704 lines
22 KiB
Swift
704 lines
22 KiB
Swift
//
|
||
// SidebarOutlineDataSource.swift
|
||
// NetNewsWire
|
||
//
|
||
// Created by Brent Simmons on 2/12/18.
|
||
// Copyright © 2018 Ranchero Software. All rights reserved.
|
||
//
|
||
|
||
import AppKit
|
||
import RSTree
|
||
import Articles
|
||
import RSCore
|
||
import Account
|
||
|
||
@objc final class SidebarOutlineDataSource: NSObject, NSOutlineViewDataSource {
|
||
|
||
let treeController: TreeController
|
||
static let dragOperationNone = NSDragOperation(rawValue: 0)
|
||
private var draggedNodes: Set<Node>? = nil
|
||
|
||
init(treeController: TreeController) {
|
||
self.treeController = treeController
|
||
}
|
||
|
||
// MARK: - NSOutlineViewDataSource
|
||
|
||
func outlineView(_ outlineView: NSOutlineView, numberOfChildrenOfItem item: Any?) -> Int {
|
||
|
||
return nodeForItem(item).numberOfChildNodes
|
||
}
|
||
|
||
func outlineView(_ outlineView: NSOutlineView, child index: Int, ofItem item: Any?) -> Any {
|
||
|
||
return nodeForItem(item).childNodes[index]
|
||
}
|
||
|
||
func outlineView(_ outlineView: NSOutlineView, isItemExpandable item: Any) -> Bool {
|
||
|
||
return nodeForItem(item).canHaveChildNodes
|
||
}
|
||
|
||
func outlineView(_ outlineView: NSOutlineView, pasteboardWriterForItem item: Any) -> NSPasteboardWriting? {
|
||
let node = nodeForItem(item)
|
||
guard nodeRepresentsDraggableItem(node) else {
|
||
return nil
|
||
}
|
||
return (node.representedObject as? PasteboardWriterOwner)?.pasteboardWriter
|
||
}
|
||
|
||
// MARK: - Drag and Drop
|
||
|
||
func outlineView(_ outlineView: NSOutlineView, draggingSession session: NSDraggingSession, willBeginAt screenPoint: NSPoint, forItems draggedItems: [Any]) {
|
||
draggedNodes = Set(draggedItems.map { nodeForItem($0) })
|
||
}
|
||
|
||
func outlineView(_ outlineView: NSOutlineView, validateDrop info: NSDraggingInfo, proposedItem item: Any?, proposedChildIndex index: Int) -> NSDragOperation {
|
||
let draggedFolders = PasteboardFolder.pasteboardFolders(with: info.draggingPasteboard)
|
||
let draggedFeeds = PasteboardFeed.pasteboardFeeds(with: info.draggingPasteboard)
|
||
if (draggedFolders == nil && draggedFeeds == nil) || (draggedFolders != nil && draggedFeeds != nil) {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
let parentNode = nodeForItem(item)
|
||
|
||
if let draggedFolders = draggedFolders {
|
||
if draggedFolders.count == 1 {
|
||
return validateLocalFolderDrop(outlineView, draggedFolders.first!, parentNode, index)
|
||
} else {
|
||
return validateLocalFoldersDrop(outlineView, draggedFolders, parentNode, index)
|
||
}
|
||
}
|
||
|
||
if let draggedFeeds = draggedFeeds {
|
||
let contentsType = draggedFeedContentsType(draggedFeeds)
|
||
|
||
switch contentsType {
|
||
case .singleNonLocal:
|
||
let draggedNonLocalFeed = singleNonLocalFeed(from: draggedFeeds)!
|
||
return validateSingleNonLocalFeedDrop(outlineView, draggedNonLocalFeed, parentNode, index)
|
||
case .singleLocal:
|
||
let draggedFeed = draggedFeeds.first!
