From 2b25d875bcc5cd0313530391ff083352aa9bb9f2 Mon Sep 17 00:00:00 2001
From: Matthew Chen <matthew@signal.org>
Date: Thu, 20 Dec 2018 09:29:15 -0500
Subject: [PATCH 1/3] Don't select a tool by default in image editor view.

---
 SignalMessaging/Views/ImageEditor/ImageEditorView.swift | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/SignalMessaging/Views/ImageEditor/ImageEditorView.swift b/SignalMessaging/Views/ImageEditor/ImageEditorView.swift
index 2dfcd4268..67b7ea554 100644
--- a/SignalMessaging/Views/ImageEditor/ImageEditorView.swift
+++ b/SignalMessaging/Views/ImageEditor/ImageEditorView.swift
@@ -11,21 +11,26 @@ public class ImageEditorView: UIView, ImageEditorModelDelegate {
     private let model: ImageEditorModel
 
     enum EditorMode: String {
+        case none
         case brush
         case crop
     }
 
-    private var editorMode = EditorMode.brush {
+    private var editorMode = EditorMode.none {
         didSet {
             AssertIsOnMainThread()
 
             switch editorMode {
+            case .none:
+                editorGestureRecognizer?.isEnabled = false
             case .brush:
                 // Brush strokes can start and end (and return from) outside the view.
                 editorGestureRecognizer?.shouldAllowOutsideView = true
+                editorGestureRecognizer?.isEnabled = true
             case .crop:
                 // Crop gestures can start and end (and return from) outside the view.
                 editorGestureRecognizer?.shouldAllowOutsideView = true
+                editorGestureRecognizer?.isEnabled = true
             }
         }
     }
@@ -209,6 +214,8 @@ public class ImageEditorView: UIView, ImageEditorModelDelegate {
         AssertIsOnMainThread()
 
         switch editorMode {
+        case .none:
+            break
         case .brush:
             handleBrushGesture(gestureRecognizer)
         case .crop:

From b24e8e4f816df868ef2a1049a77510852674838f Mon Sep 17 00:00:00 2001
From: Matthew Chen <matthew@signal.org>
Date: Thu, 20 Dec 2018 09:32:48 -0500
Subject: [PATCH 2/3] Use autoreleasepool when rendering image editor output.

---
 .../ViewControllers/AttachmentApprovalViewController.swift  | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/SignalMessaging/ViewControllers/AttachmentApprovalViewController.swift b/SignalMessaging/ViewControllers/AttachmentApprovalViewController.swift
index e84076b8b..4ce2073ec 100644
--- a/SignalMessaging/ViewControllers/AttachmentApprovalViewController.swift
+++ b/SignalMessaging/ViewControllers/AttachmentApprovalViewController.swift
@@ -582,7 +582,11 @@ public class AttachmentApprovalViewController: UIPageViewController, UIPageViewC
     }
 
     var attachments: [SignalAttachment] {
-        return attachmentItems.map { self.processedAttachment(forAttachmentItem: $0) }
+        return attachmentItems.map { (attachmentItem) in
+            autoreleasepool {
+                return self.processedAttachment(forAttachmentItem: attachmentItem)
+            }
+        }
     }
 
     // For any attachments edited with the image editor, returns a

From a440f692ce3afcdf05fd253fd3dcdf6cd19ffb98 Mon Sep 17 00:00:00 2001
From: Matthew Chen <matthew@signal.org>
Date: Thu, 20 Dec 2018 09:42:28 -0500
Subject: [PATCH 3/3] Clean up image editor temp files.

---
 .../Views/ImageEditor/ImageEditorModel.swift  | 32 ++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/SignalMessaging/Views/ImageEditor/ImageEditorModel.swift b/SignalMessaging/Views/ImageEditor/ImageEditorModel.swift
index 5d1b73d2f..94c20d3dc 100644
--- a/SignalMessaging/Views/ImageEditor/ImageEditorModel.swift
+++ b/SignalMessaging/Views/ImageEditor/ImageEditorModel.swift
@@ -496,6 +496,36 @@ public class ImageEditorModel: NSObject {
         }, changedItemIds: [item.itemId])
     }
 
+    // MARK: - Temp Files
+
+    private var temporaryFilePaths = [String]()
+
+    @objc
+    public func temporaryFilePath(withFileExtension fileExtension: String) -> String {
+        AssertIsOnMainThread()
+
+        let filePath = OWSFileSystem.temporaryFilePath(withFileExtension: fileExtension)
+        temporaryFilePaths.append(filePath)
+        return filePath
+    }
+
+    deinit {
+        AssertIsOnMainThread()
+
+        let temporaryFilePaths = self.temporaryFilePaths
+
+        DispatchQueue.global(qos: .background).async {
+            for filePath in temporaryFilePaths {
+                guard OWSFileSystem.deleteFile(filePath) else {
+                    Logger.error("Could not delete temp file: \(filePath)")
+                    continue
+                }
+            }
+        }
+    }
+
+    // MARK: - Crop
+
     @objc
     public func crop(unitCropRect: CGRect) {
         guard let croppedImage = ImageEditorModel.crop(imagePath: contents.imagePath,
@@ -510,7 +540,7 @@ public class ImageEditorModel: NSObject {
             owsFailDebug("Could not convert cropped image to PNG.")
             return
         }
-        let croppedImagePath = OWSFileSystem.temporaryFilePath(withFileExtension: "png")
+        let croppedImagePath = temporaryFilePath(withFileExtension: "png")
         do {
             try croppedImageData.write(to: NSURL.fileURL(withPath: croppedImagePath), options: .atomicWrite)
         } catch let error as NSError {