we find a key named whatever we care about, we can print out the value
if (key == "name")
{
productTitle.text = (value as! String)
}
}
}
}
}
// listing the better options that are safer in comparison to the scanned product image
override func viewDidLoad()
{
super.viewDidLoad()
getData()
}
}
Do you have a variable to hold the scanned ID in your view controllers? If not, you can add var itemID: String? to both Scanner_ViewController and Analysis_ViewController.
Then in your func where you get the scanned code, you can set it to the variable.
func scanCompleted(withCode code: String) {
print(code)
itemID = code // Saves the scanned code to your var
showAlert_Success(withTitle: (code))
}
For passing data to another view controller via segue, you might want to look into this UIViewController method for segues: documentation here. This answer also might help.
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "toAnalysisPage" {
if let viewController = segue.destination as? Analysis_ViewController {
viewController.itemID = itemID
}
}
}
I have a problem with IGListKit sections deallocating. Trying to debug the issue with Xcode memory graph.
My setup is AuthController -> AuthViewModel -> AuthSocialSectionController -> AuthSocialViewModel and some other sections.
AuthController gets presented from several parts of the app if user is not logged in. When I tap close, AuthViewModel and AuthController gets deallocated, but it's underlying sections does not. Memory graph shows nothing leaked in this case, but deinit methods doesn't get called.
But when I'm trying to authorize with social account (successfully) and then look at the memory graph, it shows that sections, that doesn't get deallocated like this:
In this case AuthViewModel doesn't get deallocated either, but after some time it does, but it can happen or not.
I checked every closure and delegate for weak reference, but still no luck.
My code, that I think makes most sense:
class AuthViewController: UIViewController {
fileprivate let collectionView: UICollectionView = UICollectionView(frame: .zero,
collectionViewLayout: UICollectionViewFlowLayout())
lazy var adapter: ListAdapter
= ListAdapter(updater: ListAdapterUpdater(), viewController: self, workingRangeSize: 0)
fileprivate lazy var previewProxy: SJListPreviewProxy = {
SJListPreviewProxy(adapter: adapter)
}()
fileprivate let viewModel: AuthViewModel
fileprivate let disposeBag = DisposeBag()
init(with viewModel: AuthViewModel) {
self.viewModel = viewModel
super.init(nibName: nil, bundle: nil)
hidesBottomBarWhenPushed = true
setupObservers()
}
private func setupObservers() {
NotificationCenter.default.rx.notification(.SJAProfileDidAutoLogin)
.subscribe(
onNext: { [weak self] _ in
self?.viewModel.didSuccessConfirmationEmail()
self?.viewModel.recoverPasswordSuccess()
})
.disposed(by: disposeBag)
}
required init?(coder _: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
// MARK: - View Controller Lifecycle
override func viewDidLoad() {
super.viewDidLoad()
setup()
}
// MARK: - Private
#objc private func close() {
dismiss(animated: true, completion: nil)
}
/// Метод настройки экрана
private func setup() {
if isForceTouchEnabled() {
registerForPreviewing(with: previewProxy, sourceView: collectionView)
}
view.backgroundColor = AppColor.instance.gray
title = viewModel.screenName
let item = UIBarButtonItem(image: #imageLiteral(resourceName: "close.pdf"), style: .plain, target: self, action: #selector(AuthViewController.close))
item.accessibilityIdentifier = "auth_close_btn"
asViewController.navigationItem.leftBarButtonItem = item
navigationItem.titleView = UIImageView(image: #imageLiteral(resourceName: "logo_superjob.pdf"))
collectionViewSetup()
}
// Настройка collectionView
private func collectionViewSetup() {
collectionView.keyboardDismissMode = .onDrag
collectionView.backgroundColor = AppColor.instance.gray
view.addSubview(collectionView)
adapter.collectionView = collectionView
adapter.dataSource = self
collectionView.snp.remakeConstraints { make in
make.edges.equalToSuperview()
}
}
}
// MARK: - DataSource CollectionView
extension AuthViewController: ListAdapterDataSource {
func objects(for listAdapter: ListAdapter) -> [ListDiffable] {
return viewModel.sections(for: listAdapter)
}
func listAdapter(_: ListAdapter, sectionControllerFor object: Any) -> ListSectionController {
return viewModel.createListSectionController(for: object)
}
func emptyView(for _: ListAdapter) -> UIView? {
return nil
}
}
// MARK: - AuthViewModelDelegate
extension AuthViewController: AuthViewModelDelegate {
func hideAuth(authSuccessBlock: AuthSuccessAction?) {
dismiss(animated: true, completion: {
authSuccessBlock?()
})
}
func reload(animated: Bool, completion: ((Bool) -> Void)? = nil) {
adapter.performUpdates(animated: animated, completion: completion)
}
func showErrorPopover(with item: CommonAlertPopoverController.Item,
and anchors: (sourceView: UIView, sourceRect: CGRect)) {
let popover = CommonAlertPopoverController(with: item,
preferredContentWidth: view.size.width - 32.0,
sourceView: anchors.sourceView,
sourceRect: anchors.sourceRect,
arrowDirection: .up)
present(popover, animated: true, completion: nil)
}
}
class AuthViewModel {
fileprivate let assembler: AuthSectionsAssembler
fileprivate let router: AuthRouter
fileprivate let profileFacade: SJAProfileFacade
fileprivate let api3ProfileFacade: API3ProfileFacade
fileprivate let analytics: AnalyticsProtocol
fileprivate var sections: [Section] = []
weak var authDelegate: AuthDelegate?