|
||
return validateSingleLocalFeedDrop(outlineView, draggedFeed, parentNode, index)
|
||
case .multipleLocal:
|
||
return validateLocalFeedsDrop(outlineView, draggedFeeds, parentNode, index)
|
||
case .multipleNonLocal, .mixed, .empty:
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
}
|
||
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
|
||
func outlineView(_ outlineView: NSOutlineView, acceptDrop info: NSDraggingInfo, item: Any?, childIndex index: Int) -> Bool {
|
||
let draggedFolders = PasteboardFolder.pasteboardFolders(with: info.draggingPasteboard)
|
||
let draggedFeeds = PasteboardFeed.pasteboardFeeds(with: info.draggingPasteboard)
|
||
if (draggedFolders == nil && draggedFeeds == nil) || (draggedFolders != nil && draggedFeeds != nil) {
|
||
return false
|
||
}
|
||
let parentNode = nodeForItem(item)
|
||
|
||
if let draggedFolders = draggedFolders {
|
||
return acceptLocalFoldersDrop(outlineView, draggedFolders, parentNode, index)
|
||
}
|
||
|
||
if let draggedFeeds = draggedFeeds {
|
||
let contentsType = draggedFeedContentsType(draggedFeeds)
|
||
|
||
switch contentsType {
|
||
case .singleNonLocal:
|
||
let draggedNonLocalFeed = singleNonLocalFeed(from: draggedFeeds)!
|
||
return acceptSingleNonLocalFeedDrop(outlineView, draggedNonLocalFeed, parentNode, index)
|
||
case .singleLocal:
|
||
return acceptLocalFeedsDrop(outlineView, draggedFeeds, parentNode, index)
|
||
case .multipleLocal:
|
||
return acceptLocalFeedsDrop(outlineView, draggedFeeds, parentNode, index)
|
||
case .multipleNonLocal, .mixed, .empty:
|
||
return false
|
||
}
|
||
}
|
||
|
||
return false
|
||
}
|
||
}
|
||
|
||
// MARK: - Private
|
||
|
||
private extension SidebarOutlineDataSource {
|
||
|
||
func nodeForItem(_ item: Any?) -> Node {
|
||
if item == nil {
|
||
return treeController.rootNode
|
||
}
|
||
return item as! Node
|
||
}
|
||
|
||
func nodeRepresentsDraggableItem(_ node: Node) -> Bool {
|
||
// Don’t allow PseudoFeed to be dragged.
|
||
// This will have to be revisited later. For instance,
|
||
// user-created smart feeds should be draggable, maybe.
|
||
return node.representedObject is Folder || node.representedObject is Feed
|
||
}
|
||
|
||
// MARK: - Drag and Drop
|
||
|
||
enum DraggedFeedsContentsType {
|
||
case empty, singleLocal, singleNonLocal, multipleLocal, multipleNonLocal, mixed
|
||
}
|
||
|
||
func draggedFeedContentsType(_ draggedFeeds: Set<PasteboardFeed>) -> DraggedFeedsContentsType {
|
||
if draggedFeeds.isEmpty {
|
||
return .empty
|
||
}
|
||
if draggedFeeds.count == 1 {
|
||
let feed = draggedFeeds.first!
|
||
return feed.isLocalFeed ? .singleLocal : .singleNonLocal
|
||
}
|
||
|
||
var hasLocalFeed = false
|
||
var hasNonLocalFeed = false
|
||
for feed in draggedFeeds {
|
||
if feed.isLocalFeed {
|
||
hasLocalFeed = true
|
||
}
|
||
else {
|
||
hasNonLocalFeed = true
|
||
}
|
||
if hasLocalFeed && hasNonLocalFeed {
|
||
return .mixed
|
||
}
|
||
}
|
||
if hasLocalFeed {
|
||
return .multipleLocal
|
||
}
|
||
return .multipleNonLocal
|
||
}
|
||
|
||
func singleNonLocalFeed(from feeds: Set<PasteboardFeed>) -> PasteboardFeed? {
|
||
guard feeds.count == 1, let feed = feeds.first else {
|
||
return nil
|
||
}
|
||
return feed.isLocalFeed ? nil : feed
|
||
}
|
||
|
||
func validateSingleNonLocalFeedDrop(_ outlineView: NSOutlineView, _ draggedFeed: PasteboardFeed, _ parentNode: Node, _ index: Int) -> NSDragOperation {
|
||
// A non-local feed should always drag on to an Account or Folder node, with NSOutlineViewDropOnItemIndex — since we don’t know where it would sort till we read the feed.
