Re-implement form validation message UI with native widgets (Views)

chrome/browser/ui/views/validation_message_bubble_view.cc

 // Copyright (c) 2013 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/validation_message_bubble.h"
 
+#include "chrome/browser/ui/views/validation_message_bubble_delegate.h"
+#include "ui/views/widget/widget.h"
+
+namespace {
+
+// A ValidationMessageBubble implementation for Views.
+class ValidationMessageBubbleImpl : public chrome::ValidationMessageBubble {
+ public:
+  ValidationMessageBubbleImpl(const gfx::Rect& anchor_in_screen,
+                              const string16& main_text,
+                              const string16& sub_text);
+
+  virtual ~ValidationMessageBubbleImpl() {
+    delegate_->GetWidget()->Hide();

[sky, 2013/05/01 14:05:05]

How do you know delegate_ is valid here?

[tkent, 2013/05/01 21:42:30]

I thought it's always valid.  It might be a wrong assumption.
I changed the code so that we clear delegate_ whenever the widget is closing.

+  }
+
+ private:
+  ValidationMessageBubbleDelegate* delegate_;
+
+  DISALLOW_COPY_AND_ASSIGN(ValidationMessageBubbleImpl);
+};
+
+ValidationMessageBubbleImpl::ValidationMessageBubbleImpl(
+    const gfx::Rect& anchor_in_screen,
+    const string16& main_text,
+    const string16& sub_text) {
+  // The delegate_ will kill itself in ValidationMessageBubbleDelegate::

[sky, 2013/05/01 14:05:05]

nit: wrap ValidationMessageBubbleDelegate::DeleteDelegate() to a newline just
like you would in code.

[tkent, 2013/05/01 21:42:30]

Done.

+  // DeleteDelegate.
+  delegate_ = new ValidationMessageBubbleDelegate(
+      anchor_in_screen, main_text, sub_text);
+  views::BubbleDelegateView::CreateBubble(delegate_);
+  delegate_->GetWidget()->Show();
+}
+
+}  // namespace
+
 namespace chrome {
 
 scoped_ptr<ValidationMessageBubble> ValidationMessageBubble::CreateAndShow(
-    content::RenderWidgetHost* widget_host,
+    content::RenderWidgetHost*,
     const gfx::Rect& anchor_in_screen,
     const string16& main_text,
     const string16& sub_text) {
-  // TODO(tkent): Implement this and enable it. crbug.com/235719.
-  return scoped_ptr<ValidationMessageBubble>().Pass();
+  scoped_ptr<ValidationMessageBubble> bubble(
+      new ValidationMessageBubbleImpl(anchor_in_screen, main_text, sub_text));
+  return bubble.Pass();
 }
 
-}
+}  // namespace chrome