weak var vmDelegate: AuthViewModelDelegate?
var authSuccessBlock: AuthSuccessAction?
private lazy var socialSection: AuthSocialSectionViewModel = { [unowned self] in
self.assembler.socialSection(delegate: self)
}()
init(assembler: AuthSectionsAssembler,
router: AuthRouter,
profileFacade: SJAProfileFacade,
api3ProfileFacade: API3ProfileFacade,
analytics: AnalyticsProtocol,
delegate: AuthDelegate? = nil,
purpose: Purpose) {
self.purpose = purpose
authDelegate = delegate
self.assembler = assembler
self.router = router
self.profileFacade = profileFacade
self.api3ProfileFacade = api3ProfileFacade
self.analytics = analytics
sections = displaySections()
}
private func authDisplaySections() -> [Section] {
let sections: [Section?] = [vacancySection,
authHeaderSection,
socialSection,
authLoginPasswordSection,
signInButtonSection,
switchToSignUpButtonSection,
recoverPasswordSection]
return sections.compactMap { $0 }
}
}
class AuthSocialSectionController: SJListSectionController, SJUpdateCellsLayoutProtocol {
fileprivate let viewModel: AuthSocialSectionViewModel
init(viewModel: AuthSocialSectionViewModel) {
self.viewModel = viewModel
super.init()
minimumInteritemSpacing = 4
viewModel.vmDelegate = self
}
override func cellType(at _: Int) -> UICollectionViewCell.Type {
return AuthSocialCell.self
}
override func cellInitializationType(at _: Int) -> SJListSectionCellInitializationType {
return .code
}
override func configureCell(_ cell: UICollectionViewCell, at index: Int) {
guard let itemCell = cell as? AuthSocialCell else {
return
}
let item = viewModel.item(at: index)
itemCell.imageView.image = item.image
}
override func separationStyle(at _: Int) -> SJCollectionViewCellSeparatorStyle {
return .none
}
}
extension AuthSocialSectionController {
override func numberOfItems() -> Int {
return viewModel.numberOfItems
}
override func didSelectItem(at index: Int) {
viewModel.didSelectItem(at: index)
}
}
// MARK: - AuthSocialSectionViewModelDelegate
extension AuthSocialSectionController: AuthSocialSectionViewModelDelegate {
func sourceViewController() -> UIViewController {
return viewController ?? UIViewController()
}
}
protocol AuthSocialSectionDelegate: class {
func successfullyAuthorized(type: SJASocialAuthorizationType)
func showError(with error: Error)
}
protocol AuthSocialSectionViewModelDelegate: SJListSectionControllerOperationsProtocol, ViewControllerProtocol {
func sourceViewController() -> UIViewController
}
class AuthSocialSectionViewModel: NSObject {
struct Item {
let image: UIImage
let type: SJASocialAuthorizationType
}
weak var delegate: AuthSocialSectionDelegate?
weak var vmDelegate: AuthSocialSectionViewModelDelegate?