|
||
guard let dropTargetNode = ancestorThatCanAcceptNonLocalFeed(parentNode) else {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
if parentNode !== dropTargetNode || index != NSOutlineViewDropOnItemIndex {
|
||
outlineView.setDropItem(dropTargetNode, dropChildIndex: NSOutlineViewDropOnItemIndex)
|
||
}
|
||
return .copy
|
||
}
|
||
|
||
func validateSingleLocalFeedDrop(_ outlineView: NSOutlineView, _ draggedFeed: PasteboardFeed, _ parentNode: Node, _ index: Int) -> NSDragOperation {
|
||
// A local feed should always drag on to an Account or Folder node, and we can provide an index.
|
||
guard let dropTargetNode = ancestorThatCanAcceptLocalFeed(parentNode) else {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
if nodeHasChildRepresentingDraggedFeed(dropTargetNode, draggedFeed) {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
if violatesTagSpecificBehavior(dropTargetNode, draggedFeed) {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
if parentNode == dropTargetNode && index == NSOutlineViewDropOnItemIndex {
|
||
return localDragOperation()
|
||
}
|
||
let updatedIndex = indexWhereDraggedFeedWouldAppear(dropTargetNode, draggedFeed)
|
||
if parentNode !== dropTargetNode || index != updatedIndex {
|
||
outlineView.setDropItem(dropTargetNode, dropChildIndex: updatedIndex)
|
||
}
|
||
return localDragOperation()
|
||
}
|
||
|
||
func validateLocalFeedsDrop(_ outlineView: NSOutlineView, _ draggedFeeds: Set<PasteboardFeed>, _ parentNode: Node, _ index: Int) -> NSDragOperation {
|
||
// Local feeds should always drag on to an Account or Folder node, and index should be NSOutlineViewDropOnItemIndex since we can’t provide multiple indexes.
|
||
guard let dropTargetNode = ancestorThatCanAcceptLocalFeed(parentNode) else {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
if nodeHasChildRepresentingAnyDraggedFeed(dropTargetNode, draggedFeeds) {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
if violatesTagSpecificBehavior(dropTargetNode, draggedFeeds) {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
if parentNode !== dropTargetNode || index != NSOutlineViewDropOnItemIndex {
|
||
outlineView.setDropItem(dropTargetNode, dropChildIndex: NSOutlineViewDropOnItemIndex)
|
||
}
|
||
return localDragOperation()
|
||
}
|
||
|
||
func localDragOperation() -> NSDragOperation {
|
||
if NSApplication.shared.currentEvent?.modifierFlags.contains(.option) ?? false {
|
||
return .copy
|
||
} else {
|
||
return .move
|
||
}
|
||
}
|
||
|
||
func accountForNode(_ node: Node) -> Account? {
|
||
if let account = node.representedObject as? Account {
|
||
return account
|
||
}
|
||
if let folder = node.representedObject as? Folder {
|
||
return folder.account
|
||
}
|
||
if let feed = node.representedObject as? Feed {
|
||
return feed.account
|
||
}
|
||
return nil
|
||
}
|
||
|
||
func commonAccountsFor(_ nodes: Set<Node>) -> Set<Account> {
|
||
|
||
var accounts = Set<Account>()
|
||
for node in nodes {
|
||
guard let oneAccount = accountForNode(node) else {
|
||
continue
|
||
}
|
||
accounts.insert(oneAccount)
|
||
}
|
||
return accounts
|
||
}
|
||
|
||
func accountHasFolderRepresentingAnyDraggedFolders(_ account: Account, _ draggedFolders: Set<PasteboardFolder>) -> Bool {
|
||
for draggedFolder in draggedFolders {
|
||
if account.existingFolder(with: draggedFolder.name) != nil {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func validateLocalFolderDrop(_ outlineView: NSOutlineView, _ draggedFolder: PasteboardFolder, _ parentNode: Node, _ index: Int) -> NSDragOperation {
