Bring the feedback button to the Mac sad tab

chrome/browser/ui/cocoa/tab_contents/sad_tab_view_cocoa.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/cocoa/tab_contents/sad_tab_view_cocoa.h"
 
 #import "base/mac/foundation_util.h"
 #include "components/grit/components_scaled_resources.h"
 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMUILocalizerAndLayoutTweaker.h"
 #import "ui/base/cocoa/controls/blue_label_button.h"
+#import "ui/base/cocoa/controls/hyperlink_text_view.h"
 #import "ui/base/cocoa/nscolor_additions.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace {
 
 // Maximum width used by page contents.
 const CGFloat kMaxContainerWidth = 600;
 // Padding between icon and title.
 const CGFloat kIconTitleSpacing = 40;
 // Padding between title and message.
 const CGFloat kTitleMessageSpacing = 18;
 // Padding between message and link.
 const CGFloat kMessageLinkSpacing = 50;
 // Padding between message and button.
 const CGFloat kMessageButtonSpacing = 44;
 // Minimum margins on all sides.
 const CGFloat kTabMargin = 13;
 // Maximum margin on top.
 const CGFloat kMaxTopMargin = 130;
 
 NSTextField* MakeLabelTextField(NSRect frame) {
   NSTextField* ret = [[[NSTextField alloc] initWithFrame:frame] autorelease];
-  ret.autoresizingMask = NSViewWidthSizable | NSViewMaxYMargin;
+  ret.autoresizingMask = NSViewWidthSizable;
   ret.editable = NO;
   ret.drawsBackground = NO;
   ret.bezeled = NO;
   return ret;
 }
 
 }  // namespace
 
 @interface SadTabContainerView : NSView
 @end
 
 @implementation SadTabContainerView
 - (BOOL)isFlipped {
   return YES;
 }
 @end
 
 @interface SadTabView ()<NSTextViewDelegate>
 @end
 
 @implementation SadTabView {
   NSView* container_;
-  NSImageView* icon_;
-  NSTextField* title_;
   NSTextField* message_;
   HyperlinkTextView* help_;
   NSButton* button_;
+  chrome::SadTab* sadTab_;
 }
 
-@synthesize delegate = delegate_;
+- (instancetype)initWithFrame:(NSRect)frame sadTab:(chrome::SadTab*)sadTab {
+  if ((self = [super initWithFrame:frame])) {
+    sadTab_ = sadTab;
 
-- (instancetype)initWithFrame:(NSRect)frame {
-  if ((self = [super initWithFrame:frame])) {
     self.wantsLayer = YES;
     self.layer.backgroundColor =
         [NSColor colorWithCalibratedWhite:245.0f / 255.0f alpha:1.0].cr_CGColor;
     container_ = [[SadTabContainerView new] autorelease];
 
     NSImage* iconImage = ResourceBundle::GetSharedInstance()
                              .GetNativeImageNamed(IDR_CRASH_SAD_TAB)
                              .ToNSImage();
-    icon_ = [[NSImageView new] autorelease];
-    icon_.image = iconImage;
-    icon_.frameSize = iconImage.size;
-    icon_.autoresizingMask = NSViewMaxXMargin | NSViewMaxYMargin;
-    [container_ addSubview:icon_];
+    NSImageView* icon = [[NSImageView new] autorelease];
+    icon.image = iconImage;
+    icon.frameSize = iconImage.size;
+    [container_ addSubview:icon];
 
-    CGFloat width = self.bounds.size.width;
-    title_ = MakeLabelTextField(
-        NSMakeRect(0, NSMaxY(icon_.frame) + kIconTitleSpacing, width, 0));
-    title_.font = [NSFont systemFontOfSize:24];
-    title_.textColor =
+    NSTextField* title = MakeLabelTextField(
+        NSMakeRect(0, NSMaxY(icon.frame) + kIconTitleSpacing, 0, 0));
+    title.font = [NSFont systemFontOfSize:24];
+    title.textColor =
         [NSColor colorWithCalibratedWhite:38.0f / 255.0f alpha:1.0];
-    [title_ sizeToFit];
-    [container_ addSubview:title_];
 
-    message_ =
-        MakeLabelTextField(NSMakeRect(0, NSMaxY(title_.frame), width, 0));
+    NSMutableParagraphStyle* titleStyle =