fileprivate var items: [Item]
fileprivate let api3ProfileFacade: API3ProfileFacade
fileprivate let analyticsFacade: SJAAnalyticsFacade
fileprivate var socialButtonsDisposeBag = DisposeBag()
init(api3ProfileFacade: API3ProfileFacade,
analyticsFacade: SJAAnalyticsFacade) {
self.api3ProfileFacade = api3ProfileFacade
self.analyticsFacade = analyticsFacade
items = [
Item(image: #imageLiteral(resourceName: "ok_icon.pdf"), type: .OK),
Item(image: #imageLiteral(resourceName: "vk_icon.pdf"), type: .VK),
Item(image: #imageLiteral(resourceName: "facebook_icon.pdf"), type: .facebook),
Item(image: #imageLiteral(resourceName: "mail_icon.pdf"), type: .mail),
Item(image: #imageLiteral(resourceName: "google_icon.pdf"), type: .google),
Item(image: #imageLiteral(resourceName: "yandex_icon.pdf"), type: .yandex)
]
if analyticsFacade.isHHAuthAvailable() {
items.append(Item(image: #imageLiteral(resourceName: "hh_icon"), type: .HH))
}
}
// MARK: - actions
func didSelectItem(at index: Int) {
guard let vc = vmDelegate?.sourceViewController() else {
return
}
let itemType: SJASocialAuthorizationType = items[index].type
socialButtonsDisposeBag = DisposeBag()
api3ProfileFacade.authorize(with: itemType, sourceViewController: vc)
.subscribe(
onNext: { [weak self] _ in
self?.delegate?.successfullyAuthorized(type: itemType)
},
onError: { [weak self] error in
if case let .detailed(errorModel)? = error as? ApplicantError {
self?.vmDelegate?.asViewController.showError(with: errorModel.errors.first?.detail ?? "")
} else {
self?.vmDelegate?.asViewController.showError(with: "Неизвестная ошибка")
}
})
.disposed(by: socialButtonsDisposeBag)
}
}
// MARK: - DataSource
extension AuthSocialSectionViewModel {
var numberOfItems: Int {
return items.count
}
func item(at index: Int) -> Item {
return items[index]
}
}
// MARK: - ListDiffable
extension AuthSocialSectionViewModel: ListDiffable {
func diffIdentifier() -> NSObjectProtocol {
return ObjectIdentifier(self).hashValue as NSObjectProtocol
}
func isEqual(toDiffableObject object: ListDiffable?) -> Bool {
return object is AuthSocialSectionViewModel
}
}
Where assembler is responsible for creating everyting, for example AuthSocialSection:
func socialSection(delegate: AuthSocialSectionDelegate?) -> AuthSocialSectionViewModel {
let vm = AuthSocialSectionViewModel(api3ProfileFacade: api3ProfileFacade,
analyticsFacade: analyticsFacade)
vm.delegate = delegate
return vm
}
How can I properly debug this issue? Any advice or help is really appreciated
Found an issue in AuthSocialSectionController. Somehow passing viewController from IGList context through delegates caused memory issues. When I commented out the viewModel.vmDelegate = self the issue was gone.
That explains why the AuthViewModel was deallocating properly when I hit close button without attempting to authorize. Only when I hit authorize, that viewController property was called.
Thanks for help #vpoltave
This lines from your AuthViewController can this cause leaks?
// adapter has viewController: self
lazy var adapter: ListAdapter
= ListAdapter(updater: ListAdapterUpdater(), viewController: self, workingRangeSize: 0)
fileprivate lazy var previewProxy: SJListPreviewProxy = {
// capture self.adapter ?
SJListPreviewProxy(adapter: adapter)
}()
I'm not sure, but at least you can try :)
UPDATE
I was wondering about this lazy closures and self inside, it won't create retain cycle because lazy initialization are #nonescaping.
I try to implement search behavior like in Xcode: if you enter something in search field, icon changes color.
I delegate both searchFieldDidStartSearching and searchFieldDidEndSearching to controller and change the image.
The problem is icon's image changes only when window lose it's focus.
class ViewController: NSViewController {
#IBOutlet weak var searchField: NSSearchField!
func searchFieldDidStartSearching(_ sender: NSSearchField) {
print("\(#function)")
(searchField.cell as! NSSearchFieldCell).searchButtonCell?.image = NSImage.init(named: "NSActionTemplate")
}
func searchFieldDidEndSearching(_ sender: NSSearchField) {
print("\(#function)")
(searchField.cell as! NSSearchFieldCell).searchButtonCell?.image = NSImage.init(named: "NSHomeTemplate")
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override var representedObject: Any? {
didSet {
// Update the view, if already loaded.
}
}
}
Thanks in advance for any ideas/suggestions.
Although I don't know the reason, it works:
NSApp.mainWindow?.resignMain()
NSApp.mainWindow?.becomeMain()
Here is the whole code:
class MyViewController: NSViewController {
private lazy var searchField: NSSearchField = {
let searchField = NSSearchField(string: "")
if let searchButtonCell = searchField.searchButtonCell {
searchButtonCell.setButtonType(.toggle)
let filterImage = #imageLiteral(resourceName: "filter")
searchButtonCell.image = filterImage.tinted(with: .systemGray)
searchButtonCell.alternateImage = filterImage.tinted(with: .systemBlue)
}
searchField.focusRingType = .none
searchField.bezelStyle = .roundedBezel
searchField.delegate = self
return searchField
}()
...
