Move accessibility_util.* from chrome/browser/chromeos to chrome/browser/chromeos/accessibility

chrome/browser/chromeos/accessibility_util.cc

-// Copyright (c) 2011 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/chromeos/accessibility_util.h"
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/logging.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/extensions/extension_accessibility_api.h"
-#include "chrome/browser/extensions/extension_tts_api_platform.h"
-#include "chrome/browser/extensions/component_loader.h"
-#include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/extensions/file_reader.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/common/extensions/extension_messages.h"
-#include "chrome/common/extensions/extension_resource.h"
-#include "chrome/common/pref_names.h"
-#include "content/browser/accessibility/browser_accessibility_state.h"
-#include "content/browser/renderer_host/render_view_host.h"
-#include "content/browser/tab_contents/tab_contents.h"
-#include "content/browser/webui/web_ui.h"
-#include "grit/browser_resources.h"
-#include "grit/generated_resources.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/base/resource/resource_bundle.h"
-
-namespace chromeos {
-namespace accessibility {
-
-// Helper class that directly loads an extension's content scripts into
-// all of the frames corresponding to a given RenderViewHost.
-class ContentScriptLoader {
- public:
-  // Initialize the ContentScriptLoader with the ID of the extension
-  // and the RenderViewHost where the scripts should be loaded.
-  ContentScriptLoader(const std::string& extension_id,
-                      RenderViewHost* render_view_host)
-      : extension_id_(extension_id),
-        render_view_host_(render_view_host) {}
-
-  // Call this once with the ExtensionResource corresponding to each
-  // content script to be loaded.
-  void AppendScript(ExtensionResource resource) {
-    resources_.push(resource);
-  }
-
-  // Fianlly, call this method once to fetch all of the resources and
-  // load them. This method will delete this object when done.
-  void Run() {
-    if (resources_.empty()) {
-      delete this;
-      return;
-    }
-
-    ExtensionResource resource = resources_.front();
-    resources_.pop();
-    scoped_refptr<FileReader> reader(new FileReader(resource, base::Bind(
-        &ContentScriptLoader::OnFileLoaded, base::Unretained(this))));
-    reader->Start();
-  }
-
- private:
-  void OnFileLoaded(bool success, const std::string& data) {
-    if (success) {
-      ExtensionMsg_ExecuteCode_Params params;
-      params.request_id = 0;
-      params.extension_id = extension_id_;
-      params.is_javascript = true;
-      params.code = data;
-      params.all_frames = true;
-      params.in_main_world = false;
-      render_view_host_->Send(new ExtensionMsg_ExecuteCode(
-          render_view_host_->routing_id(), params));
-    }
-    Run();
-  }
-
-  std::string extension_id_;
-  RenderViewHost* render_view_host_;
-  std::queue<ExtensionResource> resources_;
-};
-
-void EnableAccessibility(bool enabled, WebUI* login_web_ui) {
-  bool accessibility_enabled = g_browser_process &&
-      g_browser_process->local_state()->GetBoolean(
-          prefs::kAccessibilityEnabled);
-  if (accessibility_enabled == enabled) {
-    LOG(INFO) << "Accessibility is already " <<
-        (enabled ? "enabled" : "disabled") << ".  Going to do nothing.";
-    return;
-  }
-
-  g_browser_process->local_state()->SetBoolean(
-      prefs::kAccessibilityEnabled, enabled);
-  g_browser_process->local_state()->ScheduleSavePersistentPrefs();
-  ExtensionAccessibilityEventRouter::GetInstance()->
-      SetAccessibilityEnabled(enabled);
-  BrowserAccessibilityState::GetInstance()->OnAccessibilityEnabledManually();
-
-  Speak(enabled ?
-        l10n_util::GetStringUTF8(IDS_CHROMEOS_ACC_ACCESS_ENABLED).c_str() :
-        l10n_util::GetStringUTF8(IDS_CHROMEOS_ACC_ACCESS_DISABLED).c_str());
-
-  // Load/Unload ChromeVox
-  Profile* profile = ProfileManager::GetDefaultProfile();
-  ExtensionService* extension_service =
-      profile->GetExtensionService();
-  FilePath path = FilePath(extension_misc::kAccessExtensionPath)
-      .AppendASCII(extension_misc::kChromeVoxDirectoryName);
-  if (enabled) { // Load ChromeVox
-    const Extension* extension =
-        extension_service->component_loader()->Add(IDR_CHROMEVOX_MANIFEST,
-                                                   path);
-
-    if (login_web_ui) {
-      RenderViewHost* render_view_host =
-          login_web_ui->tab_contents()->render_view_host();
-      ContentScriptLoader* loader = new ContentScriptLoader(
-          extension->id(), render_view_host);
-
-      for (size_t i = 0; i < extension->content_scripts().size(); i++) {
-        const UserScript& script = extension->content_scripts()[i];
-        for (size_t j = 0; j < script.js_scripts().size(); ++j) {
-          const UserScript::File &file = script.js_scripts()[j];
-          ExtensionResource resource = extension->GetResource(
-              file.relative_path());
-          loader->AppendScript(resource);
-        }
-      }
-      loader->Run();  // It cleans itself up when done.
-    }
-
-    LOG(INFO) << "ChromeVox was Loaded.";
-  } else { // Unload ChromeVox
-    extension_service->component_loader()->Remove(path);
-    LOG(INFO) << "ChromeVox was Unloaded.";
-  }
-}
-
-void ToggleAccessibility(WebUI* login_web_ui) {
-  bool accessibility_enabled = g_browser_process &&
-      g_browser_process->local_state()->GetBoolean(
-          prefs::kAccessibilityEnabled);
-  accessibility_enabled = !accessibility_enabled;
-  EnableAccessibility(accessibility_enabled, login_web_ui);
-};
-
-void Speak(const char* utterance) {
-  UtteranceContinuousParameters params;
-  ExtensionTtsPlatformImpl::GetInstance()->Speak(
-      -1,  // No utterance ID because we don't need a callback when it finishes.
-      utterance,
-      g_browser_process->GetApplicationLocale(),
-      params);
-}
-
-bool IsAccessibilityEnabled() {
-  if (!g_browser_process) {
-    return false;
-  }
-  PrefService* prefs = g_browser_process->local_state();
-  bool accessibility_enabled = prefs &&
-      prefs->GetBoolean(prefs::kAccessibilityEnabled);
-  return accessibility_enabled;
-}
-
-}  // namespace accessibility
-}  // namespace chromeos