Re-implement form validation message UI with native widgets. (Common and Mac)

chrome/renderer/validation_message_agent.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/renderer/validation_message_agent.h"
+
+#include "base/i18n/rtl.h"
+#include "chrome/common/validation_message_messages.h"
+#include "content/public/renderer/render_view.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
+
+ValidationMessageAgent::ValidationMessageAgent(content::RenderView* render_view)
+    : content::RenderViewObserver(render_view)
+{
+#if defined(OS_MACOSX)
+  // TODO(tkent): enable this for other platforms.
+  // crbug.com/235717, crbug.com/235719, crbug.com/235721.
+  render_view->GetWebView()->setValidationMessageClient(this);
+#endif
+}
+
+ValidationMessageAgent::~ValidationMessageAgent() {}
+
+void ValidationMessageAgent::showValidationMessage(
+    const WebKit::WebRect& anchor_in_screen,
+    const WebKit::WebString& main_text,
+    const WebKit::WebString& sub_text,
+    WebKit::WebTextDirection hint) {
+  string16 wrapped_main_text = main_text;
+  string16 wrapped_sub_text = sub_text;
+  if (hint == WebKit::WebTextDirectionLeftToRight) {
+    wrapped_main_text
+        = base::i18n::GetDisplayStringInLTRDirectionality(wrapped_main_text);
+    if (!wrapped_sub_text.empty()) {
+      wrapped_sub_text
+          = base::i18n::GetDisplayStringInLTRDirectionality(wrapped_sub_text);
+    }
+  } else if (hint == WebKit::WebTextDirectionRightToLeft
+             && !base::i18n::IsRTL()) {
+    base::i18n::WrapStringWithRTLFormatting(&wrapped_main_text);
+    if (!wrapped_sub_text.empty()) {
+      base::i18n::WrapStringWithRTLFormatting(&wrapped_sub_text);
+    }
+  }
+
+  Send(new ValidationMessageMsg_ShowValidationMessage(
+      routing_id(), anchor_in_screen, wrapped_main_text, wrapped_sub_text));
+}
+
+void ValidationMessageAgent::hideValidationMessage() {
+  Send(new ValidationMessageMsg_HideValidationMessage());
+}
+