}
extension MyViewController: NSSearchFieldDelegate {
func searchFieldDidStartSearching(_ sender: NSSearchField) {
sender.searchable = true
}
func searchFieldDidEndSearching(_ sender: NSSearchField) {
sender.searchable = false
}
}
extension NSSearchField {
var searchButtonCell: NSButtonCell? {
(self.cell as? NSSearchFieldCell)?.searchButtonCell
}
var searchable: Bool {
get {
self.searchButtonCell?.state == .on
}
set {
self.searchButtonCell?.state = newValue ? .on : .off
self.refreshSearchIcon()
}
}
private func refreshSearchIcon() {
NSApp.mainWindow?.resignMain()
NSApp.mainWindow?.becomeMain()
}
}
extension NSImage {
func tinted(with color: NSColor) -> NSImage? {
guard let image = self.copy() as? NSImage else { return nil }
image.lockFocus()
color.set()
NSRect(origin: NSZeroPoint, size: self.size).fill(using: .sourceAtop)
image.unlockFocus()
image.isTemplate = false
return image
}
}
I was having the same issue. A simple override fixed this issue for me
extension NSSearchField{
open override func draw(_ dirtyRect: NSRect) {
super.draw(dirtyRect)
}
}
As you can see when you click inside the view it's still focussed on the search text field(as you can still type in it after you clicked underneath it). Since the change image is on when it loses focus, you should check if you clicked outside of the text field.
Solve problem by subclassing NSSearchFieldCell and assign this class to field's cell.
You don't even need to subclass NSSearchFieldCell.
When you create your NSSearchField from code, you can do something like this:
if let searchFieldCell = searchField.cell as? NSSearchFieldCell {
let image = NSImage(named: "YourImageName")
searchFieldCell.searchButtonCell?.image = image
searchFieldCell.searchButtonCell?.alternateImage = image // Optionally
}
If you're using storyboards, you can do the same in didSet of your #IBOutlet.
I've tried use QLPreviewController for file(.txt, .pdf, .docx, .xlsx, etc.) preview in my iOS project, but it is not working well in iOS 11: it shows blank page whatever use device or simulator. In iOS 10.3.1(simulator) it is working well, and everything is fine.
The below is the detail informations:
Environment:
Xcode version: 8.3.3, 9.0.1
Device: iPhone 7 Plus, Simulator
iOS version: 11.0.3(iPhone 7 Plus), 10.3.1(Simulator), 11.0.1(Simulator)
Swift version: 3.1/3.2
Code
import UIKit
import QuickLook
class QuickViewController: UIViewController {
var url: String!
var filePath: URL!
var msg: Message! {
didSet {
url = msg.content
// create document folder url
let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
// let tempDirectory = URL(fileURLWithPath: NSTemporaryDirectory())
filePath = documentsURL.appendingPathComponent((msg.content as NSString).lastPathComponent)
}
}
#IBOutlet weak var contentView: UIView!
// MARK: - Initialisation
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
loafFile()
}
func loafFile() {
if FileManager.default.fileExists(atPath: filePath.path) {
quickLookFile()
} else {
AppManager_Inst.download(url: "\(url!)", destinationUrl: filePath, completion: { [unowned self](succeed, msg) in
if succeed {
self.quickLookFile()
} else {
print(msg)
}
})
}
}
func quickLookFile() {
print(filePath.path)
/// Trying to read the file via FileManager to check if the filePath is correct or not
let data = FileManager.default.contents(atPath: filePath.path)
print(data)
if QLPreviewController.canPreview(filePath as NSURL) {
let QLController = QLPreviewController()
QLController.delegate = self
QLController.dataSource = self
QLController.view.frame = self.contentView.frame
self.view.addSubview(QLController.view)
} else {
print("file cannot to preview")
}
}
}
extension QuickViewController: QLPreviewControllerDataSource, QLPreviewControllerDelegate {
// QLPreviewControllerDataSource
func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
return 1
}
func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
return filePath as NSURL
}
// QLPreviewControllerDelegate
func previewController(_ controller: QLPreviewController, shouldOpen url: URL, for item: QLPreviewItem) -> Bool {
return true
}
}
I'm not sure what I missing or something wrong here, please help.
p.s.: I'll trying the code with iPhone 5c(iOS 10.3.1) later, and the result should update to here once I've done it.
You did not add the current viewController as the parent class of the QLPreviewController()
Just add QLController.didMove(toParentViewController: self) after adding it to the self.view
I think this should solve your issue.