|
||
guard let dropAccount = parentNode.representedObject as? Account, dropAccount.accountID != draggedFolder.accountID else {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
if accountHasFolderRepresentingAnyDraggedFolders(dropAccount, Set([draggedFolder])) {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
let updatedIndex = indexWhereDraggedFolderWouldAppear(parentNode, draggedFolder)
|
||
if index != updatedIndex {
|
||
outlineView.setDropItem(parentNode, dropChildIndex: updatedIndex)
|
||
}
|
||
return localDragOperation()
|
||
}
|
||
|
||
func validateLocalFoldersDrop(_ outlineView: NSOutlineView, _ draggedFolders: Set<PasteboardFolder>, _ parentNode: Node, _ index: Int) -> NSDragOperation {
|
||
guard let dropAccount = parentNode.representedObject as? Account else {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
if accountHasFolderRepresentingAnyDraggedFolders(dropAccount, draggedFolders) {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
for draggedFolder in draggedFolders {
|
||
if dropAccount.accountID == draggedFolder.accountID {
|
||
return SidebarOutlineDataSource.dragOperationNone
|
||
}
|
||
}
|
||
if index != NSOutlineViewDropOnItemIndex {
|
||
outlineView.setDropItem(parentNode, dropChildIndex: NSOutlineViewDropOnItemIndex)
|
||
}
|
||
return localDragOperation()
|
||
}
|
||
|
||
func copyFeedInAccount(node: Node, to parentNode: Node) {
|
||
guard let feed = node.representedObject as? Feed, let destination = parentNode.representedObject as? Container else {
|
||
return
|
||
}
|
||
|
||
destination.account?.addFeed(feed, to: destination) { result in
|
||
switch result {
|
||
case .success:
|
||
break
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
}
|
||
|
||
func moveFeedInAccount(node: Node, to parentNode: Node) {
|
||
guard let feed = node.representedObject as? Feed,
|
||
let source = node.parent?.representedObject as? Container,
|
||
let destination = parentNode.representedObject as? Container else {
|
||
return
|
||
}
|
||
|
||
BatchUpdate.shared.start()
|
||
source.account?.moveFeed(feed, from: source, to: destination) { result in
|
||
BatchUpdate.shared.end()
|
||
switch result {
|
||
case .success:
|
||
break
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
}
|
||
|
||
func copyFeedBetweenAccounts(node: Node, to parentNode: Node) {
|
||
guard let feed = node.representedObject as? Feed,
|
||
let destinationAccount = nodeAccount(parentNode),
|
||
let destinationContainer = parentNode.representedObject as? Container else {
|
||
return
|
||
}
|
||
|
||
if let existingFeed = destinationAccount.existingFeed(withURL: feed.url) {
|
||
destinationAccount.addFeed(existingFeed, to: destinationContainer) { result in
|
||
switch result {
|
||
case .success:
|
||
break
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
} else {
|
||
destinationAccount.createFeed(url: feed.url, name: feed.editedName, container: destinationContainer) { result in
|
||
switch result {
|
||
case .success:
|
||
break
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
func moveFeedBetweenAccounts(node: Node, to parentNode: Node) {
|
||
guard let feed = node.representedObject as? Feed,
|
||
let sourceAccount = nodeAccount(node),
|
||
let sourceContainer = node.parent?.representedObject as? Container,
|
||
let destinationAccount = nodeAccount(parentNode),
|
||
let destinationContainer = parentNode.representedObject as? Container else {
|
||
