From 87590130c813d3f885b9e4e38a478b9b9ca0ecaf Mon Sep 17 00:00:00 2001
From: Robert Sesek <rsesek@bluestatic.org>
Date: Sat, 14 Dec 2019 15:24:44 -0500
Subject: [PATCH] Show the FileAccessController when reading a source file
 fails.

Also only show the startup prompt once.
---
 Source/BSSourceView.h         |  3 +++
 Source/BSSourceView.mm        |  3 +++
 Source/DebuggerController.m   |  8 ++++++++
 Source/FileAccessController.h |  1 +
 Source/FileAccessController.m | 19 ++++++++++++++-----
 Source/PreferenceNames.h      |  3 +++
 Source/PreferenceNames.m      |  2 ++
 7 files changed, 34 insertions(+), 5 deletions(-)

diff --git a/Source/BSSourceView.h b/Source/BSSourceView.h
index a9359da..2bfb18d 100644
--- a/Source/BSSourceView.h
+++ b/Source/BSSourceView.h
@@ -64,4 +64,7 @@
 // Notifies the delegate that the gutter was clicked at a certain line.
 - (void)gutterClickedAtLine:(NSUInteger)line forFile:(NSString*)file;
 
+// An error occurrerd while attempting to read or highlight the file.
+- (void)error:(NSError*)error whileHighlightingFile:(NSString*)file;
+
 @end
diff --git a/Source/BSSourceView.mm b/Source/BSSourceView.mm
index e7bf17b..5914803 100644
--- a/Source/BSSourceView.mm
+++ b/Source/BSSourceView.mm
@@ -259,6 +259,9 @@
                                                     error:&error];
   if (error) {
     NSLog(@"Error reading file at %@: %@", filePath, error);
+    if ([delegate_ respondsToSelector:@selector(error:whileHighlightingFile:)]) {
+      [delegate_ error:error whileHighlightingFile:filePath];
+    }
     return;
   }
   [textView_ setString:contents];
diff --git a/Source/DebuggerController.m b/Source/DebuggerController.m
index f7d85b4..0a2cedb 100644
--- a/Source/DebuggerController.m
+++ b/Source/DebuggerController.m
@@ -23,6 +23,7 @@
 #import "DebuggerBackEnd.h"
 #import "DebuggerModel.h"
 #import "EvalController.h"
+#import "FileAccessController.h"
 #import "PreferenceNames.h"
 #import "NSXMLElementAdditions.h"
 #import "StackFrame.h"
@@ -407,4 +408,11 @@
   [_sourceViewer setMarkers:[manager breakpointsForFile:file]];
 }
 
+- (void)error:(NSError*)error whileHighlightingFile:(NSString*)file
+{
+  if (error.code == NSFileReadNoPermissionError) {
+    [FileAccessController showFileAccessDialog];
+  }
+}
+
 @end
diff --git a/Source/FileAccessController.h b/Source/FileAccessController.h
index 67cceab..744795a 100644
--- a/Source/FileAccessController.h
+++ b/Source/FileAccessController.h
@@ -18,6 +18,7 @@
 
 @interface FileAccessController : NSWindowController <NSWindowDelegate>
 + (void)maybeShowFileAccessDialog;
++ (void)showFileAccessDialog;
 
 - (IBAction)openFileAccess:(id)sender;
 @end
diff --git a/Source/FileAccessController.m b/Source/FileAccessController.m
index 871cfdd..9ec95c6 100644
--- a/Source/FileAccessController.m
+++ b/Source/FileAccessController.m
@@ -27,14 +27,23 @@
 
 + (void)maybeShowFileAccessDialog
 {
-  NSDictionary* fileAccesses = [[NSUserDefaults standardUserDefaults] objectForKey:kPrefFileAccessBookmarks];
-  if ([fileAccesses count] == 0) {
-    FileAccessController* controller = [[FileAccessController alloc] init];
-    [controller.window center];
-    [controller showWindow:self];
+  NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
+  NSDictionary* fileAccesses = [defaults objectForKey:kPrefFileAccessBookmarks];
+  // TODO: Re-prompt after some amount of time.
+  if ([fileAccesses count] == 0 &&
+      ![defaults objectForKey:kPrefFileAccessStartupShowDate]) {
+    [defaults setObject:[NSDate date] forKey:kPrefFileAccessStartupShowDate];
+    [self showFileAccessDialog];
   }
 }
 
++ (void)showFileAccessDialog
+{
+  FileAccessController* controller = [[FileAccessController alloc] init];
+  [controller.window center];
+  [controller showWindow:self];
+}
+
 - (instancetype)init
 {
   if ((self = [self initWithWindowNibName:@"FileAccess"])) {
diff --git a/Source/PreferenceNames.h b/Source/PreferenceNames.h
index fa6b777..c236181 100644
--- a/Source/PreferenceNames.h
+++ b/Source/PreferenceNames.h
@@ -28,6 +28,9 @@ extern NSString* const kPrefPathReplacements;
 // NSMutableDictionary of NSString paths to NSData file access bookmarks.
 extern NSString* const kPrefFileAccessBookmarks;
 
+// NSDate of last showing the FileAccessController on startup.
+extern NSString* const kPrefFileAccessStartupShowDate;
+
 // NSNumber bool for whether to stop the debugger on the first line of the
 // program.
 extern NSString* const kPrefBreakOnFirstLine;
diff --git a/Source/PreferenceNames.m b/Source/PreferenceNames.m
index 49da56b..e2958b5 100644
--- a/Source/PreferenceNames.m
+++ b/Source/PreferenceNames.m
@@ -24,6 +24,8 @@ NSString* const kPrefPathReplacements = @"PathReplacements";
 
 NSString* const kPrefFileAccessBookmarks = @"FileAccessBookmarks";
 
+NSString* const kPrefFileAccessStartupShowDate = @"FileAccessStartupShowDate";
+
 NSString* const kPrefBreakOnFirstLine = @"BreakOnFirstLine";
 
 NSString* const kPrefDebuggerAttached = @"DebuggerAttached";
-- 
2.22.5