[Nico, 2016/09/08 17:12:59]

nit: I think we slightly prefer local scoped_nsobjects over autoreleasing

[Sidney San Martín, 2016/09/09 01:36:00]

Yeah, you caught me. I avoided scoped_nsobject because it handles properties
poorly:

    ../../chrome/browser/ui/cocoa/tab_contents/sad_tab_view_cocoa.mm:35:7:
error: no member named 'autoresizingMask' in
'base::scoped_nsobject<NSTextField>'
      ret.autoresizingMask = NSViewWidthSizable;
      ~~~ ^
    ../../chrome/browser/ui/cocoa/tab_contents/sad_tab_view_cocoa.mm:36:7:
error: no member named 'editable' in 'base::scoped_nsobject<NSTextField>'
      ret.editable = NO;
      ~~~ ^
    ../../chrome/browser/ui/cocoa/tab_contents/sad_tab_view_cocoa.mm:37:7:
error: no member named 'drawsBackground' in 'base::scoped_nsobject<NSTextField>'
      ret.drawsBackground = NO;
      ~~~ ^
    ../../chrome/browser/ui/cocoa/tab_contents/sad_tab_view_cocoa.mm:38:7:
error: no member named 'bezeled' in 'base::scoped_nsobject<NSTextField>'
      ret.bezeled = NO;

The workarounds I can think of are:

1. ret.get().editable = NO;
2. [ret setEditable:NO];
3. Having a scoped_nsobject just to manage ownership *and* a raw pointer.

Nico/James: What seems best? (#2 seems least nasty to me, but I'd be sad to just
give up on properties.)

[Nico, 2016/09/09 01:48:42]

Oh hm, that's a good point. Maybe just add `// Not a scoped_nsobject for easy
propetry access` – or bring it up on the chrome-mac list and see if anyone has a
great suggestion. But I'd be fine with keeping what you have.

[Sidney San Martín, 2016/09/09 15:39:44]

OK. I threw in a comment for now and ask around/ask the list.

+        [[NSMutableParagraphStyle new] autorelease];
+    titleStyle.lineSpacing = 6;
+    title.attributedStringValue = [[[NSAttributedString alloc]
+        initWithString:l10n_util::GetNSString(sadTab->GetTitle())
+            attributes:@{NSParagraphStyleAttributeName : titleStyle}]
+        autorelease];
+
+    [title sizeToFit];
+    [container_ addSubview:title];
+
+    NSFont* messageFont = [NSFont systemFontOfSize:14];
+    NSColor* messageColor =
+        [NSColor colorWithCalibratedWhite:81.0f / 255.0f alpha:1.0];
+
+    message_ = MakeLabelTextField(NSMakeRect(0, NSMaxY(title.frame), 0, 0));
+    message_.frameOrigin =
+        NSMakePoint(0, NSMaxY(title.frame) + kTitleMessageSpacing);
     base::mac::ObjCCast<NSCell>(message_.cell).wraps = YES;
-    message_.font = [NSFont systemFontOfSize:14];
-    message_.textColor =
-        [NSColor colorWithCalibratedWhite:81.0f / 255.0f alpha:1.0];
+    message_.font = messageFont;
+    message_.textColor = messageColor;
+    message_.stringValue = l10n_util::GetNSString(sadTab->GetMessage());
     [container_ addSubview:message_];
 
+    NSString* helpLinkTitle =
+        l10n_util::GetNSString(sadTab->GetHelpLinkTitle());
     help_ = [[[HyperlinkTextView alloc]
         initWithFrame:NSMakeRect(0, 0, 1, message_.font.pointSize + 4)]
         autorelease];
     help_.delegate = self;
-    help_.autoresizingMask = NSViewWidthSizable | NSViewMaxYMargin;
+    help_.autoresizingMask = NSViewWidthSizable;
     help_.textContainer.lineFragmentPadding = 2;  // To align with message_.
+    [help_ setMessage:helpLinkTitle
+             withFont:messageFont
+         messageColor:messageColor];
+    [help_ addLinkRange:NSMakeRange(0, helpLinkTitle.length)
+                withURL:@(sadTab->GetHelpLinkURL())
+              linkColor:messageColor];
+    [help_ sizeToFit];
     [container_ addSubview:help_];
 
     button_ = [[BlueLabelButton new] autorelease];
     button_.target = self;
     button_.action = @selector(buttonClicked);
+    button_.title = l10n_util::GetNSString(sadTab->GetButtonTitle());
+    [button_ sizeToFit];
     [container_ addSubview:button_];
 
