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Implement account specific drag and drop behaviors for iOS

This commit is contained in:
Maurice Parker 2020-10-31 20:14:50 -05:00
parent 53048ea0a0
commit 75fb3fa5fb
2 changed files with 29 additions and 0 deletions
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15
iOS/MasterFeed/Cell/MasterFeedTableViewIdentifier.swift
View File

@ -18,6 +18,7 @@ final class MasterFeedTableViewIdentifier: NSObject, NSCopying {
let isEditable: Bool
let isPsuedoFeed: Bool
let isAccount: Bool
let isFolder: Bool
let isWebFeed: Bool
@ -26,6 +27,19 @@ final class MasterFeedTableViewIdentifier: NSObject, NSCopying {
let unreadCount: Int
let childCount: Int
var account: Account? {
if isAccount, let containerID = containerID {
return AccountManager.shared.existingContainer(with: containerID) as? Account
}
if isFolder, let parentContainerID = parentContainerID {
return AccountManager.shared.existingContainer(with: parentContainerID) as? Account
}
if isWebFeed, let feedID = feedID {
return (AccountManager.shared.existingFeed(with: feedID) as? WebFeed)?.account
}
return nil
}
init(node: Node, unreadCount: Int) {
let feed = node.representedObject as! Feed
self.feedID = feed.feedID
@ -34,6 +48,7 @@ final class MasterFeedTableViewIdentifier: NSObject, NSCopying {
self.isEditable = !(node.representedObject is PseudoFeed)
self.isPsuedoFeed = node.representedObject is PseudoFeed
self.isAccount = node.representedObject is Account
self.isFolder = node.representedObject is Folder
self.isWebFeed = node.representedObject is WebFeed
self.nameForDisplay = feed.nameForDisplay

14
iOS/MasterFeed/MasterFeedViewController+Drop.swift
View File

@ -22,10 +22,24 @@ extension MasterFeedViewController: UITableViewDropDelegate {
destIndexPath.section > 0,
tableView.hasActiveDrag,
let destIdentifier = dataSource.itemIdentifier(for: destIndexPath),
let destAccount = destIdentifier.account,
let destCell = tableView.cellForRow(at: destIndexPath) else {
return UITableViewDropProposal(operation: .forbidden)
}
// Validate account specific behaviors...
if destAccount.behaviors.contains(.disallowFeedInRootFolder) && destIdentifier.isAccount {
return UITableViewDropProposal(operation: .forbidden)
}
if destAccount.behaviors.contains(.disallowFeedInMultipleFolders),
let sourceFeedID = (session.localDragSession?.items.first?.localObject as? MasterFeedTableViewIdentifier)?.feedID,
let sourceWebFeed = AccountManager.shared.existingFeed(with: sourceFeedID) as? WebFeed,
sourceWebFeed.account?.accountID != destAccount.accountID && destAccount.hasWebFeed(withURL: sourceWebFeed.url) {
return UITableViewDropProposal(operation: .forbidden)
}
// Determine the correct drop proposal
if destIdentifier.isFolder {
if session.location(in: destCell).y >= 0 {
return UITableViewDropProposal(operation: .move, intent: .insertIntoDestinationIndexPath)