return
|
||
}
|
||
|
||
if let existingFeed = destinationAccount.existingFeed(withURL: feed.url) {
|
||
|
||
BatchUpdate.shared.start()
|
||
destinationAccount.addFeed(existingFeed, to: destinationContainer) { result in
|
||
switch result {
|
||
case .success:
|
||
sourceAccount.removeFeed(feed, from: sourceContainer) { result in
|
||
BatchUpdate.shared.end()
|
||
switch result {
|
||
case .success:
|
||
break
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
case .failure(let error):
|
||
BatchUpdate.shared.end()
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
|
||
} else {
|
||
|
||
BatchUpdate.shared.start()
|
||
destinationAccount.createFeed(url: feed.url, name: feed.editedName, container: destinationContainer) { result in
|
||
switch result {
|
||
case .success:
|
||
sourceAccount.removeFeed(feed, from: sourceContainer) { result in
|
||
BatchUpdate.shared.end()
|
||
switch result {
|
||
case .success:
|
||
break
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
case .failure(let error):
|
||
BatchUpdate.shared.end()
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
func acceptLocalFeedsDrop(_ outlineView: NSOutlineView, _ draggedFeeds: Set<PasteboardFeed>, _ parentNode: Node, _ index: Int) -> Bool {
|
||
guard let draggedNodes = draggedNodes else {
|
||
return false
|
||
}
|
||
|
||
draggedNodes.forEach { node in
|
||
if sameAccount(node, parentNode) {
|
||
if NSApplication.shared.currentEvent?.modifierFlags.contains(.option) ?? false {
|
||
copyFeedInAccount(node: node, to: parentNode)
|
||
} else {
|
||
moveFeedInAccount(node: node, to: parentNode)
|
||
}
|
||
} else {
|
||
if NSApplication.shared.currentEvent?.modifierFlags.contains(.option) ?? false {
|
||
copyFeedBetweenAccounts(node: node, to: parentNode)
|
||
} else {
|
||
moveFeedBetweenAccounts(node: node, to: parentNode)
|
||
}
|
||
}
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
func nodeIsAccountOrFolder(_ node: Node) -> Bool {
|
||
return node.representedObject is Account || node.representedObject is Folder
|
||
}
|
||
|
||
func nodeIsDropTarget(_ node: Node) -> Bool {
|
||
return node.canHaveChildNodes && nodeIsAccountOrFolder(node)
|
||
}
|
||
|
||
func ancestorThatCanAcceptLocalFeed(_ node: Node) -> Node? {
|
||
if nodeIsDropTarget(node) {
|
||
return node
|
||
}
|
||
guard let parentNode = node.parent else {
|
||
return nil
|
||
}
|
||
return ancestorThatCanAcceptLocalFeed(parentNode)
|
||
}
|
||
|
||
func ancestorThatCanAcceptNonLocalFeed(_ node: Node) -> Node? {
|
||
// Default to the On My Mac account, if needed, so we can always accept a nonlocal feed drop.
|
||
if nodeIsDropTarget(node) {
|
||
return node
|
||
}
|
||
guard let parentNode = node.parent else {
|
||
if let onMyMacAccountNode = treeController.nodeInTreeRepresentingObject(AccountManager.shared.defaultAccount) {
|
||
return onMyMacAccountNode
|
||
}
|
||
return nil
|
||
}
|
||
return ancestorThatCanAcceptNonLocalFeed(parentNode)
|
||
}
|
||
|
||
func copyFolderBetweenAccounts(node: Node, to parentNode: Node) {
|
||
guard let sourceFolder = node.representedObject as? Folder,
|
||
let destinationAccount = nodeAccount(parentNode) else {
|
||
return
|
||
}
|
||
replicateFolder(sourceFolder, destinationAccount: destinationAccount, completion: {})
|
||
}
|
||
|
||
func moveFolderBetweenAccounts(node: Node, to parentNode: Node) {
|
||
guard let sourceFolder = node.representedObject as? Folder,
|
||
let sourceAccount = nodeAccount(node),
|
||