     [self addSubview:container_];
+    [self resizeSubviewsWithOldSize:self.bounds.size];
   }
   return self;
 }
 
+- (BOOL)isOpaque {
+  return YES;
+}
+
 - (BOOL)isFlipped {
   return YES;
 }
 
+- (void)updateLayer {
+  // Currently, updateLayer is only called once. If that changes, a DCHECK in
+  // SadTab::RecordFirstPaint will pipe up and we should add a guard here.
+  sadTab_->RecordFirstPaint();
+}
+
 - (void)resizeSubviewsWithOldSize:(NSSize)oldSize {
   [super resizeSubviewsWithOldSize:oldSize];
 
   NSSize size = self.bounds.size;
   NSSize containerSize = NSMakeSize(
       std::min(size.width - 2 * kTabMargin, kMaxContainerWidth), size.height);
 
   // Set the container's size first because text wrapping depends on its width.
   container_.frameSize = containerSize;
 
   // |message_| can wrap to variable number of lines.
   [GTMUILocalizerAndLayoutTweaker sizeToFitFixedWidthTextField:message_];
 
-  message_.frameOrigin =
-      NSMakePoint(0, NSMaxY(title_.frame) + kTitleMessageSpacing);
   help_.frameOrigin =
       NSMakePoint(0, NSMaxY(message_.frame) + kMessageLinkSpacing);
 
   button_.frameOrigin =
       NSMakePoint(containerSize.width - NSWidth(button_.bounds),
                   NSMaxY(message_.frame) + kMessageButtonSpacing);
 
   containerSize.height = NSMaxY(button_.frame);
   container_.frameSize = containerSize;
 
   // Center. Top margin is must be between kTabMargin and kMaxTopMargin.
   container_.frameOrigin = NSMakePoint(
       floor((size.width - containerSize.width) / 2),
       std::min(kMaxTopMargin,
                std::max(kTabMargin,
                         size.height - containerSize.height - kTabMargin)));
 }
 
-- (void)setTitle:(int)title {
-  NSMutableParagraphStyle* style = [[NSMutableParagraphStyle new] autorelease];
-  style.lineSpacing = 6;
-
-  title_.attributedStringValue = [[[NSAttributedString alloc]
-      initWithString:l10n_util::GetNSString(title)
-          attributes:@{NSParagraphStyleAttributeName : style}] autorelease];
-}
-
-- (void)setMessage:(int)message {
-  message_.stringValue = l10n_util::GetNSString(message);
-}
-
-- (void)setButtonTitle:(int)buttonTitle {
-  button_.title = l10n_util::GetNSString(buttonTitle);
-  [button_ sizeToFit];
-}
-
-- (void)setHelpLinkTitle:(int)helpLinkTitle URL:(NSString*)url {
-  NSString* title = l10n_util::GetNSString(helpLinkTitle);
-  [help_ setMessage:title
-           withFont:message_.font
-       messageColor:message_.textColor];
-  [help_ addLinkRange:NSMakeRange(0, title.length)
-              withURL:url
-            linkColor:message_.textColor];
-  [help_ sizeToFit];
-}
-
 - (void)buttonClicked {
-  [delegate_ sadTabViewButtonClicked:self];
+  sadTab_->PerformAction(chrome::SadTab::Action::BUTTON);
 }
 
 // Called when someone clicks on the embedded link.
 - (BOOL)textView:(NSTextView*)textView
     clickedOnLink:(id)link
           atIndex:(NSUInteger)charIndex {
-  [delegate_ sadTabView:self helpLinkClickedWithURL:(NSString*)link];
+  sadTab_->PerformAction(chrome::SadTab::Action::HELP_LINK);
   return YES;
 }
 
+- (NSRange)textView:(NSTextView*)textView
+    willChangeSelectionFromCharacterRange:(NSRange)oldSelectedCharRange
+                         toCharacterRange:(NSRange)newSelectedCharRange {
+  return NSMakeRange(0, 0);
+}
+
 @end