Revert of Migrate accessibility from RenderView to RenderFrame.

content/browser/accessibility/accessibility_ui.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 "content/browser/accessibility/accessibility_ui.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/json/json_writer.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "content/browser/accessibility/accessibility_tree_formatter.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
-#include "content/browser/web_contents/web_contents_impl.h"
 #include "content/common/view_message_enums.h"
 #include "content/public/browser/favicon_status.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/browser/render_widget_host_iterator.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "content/public/common/url_constants.h"
@@ skipping 28 matching lines @@
   target_data->SetString(kUrlField, url.spec());
   target_data->SetString(kNameField, net::EscapeForHTML(name));
   target_data->SetInteger(kPidField, base::GetProcId(handle));
   target_data->SetString(kFaviconUrlField, favicon_url.spec());
   target_data->SetInteger(kAccessibilityModeField,
                           accessibility_mode);
   return target_data;
 }
 
 base::DictionaryValue* BuildTargetDescriptor(RenderViewHost* rvh) {
-  WebContentsImpl* web_contents = static_cast<WebContentsImpl*>(
-      WebContents::FromRenderViewHost(rvh));
-  AccessibilityMode accessibility_mode = web_contents->GetAccessibilityMode();
+  WebContents* web_contents = WebContents::FromRenderViewHost(rvh);
+  std::string title;
+  RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(rvh);
+  AccessibilityMode accessibility_mode = rwhi->accessibility_mode();
 
-  std::string title;
   GURL url;
   GURL favicon_url;
   if (web_contents) {
     // TODO(nasko): Fix the following code to use a consistent set of data
     // across the URL, title, and favicon.
     url = web_contents->GetURL();
     title = base::UTF16ToUTF8(web_contents->GetTitle());
     NavigationController& controller = web_contents->GetController();
     NavigationEntry* entry = controller.GetVisibleEntry();
     if (entry != NULL && entry->GetURL().is_valid())
@@ skipping 90 matching lines @@
   int route_id;
   CHECK_EQ(2U, args->GetSize());
   CHECK(args->GetString(0, &process_id_str));
   CHECK(args->GetString(1, &route_id_str));
   CHECK(base::StringToInt(process_id_str, &process_id));
   CHECK(base::StringToInt(route_id_str, &route_id));
 
   RenderViewHost* rvh = RenderViewHost::FromID(process_id, route_id);
   if (!rvh)
     return;
-  WebContentsImpl* web_contents = static_cast<WebContentsImpl*>(
-      WebContents::FromRenderViewHost(rvh));
-  AccessibilityMode mode = web_contents->GetAccessibilityMode();
-  if ((mode & AccessibilityModeComplete) != AccessibilityModeComplete) {
-    web_contents->AddAccessibilityMode(AccessibilityModeComplete);
-  } else {
-    web_contents->SetAccessibilityMode(
-        BrowserAccessibilityStateImpl::GetInstance()->accessibility_mode());
-  }
+  RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(rvh);
+  if (!rwhi)
+    return;
+  AccessibilityMode mode = rwhi->accessibility_mode();
+  if ((mode & AccessibilityModeComplete) != AccessibilityModeComplete)
+    rwhi->AddAccessibilityMode(AccessibilityModeComplete);
+  else
+    rwhi->ResetAccessibilityMode();
 }
 
 void AccessibilityUI::ToggleGlobalAccessibility(const base::ListValue* args) {
   BrowserAccessibilityStateImpl* state =
       BrowserAccessibilityStateImpl::GetInstance();
   AccessibilityMode mode = state->accessibility_mode();
   if ((mode & AccessibilityModeComplete) != AccessibilityModeComplete)
     state->EnableAccessibility();
   else
     state->DisableAccessibility();
@@ skipping 14 matching lines @@
   if (!rvh) {
     scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
     result->SetInteger(kProcessIdField, process_id);
     result->SetInteger(kRouteIdField, route_id);
     result->Set("error", new base::StringValue("Renderer no longer exists."));
     web_ui()->CallJavascriptFunction("accessibility.showTree", *(result.get()));
     return;
   }
 
   scoped_ptr<base::DictionaryValue> result(BuildTargetDescriptor(rvh));
-  WebContents* web_contents = WebContents::FromRenderViewHost(rvh);
+  RenderWidgetHostViewBase* host_view = static_cast<RenderWidgetHostViewBase*>(
+      WebContents::FromRenderViewHost(rvh)->GetRenderWidgetHostView());
+  if (!host_view) {
+    result->Set("error",
+                new base::StringValue("Could not get accessibility tree."));
+    web_ui()->CallJavascriptFunction("accessibility.showTree", *(result.get()));
+    return;
+  }
   scoped_ptr<AccessibilityTreeFormatter> formatter(
-      AccessibilityTreeFormatter::Create(web_contents));
+      AccessibilityTreeFormatter::Create(rvh));
   base::string16 accessibility_contents_utf16;
+  BrowserAccessibilityManager* manager =
+      host_view->GetBrowserAccessibilityManager();
+  if (!manager) {
+    result->Set("error",
+                new base::StringValue("Could not get accessibility tree."));
+    web_ui()->CallJavascriptFunction("accessibility.showTree", *(result.get()));
+    return;
+  }
   std::vector<AccessibilityTreeFormatter::Filter> filters;
   filters.push_back(AccessibilityTreeFormatter::Filter(
       base::ASCIIToUTF16("*"),
       AccessibilityTreeFormatter::Filter::ALLOW));
   formatter->SetFilters(filters);
   formatter->FormatAccessibilityTree(&accessibility_contents_utf16);
 
   result->Set("tree",
               new base::StringValue(
                   base::UTF16ToUTF8(accessibility_contents_utf16)));
   web_ui()->CallJavascriptFunction("accessibility.showTree", *(result.get()));
 }
 
 }  // namespace content