let destinationAccount = nodeAccount(parentNode) else {
|
||
return
|
||
}
|
||
|
||
BatchUpdate.shared.start()
|
||
replicateFolder(sourceFolder, destinationAccount: destinationAccount) {
|
||
sourceAccount.removeFolder(sourceFolder) { result in
|
||
BatchUpdate.shared.end()
|
||
switch result {
|
||
case .success:
|
||
break
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
func replicateFolder(_ folder: Folder, destinationAccount: Account, completion: @escaping () -> Void) {
|
||
destinationAccount.addFolder(folder.name ?? "") { result in
|
||
switch result {
|
||
case .success(let destinationFolder):
|
||
let group = DispatchGroup()
|
||
for feed in folder.topLevelFeeds {
|
||
if let existingFeed = destinationAccount.existingFeed(withURL: feed.url) {
|
||
group.enter()
|
||
destinationAccount.addFeed(existingFeed, to: destinationFolder) { result in
|
||
group.leave()
|
||
switch result {
|
||
case .success:
|
||
break
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
} else {
|
||
group.enter()
|
||
destinationAccount.createFeed(url: feed.url, name: feed.editedName, container: destinationFolder) { result in
|
||
group.leave()
|
||
switch result {
|
||
case .success:
|
||
break
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
group.notify(queue: DispatchQueue.main) {
|
||
completion()
|
||
}
|
||
case .failure(let error):
|
||
NSApplication.shared.presentError(error)
|
||
completion()
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
func acceptLocalFoldersDrop(_ outlineView: NSOutlineView, _ draggedFolders: Set<PasteboardFolder>, _ parentNode: Node, _ index: Int) -> Bool {
|
||
guard let draggedNodes = draggedNodes else {
|
||
return false
|
||
}
|
||
|
||
draggedNodes.forEach { node in
|
||
if !sameAccount(node, parentNode) {
|
||
if NSApplication.shared.currentEvent?.modifierFlags.contains(.option) ?? false {
|
||
copyFolderBetweenAccounts(node: node, to: parentNode)
|
||
} else {
|
||
moveFolderBetweenAccounts(node: node, to: parentNode)
|
||
}
|
||
}
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
func acceptSingleNonLocalFeedDrop(_ outlineView: NSOutlineView, _ draggedFeed: PasteboardFeed, _ parentNode: Node, _ index: Int) -> Bool {
|
||
guard nodeIsDropTarget(parentNode), index == NSOutlineViewDropOnItemIndex else {
|
||
return false
|
||
}
|
||
|
||
// Show the add-feed sheet.
|
||
if let account = parentNode.representedObject as? Account {
|
||
appDelegate.addFeed(draggedFeed.url, name: draggedFeed.editedName ?? draggedFeed.name, account: account, folder: nil)
|
||
} else {
|
||
let account = parentNode.parent?.representedObject as? Account
|
||
let folder = parentNode.representedObject as? Folder
|
||
appDelegate.addFeed(draggedFeed.url, name: draggedFeed.editedName ?? draggedFeed.name, account: account, folder: folder)
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
func nodeHasChildRepresentingDraggedFeed(_ parentNode: Node, _ draggedFeed: PasteboardFeed) -> Bool {
|
||
return nodeHasChildRepresentingAnyDraggedFeed(parentNode, Set([draggedFeed]))
|
||
}
|
||
|
||
func nodeRepresentsAnyDraggedFeed(_ node: Node, _ draggedFeeds: Set<PasteboardFeed>) -> Bool {
|
||
guard let feed = node.representedObject as? Feed else {
|
||
return false
|
||
}
|
||
for draggedFeed in draggedFeeds {
|
||
if feed.url == draggedFeed.url {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func sameAccount(_ node: Node, _ parentNode: Node) -> Bool {
|
||
if let accountID = nodeAccountID(node), let parentAccountID = nodeAccountID(parentNode) {
