Correctly preview non-text files

CodeEdit.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -1,5 +1,5 @@
 {
-  "originHash" : "029e3feb7277e502c419e04acfc23af6dd70755f3984e9902ec582890724706b",
+  "originHash" : "41fcbec1ecbb7853d9ead798bba9d46f35f28767f4d41a009c8eeee022e99a84",
   "pins" : [
     {
       "identity" : "anycodable",
@@ -87,7 +87,7 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/Wouter01/LogStream",
       "state" : {
-        "revision" : "5378bafdbf5de66b69da8cca9df9d16e19bfcf89",
+        "revision" : "6f83694b2675dcf3b1cea0a52546ff4469c18282",
         "version" : "1.3.0"
       }
     },
@@ -200,5 +200,5 @@
       }
     }
   ],
-  "version" : 2
+  "version" : 3
 }

CodeEdit/Features/CodeEditUI/Views/EffectView.swift

@@ -26,7 +26,7 @@ struct EffectView: NSViewRepresentable {
     ///
     /// By setting the
     /// [`emphasized`](https://developer.apple.com/documentation/appkit/nsvisualeffectview/1644721-isemphasized)
-    /// flag the emphasized state of the material will be used if available.
+    /// flag, the emphasized state of the material will be used if available.
     ///
     /// - Parameters:
     ///   - material: The material to use. Defaults to `.headerView`.

CodeEdit/Features/CodeFile/CodeFileDocument.swift → CodeEdit/Features/Documents/CodeFileDocument.swift

@@ -1,5 +1,5 @@
 //
-//  CodeFile.swift
+//  CodeFileDocument.swift
 //  CodeEditModules/CodeFile
 //
 //  Created by Rehatbir Singh on 12/03/2022.
@@ -9,7 +9,6 @@ import AppKit
 import Foundation
 import SwiftUI
 import UniformTypeIdentifiers
-import QuickLookUI
 import CodeEditSourceEditor
 import CodeEditTextView
 import CodeEditLanguages
@@ -22,7 +21,7 @@ enum CodeFileError: Error {
 }
 
 @objc(CodeFileDocument)
-final class CodeFileDocument: NSDocument, ObservableObject, QLPreviewItem {
+final class CodeFileDocument: NSDocument, ObservableObject {
     struct OpenOptions {
         let cursorPositions: [CursorPosition]
     }
@@ -41,37 +40,33 @@ final class CodeFileDocument: NSDocument, ObservableObject, QLPreviewItem {
     /// Document-specific overridden line wrap preference.
     @Published var wrapLines: Bool?
 
-    /*
-     This is the main type of the document.
-     For example, if the file is end with '.png', it will be an image,
-     if the file is end with '.py', it will be a text file.
-     If text content is not empty, return text
-     If its neither image or text, this could be nil.
-    */
-    var typeOfFile: UTType? {
+    /// The type of data this document contains.
+    ///
+    /// If for example, the file ends with `.py`, its type is a text file.
+    /// Or if it ends with `.png`, then it is an image.
+    /// Same goes for PDF and video formats.
+    ///
+    /// Also, if the text content is not empty, it is a text file.
+    ///
+    /// - Note: The UTType doesn't necessarily mean the file extension, it can be the MIME
+    /// type or any other form of data representation.
+    var utType: UTType? {
         if !self.content.isEmpty {
-            return UTType.text
+            return .text
         }
         guard let fileType, let type = UTType(fileType) else {
             return nil
         }
-        if type.conforms(to: UTType.image) {
-            return UTType.image
+        if type.conforms(to: .text) {
+            return .text
         }
-        if type.conforms(to: UTType.text) {
-            return UTType.text
+        if type.conforms(to: .image) {
+            return .image
         }
-        if type.conforms(to: .data) {
-            return .data
+        if type.conforms(to: .pdf) {
+            return .pdf
         }
-        return nil
-    }
-
-    /*
-     This is the QLPreviewItemURL
-     */
-    var previewItemURL: URL? {
-        fileURL
+        return type
     }
 
     /// Specify options for opening the file such as the initial cursor positions.

CodeEdit/Features/Editor/Views/AnyFileView.swift

@@ -0,0 +1,36 @@
+//
+//  AnyFileView.swift
+//  CodeEdit
+//
+//  Created by Paul Ebose on 2024/5/9.
+//
+
+import SwiftUI
+import QuickLookUI
+
+/// A view for previewing any kind of file.
+///
+/// ```swift
+/// AnyFileView(fileURL)
+/// ```
+/// If the file cannot be previewed, a file icon thumbnail is shown instead.
+struct AnyFileView: NSViewRepresentable {
+
+    /// URL of the file to preview. You can pass in any file type.
+    private let fileURL: URL
+
+    init(_ fileURL: URL) {
+        self.fileURL = fileURL
+    }
+
+    func makeNSView(context: Context) -> QLPreviewView {
+        let qlPreviewView = QLPreviewView()
+        qlPreviewView.previewItem = fileURL as any QLPreviewItem
+        return qlPreviewView
+    }
+
+    func updateNSView(_ qlPreviewView: QLPreviewView, context: Context) {
+        qlPreviewView.previewItem = fileURL as any QLPreviewItem
+    }
+
+}