Implement CredentialItemView and tests for the Mac account chooser.

chrome/browser/ui/cocoa/passwords/credential_item_view.h

+// Copyright 2015 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.
+
+#ifndef CHROME_BROWSER_UI_COCOA_PASSWORDS_CREDENTIAL_ITEM_VIEW_H_
+#define CHROME_BROWSER_UI_COCOA_PASSWORDS_CREDENTIAL_ITEM_VIEW_H_
+
+#import <Cocoa/Cocoa.h>
+
+#import "base/mac/scoped_nsobject.h"
+#include "components/autofill/core/common/password_form.h"
+#include "components/password_manager/content/common/credential_manager_types.h"
+
+@class CredentialItemView;
+class GURL;
+
+// Handles user interaction with and image fetching for a CredentialItemView.
+@protocol CredentialItemDelegate<NSObject>
+
+// Retrieves the image located at |avatarURL| and updates |view| by calling
+// [CredentialItemView updateAvatar:] if successful.
+- (void)fetchAvatar:(const GURL&)avatarURL forView:(CredentialItemView*)view;
+
+@end
+
+// A view to show a single account credential.
+@interface CredentialItemView : NSView {
+  autofill::PasswordForm passwordForm_;
+  password_manager::CredentialType credentialType_;
+  NSTextField* nameLabel_;
+  NSTextField* usernameLabel_;
+  NSImageView* avatarView_;
+  id<CredentialItemDelegate> delegate_;  // Weak.
+}
+
+@property(nonatomic, readonly) autofill::PasswordForm passwordForm;
+@property(nonatomic, readonly) password_manager::CredentialType credentialType;
+
+// Initializes an item view populated with the data in |passwordForm|. Uses
+// |delegate| to asynchronously fetch the avatar image.
+- (id)initWithPasswordForm:(const autofill::PasswordForm&)passwordForm
+            credentialType:(password_manager::CredentialType)credentialType
+                  delegate:(id<CredentialItemDelegate>)delegate;
+
+// Sets a custom avatar for this item. The image should be scaled and cropped
+// to a circle of size |kAvatarImageSize|, otherwise it will look ridiculous.
+- (void)updateAvatar:(NSImage*)avatar;
+
+// The default avatar image, used when a custom one is not set.
++ (NSImage*)defaultAvatar;
+
+@end
+
+#endif  // CHROME_BROWSER_UI_COCOA_PASSWORDS_CREDENTIAL_ITEM_VIEW_H_