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Fix #213: app now clears clipboard in 45s

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This commit is contained in:
Yishi Lin 2018-09-25 00:51:18 +08:00
parent a849b667dc
commit 3cc2182bc0
2 changed files with 11 additions and 22 deletions
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31
pass/Helpers/SecurePasteboard.swift
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@ -11,7 +11,7 @@ import UIKit
class SecurePasteboard {
public static let shared = SecurePasteboard()
private var backgroundTaskID: UIBackgroundTaskIdentifier? = nil
private var backgroundTaskID = UIBackgroundTaskInvalid
func copy(textToCopy: String?, expirationTime: Double = 45) {
// copy to the pasteboard
@ -23,32 +23,21 @@ class SecurePasteboard {
}
// exit the existing background task, if any
if let backgroundTaskID = backgroundTaskID {
UIApplication.shared.endBackgroundTask(backgroundTaskID)
self.backgroundTaskID = nil
if backgroundTaskID != UIBackgroundTaskInvalid {
UIApplication.shared.endBackgroundTask(UIBackgroundTaskInvalid)
self.backgroundTaskID = UIBackgroundTaskInvalid
}
backgroundTaskID = UIApplication.shared.beginBackgroundTask(expirationHandler: { [weak self] in
guard let taskID = self?.backgroundTaskID else {
return
}
if textToCopy == UIPasteboard.general.string {
UIPasteboard.general.string = ""
}
UIApplication.shared.endBackgroundTask(taskID)
UIPasteboard.general.string = ""
UIApplication.shared.endBackgroundTask(UIBackgroundTaskInvalid)
self?.backgroundTaskID = UIBackgroundTaskInvalid
})
DispatchQueue.global(qos: .utility).asyncAfter(deadline: .now() + expirationTime) { [weak self] in
guard let strongSelf = self else {
return
}
if textToCopy == UIPasteboard.general.string {
UIPasteboard.general.string = ""
}
if let backgroundTaskID = strongSelf.backgroundTaskID {
UIApplication.shared.endBackgroundTask(backgroundTaskID)
strongSelf.backgroundTaskID = nil
}
UIPasteboard.general.string = ""
UIApplication.shared.endBackgroundTask(UIBackgroundTaskInvalid)
self?.backgroundTaskID = UIBackgroundTaskInvalid
}
}