|
||
if accountID == parentAccountID {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func nodeAccount(_ node: Node) -> Account? {
|
||
if let account = node.representedObject as? Account {
|
||
return account
|
||
} else if let folder = node.representedObject as? Folder {
|
||
return folder.account
|
||
} else if let feed = node.representedObject as? Feed {
|
||
return feed.account
|
||
} else {
|
||
return nil
|
||
}
|
||
|
||
}
|
||
|
||
func nodeAccountID(_ node: Node) -> String? {
|
||
return nodeAccount(node)?.accountID
|
||
}
|
||
|
||
func nodeHasChildRepresentingAnyDraggedFeed(_ parentNode: Node, _ draggedFeeds: Set<PasteboardFeed>) -> Bool {
|
||
for node in parentNode.childNodes {
|
||
if nodeRepresentsAnyDraggedFeed(node, draggedFeeds) {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func violatesTagSpecificBehavior(_ parentNode: Node, _ draggedFeed: PasteboardFeed) -> Bool {
|
||
return violatesTagSpecificBehavior(parentNode, Set([draggedFeed]))
|
||
}
|
||
|
||
func violatesTagSpecificBehavior(_ parentNode: Node, _ draggedFeeds: Set<PasteboardFeed>) -> Bool {
|
||
guard let parentAccount = nodeAccount(parentNode), parentAccount.isTagBasedSystem else {
|
||
return false
|
||
}
|
||
|
||
for draggedFeed in draggedFeeds {
|
||
if parentAccount.accountID != draggedFeed.accountID {
|
||
return false
|
||
}
|
||
}
|
||
|
||
// Can't copy to the account when using tags
|
||
if parentNode.representedObject is Account && (NSApplication.shared.currentEvent?.modifierFlags.contains(.option) ?? false) {
|
||
return true
|
||
}
|
||
|
||
return false
|
||
}
|
||
|
||
func indexWhereDraggedFeedWouldAppear(_ parentNode: Node, _ draggedFeed: PasteboardFeed) -> Int {
|
||
let draggedFeedWrapper = PasteboardFeedObjectWrapper(pasteboardFeed: draggedFeed)
|
||
let draggedFeedNode = Node(representedObject: draggedFeedWrapper, parent: nil)
|
||
let nodes = parentNode.childNodes + [draggedFeedNode]
|
||
|
||
// Revisit if the tree controller can ever be sorted in some other way.
|
||
let sortedNodes = nodes.sortedAlphabeticallyWithFoldersAtEnd()
|
||
let index = sortedNodes.firstIndex(of: draggedFeedNode)!
|
||
return index
|
||
}
|
||
|
||
func indexWhereDraggedFolderWouldAppear(_ parentNode: Node, _ draggedFolder: PasteboardFolder) -> Int {
|
||
let draggedFolderWrapper = PasteboardFolderObjectWrapper(pasteboardFolder: draggedFolder)
|
||
let draggedFolderNode = Node(representedObject: draggedFolderWrapper, parent: nil)
|
||
draggedFolderNode.canHaveChildNodes = true
|
||
let nodes = parentNode.childNodes + [draggedFolderNode]
|
||
|
||
// Revisit if the tree controller can ever be sorted in some other way.
|
||
let sortedNodes = nodes.sortedAlphabeticallyWithFoldersAtEnd()
|
||
let index = sortedNodes.firstIndex(of: draggedFolderNode)!
|
||
return index
|
||
}
|
||
}
|
||
|
||
final class PasteboardFeedObjectWrapper: DisplayNameProvider {
|
||
|
||
var nameForDisplay: String {
|
||
return pasteboardFeed.editedName ?? pasteboardFeed.name ?? ""
|
||
}
|
||
let pasteboardFeed: PasteboardFeed
|
||
|
||
init(pasteboardFeed: PasteboardFeed) {
|
||
self.pasteboardFeed = pasteboardFeed
|
||
}
|
||
}
|
||
|
||
final class PasteboardFolderObjectWrapper: DisplayNameProvider {
|
||
|
||
var nameForDisplay: String {
|
||
return pasteboardFolder.name
|
||
}
|
||
let pasteboardFolder: PasteboardFolder
|
||
|
||
init(pasteboardFolder: PasteboardFolder) {
|
||
self.pasteboardFolder = pasteboardFolder
|
||
}
|
||
}
|