NetNewsWire/Evergreen/ArticleStyles/ArticleStylesManager.swift

182 lines
4.5 KiB
Swift

//
// ArticleStylesManager.sqift
// Evergreen
//
// Created by Brent Simmons on 9/26/15.
// Copyright © 2015 Ranchero Software, LLC. All rights reserved.
//
import Foundation
import RSCore
let ArticleStyleNamesDidChangeNotification = "ArticleStyleNamesDidChangeNotification"
let CurrentArticleStyleDidChangeNotification = "CurrentArticleStyleDidChangeNotification"
private let styleKey = "style"
private let defaultStyleName = "Default"
private let stylesFolderName = "Styles"
private let stylesInResourcesFolderName = "Styles"
private let styleSuffix = ".evergreenstyle"
private let nnwStyleSuffix = ".nnwstyle"
private let cssStyleSuffix = ".css"
private let styleSuffixes = [styleSuffix, nnwStyleSuffix, cssStyleSuffix];
final class ArticleStylesManager {
static let shared = ArticleStylesManager()
private let folderPath = RSDataSubfolder(nil, stylesFolderName)!
var currentStyleName: String {
get {
return UserDefaults.standard.string(forKey: styleKey)!
}
set {
if newValue != currentStyleName {
UserDefaults.standard.set(newValue, forKey: styleKey)
}
}
}
var currentStyle: ArticleStyle {
didSet {
NotificationCenter.default.post(name: Notification.Name(rawValue: CurrentArticleStyleDidChangeNotification), object: self)
}
}
var styleNames = [defaultStyleName] {
didSet {
NotificationCenter.default.post(name: Notification.Name(rawValue: ArticleStyleNamesDidChangeNotification), object: self)
}
}
init() {
UserDefaults.standard.register(defaults: [styleKey: defaultStyleName])
//
// let defaultStylesFolder = (Bundle.main.resourcePath! as NSString).appendingPathComponent(stylesInResourcesFolderName)
// do {
// try FileManager.default.rs_copyFiles(inFolder: defaultStylesFolder, destination: folderPath)
// }
// catch {
// print(error)
// }
currentStyle = ArticleStyle.defaultStyle
updateStyleNames()
updateCurrentStyle()
NotificationCenter.default.addObserver(self, selector: #selector(applicationDidBecomeActive(_:)), name: NSApplication.didBecomeActiveNotification, object: nil)
}
// MARK: Notifications
@objc dynamic func applicationDidBecomeActive(_ note: Notification) {
updateStyleNames()
updateCurrentStyle()
}
// MARK : Internal
private func updateStyleNames() {
let updatedStyleNames = allStylePaths(folderPath).map { styleNameForPath($0) }
if updatedStyleNames != styleNames {
styleNames = updatedStyleNames
}
}
private func articleStyleWithStyleName(_ styleName: String) -> ArticleStyle? {
if styleName == defaultStyleName {
return ArticleStyle.defaultStyle
}
guard let path = pathForStyleName(styleName, folder: folderPath) else {
return nil
}
return ArticleStyle(path: path)
}
private func defaultArticleStyle() -> ArticleStyle {
return articleStyleWithStyleName(defaultStyleName)!
}
private func updateCurrentStyle() {
var styleName = currentStyleName
if !styleNames.contains(styleName) {
styleName = defaultStyleName
currentStyleName = defaultStyleName
}
var articleStyle = articleStyleWithStyleName(styleName)
if articleStyle == nil {
articleStyle = defaultArticleStyle()
currentStyleName = defaultStyleName
}
if let articleStyle = articleStyle, articleStyle != currentStyle {
currentStyle = articleStyle
}
}
}
private func allStylePaths(_ folder: String) -> [String] {
let filepaths = FileManager.default.rs_filepaths(inFolder: folder)
return filepaths.filter { fileAtPathIsStyle($0) }
}
private func fileAtPathIsStyle(_ f: String) -> Bool {
if !f.hasSuffix(styleSuffix) && !f.hasSuffix(nnwStyleSuffix) && !f.hasSuffix(cssStyleSuffix) {
return false
}
if (f as NSString).lastPathComponent.hasPrefix(".") {
return false
}
return true
}
private func filenameWithStyleSuffixRemoved(_ filename: String) -> String {
for oneSuffix in styleSuffixes {
if filename.hasSuffix(oneSuffix) {
return (filename as NSString).rs_string(byStrippingSuffix: oneSuffix, caseSensitive: false)
}
}
return filename
}
private func styleNameForPath(_ f: String) -> String {
let filename = (f as NSString).lastPathComponent
return filenameWithStyleSuffixRemoved(filename)
}
private func pathIsPathForStyleName(_ styleName: String, path: String) -> Bool {
let filename = (path as NSString).lastPathComponent
return filenameWithStyleSuffixRemoved(filename) == styleName
}
private func pathForStyleName(_ styleName: String, folder: String) -> String? {
for onePath in allStylePaths(folder) {
if pathIsPathForStyleName(styleName, path: onePath) {
return onePath
}
}
return nil
}