113 lines
3.6 KiB
Swift
113 lines
3.6 KiB
Swift
//
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// TimelineContainerViewController.swift
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// NetNewsWire
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//
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// Created by Brent Simmons on 2/14/19.
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// Copyright © 2019 Ranchero Software. All rights reserved.
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//
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import AppKit
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import Articles
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protocol TimelineContainerViewControllerDelegate: class {
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func timelineSelectionDidChange(_: TimelineContainerViewController, articles: [Article]?, mode: TimelineSourceMode)
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}
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final class TimelineContainerViewController: NSViewController {
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@IBOutlet var containerView: TimelineContainerView!
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var currentTimelineViewController: TimelineViewController? {
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didSet {
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let view = currentTimelineViewController?.view
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if containerView.contentView === view {
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return
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}
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containerView.contentView = view
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view?.window?.recalculateKeyViewLoop()
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}
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}
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weak var delegate: TimelineContainerViewControllerDelegate?
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lazy var regularTimelineViewController = {
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return TimelineViewController(delegate: self)
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}()
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private lazy var searchTimelineViewController: TimelineViewController = {
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let viewController = TimelineViewController(delegate: self)
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viewController.showsSearchResults = true
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return viewController
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}()
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override func viewDidLoad() {
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super.viewDidLoad()
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setRepresentedObjects(nil, mode: .regular)
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showTimeline(for: .regular)
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}
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// MARK: - API
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func setRepresentedObjects(_ objects: [AnyObject]?, mode: TimelineSourceMode) {
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timelineViewController(for: mode).representedObjects = objects
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}
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func showTimeline(for mode: TimelineSourceMode) {
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currentTimelineViewController = timelineViewController(for: mode)
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}
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func regularTimelineViewControllerHasRepresentedObjects(_ representedObjects: [AnyObject]?) -> Bool {
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// Use this to find out if the regular timeline view already has the specified representedObjects.
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// This is used in determining whether a search should end.
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// The sidebar may think that the selection has changed, and therefore search should end —
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// but it could be that the regular timeline already has these representedObjects,
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// and therefore the selection hasn’t actually changed,
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// and therefore search shouldn’t end.
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// https://github.com/brentsimmons/NetNewsWire/issues/791
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if representedObjects == nil && regularTimelineViewController.representedObjects == nil {
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return true
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}
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guard let currentObjects = regularTimelineViewController.representedObjects, let representedObjects = representedObjects else {
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return false
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}
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if currentObjects.count != representedObjects.count {
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return false
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}
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for object in representedObjects {
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guard let _ = currentObjects.firstIndex(where: { $0 === object } ) else {
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return false
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}
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}
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return true
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}
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}
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extension TimelineContainerViewController: TimelineDelegate {
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func timelineSelectionDidChange(_ timelineViewController: TimelineViewController, selectedArticles: [Article]?) {
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delegate?.timelineSelectionDidChange(self, articles: selectedArticles, mode: mode(for: timelineViewController))
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}
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}
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private extension TimelineContainerViewController {
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func timelineViewController(for mode: TimelineSourceMode) -> TimelineViewController {
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switch mode {
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case .regular:
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return regularTimelineViewController
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case .search:
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return searchTimelineViewController
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}
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}
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func mode(for timelineViewController: TimelineViewController) -> TimelineSourceMode {
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if timelineViewController === regularTimelineViewController {
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return .regular
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}
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else if timelineViewController === searchTimelineViewController {
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return .search
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}
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assertionFailure("Expected timelineViewController to match either regular or search timelineViewController, but it doesn’t.")
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return .regular // Should never get here.
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}
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}
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