Initial
This commit is contained in:
relikd
21
QLPreview/Base.lproj/PreviewViewController.xib
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21
QLPreview/Base.lproj/PreviewViewController.xib
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<?xml version="1.0" encoding="UTF-8"?>
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<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="11762" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
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<dependencies>
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<deployment identifier="macosx"/>
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<plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="11762"/>
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<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
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</dependencies>
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<objects>
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<customObject id="-2" userLabel="File's Owner" customClass="PreviewViewController" customModuleProvider="target">
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<connections>
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<outlet property="view" destination="c22-O7-iKe" id="NRM-P4-wb6"/>
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</connections>
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</customObject>
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<customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
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<customObject id="-3" userLabel="Application" customClass="NSObject"/>
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<customView id="c22-O7-iKe" userLabel="Preview View">
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<rect key="frame" x="0.0" y="0.0" width="480" height="272"/>
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<autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
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</customView>
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</objects>
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</document>
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24
QLPreview/Info.plist
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24
QLPreview/Info.plist
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>NSExtension</key>
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<dict>
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<key>NSExtensionAttributes</key>
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<dict>
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<key>QLIsDataBasedPreview</key>
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<false/>
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<key>QLSupportedContentTypes</key>
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<array>
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<string>net.daringfireball.markdown</string>
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</array>
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<key>QLSupportsSearchableItems</key>
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<false/>
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</dict>
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<key>NSExtensionPointIdentifier</key>
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<string>com.apple.quicklook.preview</string>
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<key>NSExtensionPrincipalClass</key>
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<string>$(PRODUCT_MODULE_NAME).PreviewViewController</string>
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</dict>
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</dict>
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</plist>
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10
QLPreview/Preview.entitlements
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10
QLPreview/Preview.entitlements
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>com.apple.security.temporary-exception.files.absolute-path.read-only</key>
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<array>
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<string>/</string>
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</array>
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</dict>
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</plist>
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88
QLPreview/PreviewViewController.swift
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88
QLPreview/PreviewViewController.swift
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import Cocoa
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import Quartz // QLPreviewingController
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import WebKit // WebView
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import Markdown // Document, HTMLFormatter
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//import os // OSLog
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//
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//private let log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "preview-plugin")
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extension URL {
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/// Folder where user can mofifications to html template
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static let UserModDir: URL? =
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FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first
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/// Returns `true` if file or folder exists.
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@inlinable func exists() -> Bool {
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FileManager.default.fileExists(atPath: self.path)
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}
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}
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class PreviewViewController: NSViewController, QLPreviewingController, WKNavigationDelegate {
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var url: URL? = nil
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var html: String? = nil
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override var nibName: NSNib.Name? {
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return NSNib.Name("PreviewViewController")
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}
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/// Load resource file either from user documents dir (if exists) or app bundle (default).
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func bundleFile(filename: String, ext: String) throws -> URL {
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if let userFile = URL.UserModDir?.appendingPathComponent(filename + "." + ext, isDirectory: false), userFile.exists() {
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return userFile
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}
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return Bundle.main.url(forResource: filename, withExtension: ext)!
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}
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func preparePreviewOfFile(at url: URL) async throws {
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let cssUrl = try bundleFile(filename: "markdown", ext: "css")
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let md = try Document(parsing: url)
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self.url = url
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self.html = """
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<link rel="stylesheet" type="text/css" href="\(cssUrl)" />
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</head>
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<body class="markdown-body">
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\(HTMLFormatter.format(md))
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</body>
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</html>
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"""
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// write debug output
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//try? html!.write(to: URL.UserModDir!.appendingPathComponent("debug.html", isDirectory: false), atomically: true, encoding: .utf8)
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// create web view UI
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let web = WKWebView(frame: self.view.bounds)
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web.navigationDelegate = self
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web.autoresizingMask = [.width, .height]
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self.view.addSubview(web)
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// allow read access to all files under root "/"
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let emtpy = Bundle.main.url(forResource: "empty", withExtension: "txt")!
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web.loadFileURL(emtpy, allowingReadAccessTo: URL(string: "file:///")!)
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// loadHTMLString must wait until previous request is fully loaded
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// see delegate method below
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}
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func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
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if webView.url?.lastPathComponent == "empty.txt" {
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webView.loadHTMLString(html!, baseURL: url)
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html = nil // free up memory
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}
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}
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// this should open links in external browser but it doesnt
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// func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping @MainActor (WKNavigationActionPolicy) -> Void) {
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// if navigationAction.navigationType == .linkActivated,
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// let url = navigationAction.request.url {
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// os_log(.debug, log: log, "open url %{public}@", String(describing: url))
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// NSWorkspace.shared.open(url)
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// decisionHandler(.cancel)
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// } else {
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// decisionHandler(.allow)
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// }
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// }
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}
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